WO2003044557A1 - Device for locating the origin of a radiating source, in particular by measuring the distance separating it from said radiating source, the distance being obtained by measuring the power of the received signal - Google Patents
Device for locating the origin of a radiating source, in particular by measuring the distance separating it from said radiating source, the distance being obtained by measuring the power of the received signal Download PDFInfo
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- WO2003044557A1 WO2003044557A1 PCT/FR2002/003995 FR0203995W WO03044557A1 WO 2003044557 A1 WO2003044557 A1 WO 2003044557A1 FR 0203995 W FR0203995 W FR 0203995W WO 03044557 A1 WO03044557 A1 WO 03044557A1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S11/00—Systems for determining distance or velocity not using reflection or reradiation
- G01S11/14—Systems for determining distance or velocity not using reflection or reradiation using ultrasonic, sonic, or infrasonic waves
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S11/00—Systems for determining distance or velocity not using reflection or reradiation
- G01S11/02—Systems for determining distance or velocity not using reflection or reradiation using radio waves
- G01S11/06—Systems for determining distance or velocity not using reflection or reradiation using radio waves using intensity measurements
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S11/00—Systems for determining distance or velocity not using reflection or reradiation
- G01S11/12—Systems for determining distance or velocity not using reflection or reradiation using electromagnetic waves other than radio waves
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
- G01S5/02—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
- G01S5/14—Determining absolute distances from a plurality of spaced points of known location
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
- G01S5/16—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using electromagnetic waves other than radio waves
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
- G01S5/18—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using ultrasonic, sonic, or infrasonic waves
- G01S5/30—Determining absolute distances from a plurality of spaced points of known location
Definitions
- the present invention relates to a device for locating the origin of a radiating source, in particular by measuring the distance separating it from said radiating source.
- devices are known for measuring the distance between a radiating source and the measuring device by measuring the propagation time of the wave. Knowing the speed of propagation of the wave it is possible to determine the distance. This distance measurement technique
- the object of the present invention is to remedy this deficiency by proposing a device making it possible to measure the distance separating it from a transmitting source, without knowing the power of said transmitting source nor the sensitivity of the receiver, while being of low cost. of implementation.
- the device according to the invention is essentially characterized in that it comprises on the one hand at least two receiving means separated by a known distance, and on the other hand at least one calculation unit capable of measuring the power of the received signal by each receiver, and in processing the signals received via a mathematical function making it possible to give the distance separating the transmitting source from at least one of said receiving means.
- the emitting source emits a wave, for example of the sound, light or radio type.
- This source is an active emitting source, or it emits a wave according to the laws of reflection and diffraction.
- the calculation unit is associated with means for executing an algorithm capable of modeling the mathematical function which makes it possible to give the distance separating the emitting source from at least the one of the receiving means.
- This characteristic is particularly advantageous when it is not possible to know, beforehand, the mathematical function, for example when it is dependent on a complex environment.
- the algorithm is based on a learning method associated with a modeling method arranged according to a process in four stages which are:
- FIG. 1 represents a schematic view of a device for locating the origin of a radiating source according to the invention.
- FIG. 2 represents a schematic view of another embodiment of the device according to the invention.
- the power received at a distance "x" from the transmitting source is of the form: P r - SP f (x) or P r is the received power, P ⁇ is the transmitting power, S is the sensitivity of the receiver and the known power decrease function as a function of the distance between the transmitting source and the receiver. This function is independent of the transmit power and the sensitivity of the receiver. Generally this
- the distance between the emitting source E and the first receiver Ri is called “D".
- the distance between the transmitting source and the second receiver R 2 is therefore "D + a", "a” being the distance separating the two receiving means R x and R 2 .
- the power received by the nearest receiver R x is:
- This algorithm A is based on a learning method associated with a modeling method which is organized according to a four-step process, namely:
- modeling the modeling algorithm A searches for the approximate function f passing through the set of points of the reference matrix, by solving the system of equations:
- this data is added to the matrix of indexed reference points (Di, Pli, P2i).
- the function f is then automatically modified.
- FIG. 2 one can see a device according to the invention using a third receiving means R 3 , which makes it possible to obtain the distance projected onto a second axis and allow the location of the emitting source E on a two-dimensional plane.
