Cloud removal and optimal threshold selection of MODIS NDSI production
Journal of remote sensing(2022)
摘要
å½ä¸åå·®å¼ç§¯éªææ°NDSIï¼Normalized Difference Snow Indexï¼æ¯ç§¯éªè¯å«ä¸æ常ç¨çææ°ï¼ä½ç±äºäºçé®æ¡éå¶äºMODIS NDSI产åçåºç¨ãæ¬ææåºäºä¸ç§åºäºé»è¿ç¸ä¼¼åå çMODIS NDSI产åå»äºæ¹æ³ï¼å¹¶åæäºæ äºNDSIåºåå¨ç§¯éªè¯å«ä¸çæä¼éå¼ã对äºNDSIå½±åä¸æä¸ä¸ªäºé®æ¡çç®æ åå ï¼éåç®æ åå çn个é»è¿ç¸ä¼¼åå è¿è¡å æå¹³åæ¥é¢æµè¯¥ç®æ åå çNDSIå¼ã以ä¸å积éªåº2017å¹´10æ1æ¥â2018å¹´4æ31æ¥ä¸ä¸ªç§¯éªå£çNDSI产åè¿è¡å»äºå®éªï¼å¹¶éç¨âäºå设âçæ¹æ³è¿è¡äºæ£éªï¼æé¢æµå°çäºè¦çåå NDSIå¼ä¸å®é å¼çç¸å ³ç³»æ°è¾¾å°0.95ï¼åæ¹æ ¹è¯¯å·®ä¸º0.08ãå°éæ¥æ äºNDSIåºåä¸æ°è±¡ç«ç¹æµéçéªæ·±åºåè¿è¡å¯¹æ¯ï¼äºè å ·æå¾å¥½çä¸è´æ§ãæ°è±¡ç«ç¹çæµééªæ·±å¤§äºçäº1 cmæ¶ï¼åå®è¯¥ç«ç¹æå¨çåå 为æéªåå ï¼å¹¶ä»¥æ¤ä¸ºçå¼ï¼åææ äºNDSIåºåå¨ç§¯éªè¯å«ä¸çæä¼éå¼ãç»æ表æï¼é森æå°åºNDSIéå¼ä¸º0.1æ¶ç§¯éªæåç精度æé«ï¼å¯ä»¥è¾¾å°95.6%ï¼æ£®æå°åºçNDSIæä¼éå¼ä¸º0ï¼å¯¹åºç积éªæå精度为93.5%ã
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cloud removal,optimal threshold selection
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