Sins / Gps Carrier Phase-based System

Integrated navigation technology can effectively improve the performance of navigation system. This paper researches on the theory analyzing, model building and simulation of an SIN/GPS integrated system that is based on carrier phase.The computation of integer ambiguity and correction of cycle slip are the two important factors for acquiring accurate result in the application of carrier phase. Based on current research, this paper adopts a new algorithm of integer ambiguity, while carries out an advanced measurement of cycle slip.The design of Kalman filter adopts indirect feedback mode. Utilizing the information transmitted from GPS, while acquiring position by SINS, we can easy calculate the distance between object and satellite. At the same time we can estimate the error by Kalman filter. Simulation results show that the systematic precision of position and speed has quite remarkable improvement in case of integrated discontinuity at short intervals.At last, this paper presents an imagination of SINS/pseudolite inertial system based on carrier phase, and make some discussion on its application. Because of the characters of low cost, preventing from destruct and independence, it has a promising prospect in military field.