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中文摘要：
针对窄带干扰中BPSK直扩信号检测，提出了一种基于循环谱的新的检测方法，给出了具体检测流程，分析了检测性能。该方法充分利用了窄带干扰和直扩信号的循环平稳特性，通过峰值搜索检测信号。在不需要知道信号伪码序列和频率参数等先验信息的情况下，该检测方法在窄带强干扰中能有效地实现直扩信号盲检测。仿真实验证明了所提出检测方法的有效性。
英文摘要：
To detect DS-SS signal in narrow-band interference, a new method is presented based on cyclic spectrum. The procedure is given and the performance is analyzed, The new method which exploits the cyclostationary of DS-SS signal and narrow-band interference detect DS-SS signal by peak searching. The I）S-SS signal can be detected in low SIR without a priori knowledge of pseudorandom sequence and frequency. The simulation results have proved the validity of the method.
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