Acquisition Algorithm of High-Order BOC Modulation Satellite Communication Signal Based on Big Data

Satellite navigation and positioning systems play a key role in the political, military and economic aspects of a country. With the rapid development of our country's Beidou satellite navigation system, the research on signal receiving technology, especially satellite communication signal acquisition algorithm, has become an important field of navigation system application development. Starting from big data, this paper conducts in-depth research on the acquisition algorithm of high-order BOC modulation satellite communication signals. This article first analyzes the capture performance of the traditional serial capture algorithm, summarizes the relevant characteristics of BPSK-R and BOC modulation signals, designs a double-sideband capture scheme based on matched filters, and gives the design process and parameters of the scheme in detail. In this paper, taking BOC (15, 2.5) modulated satellite signal as an example, the acquisition performance of multi-peak detection time-domain parallel acquisition algorithm is studied. Through simulation and testing, the simulation data shows that when the carrier-to-noise ratio is 40dB. Hz and the false alarm probability is 0.001, the detection probability can reach more than 0.99. Therefore, the multi-peak detection time-domain parallel capture algorithm in this paper is a capture algorithm that can meet performance requirements, improves capture efficiency and reduces resource usage.