Abstract

The problem of Global Positioning System (GPS) and differential GPS (DGPS) integrity monitoring is discussed. The use of DGPS for navigation-critical marine applications (for example, harbor crossing) requires the navigation signals integrity monitoring. Integrity monitoring consists of two functions: detection of the fact that a navigation satellite produced wrong data; isolation or identification of which DGPS channel (satellite) is malfunctioning. The paper describes a new optimal statistical approach to these problems.

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