GPS M code signal regeneration method based on spreading code blind estimation

The invention discloses a GPS M code signal regeneration method based on spreading code blind estimation, which utilizes the characteristic that a GPS satellite broadcasts a C/A code and an M code signal at the same time, blind estimation is carried out on a chip of the M code by tracking the C/A signal, then a required deception signal is directly generated according to the recovered chip, and although the deception signal is limited by the carrier-to-noise ratio of a received signal, the deception signal can be directly deception. The spreading code obtained by blind estimation has a high error rate, but the deception signal received by the target can still have a high equivalent carrier-to-noise ratio by increasing the transmitting power. According to the invention, the number of array antenna array elements required by the M code deception system of the GPS can be reduced to 1/6 of the original number, the size and power consumption of the system are greatly reduced, and the portability of the system beco