直扩信号的捕获研究与设计

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中图分类号：TN927.1 文献标志码：A 文章编码：1672-7274（2025）11-0080-03

Research and Design of Acquisition forDSSS Signal

FANG Yingyong

（NanjingPandaHanda TechnologyCo.，Ltd.，Nanjing21oo14，China）

Abstract： Foracquisition of Direct Sequence Spread Spectrum （DSSS） signal， the fundamental principle of timedomain partialmatchedFFTacquisitionalgorithmisresearched.Then，this paper analyzes the impact of matched length andfrequency.Finally，anapplicationof the time-domain partial matched FFTacquisition algorithm is presented， including aimplementation based on FPGA and an analysis of its acquisition performance.

Keywords：DSSS; acquisition; FFT

0 引言

直序列扩频（DSSS）信号常采用伪随机序列（PN）码进行扩频，具备很强的自相关性[1，已被广泛应用于卫星通信的信号捕获领域。（剩余4586字）