为了提高电力通信光缆外力破坏的预警检测能力,提出基于TDOA(Time Difference of Arrival)技术的电力通信光缆外力破坏预警系统设计方法。采用多普勒频谱感知的方法,构建电力通信光缆外力破坏的参数识别模型;利用加权求和的方法,融合外...为了提高电力通信光缆外力破坏的预警检测能力,提出基于TDOA(Time Difference of Arrival)技术的电力通信光缆外力破坏预警系统设计方法。采用多普勒频谱感知的方法,构建电力通信光缆外力破坏的参数识别模型;利用加权求和的方法,融合外力破坏参数;采用频谱感知算法优化TODA(Time Difference of Arrival),提取破坏预警信号特征,对预警信号进行频谱特征分解,实现破坏预警。仿真结果表明:采用该方法进行电力通信光缆外力破坏预警输出增益值均稳定在0.75以上,虚警概率低于14.3%。展开更多
Drawing examination and approval is an important link in coal mine surveying. However, for some reasons, many problems existed in that. In the paper, the author sums up those problems found in the examination and appr...Drawing examination and approval is an important link in coal mine surveying. However, for some reasons, many problems existed in that. In the paper, the author sums up those problems found in the examination and approval of design drawing so as to draw attention to those problems, consequently, to ensure safe mine production and gaining higher economic profit展开更多
文摘为了提高电力通信光缆外力破坏的预警检测能力,提出基于TDOA(Time Difference of Arrival)技术的电力通信光缆外力破坏预警系统设计方法。采用多普勒频谱感知的方法,构建电力通信光缆外力破坏的参数识别模型;利用加权求和的方法,融合外力破坏参数;采用频谱感知算法优化TODA(Time Difference of Arrival),提取破坏预警信号特征,对预警信号进行频谱特征分解,实现破坏预警。仿真结果表明:采用该方法进行电力通信光缆外力破坏预警输出增益值均稳定在0.75以上,虚警概率低于14.3%。
文摘Drawing examination and approval is an important link in coal mine surveying. However, for some reasons, many problems existed in that. In the paper, the author sums up those problems found in the examination and approval of design drawing so as to draw attention to those problems, consequently, to ensure safe mine production and gaining higher economic profit
