GB1368621A - Method of determining distance between a location and a reflective electro magnetic discontinuity and a device for carrying out the method - Google Patents

Method of determining distance between a location and a reflective electro magnetic discontinuity and a device for carrying out the method

Info

Publication number
GB1368621A
GB1368621A GB3097771A GB3097771A GB1368621A GB 1368621 A GB1368621 A GB 1368621A GB 3097771 A GB3097771 A GB 3097771A GB 3097771 A GB3097771 A GB 3097771A GB 1368621 A GB1368621 A GB 1368621A
Authority
GB
United Kingdom
Prior art keywords
pulses
pulse
ramp
july
distance measurement
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
GB3097771A
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.)
Australia Department of Supply
Original Assignee
Australia Department of Supply
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 Australia Department of Supply filed Critical Australia Department of Supply
Publication of GB1368621A publication Critical patent/GB1368621A/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
    • G01S13/0209—Systems with very large relative bandwidth, i.e. larger than 10 %, e.g. baseband, pulse, carrier-free, ultrawideband
    • 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)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar Systems Or Details Thereof (AREA)

Abstract

1368621 Pulse radar AUSTRALIA COMMONWEALTH OF 1 July 1971 [3 July 1970] 30977/71 Heading H4D In a pulse radar utilizing emission of carrierless pulses the received echo pulses are amplified over a specified bandwidth and are further filtered after envelope detection before timeinterval measurement. In the embodiment, for an airborne radar altimeter, aerial 3 is stated to have a constant impedance and beamwidth over the band 75 to 375 mHz; aerials mentioned are a planar equiangular spiral and a sleeved unipole. 3nS D.C. pulses are produced by a step-recovery diode, Fig. 6 (not shown). Distance measurement utilizes a ramp generator started by the transmitted pulse, a sampling circuit 8 holds the voltage reached by the ramp when the leading edge of the echo pulse is received. To reduce fluctuations in the distance measurement reading an integrator 9 is employed. A range search and automatic ranging utilize a sampled ramp from generator 13.
GB3097771A 1970-07-03 1971-07-01 Method of determining distance between a location and a reflective electro magnetic discontinuity and a device for carrying out the method Expired GB1368621A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AU30750/71A AU463663B2 (en) 1970-07-03 1970-07-03 Radio altimeter

Publications (1)

Publication Number Publication Date
GB1368621A true GB1368621A (en) 1974-10-02

Family

ID=3718622

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3097771A Expired GB1368621A (en) 1970-07-03 1971-07-01 Method of determining distance between a location and a reflective electro magnetic discontinuity and a device for carrying out the method

Country Status (2)

Country Link
AU (1) AU463663B2 (en)
GB (1) GB1368621A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3367123A1 (en) * 2017-02-23 2018-08-29 Rosemount Aerospace Inc. Ultra-wideband radar altimeter
CN111868560A (en) * 2018-03-20 2020-10-30 帕诺森斯有限公司 LIDAR pulse detector selection depending on pulse type

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110988858B (en) * 2019-11-11 2021-12-07 西安空间无线电技术研究所 High-precision distance measurement method and system for dual-beam microwave landing radar

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3367123A1 (en) * 2017-02-23 2018-08-29 Rosemount Aerospace Inc. Ultra-wideband radar altimeter
US10371812B2 (en) 2017-02-23 2019-08-06 Rosemount Aerospace Inc. Ultra-wideband radar altimeter
CN111868560A (en) * 2018-03-20 2020-10-30 帕诺森斯有限公司 LIDAR pulse detector selection depending on pulse type
CN111868560B (en) * 2018-03-20 2024-05-07 祖克斯有限公司 Selecting LIDAR pulse detectors depending on pulse type

Also Published As

Publication number Publication date
AU3075071A (en) 1973-01-04
AU463663B2 (en) 1975-07-15

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees