Analysis of Range and Position Comparison Methods as a Means to Provide GPS Integrity in the User Receiver

Young C. Lee

Abstract:	Integrity is the ability of a system to let its users know whether the system is operating out of its specified performance limits. This paper analyzes two receiver-based methods for assuring the integrity of Global Positioning System (GPS) signals-in-space. These methods are called the range comparison method and the position comparison method. Equations relating unknown satellite range errors to the quantity measured in each method are analyzed. The equations reveal important characteristics of the methods, including their mathematical equivalence. The performance of the two methods is derived in terms of satellite range errors. Numerical results are then obtained for the performance of the methods, alone and in combination with monitoring of the receiver clock bias estimate.
Published in:	Proceedings of the 42nd Annual Meeting of The Institute of Navigation (1986) June 24 - 26, 1986 Seattle, Washington
Pages:	1 - 4
Cite this article:	Lee, Young C., "Analysis of Range and Position Comparison Methods as a Means to Provide GPS Integrity in the User Receiver," Proceedings of the 42nd Annual Meeting of The Institute of Navigation (1986), Seattle, Washington, June 1986, pp. 1-4.
Full Paper:	ION Members/Non-Members: 1 Download Credit Sign In