ZA927285B - Apparatus for the observation and identification of helicopters. - Google Patents

Apparatus for the observation and identification of helicopters.

Info

Publication number
ZA927285B
ZA927285B ZA927285A ZA927285A ZA927285B ZA 927285 B ZA927285 B ZA 927285B ZA 927285 A ZA927285 A ZA 927285A ZA 927285 A ZA927285 A ZA 927285A ZA 927285 B ZA927285 B ZA 927285B
Authority
ZA
South Africa
Prior art keywords
helicopters
observation
identification
Prior art date
Application number
ZA927285A
Other languages
English (en)
Inventor
Grange Richard Eduardus Mar La
Willem Andries Hol
Original Assignee
Hollandse Signaalapparaten Bv
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hollandse Signaalapparaten Bv filed Critical Hollandse Signaalapparaten Bv
Publication of ZA927285B publication Critical patent/ZA927285B/xx

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
    • G01S13/5246—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
    • G01S13/06—Systems determining position data of a target
    • G01S13/08—Systems for measuring distance only
    • G01S13/32—Systems for measuring distance only using transmission of continuous waves, whether amplitude-, frequency-, or phase-modulated, or unmodulated
    • G01S13/34—Systems for measuring distance only using transmission of continuous waves, whether amplitude-, frequency-, or phase-modulated, or unmodulated using transmission of continuous, frequency-modulated waves while heterodyning the received signal, or a signal derived therefrom, with a locally-generated signal related to the contemporaneously transmitted signal
    • G01S13/343—Systems for measuring distance only using transmission of continuous waves, whether amplitude-, frequency-, or phase-modulated, or unmodulated using transmission of continuous, frequency-modulated waves while heterodyning the received signal, or a signal derived therefrom, with a locally-generated signal related to the contemporaneously transmitted signal using sawtooth modulation
    • 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
    • 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

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)
ZA927285A 1991-10-16 1992-09-23 Apparatus for the observation and identification of helicopters. ZA927285B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL9101720A NL9101720A (nl) 1991-10-16 1991-10-16 Inrichting voor het waarnemen en determineren van helicopters.

Publications (1)

Publication Number Publication Date
ZA927285B true ZA927285B (en) 1993-03-25

Family

ID=19859810

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA927285A ZA927285B (en) 1991-10-16 1992-09-23 Apparatus for the observation and identification of helicopters.

Country Status (13)

Country Link
US (1) US5347282A (es)
EP (1) EP0537841B1 (es)
JP (1) JP3026688B2 (es)
CN (1) CN1072267A (es)
AR (1) AR246614A1 (es)
AU (1) AU656026B2 (es)
BR (1) BR9204000A (es)
CA (1) CA2080039A1 (es)
DE (1) DE69218334T2 (es)
ES (1) ES2100271T3 (es)
NL (1) NL9101720A (es)
TR (1) TR26133A (es)
ZA (1) ZA927285B (es)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4242700C2 (de) * 1992-12-17 2003-01-30 Bosch Gmbh Robert Verfahren zur Messung des Abstandes und der Geschwindigkeit von Objekten
GB2517659B (en) * 1993-06-23 2015-07-22 Dassault Electronique Radar for helicopters
FR2718250B1 (fr) * 1994-03-31 1996-06-07 Setid Procédé de sondage d'un canal.
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
JP3710986B2 (ja) * 2000-03-17 2005-10-26 株式会社東芝 ヘリコプタ検出装置とこの装置を用いた誘導飛翔体
EP1712931A1 (en) * 2005-04-14 2006-10-18 Qinetiq Limited Method and apparatus for detecting a target in a scene
EP1731921A1 (en) * 2005-06-01 2006-12-13 Nederlandse Organisatie voor toegepast-natuurwetenschappelijk onderzoek TNO Radar system for aircraft
US7522089B2 (en) * 2006-06-12 2009-04-21 Raytheon Company Airborne look-down doppler radar tracking of hovering helicopters using rotor features
JP5627164B2 (ja) * 2007-04-17 2014-11-19 三菱電機株式会社 目標類別装置
EP2293100B1 (en) * 2009-08-31 2012-01-25 Thales Nederland B.V. A surveillance system for detecting targets with high cross-range resolution between targets
CN102540163A (zh) * 2011-12-12 2012-07-04 中国船舶重工集团公司第七二四研究所 一种基于常规相参雷达的直升机分类识别方法
US9306718B2 (en) * 2013-08-01 2016-04-05 Honeywell International Inc. System and method for mitigating helicopter rotor blockage of communications systems
CN104133211B (zh) * 2014-07-07 2016-08-24 中国船舶重工集团公司第七二四研究所 一种多普勒频率变换雷达目标分类识别方法
GB201609640D0 (en) 2016-06-02 2016-07-20 Qinetiq Ltd Radar system for the detection of drones
JP6937600B2 (ja) * 2017-04-07 2021-09-22 リオン株式会社 ドローン検出システム及びドローン検出方法
KR20200035560A (ko) 2018-09-27 2020-04-06 삼성전자주식회사 오브젝트 상태 결정 방법 및 그 방법을 수행하는 전자 장치
CN109975780B (zh) * 2019-04-17 2022-12-06 西安电子工程研究所 基于脉冲多普勒雷达时域回波的直升机型号识别算法
RU2728278C1 (ru) * 2019-12-23 2020-07-29 Федеральное государственное казённое военное образовательное учреждение высшего образования "Военная академия воздушно-космической обороны имени Маршала Советского Союза Г.К. Жукова" Министерства обороны Российской Федерации Способ сопровождения вертолета в импульсно-доплеровской радиолокационной станции
KR102461930B1 (ko) * 2020-11-11 2022-10-31 국방과학연구소 무기체계 도플러 신호 모사 장치 및 그 방법

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4490718A (en) * 1975-11-06 1984-12-25 Lockheed Electronics Co., Inc. Radar apparatus for detecting and/or classifying an agitated reflective target
DE2928907A1 (de) * 1979-07-18 1981-06-19 Siemens AG, 1000 Berlin und 8000 München Verfahren zur klassifizierung bewegter ziele
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
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
US4670753A (en) * 1984-10-01 1987-06-02 The Boeing Company Method and apparatus for minimum amplitude time history analysis
DE3740141A1 (de) * 1987-11-26 1989-06-08 Siemens Ag Radarverfahren zur klassifizierung von hubschraubern
FR2654838B1 (fr) * 1989-11-17 1992-06-19 Thomson Csf Radar doppler pour la detection et la localisation d'helicopteres.
FR2656108B1 (fr) * 1989-12-19 1993-02-05 Thomson Applic Radars Centre Procede et systeme radar coherent a impulsions pour la detection d'unhe cible presentant des eclairs de tres courte duree.
EP0443243A3 (en) * 1989-12-21 1992-09-23 Siemens Plessey Electronic Systems Limited Pulse doppler radar system

Also Published As

Publication number Publication date
DE69218334D1 (de) 1997-04-24
BR9204000A (pt) 1993-05-04
DE69218334T2 (de) 1997-10-09
TR26133A (tr) 1995-02-15
CN1072267A (zh) 1993-05-19
CA2080039A1 (en) 1993-04-17
EP0537841A1 (en) 1993-04-21
NL9101720A (nl) 1993-05-17
AR246614A1 (es) 1994-08-31
AU656026B2 (en) 1995-01-19
EP0537841B1 (en) 1997-03-19
US5347282A (en) 1994-09-13
JPH05215843A (ja) 1993-08-27
JP3026688B2 (ja) 2000-03-27
ES2100271T3 (es) 1997-06-16
AU2605392A (en) 1993-04-22

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