提出了多尺度小波能量积累器的概念 ,并给出了相应的多尺度小波能量积累算法 ,将信号在不同分解尺度上的小波能量进行积累。在此基础上设计出一种用于弱信号检测的小波能量检测算法 ,对低信噪比信号检测进行了仿真实验。仿真结果表明 ,该检测算法对强白噪声及强色噪声背景下的低信噪比信号的检测非常有效 ,与传统的信号检测方法相比具有显著优越性 The concept of multi-scale wavelet energy accumulator is proposed, and the corresponding multi-scale wavelet energy accumulation algorithm is given, which accumulates the wavelet energy in different decomposition scales. On this basis, we design a wavelet energy detection algorithm for weak signal detection, and simulate the low signal-to-noise ratio signal detection. The simulation results show that the proposed algorithm is very effective in the detection of low signal-to-noise ratio (SNR) signals under strong white noise and strong colored noise. Compared with the traditional signal detection methods, this algorithm has significant advantages