FR2305742A1 - Determining position of viewfinder in helicopter - involves ultrasonic transmissions passing to receivers on three fixed axes from viewfinder - Google Patents

Determining position of viewfinder in helicopter - involves ultrasonic transmissions passing to receivers on three fixed axes from viewfinder

Info

Publication number
FR2305742A1
FR2305742A1 FR7509399A FR7509399A FR2305742A1 FR 2305742 A1 FR2305742 A1 FR 2305742A1 FR 7509399 A FR7509399 A FR 7509399A FR 7509399 A FR7509399 A FR 7509399A FR 2305742 A1 FR2305742 A1 FR 2305742A1
Authority
FR
France
Prior art keywords
viewfinder
helicopter
receivers
determining position
fixed axes
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
FR7509399A
Other languages
French (fr)
Other versions
FR2305742B1 (en
Inventor
Noel Ferrier
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.)
REALISATIONS ELECTRONIQUE ET
Original Assignee
REALISATIONS ELECTRONIQUE ET
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 REALISATIONS ELECTRONIQUE ET filed Critical REALISATIONS ELECTRONIQUE ET
Priority to FR7509399A priority Critical patent/FR2305742A1/en
Publication of FR2305742A1 publication Critical patent/FR2305742A1/en
Application granted granted Critical
Publication of FR2305742B1 publication Critical patent/FR2305742B1/fr
Granted 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
    • G01S11/00—Systems for determining distance or velocity not using reflection or reradiation
    • G01S11/14—Systems for determining distance or velocity not using reflection or reradiation using ultrasonic, sonic, or infrasonic waves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41G—WEAPON SIGHTS; AIMING
    • F41G3/00—Aiming or laying means
    • F41G3/22—Aiming or laying means for vehicle-borne armament, e.g. on aircraft
    • F41G3/225—Helmet sighting systems

Abstract

A view finder used in helicopters gives the direction and altitude of a moving object relative to the helicopter, thus enabling aiming of weapons. alignment is performed using ultra sonic techniques to dispense with problems of mechanical methods. The position of a viewfinder inside a helicopter is found using an ultrasonic transmitter on the viewfinder and which radiates to three receivers located on reference axes. The transmitter is powered from an oscillator driving an amplifier and is amplitude modulated by chopping the output of a divider circuit. Received signals are amplified and shaped and passed to counters to determine delay periods using clock timing pulses.
FR7509399A 1975-03-26 1975-03-26 Determining position of viewfinder in helicopter - involves ultrasonic transmissions passing to receivers on three fixed axes from viewfinder Granted FR2305742A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7509399A FR2305742A1 (en) 1975-03-26 1975-03-26 Determining position of viewfinder in helicopter - involves ultrasonic transmissions passing to receivers on three fixed axes from viewfinder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7509399A FR2305742A1 (en) 1975-03-26 1975-03-26 Determining position of viewfinder in helicopter - involves ultrasonic transmissions passing to receivers on three fixed axes from viewfinder

Publications (2)

Publication Number Publication Date
FR2305742A1 true FR2305742A1 (en) 1976-10-22
FR2305742B1 FR2305742B1 (en) 1979-03-09

Family

ID=9153086

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7509399A Granted FR2305742A1 (en) 1975-03-26 1975-03-26 Determining position of viewfinder in helicopter - involves ultrasonic transmissions passing to receivers on three fixed axes from viewfinder

Country Status (1)

Country Link
FR (1) FR2305742A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2508651A1 (en) * 1981-06-30 1982-12-31 Tech Cie Indle Ultrasonic position measuring device - includes transmitter and three linked receivers comparing phase of sampled received signals
EP0152905A2 (en) * 1984-02-21 1985-08-28 Travenol GmbH Method and device for localizing measuring points using ultrasonic pulses
EP0202217A2 (en) * 1985-05-14 1986-11-20 Nippon Mining Co., Ltd. A stirrer for use in liquid storage tanks, and a method for determining its position in the tank

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2041006A1 (en) * 1969-04-24 1971-01-29 Realisation Ultrasonique
US3777305A (en) * 1972-04-10 1973-12-04 Us Navy Ultrasonic angle measurement system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2041006A1 (en) * 1969-04-24 1971-01-29 Realisation Ultrasonique
US3777305A (en) * 1972-04-10 1973-12-04 Us Navy Ultrasonic angle measurement system

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2508651A1 (en) * 1981-06-30 1982-12-31 Tech Cie Indle Ultrasonic position measuring device - includes transmitter and three linked receivers comparing phase of sampled received signals
EP0152905A2 (en) * 1984-02-21 1985-08-28 Travenol GmbH Method and device for localizing measuring points using ultrasonic pulses
EP0152905A3 (en) * 1984-02-21 1987-03-25 Travenol Gmbh Method and device for localizing a measuring point using ultrasonic pulses
EP0202217A2 (en) * 1985-05-14 1986-11-20 Nippon Mining Co., Ltd. A stirrer for use in liquid storage tanks, and a method for determining its position in the tank
EP0202217A3 (en) * 1985-05-14 1988-11-02 Nippon Mining Company Limited A stirrer for use in liquid storage tanks, and a method for determining its position in the tank

Also Published As

Publication number Publication date
FR2305742B1 (en) 1979-03-09

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Legal Events

Date Code Title Description
TP Transmission of property