扩频信号频域谱相关自适应滤波技术的研究

Study of technology of the spectrum adaptive filter for DS/SS signals

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 the spectrum correlation theory, a new method is presented for the problem of interception in direct sequence spread spectrum (DS/SS) system, which can detect DS/SS signals in the environment of noise and interference and sort signals overlapped in the time domain and frequency domain by using the technology of the spectrum correlation adaptive filter. Computer simulation for direct sequence spread spectrum (DS/SS) signals shows that this algorithm has the characteristics of high speed and powerful rejection for noise and interference so that it is practicable.