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