FR2411418A1 - Procede et dispositif d'elimination des echos de retours multiples pour radars doppler a impulsions - Google Patents
Procede et dispositif d'elimination des echos de retours multiples pour radars doppler a impulsionsInfo
- Publication number
- FR2411418A1 FR2411418A1 FR7736971A FR7736971A FR2411418A1 FR 2411418 A1 FR2411418 A1 FR 2411418A1 FR 7736971 A FR7736971 A FR 7736971A FR 7736971 A FR7736971 A FR 7736971A FR 2411418 A1 FR2411418 A1 FR 2411418A1
- Authority
- FR
- France
- Prior art keywords
- echo
- pulse doppler
- return echoes
- multiple return
- previous
- 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
Links
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
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
- G01S13/50—Systems of measurement based on relative movement of target
- G01S13/58—Velocity or trajectory determination systems; Sense-of-movement determination systems
- G01S13/64—Velocity measuring systems using range gates
-
- 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
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
- G01S13/06—Systems determining position data of a target
- G01S13/08—Systems for measuring distance only
- G01S13/10—Systems for measuring distance only using transmission of interrupted, pulse modulated waves
- G01S13/22—Systems for measuring distance only using transmission of interrupted, pulse modulated waves using irregular pulse repetition frequency
- G01S13/225—Systems for measuring distance only using transmission of interrupted, pulse modulated waves using irregular pulse repetition frequency with cyclic repetition of a non-uniform pulse sequence, e.g. staggered PRF
Landscapes
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar Systems Or Details Thereof (AREA)
Abstract
L'INVENTION CONCERNE UN PROCEDE ET UN DISPOSITIF D'ELIMINATION DES ECHOS DE RETOURS MULTIPLES DANS UN RADAR DOPPLER A IMPULSIONS NON EQUIDISTANTES COHERENT SEULEMENT A LA RECEPTION. LE PRINCIPE DE L'INVENTION CONSISTE, POUR CHAQUE PORTE EN DISTANCE, A RECONNAITRE UN ECHO DE RETOURS MULTIPLES, PUIS A REMPLACER ALORS L'IMPULSION DE PHASE POLLUEE PAR LA PRECEDENTE. LA RECONNAISSANCE D'UN ECHO DE RETOURS MULTIPLES SE FAIT EN CALCULANT LA VALEUR ABSOLUE DE LA DIFFERENCE ENTRE LES DEUX DERNIERES IMPULSIONS DE PHASE RECUES, PUIS EN COMPARANT CETTE VALEUR ABSOLUE A LA MOYENNE DES N VALEURS ABSOLUES PRECEDENTES. UN ECHO DE RETOURS MULTIPLES EST RECONNU SI LE RESULTAT DU RAPPORT EST EGAL OU SUPERIEUR A UNE VALEUR DONNEE K. APPLICATION AUX RADARS.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7736971A FR2411418A1 (fr) | 1977-12-08 | 1977-12-08 | Procede et dispositif d'elimination des echos de retours multiples pour radars doppler a impulsions |
US05/967,076 US4214242A (en) | 1977-12-08 | 1978-12-06 | Method and apparatus for eliminating multiple-time echoes in pulse Doppler radars |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7736971A FR2411418A1 (fr) | 1977-12-08 | 1977-12-08 | Procede et dispositif d'elimination des echos de retours multiples pour radars doppler a impulsions |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2411418A1 true FR2411418A1 (fr) | 1979-07-06 |
FR2411418B1 FR2411418B1 (fr) | 1984-01-20 |
Family
ID=9198612
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7736971A Granted FR2411418A1 (fr) | 1977-12-08 | 1977-12-08 | Procede et dispositif d'elimination des echos de retours multiples pour radars doppler a impulsions |
Country Status (2)
Country | Link |
---|---|
US (1) | US4214242A (fr) |
FR (1) | FR2411418A1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0176652A2 (fr) * | 1984-09-25 | 1986-04-09 | Siemens-Albis Aktiengesellschaft | Circuit pour la suppression des échos de trace multiple dans les radars Doppler à impulsions |
Families Citing this family (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL8100606A (nl) * | 1981-02-09 | 1982-09-01 | Hollandse Signaalapparaten Bv | Impulsraderapparaat. |
IT1189387B (it) * | 1982-10-15 | 1988-02-04 | Selenia Ind Elettroniche | Dispositivo di cancellazione automatica di echi radar indesiderati di seconda traccia e/o da grande distanza |
DE3321263A1 (de) * | 1983-06-13 | 1984-12-13 | Siemens AG, 1000 Berlin und 8000 München | Puls-doppler-radargeraet mit veraenderbarer pulsfolgefrequenz |
DE3326116A1 (de) * | 1983-07-20 | 1985-01-31 | Siemens AG, 1000 Berlin und 8000 München | Puls-doppler-radargeraet |
NL8403758A (nl) * | 1984-12-11 | 1986-07-01 | Hollandse Signaalapparaten Bv | Impulsradarapparaat. |
