NL188966B - RADAR SYSTEM PROCESSOR FOR DETECTING SIGNALS IN THE PRESENCE OF CLUTTER. - Google Patents
RADAR SYSTEM PROCESSOR FOR DETECTING SIGNALS IN THE PRESENCE OF CLUTTER.Info
- Publication number
- NL188966B NL188966B NLAANVRAGE8102044,A NL8102044A NL188966B NL 188966 B NL188966 B NL 188966B NL 8102044 A NL8102044 A NL 8102044A NL 188966 B NL188966 B NL 188966B
- Authority
- NL
- Netherlands
- Prior art keywords
- clutter
- radar system
- system processor
- detecting signals
- signals
- 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
- G01S13/526—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
-
- 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
- G01S13/5248—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 combining a coherent MTI processor with a zero Doppler processing channel and a clutter mapped memory, e.g. MTD (Moving target detector)
-
- 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
- G01S13/532—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 using a bank of range gates or a memory matrix
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 |
|---|---|---|---|
| US14356980A | 1980-04-25 | 1980-04-25 | |
| US14356980 | 1980-04-25 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| NL8102044A NL8102044A (en) | 1981-11-16 |
| NL188966B true NL188966B (en) | 1992-06-16 |
| NL188966C NL188966C (en) | 1992-11-16 |
Family
ID=22504630
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NLAANVRAGE8102044,A NL188966C (en) | 1980-04-25 | 1981-04-24 | RADAR SYSTEM PROCESSOR FOR DETECTING SIGNALS IN THE PRESENCE OF CLUTTER. |
Country Status (8)
| Country | Link |
|---|---|
| JP (1) | JPS56168576A (en) |
| AU (1) | AU544117B2 (en) |
| CA (1) | CA1183249A (en) |
| DE (1) | DE3116390C2 (en) |
| FR (1) | FR2481464B1 (en) |
| GB (1) | GB2074807B (en) |
| IT (1) | IT1142410B (en) |
| NL (1) | NL188966C (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1168614B (en) * | 1983-07-15 | 1987-05-20 | Selenia Ind Elettroniche | MTD DIGITAL PROCESSOR FOR SEARCH RADAR WITH BENCH OF DOPPLER FILTERS AND SYSTEM OF SELF-ADJUSTABLE THRESHOLDS DEPENDING ON THE DISORDER |
| GB2175767B (en) * | 1985-05-28 | 1989-07-26 | Standard Telephones Cables Ltd | Radar systems. |
| DE3526632A1 (en) * | 1985-07-25 | 1987-02-05 | Krauss Maffei Ag | METHOD AND DEVICE FOR PRODUCING AN INJECTION MOLDING PART |
| FI76889C (en) * | 1987-02-17 | 1988-12-12 | Kone Oy | FOERFARANDE FOER VAL AV FUNKTIONSSAETT VID EN ANORDNING SOM ANVAENDS FOER RAEKNING AV OBJEKT INOM ETT VISST OMRAODE. |
| FR2628845B1 (en) * | 1988-03-18 | 1990-11-16 | Thomson Csf | DEVICE FOR ELIMINATING MOBILE CLUSTER IN A RADAR |
| US6870502B1 (en) | 2003-08-29 | 2005-03-22 | Raytheon Company | Advanced asynchronous pulse detector |
| ATE519126T1 (en) | 2004-06-24 | 2011-08-15 | Bae Systems Plc | IMPROVEMENTS TO VELOCITY EXTRACTION |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3109171A (en) * | 1961-02-06 | 1963-10-29 | George L Henry | Three-pulse canceller for coherent mti systems |
| US3404399A (en) * | 1966-04-22 | 1968-10-01 | Hughes Aircraft Co | Digital clutter rejection system |
| FR94959E (en) * | 1967-12-20 | 1970-02-27 | Csf | Device for filtering echoes in electromagnetic detection devices with discontinuous scanning. |
| US3721978A (en) * | 1968-11-19 | 1973-03-20 | Motorola Inc | Adaptive radar clutter rejection |
| FR2044605A5 (en) * | 1969-05-28 | 1971-02-19 | Labo Cent Telecommunicat | |
| US3962704A (en) * | 1974-05-31 | 1976-06-08 | Hughes Aircraft Company | Moving target indicator clutter tracker |
| GB1545849A (en) * | 1975-04-03 | 1979-05-16 | Nippon Electric Co | Moving target indication radar |
| US4153899A (en) * | 1976-03-10 | 1979-05-08 | Westinghouse Electric Corp. | MTI radar system and method |
| US4117538A (en) * | 1977-05-04 | 1978-09-26 | Raytheon Company | Radar system with specialized weighting |
-
1981
- 1981-03-25 CA CA000373802A patent/CA1183249A/en not_active Expired
- 1981-04-08 AU AU69314/81A patent/AU544117B2/en not_active Ceased
- 1981-04-08 GB GB811005A patent/GB2074807B/en not_active Expired
- 1981-04-14 FR FR8107443A patent/FR2481464B1/en not_active Expired
- 1981-04-22 IT IT48325/81A patent/IT1142410B/en active
- 1981-04-22 JP JP6112281A patent/JPS56168576A/en active Granted
- 1981-04-24 NL NLAANVRAGE8102044,A patent/NL188966C/en not_active IP Right Cessation
- 1981-04-24 DE DE3116390A patent/DE3116390C2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPS56168576A (en) | 1981-12-24 |
| GB2074807A (en) | 1981-11-04 |
| NL8102044A (en) | 1981-11-16 |
| FR2481464B1 (en) | 1986-04-04 |
| FR2481464A1 (en) | 1981-10-30 |
| AU6931481A (en) | 1981-10-29 |
| AU544117B2 (en) | 1985-05-16 |
| GB2074807B (en) | 1984-06-20 |
| DE3116390A1 (en) | 1982-06-03 |
| CA1183249A (en) | 1985-02-26 |
| IT1142410B (en) | 1986-10-08 |
| NL188966C (en) | 1992-11-16 |
| JPH0341796B2 (en) | 1991-06-25 |
| IT8148325A0 (en) | 1981-04-22 |
| DE3116390C2 (en) | 1994-06-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A85 | Still pending on 85-01-01 | ||
| BA | A request for search or an international-type search has been filed | ||
| BB | A search report has been drawn up | ||
| BC | A request for examination has been filed | ||
| V4 | Discontinued because of reaching the maximum lifetime of a patent |
Free format text: 20010424 |