A Generation Method of GPS IF Signal under Carrier Rotating Conditions

The GPS IF signal is the key aspect for researches on the characteristics of GPS signal and the design of acquisition and tracking loops.It is difficult to obtain GPS IF signal in highly dynamic rotating situation,the simulation technique would be adopted to gain the signal.Based on comprehensively analyzing the impact of satellite elevation,the gain of GPS antenna and rotation of carrier to GPS satellites visibility and the GPS IF signal,a model of GPS IF signal in highly dynamic rotating situation was developed,a generation method of GPS IF signal was proposed and the IF signal was simulated in Matlab platform.The method may be valuable in the theory research and the project application in verifying trajectory determination method for highly dynamic rotating carrier.