Use of the Navy Satellite System in Geodetic Surveying

The question of how multiple-pass data from the Navy Satellite System can be processed to yield an optimal estimate of the latitude, longitude, and elevation of a point on the Earth's surface is considered. It is demonstrated that the problem can be treated by use of modern estimation techniques. Two methods are considered: Kalman estimation and weighted least-squares estimation. The variance of the estimation errors is compared for a simulated sequence of 50 satellite passes.     

On the orientation vector differential equation in strapdowninertial systems

An alternate derivation of the orientation vector differential equation is given, together with an assessment of the error inherent in the simplified form of this equation commonly utilized in strapdown inertial systems