GB1330917A - Coherent pulse doppler altimeter - Google Patents

Coherent pulse doppler altimeter

Info

Publication number
GB1330917A
GB1330917A GB1689871A GB1689871A GB1330917A GB 1330917 A GB1330917 A GB 1330917A GB 1689871 A GB1689871 A GB 1689871A GB 1689871 A GB1689871 A GB 1689871A GB 1330917 A GB1330917 A GB 1330917A
Authority
GB
United Kingdom
Prior art keywords
oscillator
doppler
pulses
duty cycle
switch
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
GB1689871A
Other languages
English (en)
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.)
Hoffman Electronics Corp
Original Assignee
Hoffman Electronics Corp
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 Hoffman Electronics Corp filed Critical Hoffman Electronics Corp
Publication of GB1330917A publication Critical patent/GB1330917A/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
    • G01S13/66—Radar-tracking systems; Analogous systems
    • G01S13/70—Radar-tracking systems; Analogous systems for range tracking only
    • 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
    • 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
    • G01S13/18—Systems for measuring distance only using transmission of interrupted, pulse modulated waves wherein range gates are used
    • 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
    • G01S13/88—Radar or analogous systems specially adapted for specific applications
    • G01S13/882—Radar or analogous systems specially adapted for specific applications for altimeters

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)
GB1689871A 1971-02-03 1971-05-25 Coherent pulse doppler altimeter Expired GB1330917A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US11229571A 1971-02-03 1971-02-03

Publications (1)

Publication Number Publication Date
GB1330917A true GB1330917A (en) 1973-09-19

Family

ID=22343132

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1689871A Expired GB1330917A (en) 1971-02-03 1971-05-25 Coherent pulse doppler altimeter

Country Status (4)

Country Link
US (1) US3739379A (https=)
DE (1) DE2126917A1 (https=)
FR (1) FR2124208B1 (https=)
GB (1) GB1330917A (https=)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4320397A (en) * 1979-06-29 1982-03-16 Nasa Echo tracker/range finder for radars and sonars
US5047779A (en) * 1990-08-28 1991-09-10 Honeywell Inc. Aircraft radar altimeter with multiple target tracking capability
US5047778A (en) * 1990-10-11 1991-09-10 The Boeing Company FMCW radar range tracker and method
US5150125A (en) * 1990-12-24 1992-09-22 Honeywell Inc. High Doppler rate, high altitude capability coherent pulse Doppler radar altimeter
US5427380A (en) * 1994-10-19 1995-06-27 Interactive Innovations, Inc. Hand-held multi-function wireless target control system
US6426717B1 (en) 2001-05-11 2002-07-30 Rockwell Collins, Inc. Single antenna FM radio altimeter operating in a continuous wave mode and an interrupted continuous wave mode
US6639543B2 (en) * 2002-01-09 2003-10-28 Tyco Electronics Corp. Sensor front-end for vehicle closing velocity sensor
DE10314557A1 (de) * 2003-03-31 2004-10-28 Siemens Ag Kompakter Mikrowellen-Anstandsensor mit geringer Leistungsaufnahme durch Leistungsmessung an einem stimulierten Empfangsoszillator
DE102005057094B4 (de) * 2005-11-30 2013-02-14 Vega Grieshaber Kg Füllstandradar mit variabler Sendeleistung
US7463187B2 (en) * 2006-09-27 2008-12-09 Honeywell International Inc. Method and system of improving altimeter accuracy by use of a separate peak return signal tracking
US7800528B2 (en) * 2007-07-31 2010-09-21 Rosemount Tank Radar Ab Radar level gauge with variable pulse parameters
EP2051098A1 (en) * 2007-10-19 2009-04-22 Ford Global Technologies, LLC A method and system for presence detection
RU2412450C2 (ru) * 2008-03-11 2011-02-20 ОАО "Уральское проектно-конструкторское бюро "Деталь" Способ снижения нижней границы измерения малых высот до нуля и устройство когерентного импульсно-доплеровского радиовысотомера, реализующего способ
US8264377B2 (en) 2009-03-02 2012-09-11 Griffith Gregory M Aircraft collision avoidance system
US8259002B2 (en) 2010-12-10 2012-09-04 Honeywell International Inc. Radar altimeter antenna performance monitoring via reflected power measurements
US8264401B1 (en) * 2011-12-29 2012-09-11 Sensys Networks, Inc. Micro-radar, micro-radar sensor nodes, networks and systems
US9939524B2 (en) * 2015-02-04 2018-04-10 Honeywell International Inc. Systems and methods for measuring velocity with a radar altimeter
US10006991B2 (en) 2015-02-11 2018-06-26 Honeywell International Inc. Velocity and attitude estimation using an interferometric radar altimeter
US10641885B2 (en) 2017-07-21 2020-05-05 Honeywell International Inc. Systems and methods for measuring velocity and acceleration with a radar altimeter
US11682313B2 (en) 2021-03-17 2023-06-20 Gregory M. Griffith Sensor assembly for use in association with aircraft collision avoidance system and method of using the same

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2542983A (en) * 1941-12-19 1951-02-27 Int Standard Electric Corp Arrangement for determining distances by reflection of electrical pulses
US2946050A (en) * 1946-01-30 1960-07-19 Sperry Rand Corp Pulse radar object detection system
US2891942A (en) * 1955-07-13 1959-06-23 Saul & Co Water-insoluble monoazo dyestuffs
US2869119A (en) * 1955-09-27 1959-01-13 Gen Precision Lab Inc Pulse radar transmitter-receiver
US3147476A (en) * 1959-05-28 1964-09-01 Dynamics Corp America Long range radar ranging system
US3344421A (en) * 1966-02-25 1967-09-26 Jr Clell A Dildy Digitally controlled automatic range gate
US3469261A (en) * 1967-11-28 1969-09-23 Bendix Corp Pulse-radar distance-measuring system
US3631487A (en) * 1970-03-09 1971-12-28 Collins Radio Co Complementary search system for d.m.e.

Also Published As

Publication number Publication date
US3739379A (en) 1973-06-12
FR2124208A1 (https=) 1972-09-22
FR2124208B1 (https=) 1976-12-03
DE2126917A1 (de) 1972-08-24

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees