Research On The Key Techniques Of Compass Receiver

Satellite navigation system can provide for vast number of users around the surface of the earthand in the space with the with high precision positioning, navigation and timing services all-time,all-weather.It is the important space infrastructure for expansion of human activities and promotionsocial development. With the gradual improvement of Compass navigation system, all companieswho product navigation receiver begin to research techniques of the compass navigation.The emphasis of this paper is baseband processing and navigation result calculation.And in thispaper I mainly do work following:(1) Baseband processing includes signal acquisition and tracking. Signal acquisition studys fourmeans with simulation and analysis of advantages and disadvantages such as serial acquisition、Tongacquisition、parallel frequency search and parallel code phase search,and tell how to choose means ofacquisition in engineering practice.In the part of tracking it first expatiates the principle of theloop,huangxiaohu then gives the assurance loop stability parameter setting method, and thenanalyzes several factors which influence the performance of the two loops, finally I puts forward twoways to the improve the performance of loop.(2) Navigation result calculation firsit uses the least-squares method to calculate the receiver’spostion, then analyzes the algorithm of positioning error, finally using filter to solve the problem ofjump point in engineering.(3) In the end it introduces some kinds of the error and models which eliminate the errors. Bysimulation it tells how much in precision the models improve.