CAJ | 학술논문

跳频信号作为扩频通信的一种，由于其具有较强的抗干扰，抗截获的能力，并能作到频谱资源共享，因此在军事应用中得到了广泛的应用。文章针对通信对抗中的跳频信号盲检测问题，提出了一种基于循环平稳特性的跳频信号盲检测算法。该算法将渐进最优x^2检验方法推广到跳频信号的检测问题上，提出检测统计量，从而完成对高斯白噪声环境下的跳频信号检测。实验结果表明，与传统能量检测方法相比，该算法对于高斯白噪声环境中的跳频信号具有更好的检测性能，且计算量小，易于实现。
도빈신호작위확빈통신적일충，유우기구유교강적항간우，항절획적능력，병능작도빈보자원공향，인차재군사응용중득도료엄범적응용。문장침대통신대항중적도빈신호맹검측문제，제출료일충기우순배평은특성적도빈신호맹검측산법。해산법장점진최우x^2검험방법추엄도도빈신호적검측문제상，제출검측통계량，종이완성대고사백조성배경하적도빈신호검측。실험결과표명，여전통능량검측방법상비，해산법대우고사백조성배경중적도빈신호구유경호적검측성능，차계산량소，역우실현。
As one of spread spectrum communication, frequency-hopping signals has been widely used in military applications because of its strong anti-interference, anti-interception and spectrum sharing. The paper proposes a blind detection algorithm of frequency-hopping signals based on cyclostationarity about blind detection of frequency-hopping signals in communication countermeasures. The algorithm extends the asymptotically optimal chi-squared test to frequency-hopping signals detection, and proposes test statistics, thus completes frequency-hopping detection in Gaussian white noise environment. Experimental results show that compared with traditional energy detection method, it has better detection performance in Gaussian white noise environment, needs smaller computation, and is easy to implement.