SE8702884D0 - Radar - Google Patents
RadarInfo
- Publication number
- SE8702884D0 SE8702884D0 SE8702884A SE8702884A SE8702884D0 SE 8702884 D0 SE8702884 D0 SE 8702884D0 SE 8702884 A SE8702884 A SE 8702884A SE 8702884 A SE8702884 A SE 8702884A SE 8702884 D0 SE8702884 D0 SE 8702884D0
- Authority
- SE
- Sweden
- Prior art keywords
- signals
- filter
- doppler
- receiver
- receives
- 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
- 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
- G01S7/41—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00 using analysis of echo signal for target characterisation; Target signature; Target cross-section
- G01S7/415—Identification of targets based on measurements of movement associated with the target
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Radar Systems Or Details Thereof (AREA)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US06/811,599 US5376940A (en) | 1985-12-19 | 1985-12-19 | Helicopter recognition radar processor |
DE3723265A DE3723265C1 (de) | 1985-12-19 | 1987-07-14 | Vorrichtung und Verfahren zur Radarerkennung von Hubschraubern |
CA002104441A CA2104441C (en) | 1985-12-19 | 1993-08-19 | Helicopter recognition radar processor |
Publications (1)
Publication Number | Publication Date |
---|---|
SE8702884D0 true SE8702884D0 (sv) | 1987-07-16 |
Family
ID=28678473
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE8702884A SE8702884D0 (sv) | 1985-12-19 | 1987-07-16 | Radar |
Country Status (4)
Country | Link |
---|---|
US (1) | US5376940A (sv) |
CA (1) | CA2104441C (sv) |
DE (1) | DE3723265C1 (sv) |
SE (1) | SE8702884D0 (sv) |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7079072B1 (en) * | 1987-01-23 | 2006-07-18 | Raytheon Company | Helicopter recognition radar processor |
US6894639B1 (en) * | 1991-12-18 | 2005-05-17 | Raytheon Company | Generalized hebbian learning for principal component analysis and automatic target recognition, systems and method |
US5465095A (en) * | 1994-08-05 | 1995-11-07 | The United States Of America As Represented By The Secretary Of The Air Force | Time efficient method for processing adaptive target detection thresholds in doppler radar systems |
US5689268A (en) * | 1996-08-02 | 1997-11-18 | Boeing North American, Inc. | Radar detection and classification of helicopters |
SE515481C2 (sv) * | 1999-12-14 | 2001-08-13 | Ericsson Telefon Ab L M | Förfarande vid mätning av radarmålarea hos ett mätföremål med både rörliga och fasta delar |
US6445342B1 (en) * | 2000-06-30 | 2002-09-03 | Motorola, Inc. | Method and device for multi-user frequency-domain channel estimation |
NL1020763C2 (nl) * | 2002-06-05 | 2003-12-08 | Thales Nederland Bv | Werkwijze en -systeem voor het deconvolueren van een met een onregelmatige PRT bemonsterd signaal, en de toepassingsmogelijkheden ervan. |
US7002509B2 (en) * | 2003-02-24 | 2006-02-21 | Networkfab Corporation | Method and system for emitter identification using transmission signatures |
US6801152B1 (en) * | 2003-04-21 | 2004-10-05 | Northrop Grumman Corporation | Method for determining the optimum observer heading change in bearings-only passive emitter tracking |
US7821870B2 (en) * | 2005-08-19 | 2010-10-26 | Mitsubishi Electric Research Laboratories Inc. | Method and system for identifying moving objects using acoustic signals |
US7522089B2 (en) * | 2006-06-12 | 2009-04-21 | Raytheon Company | Airborne look-down doppler radar tracking of hovering helicopters using rotor features |
US7817082B2 (en) * | 2007-03-11 | 2010-10-19 | Vawd Applied Science And Technology Corporation | Multi frequency spectral imaging radar system and method of target classification |
US8816899B2 (en) * | 2012-01-26 | 2014-08-26 | Raytheon Company | Enhanced target detection using dispersive vs non-dispersive scatterer signal processing |
US9568591B2 (en) * | 2014-11-10 | 2017-02-14 | Peter Dan Morley | Method for search radar processing using random matrix theory |
CN106719589A (zh) * | 2016-11-29 | 2017-05-31 | 歌尔科技有限公司 | 一种自动驱蚊装置及方法 |
GB2586608B (en) * | 2019-08-28 | 2023-07-19 | Bae Systems Plc | Active modulating element detection |
WO2021038191A1 (en) | 2019-08-28 | 2021-03-04 | Bae Systems Plc | Detection of modulating elements |
EP4030193A1 (en) * | 2021-01-13 | 2022-07-20 | HENSOLDT Sensors GmbH | Apparatus and method for identifying helicopter in radar signals |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3898654A (en) * | 1966-10-26 | 1975-08-05 | Rockwell International Corp | Amti radar system |
