The basic parts of the BFSK transmitter are the preamble and the data input circuit. The preamble sequence is positioned in front of each packet of 122 bits for a total of 128 bits packet. The main purpose of the preamble is to facilitate the recepti

用来进行双边带幅度调制DSB_AM的MATLAB源程序。-Demonstration scr ipt for DSB-AM. The message signal is+1 for 0 < t < t0/3,-2 for t0/3 < t < 2t0/3, and zero otherwise.actually means Rx(m-1).

最小二乘法编写而成的，可以简单的使用其，解算GPS基于伪距的导航电文。(The least squares method can be used to solve the GPS navigation message based on pseudo range.)