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Updating inertial navigation systems with VOR/DME information.Demonstration that updating an inertial navigation system (INS) with VOR/DME information (from one or two stations) by means of a maximum-likelihood filter results in substantial improvements in navigational accuracy over that obtained by the use of a single VOR/DME (current practice). When continuously updating, the use of a high-quality INS (0.01 deg/hr gyro drift) instead of a low-quality INS (1.0 deg/hr gyro drift) does not substantially improve position accuracy. In-flight alignment (or realignment) of an INS to an accuracy comparable to that of ground alignment can be accomplished by using two DMEs. Several reduced-order suboptimal filters were found to perform nearly optimally.
Document ID
19720055417
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Bobick, J. C.
(U.S. Navy, Center for Naval Analyses, Arlington Va., United States)
Bryson, A. E., Jr.
(Stanford University Stanford, Calif., United States)
Date Acquired
August 6, 2013
Publication Date
August 1, 1972
Subject Category
Navigation
Report/Patent Number
AIAA PAPER 72-846
Meeting Information
Meeting: American Institute of Aeronautics and Astronautics, Guidance and Control Conference
Location: Stanford, CA
Start Date: August 14, 1972
End Date: August 16, 1972
Sponsors: American Institute of Aeronautics and Astronautics
Accession Number
72A39083
Funding Number(s)
CONTRACT_GRANT: F33615-72-C-1297
CONTRACT_GRANT: NGL-05-020-007
CONTRACT_GRANT: NGR-05-020-431
Distribution Limits
Public
Copyright
Other

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