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Range filtering for sequential GPS receiversThe filtering of the satellite range and range-rate measurements from single channel sequential Global Positioning System receivers is usually done with an extended Kalman filter which has state variables defined in terms of an orthogonal navigation reference frame. An attractive suboptimal alternative is range-domain filtering, in which the individual satellite measurements are filtered separately before they are combined for the navigation solution. The main advantages of range-domain filtering are decreased processing and storage requirements and simplified tuning. Several range filter mechanization alternatives are presented, along with an innovative approach for combining the filtered range-domain quantities to determine the navigation state estimate. In addition, a method is outlined for incorporating measurements from auxiliary sensors such as altimeters into the navigation state estimation scheme similarly to the satellite measurements. A method is also described for incorporating inertial measurements into the navigation state estimator as a process driver.
Document ID
19880030109
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Paielli, Russell
(NASA Ames Research Center Moffett Field, CA, United States)
Date Acquired
August 13, 2013
Publication Date
January 1, 1987
Subject Category
Aircraft Communications And Navigation
Meeting Information
Meeting: Institute of Navigation, National Technical Meeting
Location: Anaheim, CA
Country: United States
Start Date: January 20, 1987
End Date: January 23, 1987
Accession Number
88A17336
Distribution Limits
Public
Copyright
Other

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