Fixed-point single-precision estimationMonte Carlo simulation of autonomous orbit determination has validated the use of an 18-bit NASA Standard Spacecraft Computer (NSSC) for the extended Kalman filter. Dimensionally consistent scales are chosen for all variables in the algorithm, such that nearly all of the onboard computation can be performed in single precision without matrix square root formulations. Allowable simplifications in algorithm implementation and practical means of ensuring convergence are verified for accuracies of a few km provided by star/vertical observations
Document ID
19760060135
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Thompson, E. H. (Westinghouse Electric Corp. Baltimore, MD, United States)
Farrell, J. L. (Westinghouse Electric Corp. Baltimore, Md., United States)
Date Acquired
August 8, 2013
Publication Date
August 1, 1976
Subject Category
Astrodynamics
Report/Patent Number
AIAA PAPER 76-819
Meeting Information
Meeting: Astrodynamics Conference
Location: San Diego, CA
Start Date: August 18, 1976
End Date: August 20, 1976
Sponsors: American Institute of Aeronautics and Astronautics and American Astronautical Society