- the method is extensible in three dimensions using four receiving means defining three non-coplanar axes.
- the device according to the invention finds numerous applications.
- the transmitting source is a transmitter of hertzian waves
- this makes it possible to locate the origin of the transmitting source, whatever its power of emission and to operate a action if this source is in a predefined cell space.
Abstract
The invention concerns a device for locating the origin of a radiating source (E), in particular by measuring the distance separating it from the radiating source (E). It comprises at least two receiver means (R1, R2) separated by a known distance (a) and at least a computing unit capable of measuring the power of the signal received by each receiver (R1, R2), of processing the received signals by means of a mathematical function for providing the distance (D) separating the emitting source (E) from at least one of the receiver means (R1, R2).
Description
DISPOSITIF DE LOCALISATION DE L ORIGINE D UNE SOURCE RAYONNANTE, NOTAMMENT PAR MESURE DE LA DISTANCE LE SEPARANT DE LADITE SOURCE RAYONNANTE, LA DISTANCE ETANT OBTENUE PAR LA MESURE DE LA PUISSANCE DU SIGNAL REÇUDEVICE FOR LOCATING THE ORIGIN OF A RADIANT SOURCE, IN PARTICULAR BY MEASURING THE DISTANCE SEPARATING FROM SAID RADIANT SOURCE, THE DISTANCE BEING OBTAINED BY MEASURING THE POWER OF THE RECEIVED SIGNAL
5 La présente invention a pour objet un dispositif de localisation de l'origine d'une source rayonnante, notamment par mesure de la distance le séparant de ladite source rayonnante.5 The present invention relates to a device for locating the origin of a radiating source, in particular by measuring the distance separating it from said radiating source.
On connaît déjà des dispositifs permettant de localiser une 10 source rayonnante par une méthode de triangulation : en positionnant le dispositif en différents points de l'espace et en repérant pour chaque nouvelle position l'orientation entre une ligne de référence fixe et l'origine de la source, il est possible de déterminer la position de la source par intersection 15 des informations relevées. Cette technique de localisation est souvent utilisée dans la localisation de sources émettrices actives (goniomètre par exemple) mais présente un coût de mise en œuvre important .Devices are already known which make it possible to locate a radiating source by a triangulation method: by positioning the device at different points in space and by identifying for each new position the orientation between a fixed reference line and the origin of the source, it is possible to determine the position of the source by intersection 15 of the information recorded. This localization technique is often used in the localization of active emitting sources (goniometer for example) but has a significant implementation cost.
20 On connaît, par ailleurs, des dispositifs permettant de mesurer la distance entre une source rayonnante et le dispositif de mesure par mesure du temps de propagation de l'onde. Connaissant la vitesse de propagation de l'onde il est possible de déterminer la distance. Cette technique de mesure de distanceIn addition, devices are known for measuring the distance between a radiating source and the measuring device by measuring the propagation time of the wave. Knowing the speed of propagation of the wave it is possible to determine the distance. This distance measurement technique
25 est souvent utilisée dans les télémètres ultrason ou laser par réflexion d'une onde sur la surface à localiser. Elle demande toutefois une électronique de traitement très rapide et onéreuse .25 is often used in ultrasonic or laser rangefinders by reflection of a wave on the surface to be located. However, it requires very fast and expensive processing electronics.
