FR2303271A1 - Navigational method and related equipment - uses sine-cosine potentiometer and makes incremental positional coordinate changes according to mathematical formulae - Google Patents

Navigational method and related equipment - uses sine-cosine potentiometer and makes incremental positional coordinate changes according to mathematical formulae

Info

Publication number
FR2303271A1
FR2303271A1 FR7506867A FR7506867A FR2303271A1 FR 2303271 A1 FR2303271 A1 FR 2303271A1 FR 7506867 A FR7506867 A FR 7506867A FR 7506867 A FR7506867 A FR 7506867A FR 2303271 A1 FR2303271 A1 FR 2303271A1
Authority
FR
France
Prior art keywords
changes according
related equipment
mathematical formulae
positional coordinate
coordinate changes
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.)
Withdrawn
Application number
FR7506867A
Other languages
French (fr)
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.)
ARDUIN XAVIER
Original Assignee
ARDUIN XAVIER
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 ARDUIN XAVIER filed Critical ARDUIN XAVIER
Priority to FR7506867A priority Critical patent/FR2303271A1/en
Publication of FR2303271A1 publication Critical patent/FR2303271A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
    • G01C21/10—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 by using measurements of speed or acceleration
    • G01C21/12—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 by using measurements of speed or acceleration executed aboard the object being navigated; Dead reckoning
    • G01C21/14—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 by using measurements of speed or acceleration executed aboard the object being navigated; Dead reckoning by recording the course traversed by the object

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Automation & Control Theory (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)

Abstract

The method of position determination involves making constant increments dx, dy in the known coordinates X deg. and Y deg. of latitude and longitude, where dx=Vr cos Cr/dt and dy= Vr sin Cr/dt where Vr is the actual velocity of the moving vehicle Cr is the true heading, and dt is the time interval between two successive increments. The instrument for putting this technique into practise includes a sine-cosine potentiometer (O) supplied by voltages - Va, + Va which prepresent the apparent velocity. The potentiometer provides the components Vr cos Cr and Vr sin Cr. The actual velocity Vr is determined from the apparent velocity (Va) and the drift (d) while the true heading Cr is determined from the magnetic heading (Cm) and the declination (D).
FR7506867A 1975-03-05 1975-03-05 Navigational method and related equipment - uses sine-cosine potentiometer and makes incremental positional coordinate changes according to mathematical formulae Withdrawn FR2303271A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7506867A FR2303271A1 (en) 1975-03-05 1975-03-05 Navigational method and related equipment - uses sine-cosine potentiometer and makes incremental positional coordinate changes according to mathematical formulae

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7506867A FR2303271A1 (en) 1975-03-05 1975-03-05 Navigational method and related equipment - uses sine-cosine potentiometer and makes incremental positional coordinate changes according to mathematical formulae

Publications (1)

Publication Number Publication Date
FR2303271A1 true FR2303271A1 (en) 1976-10-01

Family

ID=9152139

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7506867A Withdrawn FR2303271A1 (en) 1975-03-05 1975-03-05 Navigational method and related equipment - uses sine-cosine potentiometer and makes incremental positional coordinate changes according to mathematical formulae

Country Status (1)

Country Link
FR (1) FR2303271A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2470362A1 (en) * 1979-11-24 1981-05-29 Honda Motor Co Ltd APPARATUS FOR INDICATING THE POSITION OF A VEHICLE

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2470362A1 (en) * 1979-11-24 1981-05-29 Honda Motor Co Ltd APPARATUS FOR INDICATING THE POSITION OF A VEHICLE

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Legal Events

Date Code Title Description
ST Notification of lapse