US3798642A (en) * | 1972-09-27 | 1974-03-19 | Microlab Fxr | Recognition system |
US4038656A (en) * | 1974-03-27 | 1977-07-26 | The United States Of America As Represented By The Secretary Of The Air Force | Helicopter discrimination apparatus for the murine radar |
US3983558A (en) * | 1974-06-28 | 1976-09-28 | The United States Of America As Represented By The Secretary Of The Army | Moving target indicating (MTI) radar systems employing vehicle discriminator apparatus |
FR2630221B1 (fr) * | 1978-03-14 | 1991-01-25 | Thomson Csf | Dispositif d'analyse spectrale et station receptrice d'interception automatique comportant un tel dispositif |
US4217585A (en) * | 1978-11-09 | 1980-08-12 | The United States Of America As Represented By The Secretary Of The Army | Dual frequency Doppler radar |
US4233605A (en) * | 1979-02-15 | 1980-11-11 | Northrop Corporation | Helicopter radar decoy |
DE2928907A1 (de) * | 1979-07-18 | 1981-06-19 | Siemens AG, 1000 Berlin und 8000 München | Verfahren zur klassifizierung bewegter ziele |
FR2463938B1 (fr) * | 1979-08-23 | 1985-07-26 | Labo Cent Telecommunicat | Radar doppler pour detecter et localiser les helicopteres |
US4275396A (en) * | 1979-10-12 | 1981-06-23 | Jacomini Omar J | Helicopter rotating blade detection system |
DE3002148A1 (de) * | 1980-01-22 | 1981-10-15 | Siemens AG, 1000 Berlin und 8000 München | Verfahren zur klassifizierung bewegter ziele |
US4370654A (en) * | 1980-01-25 | 1983-01-25 | Krutsch Thomas E | Apparatus for producing a frequency change of a wage propagating signal |
US4389647A (en) * | 1980-12-22 | 1983-06-21 | The United States Of America As Represented By The Secretary Of The Army | Doppler discrimination of aircraft targets |
US4483017A (en) * | 1981-07-31 | 1984-11-13 | Rca Corporation | Pattern recognition system using switched capacitors |
DE3233327C2 (de) * | 1982-09-08 | 1986-04-17 | Siemens AG, 1000 Berlin und 8000 München | Schaltungsanordnung zur Entdeckung und Erkennung von Hubschraubern |
US4555705A (en) * | 1982-11-19 | 1985-11-26 | International Standard Electric Corporation | System for providing a summarized information on the line spectrum from a Doppler radar spectrum analyzer |
-
1985
- 1985-12-19 US US06/811,599 patent/US5376940A/en not_active Expired - Lifetime
-
1987
- 1987-07-14 DE DE3723265A patent/DE3723265C1/de not_active Expired - Lifetime
- 1987-07-16 SE SE8702884A patent/SE8702884D0/sv unknown
-
1993
- 1993-08-19 CA CA002104441A patent/CA2104441C/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
CA2104441A1 (en) | 1995-02-20 |
DE3723265C1 (de) | 2003-07-10 |
CA2104441C (en) | 1996-08-06 |
US5376940A (en) | 1994-12-27 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
SE8702884D0 (sv) | Radar | |
EP0321877A3 (en) | Weather radar with turbulence detection | |
EP0535957A3 (en) | Noise correction in radars for diffuse targets | |
EP0382969A3 (en) | Range limiting system | |
GB1301299A (sv) | ||
ATE57023T1 (de) | Adaptiver digitaler mtd-prozessor fuer ein ueberwachungsradar mit einer doppler-filterbank und einem schwellenwertsystem, die beide anwaehlbar und stoerungsabhaengig sind. | |
GB1403484A (en) | Electronic proximity fuse | |
AU693035B2 (en) | A target persistence and environment filter | |
GB1368368A (en) | Terrainfollowing radar system | |
CA2026023A1 (en) | Bistatic radar seeker with range gating | |
GB1220321A (en) | Improvements to radio-detection methods | |
IE782574L (en) | Determining the velocity of acoustic waves in earth¹formations | |
SE8202659L (sv) | Radar | |
GB1268620A (en) | A method of detecting a helicopter over the sea | |
IE802591L (en) | Preventing a radar beacon from responding to radar pulses¹from the side lobes of a transmitter | |
GB1496472A (en) | Method and apparatus for the directional characteristic of an echo sounding receiver | |
JPS6447985A (en) | Cw radar system | |
JPS53124401A (en) | Control signal detection system for discrimination of presence or not of angle modulated wave signals | |
TUNNICLIFFE | An automatic tracking system based on the stationary plot filter(to extract clutter) | |
JPS5554482A (en) | Bistatic radar system | |
Shurupov | Increasing the accuracy and speed of search systems with variable-frequency sampling signals. | |
CA2089483A1 (en) | Method for the simultaneous determination of target range and speed using a radar system | |
JPS6472090A (en) | Radar equipment | |
JPS5779475A (en) | Radar device | |
JPS5772451A (en) | Frequency detection system |