GPS signal receiving and its algorithms under high dynamic circumstances

There is great Doppler frequency shift under high dynamic circumstances,thus the common GPS receiver cannot work reliably without the help of inertial navigation devices.To satisfy the requirements of the dynamic performance and also of the tracking accuracy during GPS signal receiving under high dynamic circumstances,we put forward a design scheme of GPS receiver for high dynamic circumstances,which focuses on DSP technique.The functions of each module are described in detail in this paper.We also studied the theory of three GPS signal parameter estimation algorithms adaptive to high dynamic circumstances,including MLE algorithm,Kalman filter algorithm,and FEKF algorithm.Through simulation,some performances of these algorithms are analyzed,including estimation precision,dynamically tracking ability etc.