US4973968A (en) * | 1986-03-07 | 1990-11-27 | Plessey Overseas Limited | Radar system for determining first time around targets from multiple time around targets |
DE4104907C1 (fr) * | 1991-02-18 | 1992-08-27 | Dornier Gmbh, 7990 Friedrichshafen, De | |
US5574552A (en) * | 1995-01-19 | 1996-11-12 | Laser Technology, Inc. | Self-calibrating precision timing circuit and method for a laser range finder |
US5652651A (en) * | 1995-01-19 | 1997-07-29 | Laser Technology, Inc. | Laser range finder having selectable target acquisition characteristics and range measuring precision |
US5612779A (en) * | 1995-01-19 | 1997-03-18 | Laser Technology, Inc. | Automatic noise threshold determining circuit and method for a laser range finder |
US5926260A (en) * | 1995-01-19 | 1999-07-20 | Laser Technology, Inc. | Compact laser-based distance measuring apparatus |
WO1996022509A1 (fr) * | 1995-01-19 | 1996-07-25 | Laser Technology, Inc. | Telemetre laser |
US5923280A (en) * | 1997-01-17 | 1999-07-13 | Automotive Systems Laboratory, Inc. | Vehicle collision radar with randomized FSK wave form |
DE10392628D2 (de) * | 2002-06-18 | 2005-02-03 | Adc Automotive Dist Control | Verfahren zur Unterdrückung von Störungen in Systemen zur Objekterfassung |
US7444365B2 (en) * | 2002-06-18 | 2008-10-28 | A.D.C. Automotive Distance Control Systems Gmbh | Non-linear digital rank filtering of input signal values |
IL175465A (en) * | 2005-10-19 | 2013-02-28 | Elta Systems Ltd | Pulse doppler coherent method and system for snr enhancement |
US7684017B2 (en) | 2006-10-26 | 2010-03-23 | Callaway Golf Company | Laser range finder for use on a golf course |
US7612707B2 (en) * | 2007-09-28 | 2009-11-03 | Banner Engineering Corporation | Configurable radar sensor |
EP2743722A1 (fr) * | 2012-12-14 | 2014-06-18 | BAE Systems PLC | Atténuation des effets de propagation anormaux dans un radar |
US9810773B2 (en) * | 2012-12-14 | 2017-11-07 | Bae Systems Plc | Mitigation of anomalous propagation effects in radar |
JP6327656B2 (ja) * | 2015-07-09 | 2018-05-23 | エスゼット ディージェイアイ テクノロジー カンパニー リミテッドSz Dji Technology Co.,Ltd | 超音波距離検出のための装置、方法、プログラム、及びモバイルプラットフォーム |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB807022A (en) * | 1955-06-22 | 1959-01-07 | Cossor Ltd A C | Improvements in radar circuits |
US3406400A (en) * | 1967-05-17 | 1968-10-15 | United Aircraft Corp | High resolution radar |
US3618088A (en) * | 1970-02-26 | 1971-11-02 | Us Federal Aviation Admin | Second-time-around echo immune radar system |
FR2333246A2 (fr) * | 1975-11-24 | 1977-06-24 | Patelhold Patentverwertung | Procede des mesures des frequences et de la duree de periode dans des paquets d'ondes non coherents |
US4047172A (en) * | 1972-05-30 | 1977-09-06 | General Electric Company | Signal processor for pulse-echo system providing interference level compensation and feed-forward normalization |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1515000A (fr) * | 1966-09-21 | 1968-03-01 | Labo Cent Telecommunicat | Perfectionnements aux radars doppler cohérents à impulsions |
US4153899A (en) * | 1976-03-10 | 1979-05-08 | Westinghouse Electric Corp. | MTI radar system and method |
-
1977
- 1977-12-08 FR FR7736971A patent/FR2411418A1/fr active Granted
-
1978
- 1978-12-06 US US05/967,076 patent/US4214242A/en not_active Expired - Lifetime
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB807022A (en) * | 1955-06-22 | 1959-01-07 | Cossor Ltd A C | Improvements in radar circuits |
US3406400A (en) * | 1967-05-17 | 1968-10-15 | United Aircraft Corp | High resolution radar |
US3618088A (en) * | 1970-02-26 | 1971-11-02 | Us Federal Aviation Admin | Second-time-around echo immune radar system |
US4047172A (en) * | 1972-05-30 | 1977-09-06 | General Electric Company | Signal processor for pulse-echo system providing interference level compensation and feed-forward normalization |
FR2333246A2 (fr) * | 1975-11-24 | 1977-06-24 | Patelhold Patentverwertung | Procede des mesures des frequences et de la duree de periode dans des paquets d'ondes non coherents |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0176652A2 (fr) * | 1984-09-25 | 1986-04-09 | Siemens-Albis Aktiengesellschaft | Circuit pour la suppression des échos de trace multiple dans les radars Doppler à impulsions |
EP0176652A3 (en) * | 1984-09-25 | 1987-05-20 | Siemens-Albis Aktiengesellschaft | Process and circuit for the suppression of multiple time-around echoes in pulse doppler radars |
Also Published As
Publication number | Publication date |
---|---|
FR2411418B1 (fr) | 1984-01-20 |
US4214242A (en) | 1980-07-22 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
CA | Change of address | ||
TP | Transmission of property |