频谱感知算法用于频谱空洞检测，改变检验统计量同时减少检测环境的限制，使其更接近真实检测环境，提高检测准确性，从而提高检测性能(Spectrum sensing algorithm is used to detect the spectrum holes, change the test statistics, and reduce the detection environment constraints, so that it can be closer to the real detecti