GB2020136A - System for locating a moving object - Google Patents

System for locating a moving object

Info

Publication number
GB2020136A
GB2020136A GB7912621A GB7912621A GB2020136A GB 2020136 A GB2020136 A GB 2020136A GB 7912621 A GB7912621 A GB 7912621A GB 7912621 A GB7912621 A GB 7912621A GB 2020136 A GB2020136 A GB 2020136A
Authority
GB
United Kingdom
Prior art keywords
omega
signals
moving object
locating
lines
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.)
Granted
Application number
GB7912621A
Other versions
GB2020136B (en
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.)
Centre National dEtudes Spatiales CNES
Original Assignee
Centre National dEtudes Spatiales CNES
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 Centre National dEtudes Spatiales CNES filed Critical Centre National dEtudes Spatiales CNES
Publication of GB2020136A publication Critical patent/GB2020136A/en
Application granted granted Critical
Publication of GB2020136B publication Critical patent/GB2020136B/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
    • 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
    • G01S1/20—Systems for determining direction or position line using a comparison of transit time of synchronised signals transmitted from non-directional antennas or antenna systems spaced apart, i.e. path-difference systems
    • G01S1/30—Systems for determining direction or position line using a comparison of transit time of synchronised signals transmitted from non-directional antennas or antenna systems spaced apart, i.e. path-difference systems the synchronised signals being continuous waves or intermittent trains of continuous waves, the intermittency not being for the purpose of determining direction or position line and the transit times being compared by measuring the phase difference
    • G01S1/308—Systems for determining direction or position line using a comparison of transit time of synchronised signals transmitted from non-directional antennas or antenna systems spaced apart, i.e. path-difference systems the synchronised signals being continuous waves or intermittent trains of continuous waves, the intermittency not being for the purpose of determining direction or position line and the transit times being compared by measuring the phase difference particularly adapted to Omega systems
    • 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
    • G01S3/00—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received
    • G01S3/02—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received using radio waves
    • G01S3/14—Systems for determining direction or deviation from predetermined direction
    • G01S3/46—Systems for determining direction or deviation from predetermined direction using antennas spaced apart and measuring phase or time difference between signals therefrom, i.e. path-difference systems
    • G01S3/48—Systems for determining direction or deviation from predetermined direction using antennas spaced apart and measuring phase or time difference between signals therefrom, i.e. path-difference systems the waves arriving at the antennas being continuous or intermittent and the phase difference of signals derived therefrom being measured
    • 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
    • G01S5/10—Position of receiver fixed by co-ordinating a plurality of position lines defined by path-difference measurements, e.g. omega or decca systems

Abstract

A system for locating a moving object by means of OMEGA signals with two specific OMEGA frequencies, for example 10.2 and 13.6 kHz, wherein it comprises on board the moving object (6), a responder constituted by a receiving antenna for the OMEGA signals, a circuit (12) for matching to the impedance of the antenna and for preamplifying the signals, two lines in parallel for amplifying, filtering and clipping the signals, each line working on a specific OMEGA frequency, a telemetry transmitter (14) with a plurality of frequency multiplexed channels, two of these channels comprising respectively the two said OMEGA frequencies and being connected to the said two lines, and on the ground a telemetry receiver (16) followed by an OMEGA signal receiver (18). <IMAGE>
GB7912621A 1978-04-17 1979-04-10 System for locating a moving object Expired GB2020136B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7811213A FR2423792A1 (en) 1978-04-17 1978-04-17 OMEGA SIGNAL FORMING CIRCUIT, ANSWERING MACHINE USING SUCH A CIRCUIT AND MOBILE LOCATION SYSTEM IMPLEMENTING THIS ANSWERING MACHINE

Publications (2)

Publication Number Publication Date
GB2020136A true GB2020136A (en) 1979-11-07
GB2020136B GB2020136B (en) 1982-07-28

Family

ID=9207201

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7912621A Expired GB2020136B (en) 1978-04-17 1979-04-10 System for locating a moving object

Country Status (3)

Country Link
DE (1) DE2915517A1 (en)
FR (1) FR2423792A1 (en)
GB (1) GB2020136B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5486835A (en) * 1994-10-31 1996-01-23 University Corporation For Atmospheric Research Low cost telemetry receiving system

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3950752A (en) * 1973-06-01 1976-04-13 Epsco, Incorporated Navigation receiver system for synchronizing to noisy, asymmetrical signals
US3896443A (en) * 1973-06-01 1975-07-22 Harold P Zitzow Omega navigation receiver station pair selection and lop display system

Also Published As

Publication number Publication date
FR2423792B1 (en) 1982-12-17
DE2915517A1 (en) 1979-10-31
FR2423792A1 (en) 1979-11-16
GB2020136B (en) 1982-07-28

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19930410