Research on in-flight alignment based on single-epoch multiple-baselines combination positioning platform

A new positioning platform based on single-epoch multiple-baselines linear combination is developed for the low accuracy of the traditional double-difference carrier-phase positioning platform. In this platform the single-epoch integer ambiguity resolution is used to eliminate the cycle-slip detection and initialization problem. Combined with the multiple-baselines observed values, this platform also effectively decreases the effect, induced due to the increasing length of the single baseline. It shows more robust and accurate than the traditional ones in the simulation. At last, a better performance of the speed and accuracy in the in-flight alignment simulation is achieves by using this platform with multiple-baselines GPS attitude algorithm.