强混沌噪声背景下弱信号自适应检测

Adaptive Weak Signal Detection Used in Strong Chaotic Noise

本文提出了一种强混沌噪声中检测微弱正弦信号的自适应方法。该方法在硬件设计上容易实现,并且计算量小,算法复杂度为a(n)。计算机仿真实验结果表明:该方法能够比较精确地检测到强混沌噪声中的微弱信号,检测的信噪比可达到:-40dB。

An adaptive detection method which can detect weak signals in strong chaotic noise background is presented.In addition,the algorithm complexity of the method is O(n),so it can come into realization easily by hardware.At same time,the simulation results have proved that this method is practically feasible.When it is detected accurately comparatively,the SNR may arrive at-40 dB.