{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,11,28]],"date-time":"2025-11-28T17:26:39Z","timestamp":1764350799759,"version":"build-2065373602"},"reference-count":51,"publisher":"MDPI AG","issue":"2","license":[{"start":{"date-parts":[[2023,1,8]],"date-time":"2023-01-08T00:00:00Z","timestamp":1673136000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Aerospace Science and Technology Innovation Application Research Project","award":["E23Y0H555S1","30-Y20A010-9007-17\/18)","E13Y0J31601"],"award-info":[{"award-number":["E23Y0H555S1","30-Y20A010-9007-17\/18)","E13Y0J31601"]}]},{"name":"China High-resolution Earth Observation System","award":["E23Y0H555S1","30-Y20A010-9007-17\/18)","E13Y0J31601"],"award-info":[{"award-number":["E23Y0H555S1","30-Y20A010-9007-17\/18)","E13Y0J31601"]}]},{"name":"China Center for Resource Satellite Data and Applications Project","award":["E23Y0H555S1","30-Y20A010-9007-17\/18)","E13Y0J31601"],"award-info":[{"award-number":["E23Y0H555S1","30-Y20A010-9007-17\/18)","E13Y0J31601"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Remote Sensing"],"abstract":"<jats:p>To meet the demand for the aerosol detection of single-angle and multi-band polarization instrument containing short-wave infrared bands, an inversion algorithm that makes full use of multi-band intensity and polarization information is proposed based on optimal estimation theory. This method uses the polarization information in the short-wave infrared band to perform surface and atmosphere decoupling without a prior information on the surface. This obtains the initial value of the aerosol, and then it uses the scalar information to obtain the final result. Moreover, the multi-band information of the instrument is used for decoupling the surface and atmospheric information, which avoids the inversion error caused by the untimely update of the surface reflectance database and the error of spatio-temporal matching. The measured data of the Particulate Observing Scanning Polarimeter (POSP) are used to test the proposed algorithm. Firstly, to verify the effectiveness of the algorithm under different surface conditions, four regions with large geographical differences (Beijing, Hefei, Baotou, and Taiwan) are selected for aerosol optical depth (AOD) inversion, and they are compared with the aerosol robotic network (AERONET) products of the nearby stations. The validation against the AERONET products produces high correlation coefficients of 0.982, 0.986, 0.718, and 0.989, respectively, which verifies the effectiveness of the algorithm in different regions. Further, we analyzed the effectiveness of the proposed algorithm under different pollution conditions. Regions with AOD &gt;0.7 and AOD &lt; 0.7 are screened by using the AOD products of the Moderate-Resolution Imaging Spectroradiomete (MODIS), and the AOD of the corresponding region is inverted using POSP data. It was found to be spatially consistent with the MODIS products. The correlation coefficient and root mean square error (RMSE) in the AOD high region were 0.802 and 0.217, respectively, and 0.944 and 0.022 in the AOD low region, respectively, which verified the effectiveness of the proposed algorithm under different pollution conditions.<\/jats:p>","DOI":"10.3390\/rs15020385","type":"journal-article","created":{"date-parts":[[2023,1,9]],"date-time":"2023-01-09T04:47:08Z","timestamp":1673239628000},"page":"385","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":6,"title":["Aerosol Retrieval Study from a Particulate Observing Scanning Polarimeter Onboard Gao-Fen 5B without Prior Surface Knowledge, Based on the Optimal Estimation Method"],"prefix":"10.3390","volume":"15","author":[{"given":"Yizhe","family":"Fan","sequence":"first","affiliation":[{"name":"Key Laboratory of General Optical Calibration and Characterization Technology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China"},{"name":"Science Island Branch of Graduate School, University of Science and Technology of China, Hefei 230026, China"}]},{"given":"Xiaobing","family":"Sun","sequence":"additional","affiliation":[{"name":"Key Laboratory of General Optical Calibration and Characterization Technology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China"},{"name":"Chief Studio of Agricultural Industry in Hefei, Hefei 230031, China"}]},{"given":"Rufang","family":"Ti","sequence":"additional","affiliation":[{"name":"Key Laboratory of General Optical Calibration and Characterization Technology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China"}]},{"given":"Honglian","family":"Huang","sequence":"additional","affiliation":[{"name":"Key Laboratory of General Optical Calibration and Characterization Technology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China"},{"name":"Chief Studio of Agricultural Industry in Hefei, Hefei 230031, China"}]},{"given":"Xiao","family":"Liu","sequence":"additional","affiliation":[{"name":"Key Laboratory of General Optical Calibration and Characterization Technology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China"},{"name":"Chief Studio of Agricultural Industry in Hefei, Hefei 230031, China"}]},{"given":"Haixiao","family":"Yu","sequence":"additional","affiliation":[{"name":"Key Laboratory of General Optical Calibration and Characterization Technology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China"},{"name":"Science Island Branch of Graduate School, University of Science and Technology of China, Hefei 230026, China"}]}],"member":"1968","published-online":{"date-parts":[[2023,1,8]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"26117","DOI":"10.1029\/95JD02531","article-title":"General circulation model assessment of the sensitivity of direct climate forcing by anthropogenic sulfate aerosols to aerosol size and chemistry","volume":"100","author":"Boucher","year":"1995","journal-title":"J. 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