| 摘要: |
| 针对传统直接序列扩频信号扩频序列估计算法在非同步模式下存在相位模糊的问题，提出一种倍窗口相参子空间投影跟踪扩频序列估计算法，通过设置两倍扩频周期长度窗口策略直接获取完整扩频序列，并通过相参合并的策略进一步提高估计结果的可靠性，仿真实验验证了所提算法的有效性。 |
| 关键词: 直扩信号 扩频序列 迭代信号处理 倍窗口 子空间投影 |
| DOI： |
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| 基金项目: |
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| A double window coherent spread spectrum sequence estimation algorithm |
| LI Xing,WEI Xun,ZHANG Liqiang,SHENG Xing,HOU Xinjue |
| (Key Laboratory of Electro-Optical Countermearures Test&Evalution Technology,Luoyang 410073,China;Unit 96862 of PLA,Luoyang 410073,China) |
| Abstract: |
| To solve the problem of phase ambiguity in traditional spread spectrum sequence estimation algorithm of direct sequence spread spectrum(DSSS) signals in asynchronous mode,a double window coherent subspace projection tracking spread spectrum sequence estimation algorithm is proposed.The whole spread spectrum sequence is obtained directly by setting the window strategy of twice the period length of direct sequence spread spectrum,and the reliability of the estimation result is further improved by the strategy of coherent merging.Simulation results verify the effectiveness of the proposed algorithm. |
| Key words: DSSS signal spread spectrum sequence iterative signal processing double window subspace projection |
