US3412239A
Expired / Lapsed
US
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Algebraic-integration inertial navigation system
Assignee: Unisys Corp
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Filing: 1963-01-22
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Granted: 1968-11-19
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Expires: 1983-01-22
Abstract
No abstract record available.
Inventors
- 👤 Victor H Seliger
- 👤 Blazek Henry
- 👤 Stahl Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:17
CPC Classifications
G; G06; G06F; G06F7/00; G06F7/60; G06F7/64; G06F7/66; G01; G01C; G01C21/00; G01C21/10; G01C21/12; G01C21/16; G01C21/166; G01C21/183; G01C21/188
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
AN INERTIAL NAVIGATION SYSTEM HAVING AS SENSORS AN ALTIMETER, OTHOGONALLY ARRANGED GYROS AND ACCELEROMETERS AND A RADAR DOPPLER, MEANS CONNECTED TO SAID GYROS FOR DETEMINING DIRECTION COSINES FOR CONVERTING THE VELOCITY AND DISPLACEMENT INCREMENTAL OUTPUTS OF THE ACCELEROMETERS AND DOPPLER, RESPECTIVELY, FROM THE BODY TO INERTIAL FRAME A COORDINATE CONVERTER CONNECTED TO THE DIRECTION COSINE DETERMINING MEANS, A MEANS FOR COMPUTING WS2 CONNECTED TO SAID ALTIMETER, AN -R POSITION DETERMINING COMPUTER ARRANGED TO RECEIVE THE OUTPUT OF THE COORDINATE CONVERTER AND WS2 COMPUTING MEANS AND A WHOLE NUMBER COMPUTER FOR DETERMINING COURSE, VELOCITY AND LONGITUDE AND LATITUDE POSITION CONNECTED TO SAID -R POSITION DETERMINING COMPUTER, WHEREIN WS IS SCHULER FREQUENCY AND R IS A VECTOR QUANTITY REPRESENTING DISTANCE TO THE CENTER OF THE EARTH.
Claim 2
Dependent Claim
124 words
AN INERTIAL NAVIGATION SYSTEM HAVING AS SENSORS AN ALTIMETER, OTHOGONALLY ARRANGED GYROS AND ACCELEROMETERS AND A RADAR DOPPLER, MEANS CONNECTED TO SAID GYROS FOR DETEMINING DIRECTION COSINES FOR CONVERTING THE VELOCITY AND DISPLACEMENT INCREMENTAL OUTPUTS OF THE ACCELEROMETERS AND DOPPLER, RESPECTIVELY, FROM THE BODY TO INERTIAL FRAME A COORDINATE CONVERTER CONNECTED TO THE DIRECTION COSINE DETERMINING MEANS, A MEANS FOR COMPUTING WS2 CONNECTED TO SAID ALTIMETER, AN -R POSITION DETERMINING COMPUTER ARRANGED TO RECEIVE THE OUTPUT OF THE COORDINATE CONVERTER AND WS2 COMPUTING MEANS AND A WHOLE NUMBER COMPUTER FOR DETERMINING COURSE, VELOCITY AND LONGITUDE AND LATITUDE POSITION CONNECTED TO SAID -R POSITION DETERMINING COMPUTER, WHEREIN WS IS SCHULER FREQUENCY AND R IS A VECTOR QUANTITY REPRESENTING DISTANCE TO THE CENTER OF THE EARTH.
References Cited (Backward Citations)
US2953303A
Cited
US2914763A
Cited
US3103579A
Cited
US3087333A
Cited
US3028592A
Cited
US2996268A
Cited
US3021068A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-11-19 | 1972-05-20 | 1972-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-19 | 1976-05-20 | 1976-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-19 | 1980-05-20 | 1980-11-19 | $7700.00 | Window Closed / Lapsed |