FR2832510A1 - Circuit for location of radiation source has pair of receivers and computer to process signal strength to determine distance - Google Patents
Circuit for location of radiation source has pair of receivers and computer to process signal strength to determine distance Download PDFInfo
- Publication number
- FR2832510A1 FR2832510A1 FR0115040A FR0115040A FR2832510A1 FR 2832510 A1 FR2832510 A1 FR 2832510A1 FR 0115040 A FR0115040 A FR 0115040A FR 0115040 A FR0115040 A FR 0115040A FR 2832510 A1 FR2832510 A1 FR 2832510A1
- Authority
- FR
- France
- Prior art keywords
- distance
- source
- receivers
- receiver
- location
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
-
- 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
-
- 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
-
- 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
-
- 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
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Electromagnetism (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Abstract
Description
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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. 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 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 des informations relevées. Devices are already known making it possible to locate a radiating source by a triangulation method: by positioning the device at different points in space and by locating 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 intersecting the information recorded.
Cette technique de localisation est souvent utilisée dans la localisation de sources émettrices actives (goniomètre par exemple) mais présente un coût de mise en oeuvre important. This localization technique is often used in the localization of active emitting sources (goniometer for example) but presents a significant cost of implementation.
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. Devices are also known which make it possible to measure the distance between a radiating source and the measuring device by measuring the propagation time of the wave. Knowing the wave propagation speed it is possible to determine the distance.
Cette technique de mesure de distance 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. This distance measurement technique 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.
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 dispositif 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 localiser. 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 etc. Aussi, ces dispositifs existants ne peuvent mesurer la distance entre la source We also know the law of progression of a wave. It is known in particular that the received power decreases as a function of the distance between the emitting source and the receiving device. The interpretation of this law makes it possible to evaluate the distance between the emitting source and the receiving device. Devices are known using the reflection of an infrared wave intended to measure the distance between the measuring device and the reflecting surface intended to be located. Devices are also known for evaluating the distance between a receiver and a radio transmitting source and for authorizing an action, the unlocking of door openings 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 other parameters such as the transmission power, the sensitivity of the receiver etc. Also, these existing devices cannot measure the distance between the source
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émettrice et le dispositif de réception qu'à la condition de connaître la puissance d'émission et la sensibilité du récepteur. transmitter and the receiving device only on condition of knowing the transmission 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 oeuvre. The object of the present invention is to remedy this shortcoming by proposing a device making it possible to measure the distance separating it from an emitting source, without knowing the power of said emitting source or the sensitivity of the receiver, while being of low cost. 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, 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, in processing the signals received by means of a mathematical function making it possible to give the distance separating the emitting 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. The emitting source emits a wave, for example of sound, light or radio type. This source is an active emitting source, or else it emits a wave according to the laws of reflection and diffraction.
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 appended drawing, which represents several non-limiting embodiments thereof.
Dans le dessin annexé : - la figure 1 représente une vue schématique d'un dispositif de localisation de l'origine d'une source rayonnante selon l'invention. In the appended drawing: 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. - Figure 2 shows 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. With reference to FIG. 1, one can see a device according to the invention using two receiving means Ri and R2 aligned with an emitting 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 : P, = S. ./ (x) ou Pr est la puissance reçue, P1 est la puissance d'émission, S est la sensibilité du récepteur et la fonction de décroissance connue de la puissance en fonction de l'éloignement entre la source émettrice et le We know that the power received at a distance x from the transmitting source is of the form: P, = S. ./ (x) where Pr is the received power, P1 is the transmission power, S is the sensitivity of the receiver and the known decrease function of the power as a function of the distance between the emitting source and the
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récepteur. Cette fonction est indépendante de la puissance d'émission et de la sensibilité du récepteur. Généralement cette
1 fonction est de la forme f (x) = 2"". x
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 Ri et R2. receiver. This function is independent of the transmission power and the sensitivity of the receiver. Usually this
1 function has the form f (x) = 2 "". x
The distance between the emitting source E and the first receiver Ri is called D. The distance between the emitting source and the second receiver R2 is therefore D + a, a being the distance
separating the two receiving means Ri and R2.
La puissance reçue par le récepteur le plus proche Ri est : pr1=s. P.. f (D)
La puissance reçue par le récepteur le plus éloigné R2 est : Prz=S. P. f (D+a)
En calculant (pr2 - pr1) / pr1 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. The power received by the nearest receiver Ri is: pr1 = s. P .. f (D)
The power received by the most distant receiver R2 is: Prz = SP f (D + a)
By calculating (pr2 - pr1) / pr1 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 be measured D and of the difference a between the two receptors Ri and R2. If we know the function f and a, we can deduce the desired distance D.
