Segmented Fast Capture Algorithm Based on Combined Signals

For the situation that the combined localization signal reception in Time and Code division-orthogonal Frequency Division Multiplexing(TC-OFDM) system of terrestrial communication network needs to be captured quickly, the segmented fast capture algorithm based on combined signal is proposed to reduce the capture time by splitting the process of signal into stages and then introducing the matching library with the first stage index information to reduce the search domain in the second stage. After simulation experiments, it is proved that in the presence of communication interference and white noise interference, the capture speed can be improved by 35.44% using the algorithm proposed in this paper compared with the Partial Matched Filter-Fast Fourier Transform(PMF-FFT) algorithm.