FR2494855A1 - Radar doppler de surveillance terrestre - Google Patents
Radar doppler de surveillance terrestre Download PDFInfo
- Publication number
- FR2494855A1 FR2494855A1 FR8025185A FR8025185A FR2494855A1 FR 2494855 A1 FR2494855 A1 FR 2494855A1 FR 8025185 A FR8025185 A FR 8025185A FR 8025185 A FR8025185 A FR 8025185A FR 2494855 A1 FR2494855 A1 FR 2494855A1
- Authority
- FR
- France
- Prior art keywords
- pulses
- frequency
- binary
- distance
- threshold circuit
- 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
- 230000003595 spectral effect Effects 0.000 title claims abstract description 6
- 238000000034 method Methods 0.000 title description 3
- 230000008569 process Effects 0.000 title description 2
- 230000005540 biological transmission Effects 0.000 claims abstract description 6
- 230000000306 recurrent effect Effects 0.000 claims description 7
- 238000010183 spectrum analysis Methods 0.000 claims description 3
- 239000000969 carrier Substances 0.000 claims 1
- 230000001427 coherent effect Effects 0.000 abstract 1
- 230000000875 corresponding effect Effects 0.000 description 13
- 238000005259 measurement Methods 0.000 description 10
- 238000001514 detection method Methods 0.000 description 7
- 230000008859 change Effects 0.000 description 3
- 238000002592 echocardiography Methods 0.000 description 3
- 238000001228 spectrum Methods 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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
- G01S13/5246—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
- 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
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)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8025185A FR2494855A1 (fr) | 1980-11-27 | 1980-11-27 | Radar doppler de surveillance terrestre |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8025185A FR2494855A1 (fr) | 1980-11-27 | 1980-11-27 | Radar doppler de surveillance terrestre |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2494855A1 true FR2494855A1 (fr) | 1982-05-28 |
| FR2494855B1 FR2494855B1 (enExample) | 1984-09-21 |
Family
ID=9248404
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR8025185A Granted FR2494855A1 (fr) | 1980-11-27 | 1980-11-27 | Radar doppler de surveillance terrestre |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2494855A1 (enExample) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3631585A1 (de) * | 1986-09-17 | 1988-03-31 | Licentia Gmbh | Verfahren zur verringerung von falschzielmeldungen in einem pulsdopplerradar |
| US4901082A (en) * | 1988-11-17 | 1990-02-13 | Grumman Aerospace Corporation | Adaptive waveform radar |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3725926A (en) * | 1969-03-11 | 1973-04-03 | Us Air Force | Frequency diversified radar system |
-
1980
- 1980-11-27 FR FR8025185A patent/FR2494855A1/fr active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3725926A (en) * | 1969-03-11 | 1973-04-03 | Us Air Force | Frequency diversified radar system |
Non-Patent Citations (1)
| Title |
|---|
| EXBK/71 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3631585A1 (de) * | 1986-09-17 | 1988-03-31 | Licentia Gmbh | Verfahren zur verringerung von falschzielmeldungen in einem pulsdopplerradar |
| EP0260670A3 (en) * | 1986-09-17 | 1990-05-16 | Telefunken Systemtechnik | Method for reducing false target indications in a pulse doppler radar |
| US4901082A (en) * | 1988-11-17 | 1990-02-13 | Grumman Aerospace Corporation | Adaptive waveform radar |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2494855B1 (enExample) | 1984-09-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |