附件是《软件定义的GPS和伽利略接收机》一书的matlab代码，开发者可以学习、利用、优化和提升，详细它会给你带来很多灵感。(The appendix is the matlab code of the book "software defined GPS and Galileo Receiver". Developers can learn, use, optimize and upgrade, and it will give you a lot of inspirati