说明：  对于非合作纯盲突发信号，利用滑动窗口能量比值法 Energy ration detector （ERD）进行信号检测，检测出信号起始与结束位置，算法原理见论文
(For non cooperative pure blind burst signal, the sliding window energy ratio detector (ERD) is used to detect the signal, and the start and end positions of the signal are detected. The principle of the algorithm is shown in the paper)