FR1311270A - Perfectionnements aux radars à dispositif réflecteur - Google Patents

Perfectionnements aux radars à dispositif réflecteur

Info

Publication number
FR1311270A
FR1311270A FR41949A FR69041949A FR1311270A FR 1311270 A FR1311270 A FR 1311270A FR 41949 A FR41949 A FR 41949A FR 69041949 A FR69041949 A FR 69041949A FR 1311270 A FR1311270 A FR 1311270A
Authority
FR
France
Prior art keywords
radars
reflector
reflector radars
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
FR41949A
Other languages
English (en)
Inventor
John P Chisholm
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.)
Sierra Research Corp
Original Assignee
Sierra Research 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
Priority claimed from US66547A external-priority patent/US3108275A/en
Application filed by Sierra Research Corp filed Critical Sierra Research Corp
Priority to FR41949A priority Critical patent/FR1311270A/fr
Application granted granted Critical
Publication of FR1311270A publication Critical patent/FR1311270A/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
    • H01Q3/44—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the electric or magnetic characteristics of reflecting, refracting, or diffracting devices associated with the radiating element
    • 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
    • G01S13/74—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems
    • G01S13/75—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems using transponders powered from received waves, e.g. using passive transponders, or using passive reflectors
    • G01S13/751—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems using transponders powered from received waves, e.g. using passive transponders, or using passive reflectors wherein the responder or reflector radiates a coded signal
    • G01S13/756—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems using transponders powered from received waves, e.g. using passive transponders, or using passive reflectors wherein the responder or reflector radiates a coded signal using a signal generator for modifying the reflectivity of the reflector
    • 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
    • G01S13/74—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems
    • G01S13/76—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems wherein pulse-type signals are transmitted
    • G01S13/78—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems wherein pulse-type signals are transmitted discriminating between different kinds of targets, e.g. IFF-radar, i.e. identification of friend or foe

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR41949A 1960-11-01 1961-10-18 Perfectionnements aux radars à dispositif réflecteur Expired FR1311270A (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR41949A FR1311270A (fr) 1960-11-01 1961-10-18 Perfectionnements aux radars à dispositif réflecteur

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US66547A US3108275A (en) 1960-11-01 1960-11-01 Frequency shift reflection system
FR41949A FR1311270A (fr) 1960-11-01 1961-10-18 Perfectionnements aux radars à dispositif réflecteur

Publications (1)

Publication Number Publication Date
FR1311270A true FR1311270A (fr) 1962-12-07

Family

ID=26167728

Family Applications (1)

Application Number Title Priority Date Filing Date
FR41949A Expired FR1311270A (fr) 1960-11-01 1961-10-18 Perfectionnements aux radars à dispositif réflecteur

Country Status (1)

Country Link
FR (1) FR1311270A (fr)

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