NO880981D0 - Fleravstandsintervall-birefleks-kanselleringskrets. - Google Patents
Fleravstandsintervall-birefleks-kanselleringskrets.Info
- Publication number
- NO880981D0 NO880981D0 NO880981A NO880981A NO880981D0 NO 880981 D0 NO880981 D0 NO 880981D0 NO 880981 A NO880981 A NO 880981A NO 880981 A NO880981 A NO 880981A NO 880981 D0 NO880981 D0 NO 880981D0
- Authority
- NO
- Norway
- Prior art keywords
- cancellation circuit
- distance interval
- clutter cancellation
- multi distance
- clutter
- Prior art date
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
- G01S13/52—Discriminating between fixed and moving objects or between objects moving at different speeds
- G01S13/522—Discriminating between fixed and moving objects or between objects moving at different speeds using transmissions of interrupted pulse modulated waves
- G01S13/524—Discriminating between fixed and moving objects or between objects moving at different speeds using transmissions of interrupted pulse modulated waves based upon the phase or frequency shift resulting from movement of objects, with reference to the transmitted signals, e.g. coherent MTi
- G01S13/53—Discriminating between fixed and moving objects or between objects moving at different speeds using transmissions of interrupted pulse modulated waves based upon the phase or frequency shift resulting from movement of objects, with reference to the transmitted signals, e.g. coherent MTi performing filtering on a single spectral line and associated with one or more range gates with a phase detector or a frequency mixer to extract the Doppler information, e.g. pulse Doppler radar
-
- 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
- G01S13/20—Systems for measuring distance only using transmission of interrupted, pulse modulated waves whereby multiple time-around echoes are used or eliminated
-
- 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
- G01S13/52—Discriminating between fixed and moving objects or between objects moving at different speeds
- G01S13/522—Discriminating between fixed and moving objects or between objects moving at different speeds using transmissions of interrupted pulse modulated waves
- G01S13/524—Discriminating between fixed and moving objects or between objects moving at different speeds using transmissions of interrupted pulse modulated waves based upon the phase or frequency shift resulting from movement of objects, with reference to the transmitted signals, e.g. coherent MTi
- G01S13/526—Discriminating between fixed and moving objects or between objects moving at different speeds using transmissions of interrupted pulse modulated waves based upon the phase or frequency shift resulting from movement of objects, with reference to the transmitted signals, e.g. coherent MTi performing filtering on the whole spectrum without loss of range information, e.g. using delay line cancellers or comb filters
Landscapes
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- General Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Radar Systems Or Details Thereof (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US06/882,582 US4688044A (en) | 1986-07-07 | 1986-07-07 | Multiple range interval clutter cancellation circuit |
| PCT/US1987/001653 WO1988000355A1 (en) | 1986-07-07 | 1987-07-06 | Multiple range interval clutter cancellation circuit |
Publications (4)
| Publication Number | Publication Date |
|---|---|
| NO880981L NO880981L (no) | 1988-03-04 |
| NO880981D0 true NO880981D0 (no) | 1988-03-04 |
| NO172821B NO172821B (no) | 1993-06-01 |
| NO172821C NO172821C (no) | 1993-09-08 |
Family
ID=25380910
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NO880981A NO172821C (no) | 1986-07-07 | 1988-03-04 | Krets for aa kansellere birefleks |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US4688044A (no) |
| EP (1) | EP0273970B1 (no) |
| JP (1) | JPH01500774A (no) |
| DE (1) | DE3779894T2 (no) |
| IL (1) | IL83042A (no) |
| NO (1) | NO172821C (no) |
| WO (1) | WO1988000355A1 (no) |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4800387A (en) * | 1984-02-07 | 1989-01-24 | Logimetrics, Inc. | Boresight chamber assembly apparatus |
| JPS60169782A (ja) * | 1984-02-14 | 1985-09-03 | Nec Corp | 移動目標表示装置 |
| US4890113A (en) * | 1987-12-09 | 1989-12-26 | Westinghouse Electric Corp. | Second time around clutter cancellation system |
| NL8800002A (nl) * | 1988-01-04 | 1988-04-05 | Hollandse Signaalapparaten Bv | Moving target indicatie-eenheid. |
| FR2662265A1 (fr) * | 1990-05-18 | 1991-11-22 | Philips Electronique Lab | Dispositif eliminateur d'echos fixes pour echographe ultrasonore. |
| US5150426A (en) * | 1990-11-20 | 1992-09-22 | Hughes Aircraft Company | Moving target detection method using two-frame subtraction and a two quadrant multiplier |
