Validations of the HY-1C COCTS remote sensing reflectance products in coastal waters

نویسندگان

چکیده

中国HY-1C卫星水色水温扫描仪(COCTS)从2018å¹´9æœˆå‘å°„è‡³ä»Šå·²ç§¯ç´¯äº†å¤§é‡çš„å ¨çƒè§‚æµ‹æ•°æ®ï¼Œæœ¬æ–‡åˆ©ç”¨AERONET-OC实测数据集对COCTS近海水体遥感反射率(Rrsï¼‰äº§å“è¿›è¡Œäº†çœŸå®žæ€§æ£€éªŒã€‚æœ¬æ–‡å¯¹å®žæµ‹å ‰è°±æ•°æ®é›†è¿›è¡Œå½’ä¸€åŒ–å¤„ç†ï¼ŒæŒ‰å ‰è°±ç‰¹å¾åˆ†ä¸ºAï¼ˆæ¸ æ´ï¼‰ã€Bï¼ˆæ¯”è¾ƒæ¸ æ´ï¼‰ã€C(轻微浑浊)、D(比较浑浊)这4ç§å ‰å­¦æ°´ä½“ç±»åž‹ï¼Œå¯¹COCTS Rrs产品在这4类水体的精度进行评价。结果表明:COCTS反演Rrs在A、B两种水体类型中存在轻微高估(平均绝对百分比误差APD(Average absolute Percent Difference)分别为38.79%、44.44%),在C类水体轻微低估(APD=40.85%),而在D类水体显著低估(APD=47.14%)。COCTS不同波段Rrs产品在4ç±»æ°´ä½“çš„ç²¾åº¦äº¦å­˜åœ¨å·®å¼‚ï¼Œå ¶ä¸­412 nm、443 nm波段在A类水体中和实测数据一致性相对较好(APD均小于30%);520 nm、565 nm波段在C、D两类水体中和实测数据一致性相对较好(APD均小于30%);670 nm波段在4种水体均呈现显著低估。由于AERONET-OC波段和COCTSå­˜åœ¨å·®å¼‚ï¼Œå¯èƒ½ä¼šå¯¼è‡´è¯„ä¼°è¯¯å·®å­˜åœ¨é«˜ä¼°ï¼Œæœªæ¥éœ€è¦ä½¿ç”¨è¿žç»­å ‰è°±çš„å®žæµ‹æ•°æ®è¿›ä¸€æ­¥è¯„ä»·COCTS产品精度。

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ژورنال

عنوان ژورنال: Journal of remote sensing

سال: 2023

ISSN: ['1007-4619', '2095-9494']

DOI: https://doi.org/10.11834/jrs.20235004