利用ICESat-2 ATLAS&JL-1反演输电线走廊附近森林冠层高度

doi:10.3969/j.issn.0255-8297.2022.05.010

应用科学学报 ›› 2022, Vol. 40 ›› Issue (5): 809-819.doi: 10.3969/j.issn.0255-8297.2022.05.010

利用ICESat-2 ATLAS&JL-1反演输电线走廊附近森林冠层高度

蔺昊宇¹, 巫兆聪¹, 孙小虎²

1. 武汉大学遥感信息工程学院, 湖北武汉 430079;
2. 国网经济技术研究院有限公司, 北京 102209

收稿日期:2021-06-11 出版日期:2022-09-30 发布日期:2022-09-30
通信作者: 巫兆聪,教授,研究方向为高空间分辨率遥感影像信息提取、定量遥感、对地观测系统工程与传感器仿真、遥感影像智能处理等。E-mail:zcwoo@whu.edu.cn E-mail:zcwoo@whu.edu.cn
基金资助:
国网科技项目（No.5700-202019162A-0-0-00）资助

Inversion of Forest Canopy Height in Transmission Line Corridor Using ICESat-2 ATLAS & JL-1

LIN Haoyu¹, WU Zhaocong¹, SUN Xiaohu²

1. School of Remote Sensing and Information Engineering, Wuhan University, Wuhan 430079, Hubei, China;
2. State Grid Economic and Technology Research Institute Co., Ltd., Beijing 102209, China

Received:2021-06-11 Online:2022-09-30 Published:2022-09-30

摘要/Abstract

摘要： 针对ICESat-2 ATL08产品含有较多噪声光子和树高粗差的问题，设计了利用光子数量、光束能量和地表覆盖等特性进行光子滤波和粗差剔除的方法；研究了从高分辨率多光谱数据各波段反射参数和提取的NDVI、RVI、SAVI、MSAVI、PVI植被指数与激光测高数据之间的相关关系，对比分析了多元回归和随机森林模型反演的有效性和精度。结果表明，随机森林模型可以获得较高的树高反演精度，以浙江省杭州市临安区输电走廊进行的反演实验获得了RMSE=2.84 m的结果，结合电力数据制作的树高隐患图可以为输电设施安全隐患排查提供辅助决策。

关键词: ICESat-2, ATL08, 吉林一号影像, 输电走廊, 森林冠层高度

Abstract: Aiming at the problem that ICESat-2 ATL08 product contains a lot of noise photons and gross errors of tree height, a method of photon filtering and gross errors elimination was designed by using a series of characteristics such as photon number, beam energy and ground coverage; The correlations of reflection parameters in each band with NDVI, RVI, SAVI, MSAVI, PVI vegetation indexes extracted from high-resolution multispectral data and with laser altimetry data were studied, and the effectiveness and accuracy of multiple regression and random forest model inversion were compared and analyzed. Study results showed that the random forest model can obtain higher inversion accuracy of tree height. The inversion experiment carried out in the transmission corridor of Lin' an District, Hangzhou City, Zhejiang Province obtained the result of RMSE=2.84 m. The tree height hidden danger map produced by combining the power data can provide auxiliary decision-making for the hidden danger investigation of transmission facilities.

Key words: ICESat-2, ATL08, JL-1, transmission corridor, forest canopy height

中图分类号:

蔺昊宇, 巫兆聪, 孙小虎. 利用ICESat-2 ATLAS&JL-1反演输电线走廊附近森林冠层高度[J]. 应用科学学报, 2022, 40(5): 809-819.

LIN Haoyu, WU Zhaocong, SUN Xiaohu. Inversion of Forest Canopy Height in Transmission Line Corridor Using ICESat-2 ATLAS & JL-1[J]. Journal of Applied Sciences, 2022, 40(5): 809-819.

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利用ICESat-2 ATLAS&JL-1反演输电线走廊附近森林冠层高度

Inversion of Forest Canopy Height in Transmission Line Corridor Using ICESat-2 ATLAS & JL-1

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