Satellite positioning data encryption system

The utility model relates to a satellite positioning data encryption system. Front-end equipment of the system processes information received by a satellite receiver via a front-end control processor, stores processed information in a memory, and sends the processed information to a communication link via a data transmission device; a central data transmission device receives the transmitted information from the communication link, transmits the information to a central control processor to be processed, stores the information in a central memory, and sends the processed information to a display device and an application system; the front-end control processor is connected with an encryption/verification signing chip for performing encryption processing of the information received by the satellite receiver and verifying received control instructions, and the central control processor is connected with a decryption/verification signing chip for performing decryption processing of the information received by the central data transmission device and signing for the control instructions sent to the front end. The system can guarantee the information security of front-end positioning data.