Beidou short message compression

SMS communication process: (1) The sender of Wright SMS encrypts the communication application signal including the ID number of the receiver and the communication content, and forwards it to the station via satellite; (2) After receiving the communication application signal, the ground central station decrypts and re-encrypts it, and then adds it to the external broadcast message to continue broadcasting, and broadcasts it to users via satellite; (3) The receiver user machine receives the outbound signal, demodulates and decrypts the outbound message, and completes a communication.

Similar to the location function, the transmission delay of short message communication is about 0.5 seconds, and the highest communication frequency is 1 second 1 time. Principle of Beidou short message communication technology

Wright's command machine can obtain the data sent to it through serial port, and receive and process the data through coding programs such as JAVA, thus realizing various applications.

Serial asynchronous transmission, parameters are defined as follows:

(1) transmission rate: 19200bit/s (default), other rates can be set according to the specific situation of the user's machine;

(2) 1 initial position;

(3)8 bits of data;

(4) 1 stop bit;

(5) There is no verification.