Performance of ICESat-2 ATL08 product on the estimation of forest height by referencing to small footprint LiDAR data
نویسندگان
چکیده
ç±ç¾å½å®èªå±ï¼NASAï¼ç å¶çæ°ä¸ä»£å°ãäºåéå°é«ç¨å«æï¼ICESat-2ï¼äº2018-09-15åå°æåï¼å ¶æè½½çå è¿å°å½¢æ¿å æµé«ç³»ç»ï¼ATLASï¼éç¨å¾®èå²å¤æ³¢æå å计æ°æ¿å é·è¾¾ææ¯ï¼å¯ç¨äºå ¨çé«ç¨çº¿éæ ·æ°æ®çè·åãç®åå ¬å¼åå¸äº9ç§æ°æ®äº§åï¼å ¶ä¸å æ¬æ¤è¢«å å±é«åº¦åå°è¡¨é«ç¨æ°æ®äº§åï¼ATL08ï¼ï¼ä¸ºå ¨ç森æç»æåæ°çä¼°ç®æä¾äºæ°çå¥æºãæ¬æ以ç¾å½å®¾å¤æ³å°¼äºå·æ¯å¥å¾·å¿åå°åº¦å°¼è¥¿äºè¥¿å éæ¼ä¸¹åæé¦ä¸ºç 究åºï¼å¨æ¸©å¸¦æ£®æåç带é¨æ两ç§ä¸åççæç³»ç»ç«å°æ¡ä»¶ä¸ï¼å¯¹ ICESat-2çATL08æ°æ®äº§åç¨äºæ£®æé«åº¦ä¼°ç®çææè¿è¡è¯ä»·ãé¦å 建ç«äºå°å½¢é«ç¨æ°æ®äº§åï¼ATL03ï¼ä¸ATL08æ°æ®äº§åçå ³èè§åï¼ä»¥è·ååå«è®°å½å¨è¿ä¸¤ç§äº§åä¸çå å空é´åå¸ä¿¡æ¯åå类信æ¯ï¼è¿è以æºè½½å°å ææ¿å é·è¾¾æ°æ®ä¸ºåèï¼å¯¹ATL08æ°æ®äº§åçå ååç±»å¯é æ§åå ¶ç¨äºæ£®æé«åº¦ä¼°ç®çåç¡®æ§è¿è¡äºåæè¯ä»·ãç»æ表æï¼ï¼1ï¼å¨æ¸©å¸¦æ£®ææ åµä¸ï¼ATL08æ°æ®äº§åæä¾çå¹³åå å±é«åº¦åæ大å å±é«åº¦ä¸åèæ°æ®çç¸å ³ç³»æ°ï¼R²ï¼åå«ä¸º0.54å0.61ï¼ç¸å¯¹è¯¯å·®åå«ä¸º16.78%å10.71%ï¼è¡¨æATL08æ°æ®äº§åçå ååç±»ç»æè½å¤ç¨äºå»ç»æ£®æå å±ç»æåæä¸å°å½¢ï¼ï¼2ï¼å¨ç带é¨ææ åµä¸ï¼å°è¾¾å°é¢çå åæ°éç¸è¾äºæ¸©å¸¦æ£®æææ¾åå°ï¼å°é¢å åç±»åè¯å«çå¯é æ§ä½ï¼ATL08æ°æ®äº§åæä¾çå¹³åå ³ç³»æ°ï¼R²ï¼åå«ä¸º0.21å0.19ï¼ï¼3ï¼æ£®æè¦ç度çå¢å¤§ä¼å¯¼è´ATL08计ç®çå å±é«åº¦è¯¯å·®å¢å¤§ï¼ç带é¨æå¹³åå å±é«åº¦ç误差éçå¡åº¦å¢å¤§æå¢å¤§è¶å¿ï¼å¨å¡åº¦ä¸º0°â10°ã10°â20°å20°â30Â°å ±3ç»æ åµä¸ï¼è¯¯å·®åå«ä¸º5.7 mã6.6 må9.3 mãå æ¤ï¼å¨é«æ£®æè¦ç度æ åµä¸ï¼ç°æçATL08æ°æ®äº§åé¾ä»¥ç´æ¥ç¨äºæ£®æé«åº¦çæåã
منابع مشابه
a study on insurer solvency by panel data model: the case of iranian insurance market
the aim of this thesis is an approach for assessing insurer’s solvency for iranian insurance companies. we use of economic data with both time series and cross-sectional variation, thus by using the panel data model will survey the insurer solvency.
the effects of planning on accuracy and complexity of iranian efl students’ written narrative task performance
this study compared the different effects of form-focused guided planning vs. meaning-focused guided planning on iranian pre-intermediate students’ task performance. the study lasted for three weeks and concentrated on eight english structures. forty five pre-intermediate iranian students were randomly assigned to three groups of guided planning focus-on-form group (gpfg), guided planning focus...
15 صفحه اولthe effects of time planning and task complexity on accuracy of narrative task performance
هدف اصلی این تحقیق بررسی تاثیر برنامه ریزی زمانی، هم چنین افزایش میزان پیچیدگی تکالیف در نظر گرفته شده بصورت همزمان، بر دقت و صحت و پیچیدگی عملکرد نوشتاری زبان آموزان می باشد. بدین منظور، 50 نفر از دانش آموزان دختر در رده ی سنی 16 الی 18 سال به عنوان شرکت کنندگان در این زمینه ی تحقیق در نظر گرفته شدند و به دو گروه آزمایشی و کنترل بصورت اتفاقی تقسیم شدند. اعضای گروه آزمایشی هر دو تکلیف ساده و پی...
Small-footprint lidar estimation of sub-canopy elevation and tree height in a tropical rain forest landscape
Meso-scale digital terrain models (DTMs) and canopy-height estimates, or digital canopy models (DCMs), are two lidar products that have immense potential for research in tropical rain forest (TRF) ecology and management. In this study, we used a small-footprint lidar sensor (airborne laser scanner, ALS) to estimate sub-canopy elevation and canopy height in an evergreen tropical rain forest. A f...
متن کاملCanopy Height Estimation in French Guiana with LiDAR ICESat/GLAS Data Using Principal Component Analysis and Random Forest Regressions
Estimating forest canopy height from large-footprint satellite LiDAR waveforms is challenging given the complex interaction between LiDAR waveforms, terrain, and vegetation, especially in dense tropical and equatorial forests. In this study, canopy height in French Guiana was estimated using multiple linear regression models and the Random Forest technique (RF). This analysis was either based o...
متن کاملذخیره 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: 2021
ISSN: ['1007-4619', '2095-9494']
DOI: https://doi.org/10.11834/jrs.20219449