Navigation Performance and Integrity Monitoring for Ballistic Missiles Using All-In-View GPS

摘要

The intent of this thesis is to analyze the performance of a ballistic missileusing an all-in-view GPS 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 GPS 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.