The CWT estimation of PSK symbol rate estimation used for radar recognition

The PSK symbol rate estimation is the important part of parameter estimation in the radar recognition. Aiming at improving the traditional estimation method´s limitations due to the carrier-frequency, the sensitivity of phase noise and the time-domain histogram´s disadvantage, the PSK intermediate- frequency signal was mixed to the relatively strict baseband signal firstly. Secondly, the PSK sub-code edge´s detection function using the Harr Wavelet Base, the edge position and adaptive adjustment scales were defined. Lastly, the PSK symbol rate estimation method based on the Two-Scale CWT was proposed. The method not only improves the real-time and anti-noise performance, but also increases the accuracy. The MATLAB simulation verifies the improved method´s effectivity, which is used for BPSK and QPSK sign.als.