Litcius/Paper detail

Time-series absolute radiometric calibration and trend analysis of the wide swath sensor onboard GF-6 satellite with automatic radiometric calibration site

LIU Yaokai, Lingling MA, Renfei WANG, QingChuan ZHENG, Peilan SONG, Li Wan, Yongguang Zhao, Ning Wang, Caixia Gao, Xiaoxin HOU, Jin Jin

2023National Remote Sensing Bulletin10 citationsDOIOpen Access PDF

Abstract

å«æ˜Ÿé¥æ„Ÿè½½è·åœ¨è½¨ç»å¯¹è¾å°„å®šæ ‡å¯¹ä¿è¯ä¸åŒæ¥æºäº§å“çš„è¾å°„ä¸€è‡´æ€§å’Œæå‡é«˜åˆ†å ±æ€§äº§å“åæ¼”ç²¾åº¦è‡³å ³é‡è¦ã€‚ä¼ ç»ŸåŸºäºŽäººå·¥åŒæ­¥æµ‹é‡çš„åœºåœ°å®šæ ‡æ–¹æ³•ç”±äºŽå—åˆ°å«æ˜Ÿè¿‡å¢ƒæ—¶åˆ»æˆåƒæ¡ä»¶ã€åœ°è¡¨åŠå¤§æ°”æµ‹é‡æ¡ä»¶ç­‰é™åˆ¶ï¼Œéš¾ä»¥æ»¡è¶³å‡†ç¡®æ ¡æ­£é¥æ„Ÿè½½è·è‡ªèº«è¾å°„æ€§èƒ½åœ¨ç”Ÿå‘½å‘¨æœŸå† å˜åŒ–çš„éœ€æ±‚ã€‚æœ¬æ–‡é’ˆå¯¹å›½äº§é«˜åˆ†å ­å·å®½å¹ è½½è·ï¼ˆGF-6/WFVï¼‰å¤§è§’åº¦è§‚æµ‹çš„ç‰¹ç‚¹ï¼Œæå‡ºäº†åˆ©ç”¨è‡ªåŠ¨è¾å°„å®šæ ‡åœºçš„GF-6/WFVè½½è·åœ¨è½¨æ—¶åºç»å¯¹è¾å°„å®šæ ‡æ–¹æ³•ï¼ŒåŸºäºŽè¯¥æ–¹æ³•å¯å¾—åˆ°è½½è·å¯é‡åŒ–çš„æ—¶åºç»å¯¹è¾å°„å®šæ ‡ç»“æžœåŠå ¶ä¸ç¡®å®šåº¦ï¼Œå¹¶ä¸”é€šè¿‡æ˜¾è‘—æå‡åœ¨è½¨å®šæ ‡é¢‘æ¬¡å®žçŽ°å«æ˜Ÿè½½è·è¾å°„æ€§èƒ½çš„è¶‹åŠ¿å˜åŒ–æŒç»­è·Ÿè¸ªã€‚åŸºäºŽè¯¥æ–¹æ³•å®žçŽ°äº†2019å¹´8月至2021å¹´10æœˆæœŸé—´è¿‡å¢ƒè‡ªåŠ¨è¾å°„å®šæ ‡åœº41频次的GF-6/WFVè‡ªåŠ¨è¾å°„å®šæ ‡ä¸”å®šæ ‡ç»“æžœçš„ä¸ç¡®å®šåº¦ä¼˜äºŽ5%(第7æ³¢æ®µé™¤å¤–ï¼‰ï¼Œå¯¹æ—¶åºå®šæ ‡ç»“æžœè¿›è¡Œè¶‹åŠ¿åˆ†æžå¾—åˆ°GF-6/WFVè½½è·å„æ³¢æ®µè¾å°„å®šæ ‡ç³»æ•°å¹´å˜åŒ–åœ¨1.10%—4.59%;此外,以高精度在轨卫星载荷MODIS和Sentinel-2/MSI为参考的GF-6/WFV载荷第1至第4波段交叉验证结果的相对差异绝对平均值在2.12%—6.09%。说明本文方法可实现GF-6/WFVè½½è·çš„æ—¶åºåœ¨è½¨ç»å¯¹è¾å°„å®šæ ‡å’Œå ¨ç”Ÿå‘½å‘¨æœŸè¾å°„æ€§èƒ½çš„è¶‹åŠ¿å˜åŒ–ç›‘æµ‹ï¼Œæœ‰æ•ˆæ”¯æ’‘å›½äº§é«˜åˆ†å ±æ€§é¥æ„Ÿäº§å“ç”Ÿäº§å’Œæå‡å›½äº§é¥æ„Ÿæ•°æ®å®šé‡åŒ–åº”ç”¨æ°´å¹³ã€‚

Topics & Concepts

SatelliteRemote sensingCalibrationGF(2)Radiometric datingSeries (stratigraphy)Radiometric calibrationEnvironmental sciencePhysicsMathematicsGeologyAstronomyStatisticsFinite fieldCombinatoricsPaleontologyCalibration and Measurement TechniquesGeophysics and Gravity MeasurementsInertial Sensor and Navigation