快速扩展随机生成树算法，用于时频分析算法，从先验概率中采样，计算权重，虚拟力的无线传感网络覆盖，用MATLAB实现的压缩传感，信号维数的估计。- Rapid expansion of random spanning tree algorithm, For time-frequency analysis algorithm, Sampling　a priori probability, calculate the weight, Virtual power wireless sensor network coverage, Using MATLAB compressed sensing, Signal dimension estimates.