(pr2 - pr1) / pr1 = (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-l la fonction inverse de g, alors on évalue la distance recherchée D par D = g-l ( (Pr2 - Prl)/Prl)
Par exemple, dans le cas ou f (x) est de la forme f (x) ='y et x dans l'hypothèse où la distance D est importante devant l'écart a entre les deux moyens récepteurs Ri et R2, on obtient en première approximation (Pr2-Pri)/Pri =-2a/D c'est à dire D =-2a Prl/ (Pr2-Prl)
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 R1 et R2. (pr2 - pr1) / pr1 = (f (D + a) -f (D)) / f (D)
If we denote by g (D) the function g (D) = (f (D + a) -f (D)) / f (D) and gl the inverse function of g, then we evaluate the desired distance D by D = gl ((Pr2 - Prl) / Prl)
For example, in the case where f (x) is of the form f (x) = 'y and x in the hypothesis where the distance D is large compared to the difference a between the two receiving means Ri and R2, we obtain as a first approximation (Pr2-Pri) / Pri = -2a / D i.e. D = -2a Prl / (Pr2-Prl)
In the case where the emitting source E and the receivers Ri and R2 are not aligned, the principle described above makes it possible to evaluate the distance projected on the axis passing through the two receiving means R1 and R2.
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 Referring now to FIG. 2, one can see a device according to the invention using a third receiving means R3, which makes it possible to obtain the distance projected on a second axis and
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de permettre la localisation de la source émettrice E sur un plan en deux dimensions. to 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 can be extended to three dimensions by 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 emitting source is a radio wave transmitter, and by having a system equipped with three receivers, this makes it possible to locate the origin of the emitting source, whatever its transmission power, and to operate a action if this source is in a predefined cellular space.
Claims (1)
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| 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 |
| 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 |
| 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 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| 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 (2)
| Publication Number | Publication Date |
|---|---|
| FR2832510A1 true FR2832510A1 (en) | 2003-05-23 |
| FR2832510B3 FR2832510B3 (en) | 2004-01-23 |
Family
ID=8869618
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR0115040A Expired - Lifetime 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 |
Country Status (3)
| Country | Link |
|---|---|
| AU (1) | AU2002366132A1 (en) |
| FR (1) | FR2832510B3 (en) |
| WO (1) | WO2003044557A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009087061A1 (en) | 2008-01-05 | 2009-07-16 | µ-GPS Optics GmbH | Arrangement and method for determination of a position and/or orientation of two objects relative to one another |
| WO2017042374A1 (en) * | 2015-09-11 | 2017-03-16 | Valeo Comfort And Driving Assistance | Electronic unit for controlling automotive vehicle and method of monitoring functionalities of the automotive vehicle by means of a mobile terminal |
Family Cites Families (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 |
| GB0006893D0 (en) * | 2000-03-23 | 2000-12-20 | Secr Defence | Localisation of a signal emitting source |
-
2001
- 2001-11-21 FR FR0115040A patent/FR2832510B3/en not_active Expired - Lifetime
-
2002
- 2002-11-21 WO PCT/FR2002/003995 patent/WO2003044557A1/en not_active Application Discontinuation
- 2002-11-21 AU AU2002366132A patent/AU2002366132A1/en not_active Abandoned
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009087061A1 (en) | 2008-01-05 | 2009-07-16 | µ-GPS Optics GmbH | Arrangement and method for determination of a position and/or orientation of two objects relative to one another |
| WO2017042374A1 (en) * | 2015-09-11 | 2017-03-16 | Valeo Comfort And Driving Assistance | Electronic unit for controlling automotive vehicle and method of monitoring functionalities of the automotive vehicle by means of a mobile terminal |
| FR3041167A1 (en) * | 2015-09-11 | 2017-03-17 | Valeo Comfort & Driving Assistance | ELECTRONIC CONTROL UNIT FOR A MOTOR VEHICLE AND METHOD FOR CONTROLLING THE FUNCTIONS OF THE MOTOR VEHICLE USING A MOBILE TERMINAL |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2832510B3 (en) | 2004-01-23 |
| WO2003044557A1 (en) | 2003-05-30 |
| AU2002366132A1 (en) | 2003-06-10 |
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