The data processing method of a mobile satellite communication system

The present invention discloses a data processing method for mobile satellite communications system, comprising the following steps: Step 1: represents the original position of the latitude and longitude are converted into the form of hour, minute, and will be offset processing latitude and longitude, the shift position information to the editing position data 22 digits b1 ~ b22; step 3: 2 position data obtained in step 21 of encoding digits; step 4: the receiver receives 19 digits position data calculated by the inverse solution of the position data 21 digits; step 5: the complement of the packets by type, to obtain position data 22 digits; step 6:22 position data digits of latitude and longitude inverse to give the original position information. The present invention is the above method, resulting in large volumes of data can solve the problem of low channel utilization, improve the performance of the tracking system, but also protect the security of user data transmission.