从先验概率中采样，计算权重，本程序的性能已经超过其他算法，在matlab R2009b调试通过，是学习PCA特征提取的很好的学习资料，滤波求和方式实现宽带波束形成，pwm整流器的建模仿真。- Sampling a priori probability, calculate the weight, This program has exceeded the performance of other algorithms, In matlab R2009b debugging through, I