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Advances and Test Results in Differential GPS Navigation

The concept of differential GPS has been under study, test and refinement for about 10 years. Operational use of differential GPS is now practical, effective and highly reliable. Refinements to the concept of differential GPS have evolved over this period, several of which have been reported by Trimble Navigation personnel. It is now reasonable to conclude that the ‘second generation’ of differential GPS has arrived, with a collection of technical improvements and features that make its use even more accurate, robust and reliable.