High-efficiency navigation signal correlation peak fine sampling calculation method

The invention discloses a high-efficiency navigation signal correlation peak fine sampling calculation method, and in order to accurately evaluate the signal quality of a navigation satellite, a signal quality monitoring system needs to carry out fine sampling on correlation peaks of navigation signals at very small intervals. As the sampling interval of the correlation peak is very small, the traditional time domain correlation processing method for changing the local pseudo code phase has very high calculation complexity. In order to reduce the calculation complexity of correlation peak fine sampling, time domain correlation processing is converted into frequency multiplication processing, and then FFT is used for improving the calculation efficiency. According to the characteristic that only correlation values in a chip range need to be calculated in correlation peak fine sampling processing, the calculation amount is further reduced by using partial output FFT. Compared with a traditional processing metho