Accession Number : ADA308828
Title : Navigation Performance and Integrity Monitoring for Ballistic Missiles Using All-In-View GPS.
Descriptive Note : Master's thesis,
Corporate Author : AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH
Personal Author(s) : Hassannia, Jeff H.
PDF Url : ADA308828
Report Date : MAY 1994
Pagination or Media Count : 161
Abstract : The proven success of the Global Positioning System (GPS) and recent technological innovations have resulted in a call for incorporation of the system into more advanced applications. One example has been the recent upgrading of navigation systems in ballistic missiles to include OPS technology. Advances have also included the development of receivers with enough channels to use all satellites in the field of view. The intent of this thesis is to analyze the performance of a ballistic missile using an all-in- view OPS receiver versus the more common satellite selection algorithms, most often four or five satellites chosen by their geometry. The performance will be measured by the navigational capabilities of the missile and the vehicle's ability to mitigate the effects of a bad OPS satellite. This latter performance indicator is not integrity monitoring as commonly interpreted, although one plausible form of it. The performance of the ballistic missile is measured through the use of a linear covariance analysis simulation. In general it is shown that significant performance enhancements are available by using an all-in-view receiver. In terms of navigation, it is shown that an all-in-view receiver can expect to achieve as much as a 35 and 45% improvement in Circular Error Probable (CEP) versus a five and four channel receiver, respectively. It is also demonstrated that all-in-view capabilities can allow a missile to overcome the degradation seen in four and five channel receivers when a OPS satellite goes bad. The research further suggests that all-in-view can mitigate the effects of even a worst case scenario. However, with the assumptions in the thesis it is believed that the final results are optimistic. This therefore calls for more in-depth research and study.
Descriptors : *GUIDED MISSILES, *NAVIGATION, *GLOBAL POSITIONING SYSTEM, ALGORITHMS, LINEAR SYSTEMS, SCENARIOS, SIMULATION, DEGRADATION, MONITORING, THESES, MATHEMATICAL ANALYSIS, RECEIVERS, ARTIFICIAL SATELLITES, COVARIANCE, INDICATORS, SELECTION, CHANNELS, CIRCULAR ERROR PROBABLE.
Subject Categories : Guided Missiles
Navigation and Guidance
Distribution Statement : APPROVED FOR PUBLIC RELEASE