GB1102332A - Digital method of passive and automatic bearing indication for accurate navigation - Google Patents

Digital method of passive and automatic bearing indication for accurate navigation

Info

Publication number
GB1102332A
GB1102332A GB2273365A GB2273365A GB1102332A GB 1102332 A GB1102332 A GB 1102332A GB 2273365 A GB2273365 A GB 2273365A GB 2273365 A GB2273365 A GB 2273365A GB 1102332 A GB1102332 A GB 1102332A
Authority
GB
United Kingdom
Prior art keywords
pulses
azimuth
pulse
narrow
train
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
GB2273365A
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.)
International Standard Electric Corp
Original Assignee
International Standard Electric 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
Application filed by International Standard Electric Corp filed Critical International Standard Electric Corp
Publication of GB1102332A publication Critical patent/GB1102332A/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
    • G01S13/74—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
    • G01S13/762—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems wherein pulse-type signals are transmitted with special measures concerning the radiation pattern, e.g. S.L.S.
    • 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

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

1,102,332. Radio navigation. INTERNATIONAL STANDARD ELECTRIC CORPORATION. 28 May, 1965 [4 June, 1964], No. 22733/65. Heading H4D. A radio beacon radiates a pulse-modulated train from an omni-directional aerial (" azimuth " pulses) and a pulse-modulated train from a narrow-beam aerial which is rotated in azimuth ("beam" " pulses), and a receiver counts the azimuth pulses, or locally-generated pulses locked thereto, from a reference datum in the azimuth pulses until the narrow beam is received. The azimuth and beam pulses may be on different carrier frequencies, or if on the same carrier frequency a slight time separation exists between them. The receiver, Figs. 3, 4 and 5 (none shown), incorporates (i) a threshold level for the beam pulses determined by the level of the azimuth pulses to thereby inhibit false operation from side lobes of the narrow beam, (ii) a local pulse generator controlled by the azimuth pulses to run in " flywheel " manner at the repetition rate thereof and thus allow for missing azimuth pulses, (iii) delay means for separating azimuth and beam pulses when on the same carrier frequency and for detecting the reference (" north ") pulse signal in the azimuth pulse train for starting the counter read-out, and (iv) logic circuits to stop transmission of the counter output at an instant corresponding to the centre of the narrow beam, the delay inherent in this process being compensated for. Two beacons may be provided for fixing purposes.
GB2273365A 1964-06-04 1965-05-28 Digital method of passive and automatic bearing indication for accurate navigation Expired GB1102332A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE677564 1964-06-04

Publications (1)

Publication Number Publication Date
GB1102332A true GB1102332A (en) 1968-02-07

Family

ID=20269576

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2273365A Expired GB1102332A (en) 1964-06-04 1965-05-28 Digital method of passive and automatic bearing indication for accurate navigation

Country Status (4)

Country Link
BE (1) BE664939A (en)
FR (1) FR1442643A (en)
GB (1) GB1102332A (en)
NL (1) NL6507119A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2309148A1 (en) * 1973-02-14 1974-08-29 Raytheon Co RADIO LOCATION SYSTEM, IN PARTICULAR INSTRUMENT LANDING SYSTEM

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2309148A1 (en) * 1973-02-14 1974-08-29 Raytheon Co RADIO LOCATION SYSTEM, IN PARTICULAR INSTRUMENT LANDING SYSTEM

Also Published As

Publication number Publication date
FR1442643A (en) 1966-06-17
NL6507119A (en) 1965-12-06
BE664939A (en) 1965-12-06

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