FR2552884B1 - Systeme de radionavigation avec dispositifs pour accroitre le secret des informations de distance et/ou de gisement - Google Patents

Systeme de radionavigation avec dispositifs pour accroitre le secret des informations de distance et/ou de gisement

Info

Publication number
FR2552884B1
FR2552884B1 FR7704378A FR7704378A FR2552884B1 FR 2552884 B1 FR2552884 B1 FR 2552884B1 FR 7704378 A FR7704378 A FR 7704378A FR 7704378 A FR7704378 A FR 7704378A FR 2552884 B1 FR2552884 B1 FR 2552884B1
Authority
FR
France
Prior art keywords
secret
increasing
distance
devices
deposit information
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
FR7704378A
Other languages
English (en)
Other versions
FR2552884A1 (fr
Inventor
Jacques D Brisse
Jean-Pierre J Chevalier
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.)
Thales SA
Original Assignee
Le Materiel Telephonique Thomson CSF
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 Le Materiel Telephonique Thomson CSF filed Critical Le Materiel Telephonique Thomson CSF
Priority to FR7704378A priority Critical patent/FR2552884B1/fr
Priority to US05/879,271 priority patent/US4564840A/en
Priority to GB05905/78A priority patent/GB1605230A/en
Publication of FR2552884A1 publication Critical patent/FR2552884A1/fr
Application granted granted Critical
Publication of FR2552884B1 publication Critical patent/FR2552884B1/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
    • G01S1/00—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith
    • G01S1/02—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith using radio waves
    • G01S1/04—Details
    • 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
    • G01S1/00—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith
    • G01S1/02—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith using radio waves
    • G01S1/08—Systems for determining direction or position line
    • G01S1/44—Rotating or oscillating beam beacons defining directions in the plane of rotation or oscillation
    • G01S1/46—Broad-beam systems producing at a receiver a substantially continuous sinusoidal envelope signal of the carrier wave of the beam, the phase angle of which is dependent upon the angle between the direction of the receiver from the beacon and a reference direction from the beacon, e.g. cardioid system
    • 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
    • G01S13/785—Distance Measuring Equipment [DME] systems
    • G01S13/787—Distance Measuring Equipment [DME] systems co-operating with direction defining beacons
FR7704378A 1977-02-16 1977-02-16 Systeme de radionavigation avec dispositifs pour accroitre le secret des informations de distance et/ou de gisement Expired FR2552884B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FR7704378A FR2552884B1 (fr) 1977-02-16 1977-02-16 Systeme de radionavigation avec dispositifs pour accroitre le secret des informations de distance et/ou de gisement
US05/879,271 US4564840A (en) 1977-02-16 1978-02-13 Radionavigation system having means for concealing distance and/or bearing information conveyed thereby
GB05905/78A GB1605230A (en) 1977-02-16 1978-02-14 Radio navigation system and elements thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7704378A FR2552884B1 (fr) 1977-02-16 1977-02-16 Systeme de radionavigation avec dispositifs pour accroitre le secret des informations de distance et/ou de gisement

Publications (2)

Publication Number Publication Date
FR2552884A1 FR2552884A1 (fr) 1985-04-05
FR2552884B1 true FR2552884B1 (fr) 1988-05-13

Family

ID=9186821

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7704378A Expired FR2552884B1 (fr) 1977-02-16 1977-02-16 Systeme de radionavigation avec dispositifs pour accroitre le secret des informations de distance et/ou de gisement

Country Status (3)

Country Link
US (1) US4564840A (fr)
FR (1) FR2552884B1 (fr)
GB (1) GB1605230A (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5157408A (en) * 1990-05-25 1992-10-20 Navcom Defence Electronics, Inc. Low probability of interception relative position determination system
FR2730567B1 (fr) * 1995-02-14 1997-03-14 Thomson Csf Ensemble interrogateur pour systeme d'identification par radiodetection
US7181017B1 (en) 2001-03-23 2007-02-20 David Felsher System and method for secure three-party communications
US9818136B1 (en) 2003-02-05 2017-11-14 Steven M. Hoffberg System and method for determining contingent relevance
US8874477B2 (en) 2005-10-04 2014-10-28 Steven Mark Hoffberg Multifactorial optimization system and method
JP4664947B2 (ja) * 2007-07-02 2011-04-06 株式会社東芝 Ｄｍｅ地上装置
US9544047B2 (en) * 2013-05-01 2017-01-10 The Boeing Company System and method to prevent misuse of aircraft messages
WO2015131384A1 (fr) * 2014-03-07 2015-09-11 Honeywell International Inc. Systèmes et procédés de surveillance d'avion à haute fiabilité

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2796602A (en) * 1947-08-08 1957-06-18 Padevco Inc Aircraft identification and location system
GB912502A (en) * 1959-07-03 1962-12-12 Avel Corp Geneva Improvements in proximity warning devices
US3315262A (en) * 1964-05-18 1967-04-18 Itt Beacon identity display
US3921121A (en) * 1964-06-12 1975-11-18 Us Navy Selectable up or down doppler simulator
DE1929042C3 (de) * 1969-06-07 1974-01-31 Standard Elektrik Lorenz Ag, 7000 Stuttgart Verfahren und Einrichtung zur Berücksichtigung der Laufzeiten in der Antwortstation eines Impulsabfrage-Entfernungsmeßsystem
US3680117A (en) * 1969-06-26 1972-07-25 Int Standard Electric Corp Tacan method
US3900867A (en) * 1971-01-29 1975-08-19 Siemens Ag Interrogator-responsor system for different interrogator codes
US3818478A (en) * 1972-08-14 1974-06-18 Raytheon Co Coded navigation system

Also Published As

Publication number Publication date
US4564840A (en) 1986-01-14
FR2552884A1 (fr) 1985-04-05
GB1605230A (en) 1985-04-17

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Legal Events

Date Code Title Description
ST Notification of lapse