{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,11]],"date-time":"2026-04-11T00:52:02Z","timestamp":1775868722992,"version":"3.50.1"},"reference-count":20,"publisher":"MDPI AG","issue":"1","license":[{"start":{"date-parts":[[2022,12,23]],"date-time":"2022-12-23T00:00:00Z","timestamp":1671753600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Innovation Funds of Equipment Pre-Research","award":["JZX7Y20190253036001"],"award-info":[{"award-number":["JZX7Y20190253036001"]}]},{"name":"Innovation Funds of Equipment Pre-Research","award":["HXYYGLDJZSY22"],"award-info":[{"award-number":["HXYYGLDJZSY22"]}]},{"name":"Pre-Research Project of China Spacesat Company Limited","award":["JZX7Y20190253036001"],"award-info":[{"award-number":["JZX7Y20190253036001"]}]},{"name":"Pre-Research Project of China Spacesat Company Limited","award":["HXYYGLDJZSY22"],"award-info":[{"award-number":["HXYYGLDJZSY22"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Remote Sensing"],"abstract":"<jats:p>Non-imaging radar can achieve the detection and localization of moving targets, but it faces difficulties in the classification of targets. Aiming for the application of moving target classification by low\/medium resolution non-imaging radar, this paper proposes a novel feature extraction method, based on the statistical characteristics of echo amplitude with the L-band fully polarimetric radar. A feature plane, composed of the 3rd-order central moment (skewness) and 4th-order central moment (kurtosis) as the statistical characteristics of the echo envelope, is established. In addition, two types of moving targets, pedestrians and non-motorized vehicles, are able to be effectively distinguished according to whether the echo signals of different polarizations have overlapping areas in the feature plane. The L-band fully polarimetric radar has been developed and field experiments have been conducted. The experimental results verify that the kurtosis and skewness of the fully polarimetric echo amplitude of the pedestrians are very close, and there is an overlapping area in the feature plane, while the statistical characteristics of the fully polarimetric echo signal of non-motor vehicles are different, and there is no overlapping area in the feature plane. This proposed feature extraction method has the advantage of being simple and robust, compared to the traditional imaging approach.<\/jats:p>","DOI":"10.3390\/rs15010080","type":"journal-article","created":{"date-parts":[[2022,12,27]],"date-time":"2022-12-27T07:30:06Z","timestamp":1672126206000},"page":"80","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":5,"title":["Feature Extraction for Moving Targets Based on the Statistical Characteristics of Echo Amplitude with the L-Band Fully Polarimetric Radar"],"prefix":"10.3390","volume":"15","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-4395-0300","authenticated-orcid":false,"given":"Chuang","family":"Zhang","sequence":"first","affiliation":[{"name":"State Key Laboratory of Space-Ground Integrated Information Technology, Beijing Institute of Satellite Information Engineering, Beijing 100095, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7336-548X","authenticated-orcid":false,"given":"Yaxin","family":"Mu","sequence":"additional","affiliation":[{"name":"School of Information and Communication Engineering, Beijing Information Science and Technology University, Beijing 100101, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3152-1568","authenticated-orcid":false,"given":"Zhenghuan","family":"Xia","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Space-Ground Integrated Information Technology, Beijing Institute of Satellite Information Engineering, Beijing 100095, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Shichao","family":"Jin","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Space-Ground Integrated Information Technology, Beijing Institute of Satellite Information Engineering, Beijing 100095, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Fuzhan","family":"Yue","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Space-Ground Integrated Information Technology, Beijing Institute of Satellite Information Engineering, Beijing 100095, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4090-1703","authenticated-orcid":false,"given":"Xin","family":"Liu","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Space-Ground Integrated Information Technology, Beijing Institute of Satellite Information Engineering, Beijing 100095, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Lanqing","family":"Zhang","sequence":"additional","affiliation":[{"name":"China Spacesat Company Limited, Beijing 100095, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Zhixin","family":"Tian","sequence":"additional","affiliation":[{"name":"Beijing Institute of Spacecraft System Engineering, China Academy of Space Technology, Beijing 100095, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Zongqiang","family":"Liu","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Space-Ground Integrated Information Technology, Beijing Institute of Satellite Information Engineering, Beijing 100095, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yao","family":"Zhang","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Space-Ground Integrated Information Technology, Beijing Institute of Satellite Information Engineering, Beijing 100095, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Wenning","family":"Gao","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Space-Ground Integrated Information Technology, Beijing Institute of Satellite Information Engineering, Beijing 100095, 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China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2022,12,23]]},"reference":[{"key":"ref_1","first-page":"3097","article-title":"CW and pulse\u2013Doppler radar processing based on FPGA for human sensing applications","volume":"51","author":"Wang","year":"2012","journal-title":"IEEE Trans. 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