FR2178780B1 - - Google Patents

Info

Publication number
FR2178780B1
FR2178780B1 FR7212115A FR7212115A FR2178780B1 FR 2178780 B1 FR2178780 B1 FR 2178780B1 FR 7212115 A FR7212115 A FR 7212115A FR 7212115 A FR7212115 A FR 7212115A FR 2178780 B1 FR2178780 B1 FR 2178780B1
Authority
FR
France
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
FR7212115A
Other languages
French (fr)
Other versions
FR2178780A1 (zh
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.)
Etat Francais
Original Assignee
Etat Francais
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 Etat Francais filed Critical Etat Francais
Priority to FR7212115A priority Critical patent/FR2178780B1/fr
Priority to DE19732317473 priority patent/DE2317473A1/de
Publication of FR2178780A1 publication Critical patent/FR2178780A1/fr
Application granted granted Critical
Publication of FR2178780B1 publication Critical patent/FR2178780B1/fr
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
    • G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
    • G01S15/87—Combinations of sonar systems
    • G01S15/874—Combination of several spaced transponders or reflectors of known location for determining the position of a receiver
    • 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
    • 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
    • G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
    • G01S5/02—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
    • G01S5/14—Determining absolute distances from a plurality of spaced points of known location

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
FR7212115A 1972-04-06 1972-04-06 Expired FR2178780B1 (zh)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR7212115A FR2178780B1 (zh) 1972-04-06 1972-04-06
DE19732317473 DE2317473A1 (de) 1972-04-06 1973-04-06 Entfernungsmessverfahren und entfernungsmessanordnung zur ortsbestimmung

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7212115A FR2178780B1 (zh) 1972-04-06 1972-04-06

Publications (2)

Publication Number Publication Date
FR2178780A1 FR2178780A1 (zh) 1973-11-16
FR2178780B1 true FR2178780B1 (zh) 1974-12-06

Family

ID=9096435

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7212115A Expired FR2178780B1 (zh) 1972-04-06 1972-04-06

Country Status (2)

Country Link
DE (1) DE2317473A1 (zh)
FR (1) FR2178780B1 (zh)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2248517B1 (zh) * 1973-10-23 1978-08-04 Sercel Rech Const Elect
FR2631130B1 (fr) * 1988-05-06 1991-01-04 Geophysique Cie Gle Procede de radiolocalisation d'un objet mobile a partir d'un reseau de radionavigation et de balises intermediaires et systeme de radiolocalisation correspondant

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2821704A (en) * 1945-11-30 1958-01-28 Marcus D O'day Navigation system

Also Published As

Publication number Publication date
FR2178780A1 (zh) 1973-11-16
DE2317473A1 (de) 1973-10-18

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Legal Events

Date Code Title Description
ST Notification of lapse