GB1268620A - A method of detecting a helicopter over the sea - Google Patents

A method of detecting a helicopter over the sea

Info

Publication number
GB1268620A
GB1268620A GB4130170A GB4130170A GB1268620A GB 1268620 A GB1268620 A GB 1268620A GB 4130170 A GB4130170 A GB 4130170A GB 4130170 A GB4130170 A GB 4130170A GB 1268620 A GB1268620 A GB 1268620A
Authority
GB
United Kingdom
Prior art keywords
sea
detecting
helicopter
radar
helicopter over
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.)
Expired
Application number
GB4130170A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dornier System GmbH
Original Assignee
Dornier System GmbH
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 Dornier System GmbH filed Critical Dornier System GmbH
Publication of GB1268620A publication Critical patent/GB1268620A/en
Expired legal-status Critical Current

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
    • G01S13/536—Discriminating between fixed and moving objects or between objects moving at different speeds using transmission of continuous unmodulated waves, amplitude-, frequency-, or phase-modulated waves

Abstract

1,268,620. Radar. DORNIER SYSTEM G.m.b.H. 27 Aug., 1970 [14 Nov., 1969], No. 41301/70. Heading H4D. In the radar detection of a helicopter just above the waves, the Doppler shift due to helicopter rotor blades motion is filtered out in the radar receiver.
GB4130170A 1969-11-14 1970-08-27 A method of detecting a helicopter over the sea Expired GB1268620A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19691957348 DE1957348A1 (en) 1969-11-14 1969-11-14 Process for suppressing the electromagnetic interference echoes reflected by the swell in helicopters flying over sea

Publications (1)

Publication Number Publication Date
GB1268620A true GB1268620A (en) 1972-03-29

Family

ID=5751122

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4130170A Expired GB1268620A (en) 1969-11-14 1970-08-27 A method of detecting a helicopter over the sea

Country Status (3)

Country Link
DE (1) DE1957348A1 (en)
FR (1) FR2067315A1 (en)
GB (1) GB1268620A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2461962A1 (en) * 1979-07-18 1981-02-06 Siemens Ag METHOD FOR CLASSIFYING MOBILE TARGETS
GB2126039A (en) * 1982-08-20 1984-03-14 Hans Spies MTI Radar or lidar
GB2179519A (en) * 1977-09-16 1987-03-04 Zeiss Stiftung Detecting helicopters
GB2250153A (en) * 1984-09-24 1992-05-27 Siemens Ag Discovering hovering helicopters
GB2322986A (en) * 1987-10-28 1998-09-09 Licentia Gmbh Target classification in radar systems
CN102540163A (en) * 2011-12-12 2012-07-04 中国船舶重工集团公司第七二四研究所 Helicopter classifying and identifying method based on conventional coherent radar
CN104133211A (en) * 2014-07-07 2014-11-05 中国船舶重工集团公司第七二四研究所 Target classification identification method for Doppler frequency transformation radar

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2463938B1 (en) * 1979-08-23 1985-07-26 Labo Cent Telecommunicat RADAR DOPPLER TO DETECT AND LOCATE HELICOPTERS
DE3233327C2 (en) * 1982-09-08 1986-04-17 Siemens AG, 1000 Berlin und 8000 München Circuit arrangement for the discovery and detection of helicopters

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2179519A (en) * 1977-09-16 1987-03-04 Zeiss Stiftung Detecting helicopters
FR2588967A1 (en) * 1977-09-16 1987-04-24 Zeiss Carl Fa METHOD AND DEVICE FOR DETECTING HELICOPTERS
US4842247A (en) * 1977-09-16 1989-06-27 Carl-Zeiss-Stiftung, Heidenheim/Brenz Method and apparatus for the detection of helicopters
FR2461962A1 (en) * 1979-07-18 1981-02-06 Siemens Ag METHOD FOR CLASSIFYING MOBILE TARGETS
GB2126039A (en) * 1982-08-20 1984-03-14 Hans Spies MTI Radar or lidar
GB2250153A (en) * 1984-09-24 1992-05-27 Siemens Ag Discovering hovering helicopters
GB2250153B (en) * 1984-09-24 1992-10-14 Siemens Ag Methods of and systems for discovering hovering helicopters
GB2322986A (en) * 1987-10-28 1998-09-09 Licentia Gmbh Target classification in radar systems
GB2322986B (en) * 1987-10-28 1998-12-16 Licentia Gmbh Method of type classification of a target
US6573861B1 (en) 1987-10-28 2003-06-03 Telefunken Systemtechnik Gmbh Target classification method
CN102540163A (en) * 2011-12-12 2012-07-04 中国船舶重工集团公司第七二四研究所 Helicopter classifying and identifying method based on conventional coherent radar
CN104133211A (en) * 2014-07-07 2014-11-05 中国船舶重工集团公司第七二四研究所 Target classification identification method for Doppler frequency transformation radar

Also Published As

Publication number Publication date
DE1957348A1 (en) 1971-05-19
FR2067315A1 (en) 1971-08-20

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