Design of fast acquisition algorithm for TDRSS burst signal

Driven by the problems that the Tracking and Data Relay Satellite System (TDRSS) cannot meet the requirement of cooperative burst communication (CBC), a spreading code structure based on the burst signal pilot channel and a fast acquisition algorithm based on this new signal structure are proposed. The new designed spreading code is composed of short spreading code sequence modulated by overlay code. By utilizing the features of new signal structure, the new algorithm segments the received burst signal into sections and respectively processes these sections by the FFT method. Then it synthetically analyzes of the acquisition results and estimates the burst signal information in the absence of preamble. Theoretical analysis and experiments with simulated data show that the algorithm has higher acquisition and transmission efficiency and can satisfy the TDRSS service requirements.