以谱相关理论为基础，针对直接序列扩频（ＤＳ／ＳＳ）通信系统的可截获性问题，提出了利用频域谱相关自适应滤波技术对噪声和干扰环境下的扩频信号进行检测，及对时域和功率谱域严重重叠信号进行分选的一种算法．对直接序列扩频信号的仿真结果表明，该算法具有速度快、噪声和干扰抑制能力强等特点，因而文中提出的算法是切实可行的． Based on spectral correlation theory, aiming at the problem of interceptability of direct sequence spread spectrum (DS / SS) communication system, this paper proposes the detection of spread spectrum signals in noisy and interfering environments by using frequency-domain spectral adaptive filtering technique An algorithm that separates signals that are severely overlapped in the time and power spectral domains. The simulation results of the direct sequence spread spectrum signal show that the proposed algorithm has the characteristics of fast speed, strong noise and interference suppression, and so the proposed algorithm is feasible.