SE7903654L - Filter - Google Patents
FilterInfo
- Publication number
- SE7903654L SE7903654L SE7903654A SE7903654A SE7903654L SE 7903654 L SE7903654 L SE 7903654L SE 7903654 A SE7903654 A SE 7903654A SE 7903654 A SE7903654 A SE 7903654A SE 7903654 L SE7903654 L SE 7903654L
- Authority
- SE
- Sweden
- Prior art keywords
- pct
- series
- filter
- pulse
- mti
- 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
- G01S13/06—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
- G01S13/24—Systems for measuring distance only using transmission of interrupted, pulse modulated waves using frequency agility of carrier wave
-
- 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)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar Systems Or Details Thereof (AREA)
Priority Applications (10)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE7903654A SE417138B (sv) | 1979-04-25 | 1979-04-25 | Mti-filter ingaende i mottagaren i en foljeradar |
| DE803041459A DE3041459A1 (en) | 1979-04-25 | 1980-04-23 | Mti-filter in a tracking radar receiver |
| JP55500983A JPH0131154B2 (sv) | 1979-04-25 | 1980-04-23 | |
| CH9489/80A CH651937A5 (de) | 1979-04-25 | 1980-04-23 | Verfolgungsradarempfaenger mit einem mti-filter. |
| GB8113280A GB2072989B (en) | 1979-04-25 | 1980-04-23 | Mti-filter in a tracking radar receiver |
| US06/227,083 US4385298A (en) | 1979-04-25 | 1980-04-23 | MTI-Filter in a trackding radar receiver |
| NLAANVRAGE8020159,A NL189625C (nl) | 1979-04-25 | 1980-04-23 | Mti-filter in de ontvangeenheid van een radarstelsel. |
| PCT/SE1980/000123 WO1980002327A1 (en) | 1979-04-25 | 1980-04-23 | Mti-filter in a tracking radar receiver |
| FR8009238A FR2455289A1 (fr) | 1979-04-25 | 1980-04-24 | Filtre eliminateur d'images parasites destine au recepteur d'un radar de poursuite |
| IT21627/80A IT1148797B (it) | 1979-04-25 | 1980-04-24 | Filtro di indicazione di bersaglio in movimento per ricevitori di radar di inseguimento |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE7903654A SE417138B (sv) | 1979-04-25 | 1979-04-25 | Mti-filter ingaende i mottagaren i en foljeradar |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| SE7903654L true SE7903654L (sv) | 1980-10-26 |
| SE417138B SE417138B (sv) | 1981-02-23 |
Family
ID=20337905
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE7903654A SE417138B (sv) | 1979-04-25 | 1979-04-25 | Mti-filter ingaende i mottagaren i en foljeradar |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US4385298A (sv) |
| JP (1) | JPH0131154B2 (sv) |
| CH (1) | CH651937A5 (sv) |
| DE (1) | DE3041459A1 (sv) |
| FR (1) | FR2455289A1 (sv) |
| GB (1) | GB2072989B (sv) |
| IT (1) | IT1148797B (sv) |
| NL (1) | NL189625C (sv) |
| SE (1) | SE417138B (sv) |
| WO (1) | WO1980002327A1 (sv) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| US4495501A (en) * | 1982-04-28 | 1985-01-22 | The United States Of America As Represented By The Secretary Of The Air Force | Method and means for providing frequency agile operation of MTI _radar |
| GB2204757B (en) * | 1983-08-25 | 1989-06-01 | Marconi Co Ltd | Radars |
| DE4235071C2 (de) * | 1992-10-17 | 1995-09-28 | Daimler Benz Aerospace Ag | Radargerät mit synthetischer Apertur auf der Basis rotierender Antennen |
