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基于雷达字建模的多功能雷达工作模式识别 被引量:8
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作者 贠洁 孙闽红 官友廉 《杭州电子科技大学学报(自然科学版)》 2020年第6期19-25,共7页
在多功能雷达脉冲信号出现漏脉冲和虚假脉冲的情况下,错误脉冲导致雷达工作模式识别性能不佳,为此,提出一种雷达字建模的改进方法,并运用数据挖掘中的Apriori关联算法实现对雷达工作模式的准确识别。在雷达辐射源出现漏脉冲和虚假脉冲... 在多功能雷达脉冲信号出现漏脉冲和虚假脉冲的情况下,错误脉冲导致雷达工作模式识别性能不佳,为此,提出一种雷达字建模的改进方法,并运用数据挖掘中的Apriori关联算法实现对雷达工作模式的准确识别。在雷达辐射源出现漏脉冲和虚假脉冲的情况下,一方面通过增加4个参数来提高识别性能,另一方面通过对错误脉冲参数进行校正,提高雷达字建模的准确率。仿真结果表明,在漏脉冲率和虚假脉冲率为40%时,改进方法的雷达字模型准确率分别提高了8%和6%,对雷达工作模式识别的平均置信度提高了6%。 展开更多
关键词 多功能雷达 工作 雷达字建模 APRIORI算法
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Bibliometric Analysis of Global Research Progress on Coastal Flooding 1995–2016 被引量:2
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作者 GAO Chao RUAN Tian 《Chinese Geographical Science》 SCIE CSCD 2018年第6期998-1008,共11页
Global research progress on coastal flooding was studied using a bibliometric evaluation of publications listed in the Web of Science extended scientific citation index. There was substantial growth in coastal floodin... Global research progress on coastal flooding was studied using a bibliometric evaluation of publications listed in the Web of Science extended scientific citation index. There was substantial growth in coastal flooding research output, with increasing publications, a higher collaboration index, and more references during the 1995–2016 period. The USA has taken a dominant position in coastal flooding research, with the US Geological Survey leading the publications ranking. Research collaborations at institutional scales have become more important than those at global scales. International collaborative publications consistently drew more citations than those from a single country. Furthermore, coastal flooding research included combinations of multi-disciplinary categories, including ‘Geology' and ‘Environmental Sciences & Ecology'. The most important coastal flooding research sites were wetlands and estuaries. While numerical modeling and 3 S(Remote sensing, RS; Geography information systems, GIS; Global positioning systems, GPS) technology were the most commonly used methods for studying coastal flooding, Lidar gained in popularity. The vulnerability and adaptation of coastal environments, their resilience after flooding, and ecosystem services function showed increases in interest. 展开更多
关键词 coastal flood scientific outputs bibliometric analysis research trends Web of Science
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