ANNIHILATION METHOD FOR GPS INTEGER AMBIGUITY WITH RESIDUAL PROBABILITY SCORING

摘要

A method of locating a first GPS receiver relative to a second GPS receiver. The method includes the steps of: providing a first and second GPS receiver, the first and second GPS receiver spaced apart by a distance D along a baseline; receiving a finite number of observables from a plurality of GPS satellites in a finite period of time; performing in a batch mode the following series of calculations on the finite number of observables: calculating a least squares estimate position for each of the first GPS receiver and the second GPS receiver; calculating a plurality of single difference residuals; calculating a plurality of double difference residuals; calculating an estimate of a geometry free solution; applying geometric annihilation to the geometry free solution; and calculating a least squares solution to provide a measurement of the distance D. A batch processing mode differential GPS apparatus is also described.