摘要
针对极短时间脉冲信号的检测问题 ,在无法借助于频域分析的情况下 ,阐述了两种检测方法。这两种方法均借助于对时域上背景噪声的统计 ,通过对局部信号能量与背景噪声的对比 ,检测出短时脉冲信号 ,并通过对两次试验数据的分析 。
For the condition that analytical methods in frequency domain could not be used in the detection for very short-time pulse, two detective methods are introduced in this paper. In these two methods, the environmental noise is calculated in time domain, and the short-time pulse is detected with the comparison of local signal's energy and noise's. The validity of these two methods are verified by the analysis with lake data and sea data.
出处
《舰船科学技术》
北大核心
2003年第6期21-23,共3页
Ship Science and Technology
