Satellite Navigation User Receiver

Satellite navigation user receiver is an application terminal of the satellite navigation system. It consists of a navigation receiver and a navigation positioning processor. Because of the high‐speed motion of the satellite relative to Earth, and the high‐speed motion of the user‐carrier relative to the ground, there is always high‐speed relative motion between satellite navigation signals and navigation receiver for the user, whether so‐called static users or dynamic users. The pseudorange measurement and positioning treatment of the user receiver is subject to dynamic effects. The navigation receiver uses non‐coherent delay locked loop (DLL) to complete the acquisition, tracking of the navigation signals, and recovers satellite navigation signals. This chapter introduces navigation positioning solving equation and positioning accuracy estimation. The navigation filter can be used in order to further improve positioning accuracy and velocity measurement accuracy. The function of positioning and filter processing is to convert pseudorange observation values into user position estimation values.