| US6260759B1 (en) | 1998-08-11 | 2001-07-17 | Northrop Grumman Corporation | Method for tracking a target having substantially constrained movement |
| CA2507636C (en) * | 2003-02-03 | 2012-04-03 | Telefonaktiebolaget Lm Ericsson (Publ) | A method for controlling a radar antenna |
| US7151483B2 (en) * | 2004-05-03 | 2006-12-19 | Raytheon Company | System and method for concurrent operation of multiple radar or active sonar systems on a common frequency |
| GB201204792D0 (en) * | 2012-03-19 | 2012-05-02 | Qinetiq Ltd | Detection techniques |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3046547A (en) * | 1956-11-23 | 1962-07-24 | Hughes Aircraft Co | Two-pulse mti radar system |
| US3786509A (en) * | 1962-11-21 | 1974-01-15 | Gen Electric | Automatic canceller |
| US3383686A (en) * | 1967-01-30 | 1968-05-14 | Navy Usa | Diverse frequency echo detection system with doppler frequency coherence |
| US4155088A (en) * | 1967-02-20 | 1979-05-15 | Westinghouse Electric Corp. | Dual frequency transmission apparatus for frequency-agile radar systems utilizing MTI techniques |
| US3725926A (en) * | 1969-03-11 | 1973-04-03 | Us Air Force | Frequency diversified radar system |
| US3883871A (en) * | 1973-03-12 | 1975-05-13 | Randolph G Moore | Method and modulation system for ambiguity reduction in pulsed radar |
| DE2434732A1 (de) * | 1974-07-19 | 1976-01-29 | Westinghouse Electric Corp | Impuls-dopplerradarsystem |
| US3991417A (en) * | 1975-05-01 | 1976-11-09 | International Telephone And Telegraph Corporation | MTI canceller utilizing fiber optic delay medium and frequency reiteration |
| US4117538A (en) * | 1977-05-04 | 1978-09-26 | Raytheon Company | Radar system with specialized weighting |
| GB1604645A (en) * | 1977-08-02 | 1981-12-09 | Marconi Co Ltd | Radar systems |
-
1979
- 1979-04-25 SE SE7903654A patent/SE417138B/sv not_active IP Right Cessation
-
1980
- 1980-04-23 CH CH9489/80A patent/CH651937A5/de not_active IP Right Cessation
- 1980-04-23 NL NLAANVRAGE8020159,A patent/NL189625C/xx not_active IP Right Cessation
- 1980-04-23 JP JP55500983A patent/JPH0131154B2/ja not_active Expired
- 1980-04-23 GB GB8113280A patent/GB2072989B/en not_active Expired
- 1980-04-23 DE DE803041459A patent/DE3041459A1/de active Granted
- 1980-04-23 US US06/227,083 patent/US4385298A/en not_active Expired - Fee Related
- 1980-04-23 WO PCT/SE1980/000123 patent/WO1980002327A1/en active Application Filing
- 1980-04-24 IT IT21627/80A patent/IT1148797B/it active
- 1980-04-24 FR FR8009238A patent/FR2455289A1/fr active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| DE3041459C2 (sv) | 1989-09-07 |
| JPS56500427A (sv) | 1981-04-02 |
| CH651937A5 (de) | 1985-10-15 |
| GB2072989A (en) | 1981-10-07 |
| US4385298A (en) | 1983-05-24 |
| FR2455289B1 (sv) | 1984-06-29 |
| SE417138B (sv) | 1981-02-23 |
| GB2072989B (en) | 1983-06-02 |
| WO1980002327A1 (en) | 1980-10-30 |
| JPH0131154B2 (sv) | 1989-06-23 |
| NL189625C (nl) | 1993-06-01 |
| NL189625B (nl) | 1993-01-04 |
| IT1148797B (it) | 1986-12-03 |
| IT8021627A0 (it) | 1980-04-24 |
| FR2455289A1 (fr) | 1980-11-21 |
| DE3041459A1 (en) | 1982-02-18 |
| NL8020159A (nl) | 1981-08-03 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| NAL | Patent in force |
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| NUG | Patent has lapsed |
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