30 On connaît d'autre part la loi de progression d'une onde. On sait notamment que la puissance reçue est décroissante en fonction de la distance entre la source émettrice et le dispositif de réception. L'interprétation de cette loi permet d'évaluer la distance entre la source émettrice et le dispositif30 We also know the law of progression of a wave. We know in particular that the received power decreases as a function of the distance between the transmitting source and the receiving device. The interpretation of this law makes it possible to evaluate the distance between the emitting source and the device
35 de réception. On connaît des dispositifs utilisant la réflexion d'une onde infra rouge destinés à mesurer la distance entre le
dispositif de mesure et la surface réfléchissante destinée à être localisée. On connaît aussi des dispositifs destinés à évaluer la distance entre un récepteur et une source émettrice radio et à autoriser une action, le déverrouillage d'ouvrants de porte par exemple, quand l'émetteur se rapproche du récepteur. Néanmoins, la puissance reçue ne dépend pas uniquement de la distance entre la source émettrice et le dispositif de réception mais aussi d'autres paramètres tels que la puissance d'émission, la sensibilité du récepteur, d phénomènes d'ondes stationnaires, de la présence ou non de parois absorbantes ou réfléchissantes à proximité dudit dispositif, etc. Aussi, ces dispositifs existants ne peuvent mesurer la distance entre la source émettrice et le dispositif de réception qu'à la condition de connaître la puissance d'émission et la sensibilité du récepteur.35 reception. There are known devices using the reflection of an infrared wave intended to measure the distance between the measuring device and the reflecting surface intended to be located. There are also known devices intended to evaluate the distance between a receiver and a radio transmitting source and to authorize an action, the unlocking of door openers for example, when the transmitter approaches the receiver. However, the received power does not only depend on the distance between the transmitting source and the receiving device, but also on other parameters such as the transmitting power, the sensitivity of the receiver, standing waves phenomena, the presence or not absorbent or reflective walls near said device, etc. Also, these existing devices can measure the distance between the transmitting source and the receiving device only on condition of knowing the transmitting power and the sensitivity of the receiver.
La présente invention a pour but de remédier à cette carence en proposant un dispositif permettant de mesurer la distance le séparant d'une source émettrice, sans connaître la puissance de ladite source émettrice ni la sensibilité du récepteur, tout en étant d'un faible coût de mise en œuvre.The object of the present invention is to remedy this deficiency by proposing a device making it possible to measure the distance separating it from a transmitting source, without knowing the power of said transmitting source nor the sensitivity of the receiver, while being of low cost. of implementation.
Le dispositif selon l'invention se caractérise essentiellement en ce qu'il comporte d'une part au moins deux moyens récepteurs séparés d'une distance connue, et d'autre part au moins une unité de calcul apte à mesurer la puissance du signal reçu par chaque récepteur, et à traiter les signaux reçus par l'intermédiaire d'une fonction mathématique permettant de donner la distance séparant la source émettrice d'au moins l'un desdits moyens récepteurs .The device according to the invention is essentially characterized in that it comprises on the one hand at least two receiving means separated by a known distance, and on the other hand at least one calculation unit capable of measuring the power of the received signal by each receiver, and in processing the signals received via a mathematical function making it possible to give the distance separating the transmitting source from at least one of said receiving means.
La source émettrice émet une onde par exemple de type sonore, lumineuse ou hertzienne. Cette source est une source émettrice active, ou bien elle émet une onde suivant les lois de réflexion et de diffraction.
Selon une caractéristique additionnelle du dispositif selon l'invention, l'unité de calcul est associée à des moyens d'exécution d'un algorithme apte à modéliser la fonction mathématique qui permet de donner la distance séparant la source émettrice d'au moins l'un des moyens récepteurs.The emitting source emits a wave, for example of the sound, light or radio type. This source is an active emitting source, or it emits a wave according to the laws of reflection and diffraction. According to an additional characteristic of the device according to the invention, the calculation unit is associated with means for executing an algorithm capable of modeling the mathematical function which makes it possible to give the distance separating the emitting source from at least the one of the receiving means.
Cette caractéristique est particulièrement avantageuse lorsqu'il n'est pas possible de connaître, au préalable, la fonction mathématique, par exemple quand elle-ci est dépendante d'un environnement complexe.This characteristic is particularly advantageous when it is not possible to know, beforehand, the mathematical function, for example when it is dependent on a complex environment.
Selon une autre caractéristique additionnelle du dispositif selon l'invention, l'algorithme repose sur une méthode d'apprentissage associée à une méthode de modélisation s'agençant suivant un processus en quatre étapes qui sont :According to another additional characteristic of the device according to the invention, the algorithm is based on a learning method associated with a modeling method arranged according to a process in four stages which are:
- un apprentissage dans lequel on réalise le positionnement de l'émetteur à diverses distances, afin de créer une matrice de points de référence,- an apprenticeship in which the positioning of the transmitter is carried out at various distances, in order to create a matrix of reference points,
une modélisation, par laquelle l'algorithme de modélisation recherche la fonction approchée passant par l'ensemble des points de référence de la matrice, par résolution d'un système d'équations,a modeling, by which the modeling algorithm searches for the approximate function passing through the set of reference points of the matrix, by solving a system of equations,
- une résolution, par laquelle on applique ladite fonction modélisée afin d'évaluer la distance recherchée à partir de la mesure des puissances reçues,a resolution, by which said modeled function is applied in order to evaluate the distance sought from the measurement of the powers received,
- et, dans le cas où la distance recherchée est également mesurée par un système autre, cette donnée vient s'ajouter à la matrice de points de référence, avec pour conséquence la modification automatique de ladite fonction.- And, in the case where the distance sought is also measured by another system, this data is added to the matrix of reference points, with the consequence of the automatic modification of said function.
