Accession Number : AD0474102

Title :   COMPUTER PRECISION STUDY II.

Descriptive Note : Final rept. 15 Jan-25 Oct 65,

Corporate Author : IBM FEDERAL SYSTEMS DIV GAITHERSBURG MD

Personal Author(s) : Sward, Donald V. ; Holick, Anton

Report Date : 25 OCT 1965

Pagination or Media Count : 291

Abstract : Future long-term self-contained navigation requirements for orbital missions will depend on spaceborne digital computers to perform appropriate computations and information processing. This study is directed to analyze the magnitude and effects of computer induced errors on the precision for typical self-contained near earth orbital navigation systems. Results and conclusions are based on a landmark tracking navigation system. However, a number of the results presented here have general applicability, for example, the investigation of trajectory integration between observations is independent of the type of navigation sensors used. On the other hand, the results presented here could be affected in varying degrees, depending on changes to the instrumentation system and the errors introduced by these alternatives. (Author)

Descriptors :   , (*NAVIGATION COMPUTERS, SPACECRAFT), DIGITAL COMPUTERS, ERRORS, ALGORITHMS, NAVIGATION, ORBITS, SIMULATION, DRAG, ACCELERATION, COMPUTER PROGRAMMING, NUMERICAL ANALYSIS.

Subject Categories : Space Navigation and Guidance

Distribution Statement : APPROVED FOR PUBLIC RELEASE