A Simulation for Positioning and Timing of GPS Software Receiver

GPS positioning and timing are more and more essential to our daily life and they are widely used in our daily life, such as radio and television, land, sea and air navigation, engineering surveying, geodesy and so on. This paper mainly achieved the simulation of GPS software receiver´s positioning and timing function. Through NovAtel´s Superstar-II receiver, the data was collected and then decoded based on Matlab. Next, the parameters needed by positioning calculation and timing are extracted. And in accordance with the corresponding algorithm there is a completion for GPS positioning and timing module´s simulation. Finally there is a error analysis for the results of positioning calculation and timing. And according to the experimental results, the positioning and timing accuracy can meet the basic requirement.