Les avantages et les caractéristiques du dispositif selon l'invention, ressortiront plus clairement de la description qui
suit et qui se rapporte au dessin annexé, lequel en représente plusieurs modes de réalisation non limitatifs.The advantages and characteristics of the device according to the invention will emerge more clearly from the description which follows and which relates to the attached drawing, which represents several non-limiting embodiments.
Dans le dessin annexé :In the attached drawing:
La figure 1 représente une vue schématique d'un dispositif de localisation de l'origine d'une source rayonnante selon 1' invention.FIG. 1 represents a schematic view of a device for locating the origin of a radiating source according to the invention.
La figure 2 représente une vue schématique d'un autre mode de réalisation du dispositif selon l'invention.FIG. 2 represents a schematic view of another embodiment of the device according to the invention.
En référence à la figure 1, on peut voir un dispositif selon l'invention utilisant deux moyens récepteurs Ri et R2 alignés avec une source émettrice E. Dans cas, le principe de fonctionnement du dispositif selon l'invention est le suivant.Referring to Figure 1, we can see a device according to the invention using two receiver means Ri and R 2 aligned with a transmitting source E. In this case, the operating principle of the device according to the invention is as follows.
On sait que la puissance reçue à une distance « x » de la source émettrice est de la forme : Pr — S.P f(x) ou Pr est la puissance reçue, P± est la puissance d'émission, S est la sensibilité du récepteur et la fonction de décroissance connue de la puissance en fonction de l'êloignement entre la source émettrice et le récepteur. Cette fonction est indépendante de la puissance d'émission et de la sensibilité du récepteur. Généralement cetteWe know that the power received at a distance "x" from the transmitting source is of the form: P r - SP f (x) or P r is the received power, P ± is the transmitting power, S is the sensitivity of the receiver and the known power decrease function as a function of the distance between the transmitting source and the receiver. This function is independent of the transmit power and the sensitivity of the receiver. Generally this
1 fonction est de la forme f(x) = ~ , lorsque l'émetteur et le récepteur sont en champ libre.1 function is of the form f (x) = ~ , when the transmitter and the receiver are in free field.
La distance entre la source émettrice E et le premier récepteur Ri est appelée « D ». La distance entre la source émettrice et le second récepteur R2 est donc « D+a », « a » étant la distance séparant les deux moyens récepteurs Rx et R2.The distance between the emitting source E and the first receiver Ri is called "D". The distance between the transmitting source and the second receiver R 2 is therefore "D + a", "a" being the distance separating the two receiving means R x and R 2 .
La puissance reçue par le récepteur le plus proche Rx est :The power received by the nearest receiver R x is:
Prl=S.Pi.f (D)
La puissance reçue par le récepteur le plus éloigné R2 est :P rl = S.Pi.f (D) The power received by the most distant receiver R 2 is:
Pr2=S.Pi.f (D+a)P r2 = S.Pi.f (D + a)
En calculant (Pr2 - Prι) / Pn il est possible d'obtenir une information indépendante de la puissance d'émission et de la sensibilité du récepteur, puisque ce rapport ne dépend plus que de la fonction f, de la distance à mesurer D et de l'écart a entre les deux récepteurs Ri et R2. Si on connaît la fonction f et a, on peut en déduire la distance recherchée D.By calculating (P r2 - P r ι) / Pn it is possible to obtain information independent of the transmission power and the sensitivity of the receiver, since this ratio only depends on the function f, on the distance to measure D and the difference a between the two receivers Ri and R 2 . If we know the function f and a, we can deduce the desired distance D.
