GB2011749B - Fixed echo canceller for radar systems - Google Patents
Fixed echo canceller for radar systemsInfo
- Publication number
- GB2011749B GB2011749B GB7845813A GB7845813A GB2011749B GB 2011749 B GB2011749 B GB 2011749B GB 7845813 A GB7845813 A GB 7845813A GB 7845813 A GB7845813 A GB 7845813A GB 2011749 B GB2011749 B GB 2011749B
- Authority
- GB
- United Kingdom
- Prior art keywords
- echo canceller
- radar systems
- fixed echo
- fixed
- radar
- 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.)
- Expired
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
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/28—Details of pulse systems
- G01S7/285—Receivers
- G01S7/292—Extracting wanted echo-signals
- G01S7/2923—Extracting wanted echo-signals based on data belonging to a number of consecutive radar periods
- G01S7/2927—Extracting wanted echo-signals based on data belonging to a number of consecutive radar periods by deriving and controlling a threshold value
-
- 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
- G01S13/5246—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 post processors for coherent MTI discriminators, e.g. residue cancellers, CFAR after Doppler filters
-
- 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
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/28—Details of pulse systems
- G01S7/285—Receivers
- G01S7/34—Gain of receiver varied automatically during pulse-recurrence period, e.g. anti-clutter gain control
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)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7735043A FR2409521A1 (en) | 1977-11-22 | 1977-11-22 | FIXED ECHO ELIMINATION DEVICE, MORE PARTICULARLY ASSOCIATED WITH A RADAR SYSTEM AND RADAR SYSTEM INCLUDING IT |
Publications (2)
Publication Number | Publication Date |
---|---|
GB2011749A GB2011749A (en) | 1979-07-11 |
GB2011749B true GB2011749B (en) | 1982-06-16 |
Family
ID=9197892
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB7845813A Expired GB2011749B (en) | 1977-11-22 | 1978-11-22 | Fixed echo canceller for radar systems |
Country Status (4)
Country | Link |
---|---|
DE (1) | DE2850508C2 (en) |
FR (1) | FR2409521A1 (en) |
GB (1) | GB2011749B (en) |
IT (1) | IT1106337B (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2467412A1 (en) * | 1979-10-10 | 1981-04-17 | Thomson Csf | Digital AGC circuit for radar target detector - has gain controlled from memorised signal from counter and digital integrator circuits |
NL7908860A (en) * | 1979-12-10 | 1981-07-01 | Hollandse Signaalapparaten Bv | THRESHOLD FOR RADAR VIDEO SIGNALS. |
DE3127065A1 (en) * | 1981-07-09 | 1983-01-27 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Method for suppressing noise echoes in radar installations and arrangement to carry out the method |
DE3209399A1 (en) * | 1982-03-16 | 1983-09-29 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Method and arrangement for improving the signal/noise ratio in radar systems |
DE3213430A1 (en) * | 1982-04-10 | 1983-10-20 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Method and arrangement for target recognition and noise signal suppression in radar sets |
DE3933437A1 (en) * | 1989-10-06 | 1991-04-18 | Diehl Gmbh & Co | Radar installation range and orientation determination - uses processors to determine range and orientation in conjunction with data reduction equipment to simplify final processing |
DE102005023787A1 (en) * | 2005-05-19 | 2006-11-23 | Selex Sistemi Intergrati Gmbh | Method and device for correcting weather data and computer program product |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1245452B (en) * | 1965-06-02 | 1967-07-27 | Int Standard Electric Corp | Radar system with display reduction of longer fixed target echoes |
US3786506A (en) * | 1972-03-10 | 1974-01-15 | Hughes Aircraft Co | Dynamic range control system |
US4058809A (en) * | 1972-06-26 | 1977-11-15 | Control Data Corporation | MTI system and method |
NL174675C (en) * | 1976-09-06 | 1984-07-16 | Hollandse Signaalapparaten Bv | DEVICE FOR GENERATING THE CONTROL VOLTAGE FOR THE AUTOMATIC STRENGTH CONTROL OF AN IMPULSE RADAR DEVICE. |
FR2377640A1 (en) * | 1977-01-18 | 1978-08-11 | Thomson Csf | DEVICE FOR STABILIZING THE RATE OF FALSE ALARMS IN A RADAR AND RADAR SYSTEM INCLUDING SUCH A DEVICE |
-
1977
- 1977-11-22 FR FR7735043A patent/FR2409521A1/en active Granted
-
1978
- 1978-11-21 DE DE2850508A patent/DE2850508C2/en not_active Expired
- 1978-11-21 IT IT51989/78A patent/IT1106337B/en active
- 1978-11-22 GB GB7845813A patent/GB2011749B/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
IT1106337B (en) | 1985-11-11 |
FR2409521A1 (en) | 1979-06-15 |
GB2011749A (en) | 1979-07-11 |
FR2409521B1 (en) | 1982-10-22 |
IT7851989A0 (en) | 1978-11-21 |
DE2850508A1 (en) | 1979-06-13 |
DE2850508C2 (en) | 1985-01-03 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |