GB596650A - Improvements in or relating to radar systems - Google Patents

Improvements in or relating to radar systems

Info

Publication number
GB596650A
GB596650A GB2445044A GB2445044A GB596650A GB 596650 A GB596650 A GB 596650A GB 2445044 A GB2445044 A GB 2445044A GB 2445044 A GB2445044 A GB 2445044A GB 596650 A GB596650 A GB 596650A
Authority
GB
United Kingdom
Prior art keywords
receiver
oscillator
produced
oscillations
radio frequency
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
GB2445044A
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.)
ARTHUR EARLE BAILEY
HAROLD GAUNT
WILLIAM SIDNEY ELLIOTT
Original Assignee
ARTHUR EARLE BAILEY
HAROLD GAUNT
WILLIAM SIDNEY ELLIOTT
Filing date
Publication date
Application filed by ARTHUR EARLE BAILEY, HAROLD GAUNT, WILLIAM SIDNEY ELLIOTT filed Critical ARTHUR EARLE BAILEY
Publication of GB596650A publication Critical patent/GB596650A/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
    • G01S13/522—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
    • 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
    • G01S7/288—Coherent receivers

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)

Abstract

596,650. Radiolocation. ELLIOTT, W. S., BAILEY, A. E., and GAUNT, H. Dec. 6, 1944, No. 24450. Drawings to Specification. [Class 40 (v)] In a pulse radar system for the detection of moving objects, Doppler beat frequencies are obtained by injecting into a mixing device, comprising the I.F. amplifier or second detector of the receiver, local reference oscillations which are produced by mixing oscillations from the receiver local oscillator with the output from an oscillator at R.F., which is coupled to the transmitter so as to be locked in phase with the radio frequency in successive transmitted pulses. The system described is identical with that described with reference to Figs. 1 and 2 of Specification 596,649. It is also stated that the receiver may employ multiple frequency changing, the continuous reference oscillation then being produced by similar frequency changing steps from the continuous radio frequency oscillator.
GB2445044A 1944-12-06 Improvements in or relating to radar systems Expired GB596650A (en)

Publications (1)

Publication Number Publication Date
GB596650A true GB596650A (en) 1948-01-08

Family

ID=1738366

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2445044A Expired GB596650A (en) 1944-12-06 Improvements in or relating to radar systems

Country Status (1)

Country Link
GB (1) GB596650A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE977263C (en) * 1954-12-18 1965-08-12 Ernst Dr Schulze Pulse Doppler frequency radar method
DE1220911B (en) * 1955-10-27 1966-07-14 Dr Ernst Schulze Pulse Doppler frequency radar method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE977263C (en) * 1954-12-18 1965-08-12 Ernst Dr Schulze Pulse Doppler frequency radar method
DE1220911B (en) * 1955-10-27 1966-07-14 Dr Ernst Schulze Pulse Doppler frequency radar method

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