(Pr2 " Prl)/ Prl = (f(D+a)- f (D) ) / f (D)(Pr2 "Prl) / Prl = (f (D + a) - f (D)) / f (D)
Si on note g(D) la fonction g(D) = (f(D+a)- f(D))/ f(D) et g'1 la fonction inverse de g, alors on évalue la distance recherchée D par D = g_1((Pr2 - Prι) / Prι)If we denote g (D) the function g (D) = (f (D + a) - f (D)) / f (D) and g '1 the inverse function of g, then we evaluate the distance sought D by D = g _1 ((P r2 - P r ι) / P r ι)
1 Par exemple, dans le cas ou f (x) est de la forme f(x) - ~ ι et dans l'hypothèse où la distance D est importante devant l'écart « a » entre les deux moyens récepteurs Ri et R, on obtient en première approximation (Pr2 - Prl) / Pn = -2a/D c'est à dire D = - 2a Pn / (Pr2 - Prl)1 For example, in the case where f (x) is of the form f (x) - ~ ι and in the hypothesis that the distance D is significant compared to the difference "a" between the two receiving means Ri and R, we get as a first approximation (P r2 - P rl ) / Pn = -2a / D i.e. D = - 2a Pn / (P r2 - P rl )
Dans le cas où la source émettrice E et les récepteurs Ri et R2 ne sont pas alignés, le principe précédemment décrit permet d'évaluer la distance projetée sur l'axe passant par les deux moyens récepteurs Ri et R2.In the case where the emitting source E and the receivers Ri and R 2 are not aligned, the principle previously described makes it possible to evaluate the distance projected on the axis passing through the two receiving means Ri and R 2 .
La description qui précède repose sur l'hypothèse que la fonction f liant la puissance reçue à la distance entre émetteurs et récepteurs est connue. Dans le cas où cette fonction f n'est pas rigoureusement connue, notamment dans le cas d'un environnement complexe, phénomène d'ondes stationnaires, présence de parois absorbantes ou réfléchissantes à proximité du dispositif de localisation, ce dernier est, selon
l'invention, associé à un algorithme A de modélisation permettant de générer automatiquement cette fonction f.The foregoing description is based on the assumption that the function f linking the power received to the distance between transmitters and receivers is known. In the case where this function f is not rigorously known, in particular in the case of a complex environment, phenomenon of standing waves, presence of absorbing or reflecting walls near the location device, the latter is, according to the invention, associated with a modeling algorithm A making it possible to automatically generate this function f.
Cet algorithme A repose sur une méthode d'apprentissage associé à une méthode de modélisation s'agençant suivant un processus en quatre étapes à savoir :This algorithm A is based on a learning method associated with a modeling method which is organized according to a four-step process, namely:
- étape 1- Step 1
apprentissage : positionnement de l'émetteur à diverses distances, mesure de la distance. Cette étape permet de créer une matrice de points de référence indexés (Di, Pli, P2i) .learning: positioning the transmitter at various distances, measuring the distance. This step creates a matrix of indexed reference points (Di, Pli, P2i).
- étape 2- 2nd step
modélisation : l'algorithme A de modélisation recherche la fonction approchée f passant par l'ensemble des points de la matrice de référence, par résolution du système d'équations :modeling: the modeling algorithm A searches for the approximate function f passing through the set of points of the reference matrix, by solving the system of equations:
(Pr2i " Prli) / Prli = ( f (Di + a) - f (Di ) ) / f (Di ) .(Pr2i "Prli) / Prli = (f (Di + a) - f (Di)) / f (Di).
- étape 3- step 3
résolution : application de la fonction modélisée afin d'évaluer la distance D à partir de la mesure des puissances reçues.resolution: application of the modeled function to evaluate the distance D from the measurement of the powers received.
- étape 4- step 4
dans le cas où la distance D est également mesurée par un système autre, cette donnée vient s'ajouter à la matrice de points de référence indexés (Di, Pli, P2i) . La fonction f est alors automatiquement modifiée.in the case where the distance D is also measured by another system, this data is added to the matrix of indexed reference points (Di, Pli, P2i). The function f is then automatically modified.
En référence maintenant à la figure 2, on peut voir un dispositif selon l'invention utilisant un troisième moyen récepteur R3, ce qui permet d'obtenir la distance projetée sur
un second axe et de permettre la localisation de la source émettrice E sur un plan en deux dimensions.Referring now to FIG. 2, one can see a device according to the invention using a third receiving means R 3 , which makes it possible to obtain the distance projected onto a second axis and allow the location of the emitting source E on a two-dimensional plane.
On notera que la méthode est extensible à trois dimensions en utilisant quatre moyens récepteurs définissant trois axes non coplanaires.It will be noted that the method is extensible in three dimensions using four receiving means defining three non-coplanar axes.
Le dispositif selon l'invention trouve de nombreuses applications .The device according to the invention finds numerous applications.
Ainsi, en disposant deux récepteurs infrarouges, il est possible de déterminer la distance entre une source rayonnante infrarouge, active ou passive, et un dispositif de mesure.Thus, by having two infrared receivers, it is possible to determine the distance between an infrared radiating source, active or passive, and a measuring device.
Dans le cas où la source émettrice est un émetteur d'ondes hertziennes, et en disposant un système muni de trois récepteurs, cela permet de localiser l'origine de la source émettrice, quelle que soit sa puissance d'émission et d'opérer une action si cette source se trouve dans un espace cellulaire prédéfini.
In the case where the transmitting source is a transmitter of hertzian waves, and by having a system provided with three receivers, this makes it possible to locate the origin of the transmitting source, whatever its power of emission and to operate a action if this source is in a predefined cell space.
Claims
REVENDICATIONS
1) Dispositif de localisation de l'origine d'une source rayonnante (E) , notamment par mesure de la distance le séparant de ladite source rayonnante (E) , caractérisé en ce qu'il comporte d'une part au moins deux moyens récepteurs (Ri, R2 ; R3) séparés d'une distance connue (a), et d'autre part au moins une unité de calcul apte à mesurer la puissance du signal reçu par chaque récepteur (Ri, R2 ; R3) , et à traiter les signaux reçus par l'intermédiaire d'une fonction mathématique (f) permettant de donner la distance (D) séparant la source émettrice (Ξ) d'au moins l'un desdits moyens récepteurs (Rlf R2 ; R3) .1) Device for locating the origin of a radiating source (E), in particular by measuring the distance separating it from said radiating source (E), characterized in that it comprises on the one hand at least two receiving means (Ri, R 2 ; R 3 ) separated by a known distance (a), and on the other hand at least one calculation unit capable of measuring the power of the signal received by each receiver (Ri, R 2 ; R 3 ) , and processing the signals received via a mathematical function (f) making it possible to give the distance (D) separating the transmitting source (Ξ) from at least one of said receiving means (R lf R 2 ; R 3 ).
2) Dispositif selon la revendication 1, caractérisé en ce que l'unité de calcul est associée à des moyens d'exécution d'un algorithme (A) apte à odéliser la fonction mathématique (f) qui permet de donner la distance séparant la source émettrice (E) d'au moins l'un des moyens récepteurs (Rlf R2 ; R3) .2) Device according to claim 1, characterized in that the calculation unit is associated with means for executing an algorithm (A) capable of odelling the mathematical function (f) which makes it possible to give the distance separating the source transmitter (E) of at least one of the receiver means (R 1f R 2 ; R 3 ).
3) Dispositif selon la revendication 2, caractérisé en ce que l'algorithme (A) repose sur une méthode d'apprentissage associée à une méthode de modélisation s'agençant suivant un processus en quatre étapes qui sont :3) Device according to claim 2, characterized in that the algorithm (A) is based on a learning method associated with a modeling method arranged according to a process in four stages which are:
- un apprentissage dans lequel on réalise le positionnement de l'émetteur à diverses distances, afin de créer une matrice de points de référence (Di, Pli, P2i) ,- learning in which the positioning of the transmitter is carried out at various distances, in order to create a matrix of reference points (Di, Pli, P2i),
une modélisation, par laquelle l'algorithme (A) de modélisation recherche la fonction approchée passant par l'ensemble des points de référence de la matrice, par résolution d'un système d'équations, (Pr2i - Prii) / Pm = (f(Di+a)- f(Di))/ f (Di) .
