Cross calibration of GF-4/PMS based on MODIS over Badain Jaran Desert

نویسندگان

چکیده

高分四号(GF-4ï¼‰æ˜¯ä¸­å›½é¦–é¢—é«˜åˆ†è¾¨çŽ‡é™æ­¢è½¨é“å ‰å­¦é¥æ„Ÿå«æ˜Ÿï¼Œæ­è½½äº†ä¸€å°å¯è§/ä¸­æ³¢çº¢å¤–å‡è§†ç›¸æœºï¼Œç”±äºŽç¼ºå°‘æ˜Ÿä¸Šå®šæ ‡ç³»ç»Ÿå¯¼è‡´æ— æ³•æä¾›é«˜é¢‘æ¬¡çš„æ˜Ÿä¸Šè¾å°„å®šæ ‡ç³»æ•°ã€‚ä¸ºäº†æ›´å¥½çš„å®žçŽ°GF-4/PMSä¼ æ„Ÿå™¨è¾å°„æ€§èƒ½ç›‘æµ‹å’Œæ•°æ®å®šé‡åŒ–åº”ç”¨ï¼Œæœ¬æ–‡é€‰æ‹©äº†å·´ä¸¹å‰æž—æ²™æ¼ å—ç«¯å‡åŒ€æ²™åœ°ï¼Œåˆ©ç”¨MODISä½œä¸ºå‚è€ƒä¼ æ„Ÿå™¨å¯¹GF-4/PMSå¯è§è¿‘çº¢å¤–æ³¢æ®µè¿›è¡Œäº¤å‰å®šæ ‡ã€‚ä¸ºå°½é‡å‡å°‘åœ°è¡¨ä¸å‡åŒ€æ€§é€ æˆçš„äº¤å‰å®šæ ‡è¯¯å·®ï¼Œä½¿ç”¨è¾ƒé«˜åˆ†è¾¨çŽ‡çš„å½±åƒï¼ˆLandsat 8/OLIï¼‰æœç´¢å·´ä¸¹å‰æž—æ²™æ¼ åœ°åŒºçš„å‡åŒ€åŒºåŸŸï¼Œç¡®å®šä¸ºäº¤å‰å®šæ ‡è¯•éªŒåŒºã€‚ä¸ºè¿›ä¸€æ­¥å‡å°‘é¥æ„Ÿå™¨æˆåƒè§’åº¦å’Œå¤§æ°”å˜åŒ–çš„å½±å“ï¼Œè¿›è¡Œäº†MODIS成像角与GF-4成像角角度差约束(小于20°)、成像时刻约束(小于2 hï¼‰ã€äº‘å’Œæˆåƒè´¨é‡é—®é¢˜ï¼Œå ±é€‰æ‹©2016年—2018年有效图像对13组,通过利用MODTRANæ¨¡æ‹Ÿè®¡ç®—äºŒè€ å ‰è°±åŒ¹é å› å­è¿›è€Œå®žçŽ°äº¤å‰å®šæ ‡ç³»æ•°è®¡ç®—ã€‚ç»“æžœè¡¨æ˜Žï¼šï¼ˆ1) æœ¬æ–‡è®¡ç®—çš„è¾å°„å®šæ ‡ç³»æ•°åœ¨æœ—ä¼¯ä½“å‡å®šå’ŒRoss-Liæ¨¡åž‹å‡å®šæƒ å†µä¸‹å ·æœ‰è¾ƒé«˜ä¸€è‡´æ€§ï¼Œå¿½ç•¥BRDFæ•ˆåº”æƒ å†µé€ æˆçš„è®¡ç®—è¯¯å·®åœ¨0.8%—4%ï¼Œå®šæ ‡ç»“æžœçš„ä¸ç¡®å®šåº¦åœ¨7.4%ä»¥å† ï¼›ï¼ˆ2) 2016年至2018å¹´GF-4/PMSé¥æ„Ÿå™¨è¾å°„æ€§èƒ½å‘ˆçŽ°ç¼“æ ¢ä¸‹é™ç‰¹å¾ï¼Œå¹´è¡°å‡çŽ‡å°äºŽ1%。本文的方法可以有效地提高GF-4/PMSçš„è¾å°„å®šæ ‡é¢‘çŽ‡å’Œå®šæ ‡ç²¾åº¦ï¼Œå®žçŽ°å¯¹GF-4/PMSä¼ æ„Ÿå™¨æ•´ä¸ªç”Ÿå‘½å‘¨æœŸçš„è¾å°„æ€§èƒ½ç›‘æµ‹ã€‚

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Water Loss Due to Increasing Planted Vegetation over the Badain Jaran Desert, China

Water resources play a vital role in ecosystem stability, human survival, and social development in drylands. Human activities, such as afforestation and irrigation, have had a large impact on the water cycle and vegetation in drylands over recent years. The Badain Jaran Desert (BJD) is one of the driest regions in China with increasing human activities, yet the connection between human managem...

متن کامل

Satellite-based estimates of groundwater depletion in the Badain Jaran Desert, China

Despite prevailing dry conditions, groundwater-fed lakes are found among the earth's tallest sand dunes in the Badain Jaran Desert, China. Indirect evidence suggests that some lakes are shrinking. However, relatively few studies have been carried out to assess the regional groundwater conditions and the fate of the lakes due to the remoteness and severity of the desert environment. Here we use ...

متن کامل

Local Circulation Maintains the Coexistence of Lake-dune Pattern in the Badain Jaran Desert

Previous studies proposed various hypotheses to the formation of the mega-dunes and water recharge of the lakes in the Badain Jaran Desert but left the coexistence of lake-dune pattern unsolved. This research found that the local circulation, generated from the differences of thermodynamic properties and the unique landscape settings between lakes and mega-dunes, can be applied to interpret the...

متن کامل

Radiometric Cross-Calibration of GF-4 PMS Sensor Based on Assimilation of Landsat-8 OLI Images

Earth observation data obtained from remote sensors must undergo radiometric calibration before use in quantitative applications. However, the large view angles of the panchromatic multispectral sensor (PMS) aboard the GF-4 satellite pose challenges for cross-calibration due to the effects of atmospheric radiation transfer and the bidirectional reflectance distribution function (BRDF). To addre...

متن کامل

Radiometric Cross-Calibration of GF-4 in Multispectral Bands

The GaoFen-4 (GF-4), launched at the end of December 2015, is China’s first high-resolution geostationary optical satellite. A panchromatic and multispectral sensor (PMS) is onboard the GF-4 satellite. Unfortunately, the GF-4 has no onboard calibration assembly, so on-orbit radiometric calibration is required. Like the charge-coupled device (CCD) onboard HuanJing-1 (HJ) or the wide field of vie...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Journal of remote sensing

سال: 2023

ISSN: ['1007-4619', '2095-9494']

DOI: https://doi.org/10.11834/jrs.20221774