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 detection environment, improve the detection accuracy, and improve detection performance)