FR2370284A1 - Measurement of linear acceleration for inertial navigation - uses polarisation interferometer with ultra-sensitive ellipsometer to determine direction and magnitude of acceleration - Google Patents

Measurement of linear acceleration for inertial navigation - uses polarisation interferometer with ultra-sensitive ellipsometer to determine direction and magnitude of acceleration

Info

Publication number
FR2370284A1
FR2370284A1 FR7633221A FR7633221A FR2370284A1 FR 2370284 A1 FR2370284 A1 FR 2370284A1 FR 7633221 A FR7633221 A FR 7633221A FR 7633221 A FR7633221 A FR 7633221A FR 2370284 A1 FR2370284 A1 FR 2370284A1
Authority
FR
France
Prior art keywords
acceleration
ellipsometer
interferometer
attached
inertial navigation
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
FR7633221A
Other languages
French (fr)
Other versions
FR2370284B1 (en
Inventor
Alain Orszag
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.)
Etat Francais
Original Assignee
Etat Francais
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 Etat Francais filed Critical Etat Francais
Priority to FR7633221A priority Critical patent/FR2370284A1/en
Publication of FR2370284A1 publication Critical patent/FR2370284A1/en
Application granted granted Critical
Publication of FR2370284B1 publication Critical patent/FR2370284B1/fr
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P15/00—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
    • G01P15/02—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses
    • G01P15/08—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values
    • G01P15/093—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values by photoelectric pick-up

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Length Measuring Devices By Optical Means (AREA)

Abstract

Precise measurement of linear acceleration is required for inertial navigation. These measurements are obtained by combining a polarisation interferometer with an ultra sensitive ellipsometer. Variations of ellipticity are translated into movement of a mirror and then into acceleration. A separating cube (2) and two mirrors (3, 4) comprise an interferometer. The cube and one mirror (3) are attached to the housing (5) in turn attached to the housing (5) inturn attached to the accelerating mass (c). A test mass (6) is attached to the housing by a thin thread (7). A laser source (1) provides light for the interferometer whose output is directed to the ellipsometer (17). This laser source is common to three accelerometers to give direction of acceleration.
FR7633221A 1976-11-04 1976-11-04 Measurement of linear acceleration for inertial navigation - uses polarisation interferometer with ultra-sensitive ellipsometer to determine direction and magnitude of acceleration Granted FR2370284A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7633221A FR2370284A1 (en) 1976-11-04 1976-11-04 Measurement of linear acceleration for inertial navigation - uses polarisation interferometer with ultra-sensitive ellipsometer to determine direction and magnitude of acceleration

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7633221A FR2370284A1 (en) 1976-11-04 1976-11-04 Measurement of linear acceleration for inertial navigation - uses polarisation interferometer with ultra-sensitive ellipsometer to determine direction and magnitude of acceleration

Publications (2)

Publication Number Publication Date
FR2370284A1 true FR2370284A1 (en) 1978-06-02
FR2370284B1 FR2370284B1 (en) 1980-03-21

Family

ID=9179527

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7633221A Granted FR2370284A1 (en) 1976-11-04 1976-11-04 Measurement of linear acceleration for inertial navigation - uses polarisation interferometer with ultra-sensitive ellipsometer to determine direction and magnitude of acceleration

Country Status (1)

Country Link
FR (1) FR2370284A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1983003010A1 (en) * 1982-02-24 1983-09-01 Jackson, David, Alfred Optical displacement sensing apparatus
US4572670A (en) * 1982-10-25 1986-02-25 Rockwell International Corporation Interferometric piezoelectric change of state monitor
US4686858A (en) * 1985-04-19 1987-08-18 Muscatell Ralph P Flight instrument using light interference for acceleration sensing
WO2023201936A1 (en) * 2022-04-18 2023-10-26 北京华卓精科科技股份有限公司 Accelerometer

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1983003010A1 (en) * 1982-02-24 1983-09-01 Jackson, David, Alfred Optical displacement sensing apparatus
US4572670A (en) * 1982-10-25 1986-02-25 Rockwell International Corporation Interferometric piezoelectric change of state monitor
US4686858A (en) * 1985-04-19 1987-08-18 Muscatell Ralph P Flight instrument using light interference for acceleration sensing
WO2023201936A1 (en) * 2022-04-18 2023-10-26 北京华卓精科科技股份有限公司 Accelerometer

Also Published As

Publication number Publication date
FR2370284B1 (en) 1980-03-21

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Legal Events

Date Code Title Description
DL Decision of the director general to leave to make available licences of right
ST Notification of lapse