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GB1196689A - Improvements in or relating to Navigation Aiding Equipments - Google Patents

Improvements in or relating to Navigation Aiding Equipments

Info

Publication number
GB1196689A
GB1196689A GB1968168A GB1968168A GB1196689A GB 1196689 A GB1196689 A GB 1196689A GB 1968168 A GB1968168 A GB 1968168A GB 1968168 A GB1968168 A GB 1968168A GB 1196689 A GB1196689 A GB 1196689A
Authority
GB
United Kingdom
Prior art keywords
ring
ball
pair
detectors
component
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
GB1968168A
Inventor
Ronald Arthur Tyler
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.)
BAE Systems Electronics Ltd
Original Assignee
Marconi Co Ltd
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 Marconi Co Ltd filed Critical Marconi Co Ltd
Priority to GB1968168A priority Critical patent/GB1196689A/en
Publication of GB1196689A publication Critical patent/GB1196689A/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
    • G01S11/00—Systems for determining distance or velocity not using reflection or reradiation
    • G01S11/12—Systems for determining distance or velocity not using reflection or reradiation using electromagnetic waves other than radio waves
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/64—Devices characterised by the determination of the time taken to traverse a fixed distance
    • G01P3/68—Devices characterised by the determination of the time taken to traverse a fixed distance using optical means, i.e. using infrared, visible, or ultraviolet light
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/64—Devices characterised by the determination of the time taken to traverse a fixed distance
    • G01P3/80—Devices characterised by the determination of the time taken to traverse a fixed distance using auto-correlation or cross-correlation detection means
    • G01P3/806—Devices characterised by the determination of the time taken to traverse a fixed distance using auto-correlation or cross-correlation detection means in devices of the type to be classified in G01P3/68
    • 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
    • G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
    • G01S17/02—Systems using the reflection of electromagnetic waves other than radio waves
    • G01S17/50—Systems of measurement based on relative movement of target
    • G01S17/58—Velocity or trajectory determination systems; Sense-of-movement determination systems

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Navigation (AREA)

Abstract

1,196,689. Optical navigation. MARCONI CO. Ltd. 27 Feb., 1969 [25 April 1968], No. 19681/68. Addition to 1,123,950. 1,1g Heading H4D. [Also in Division G1] Two components of a vehicles velocity over a surface of variable reflectivity are respectively detected by pairs of photo detectors A, B and C, D, each component being determined by feeding the detectors outputs to a correlatorone via a variable delay-and thereby determining the time taken for an area of surface to pass from the field of view of one detector to the other. The vehicle is exemplified as a car and means are provided illuminating the areas under each detector, said areas being such (e.g. as shown in dotted lines for detectors A and B) that at least part of the ground illuminating under a first detection of a pair will pass to be illuminated under the second detection of said pair. The components may be orthogonal as shown and signals proportional thereto are fed to a rolling ball moving map display Fig. 4. One component signal causes rotation of motor 8 and, by means of shaft gear 6 engaging teeth 5 on the inside of ring 1, the rotation of ring 1 bearing against the ball bearing 18. The ring rotates on axle 2 journalled in bearings 4 in a ring 3. Ring 3 is rotated in accordance with the second component of velocity by means of motor 17 and shaft gear 15 engaging ring teeth 14. Ball 18 is thus caused to rotate in a direction such that a map 19, frictionally supported by said ball, moves in accordance with the vehicles velocity, a pair of cross wires 21/22 indicating the position of the vehicle. A pen may be provided at the cross wire intersection to produce a course record.
GB1968168A 1968-04-25 1968-04-25 Improvements in or relating to Navigation Aiding Equipments Expired GB1196689A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1968168A GB1196689A (en) 1968-04-25 1968-04-25 Improvements in or relating to Navigation Aiding Equipments

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1968168A GB1196689A (en) 1968-04-25 1968-04-25 Improvements in or relating to Navigation Aiding Equipments

Publications (1)

Publication Number Publication Date
GB1196689A true GB1196689A (en) 1970-07-01

Family

ID=10133416

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1968168A Expired GB1196689A (en) 1968-04-25 1968-04-25 Improvements in or relating to Navigation Aiding Equipments

Country Status (1)

Country Link
GB (1) GB1196689A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2129641A (en) * 1982-11-09 1984-05-16 Marconi Co Ltd A passive target detector
CN110133319A (en) * 2019-05-10 2019-08-16 国网上海市电力公司 High speed grounding switch spindle angular velocity detection device in a kind of GIS device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2129641A (en) * 1982-11-09 1984-05-16 Marconi Co Ltd A passive target detector
US4614426A (en) * 1982-11-09 1986-09-30 The Marconi Company Limited Passive target detector
CN110133319A (en) * 2019-05-10 2019-08-16 国网上海市电力公司 High speed grounding switch spindle angular velocity detection device in a kind of GIS device

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Legal Events

Date Code Title Description
PS Patent sealed
PE Patent expired