| FR2712094B1 (fr) * | 1993-11-02 | 1995-12-01 | Thomson Csf | Procédé de détermination du rang d'ambiguïté en distance d'échos radar. |
| FR2719669B1 (fr) * | 1994-05-03 | 1996-06-07 | Thomson Csf | Procédé et dispositif d'élimination des échos fixes en fréquence intermédiaire dans un radar à impulsions cohérentes. |
| JPH08228409A (ja) * | 1995-02-22 | 1996-09-03 | Kyosan Electric Mfg Co Ltd | 現示決定処理装置 |
| US6867732B1 (en) * | 2004-08-10 | 2005-03-15 | Chung Shan Institute Of Science And Technology, Armanents Bureau, M.N.D. | Embedded multi-functional preprocessing input data buffer in radar system |
| US7095358B2 (en) * | 2004-11-23 | 2006-08-22 | Raytheon Company | Technique for cancellation of elevated clutter for the detection of fixed and ground moving targets under trees |
| WO2010103309A1 (en) | 2009-03-11 | 2010-09-16 | Bae Systems Plc | Sensor for determining velocity |
| US8471761B1 (en) * | 2010-04-23 | 2013-06-25 | Akela, Inc. | Wideband radar nulling system |
| US9864044B2 (en) * | 2014-06-25 | 2018-01-09 | Raytheon Company | Methods and systems for improving signal to phase noise in radars |
| EP3267224B1 (de) * | 2016-07-06 | 2019-02-27 | Riegl Laser Measurement Systems GmbH | Verfahren zur entfernungsmessung |
| CN108828546B (zh) * | 2018-05-24 | 2021-03-26 | 西安空间无线电技术研究所 | 一种天基多通道动目标雷达接收处理系统及方法 |
Family Cites Families (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB892282A (en) * | 1959-03-26 | 1962-03-21 | Marconi Wireless Telegraph Co | Improvements in or relating to pulsed radar systems |
| US3109171A (en) * | 1961-02-06 | 1963-10-29 | George L Henry | Three-pulse canceller for coherent mti systems |
| US4042924A (en) * | 1970-02-25 | 1977-08-16 | Hughes Aircraft Company | MTI clutter tracking and cancelling system |
| US3828348A (en) * | 1971-10-21 | 1974-08-06 | Hughes Aircraft Co | System for minimizing multiple time around echos in a coherent-on-receive-doppler radar |
| US3879729A (en) * | 1973-07-23 | 1975-04-22 | Gen Electric | Moving target indicator with minimum clutter interference |
| US4035799A (en) * | 1975-11-04 | 1977-07-12 | The United States Of America As Represented By The Secretary Of The Navy | Digital mean clutter doppler compensation system |
| US4003052A (en) * | 1975-12-15 | 1977-01-11 | United Technologies Corporation | Digital prefilter for clutter attenuation in MTI radars |
| US4137532A (en) * | 1977-04-29 | 1979-01-30 | Westinghouse Electric Corp. | VIP doppler filter bank signal processor for pulse doppler radar |
| US4086592A (en) * | 1977-07-22 | 1978-04-25 | The United States Of America As Represented By The Secretary Of The Navy | Digital sidelobe canceller |
| US4119962A (en) * | 1977-11-23 | 1978-10-10 | The United States Of America As Represented By The Secretary Of The Navy | Multiple memory adaptive MTI |
| US4318099A (en) * | 1980-02-21 | 1982-03-02 | The United States Of America As Represented By The Secretary Of The Navy | Clutter filter using a minimum number of radar pulses |
| IT1146164B (it) * | 1980-07-16 | 1986-11-12 | Selenia Ind Elettroniche | Dispositivo di filtraggio doppler adattivo alla situazione di clutter ed ecm esterna per impianti radar |
| US4489320A (en) * | 1981-08-07 | 1984-12-18 | The United States Of America As Represented By The Secretary Of The Navy | Interference suppressor for radar MTI |
| US4450448A (en) * | 1981-08-28 | 1984-05-22 | Grumman Aerospace Corporation | Apparatus and method for improving antenna sidelobe cancellation |
| US4390881A (en) * | 1982-06-09 | 1983-06-28 | The United States Of America As Respresented By The Secretary Of The Navy | Real-data digital-real-weight canceler |
| IT1197641B (it) * | 1983-05-04 | 1988-12-06 | Selenia Ind Elettroniche | Dispositivo per l'identificazione e la soppressione di echi indesiderati di seconda traccia in sistemi radar |
-
1986
- 1986-07-07 US US06/882,582 patent/US4688044A/en not_active Expired - Lifetime
-
1987
- 1987-06-30 IL IL83042A patent/IL83042A/xx not_active IP Right Cessation
- 1987-07-06 JP JP62504317A patent/JPH01500774A/ja active Granted
- 1987-07-06 WO PCT/US1987/001653 patent/WO1988000355A1/en active IP Right Grant
- 1987-07-06 DE DE8787904787T patent/DE3779894T2/de not_active Expired - Fee Related
- 1987-07-06 EP EP87904787A patent/EP0273970B1/en not_active Expired - Lifetime
-
1988
- 1988-03-04 NO NO880981A patent/NO172821C/no unknown
Also Published As
| Publication number | Publication date |
|---|---|
| NO172821C (no) | 1993-09-08 |
| JPH0529875B2 (no) | 1993-05-06 |
| DE3779894D1 (de) | 1992-07-23 |
| DE3779894T2 (de) | 1992-12-24 |
| IL83042A (en) | 1991-06-10 |
| NO880981L (no) | 1988-03-04 |
| US4688044A (en) | 1987-08-18 |
| JPH01500774A (ja) | 1989-03-16 |
| EP0273970A1 (en) | 1988-07-13 |
| WO1988000355A1 (en) | 1988-01-14 |
| NO172821B (no) | 1993-06-01 |
| EP0273970B1 (en) | 1992-06-17 |
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