une résolution, par laquelle on applique ladite fonction modélisee afin d'évaluer la distance recherchée (D) à partir de la mesure des puissances reçues,a modeling, by which the modeling algorithm (A) searches for the approximate function passing through the set of reference points of the matrix, by solving a system of equations, (P r 2i - Prii) / Pm = (f (Di + a) - f (Di)) / f (Di). a resolution, by which said modeled function is applied in order to evaluate the distance sought (D) from the measurement of the powers received,
et, dans le cas où la distance recherchée est également mesurée par un système autre, cette donnée vient s'ajouter à la matrice de points de référence (Di, Pli, P2i) , avec pour conséquence la modification automatique de ladite fonction (f) .
and, in the case where the distance sought is also measured by another system, this data is added to the matrix of reference points (Di, Pli, P2i), with the consequence of the automatic modification of said function (f) .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2002366132A AU2002366132A1 (en) | 2001-11-21 | 2002-11-21 | Device for locating the origin of a radiating source, in particular by measuring the distance separating it from said radiating source, the distance being obtained by measuring the power of the received signal |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR01/15040 | 2001-11-21 | ||
| FR0115040A FR2832510B3 (en) | 2001-11-21 | 2001-11-21 | DEVICE FOR LOCATING THE ORIGIN OF A RADIANT SOURCE, IN PARTICULAR BY MEASURING THE DISTANCE SEPARATING FROM SAID RADIANT SOURCE |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2003044557A1 true WO2003044557A1 (en) | 2003-05-30 |
Family
ID=8869618
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/FR2002/003995 WO2003044557A1 (en) | 2001-11-21 | 2002-11-21 | Device for locating the origin of a radiating source, in particular by measuring the distance separating it from said radiating source, the distance being obtained by measuring the power of the received signal |
Country Status (3)
| Country | Link |
|---|---|
| AU (1) | AU2002366132A1 (en) |
| FR (1) | FR2832510B3 (en) |
| WO (1) | WO2003044557A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008003282B4 (en) | 2008-01-05 | 2010-07-01 | µ-GPS OPTICS GMBH | Arrangement and method for determining a position of two objects relative to each other |
| FR3041167B1 (en) * | 2015-09-11 | 2019-05-31 | Valeo Comfort And Driving Assistance | ELECTRONIC CONTROL UNIT FOR A MOTOR VEHICLE AND METHOD FOR CONTROLLING THE FUNCTIONS OF THE MOTOR VEHICLE USING A MOBILE TERMINAL |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US566662A (en) * | 1896-08-25 | Douglas mackinnon baillie hamilton cochrane | ||
| US4494119A (en) * | 1983-08-04 | 1985-01-15 | 122923 Canada Limited | Distress radiolocation method and system |
| US5732354A (en) * | 1995-06-07 | 1998-03-24 | At&T Wireless Services, Inc. | Method and apparatus for determining the location of a mobile telephone |
| FR2794313A1 (en) * | 1999-05-31 | 2000-12-01 | Telediffusion Fse | Geographic positioning system for mobile telephone involves measurement of transmission power levels in current and adjacent cells and use of coordinates of current and adjacent cells |
| WO2001071374A2 (en) * | 2000-03-23 | 2001-09-27 | Qinetiq Limited | Localisation of a signal emitting source |
-
2001
- 2001-11-21 FR FR0115040A patent/FR2832510B3/en not_active Expired - Lifetime
-
2002
- 2002-11-21 AU AU2002366132A patent/AU2002366132A1/en not_active Abandoned
- 2002-11-21 WO PCT/FR2002/003995 patent/WO2003044557A1/en not_active Application Discontinuation
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US566662A (en) * | 1896-08-25 | Douglas mackinnon baillie hamilton cochrane | ||
| US4494119A (en) * | 1983-08-04 | 1985-01-15 | 122923 Canada Limited | Distress radiolocation method and system |
| US5732354A (en) * | 1995-06-07 | 1998-03-24 | At&T Wireless Services, Inc. | Method and apparatus for determining the location of a mobile telephone |
| FR2794313A1 (en) * | 1999-05-31 | 2000-12-01 | Telediffusion Fse | Geographic positioning system for mobile telephone involves measurement of transmission power levels in current and adjacent cells and use of coordinates of current and adjacent cells |
| WO2001071374A2 (en) * | 2000-03-23 | 2001-09-27 | Qinetiq Limited | Localisation of a signal emitting source |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2832510B3 (en) | 2004-01-23 |
| AU2002366132A1 (en) | 2003-06-10 |
| FR2832510A1 (en) | 2003-05-23 |
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