GB959330A - Improvements relating to pulse modulated radar equipment - Google Patents

Improvements relating to pulse modulated radar equipment

Info

Publication number
GB959330A
GB959330A GB3024861A GB3024861A GB959330A GB 959330 A GB959330 A GB 959330A GB 3024861 A GB3024861 A GB 3024861A GB 3024861 A GB3024861 A GB 3024861A GB 959330 A GB959330 A GB 959330A
Authority
GB
United Kingdom
Prior art keywords
frequencies
signals
frequency
polarized
outputs
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
GB3024861A
Inventor
Laurenceau Bernard Daniel
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.)
Compagnie Francaise Thomson Houston SA
Original Assignee
Compagnie Francaise Thomson Houston SA
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
Priority to FR830255A priority Critical patent/FR1267952A/en
Application filed by Compagnie Francaise Thomson Houston SA filed Critical Compagnie Francaise Thomson Houston SA
Priority to GB3024861A priority patent/GB959330A/en
Publication of GB959330A publication Critical patent/GB959330A/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

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

959,330. Pulse radar. COMPAGNIE FRANCAISE THOMSON-HOUSTON. Aug. 22, 1961, No. 30248/61. Heading H4D. Radar apparatus comprises means arranged to radiate simultaneously plane-polarized pulse signals on two different carrier frequencies, means to receive echo signals on both frequencies and having the polarization of the radiated signals, means to receive echo signals on both frequencies but with orthogonal polarization to the respective radiated signals, and means combining the echo signals to form a resultant signal. Moving targets are thereby rendered more clearly distinguishable from unwanted targets such as sea clutter. In one embodiment, Fig. 1, horizontally-polarized waves are radiated on a frequency F 1 and vertically-polarized waves on a frequency F 2 , and horizontally- and vertically-polarized echoes on both frequencies are received. Coherent detection receivers 10 ... 13 are included and their video-frequency outputs are multiplied as indicated by units 16, 17, the outputs from which are added in unit 18 which feeds a known fixed-target-eliminating device. In a second embodiment both transmissions are verticallypolarized, Fig. 2 (not shown); receiver outputs are added before ensuing multiplication.
GB3024861A 1960-06-17 1961-08-22 Improvements relating to pulse modulated radar equipment Expired GB959330A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR830255A FR1267952A (en) 1960-06-17 1960-06-17 Improvements to radiodetection systems
GB3024861A GB959330A (en) 1961-08-22 1961-08-22 Improvements relating to pulse modulated radar equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3024861A GB959330A (en) 1961-08-22 1961-08-22 Improvements relating to pulse modulated radar equipment

Publications (1)

Publication Number Publication Date
GB959330A true GB959330A (en) 1964-05-27

Family

ID=10304635

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3024861A Expired GB959330A (en) 1960-06-17 1961-08-22 Improvements relating to pulse modulated radar equipment

Country Status (1)

Country Link
GB (1) GB959330A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE28302E (en) * 1972-06-30 1975-01-14 Harmonic radar detecting and ranging system for automotive vehicles

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE28302E (en) * 1972-06-30 1975-01-14 Harmonic radar detecting and ranging system for automotive vehicles

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