A waveform matching-based method of improving laser footprintgeolocation for GaoFen-7spaceborne laser altimeter inmountainous areas br

被引：0

作者：

Wu, Yu ^{[1
]}

Wang, Heng ^{[1
]}

Han, Qi-Jin ^{[2
]}

Long, Xiao-Xiang ^{[2
]}

Ma, Yue ^{[1
]}

Li, Qing-Peng ^{[2
]}

Zhao, Pu-Fan ^{[1
]}

Li, Song ^{[1
]}

机构：

[1] Wuhan Univ, Sch Elect Informat, Wuhan 430072, Peoples R China

[2] China Ctr Resources Satellite Data & Applicat, Beijing 100094, Peoples R China

来源：

JOURNAL OF INFRARED AND MILLIMETER WAVES | 2022年 / 41卷 / 06期

关键词：

Gaofen-7; satellite; spaceborne laser altimeter; pointing angle; waveform matching; correlation coefficient combined treatment;

D O I：

10.11972/j.issn.1001-9014.2022.06.015

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

This paper proposed a geolocation method for laser footprints based on the waveform matching.Specifical-ly?for a single laser footprint?the simulated waveform based on airborne lidar point cloud data as prior measurementswas matched with the captured waveform of the Gaofen-7SLA.Within a laser track?the correlation coefficient of thematching results in successive footprints was calculated to further estimate the laser pointing and ranging informationand re-geolocate the laser footprints in mountainous areas.A study area(the Utah State in USA?with local airborne li-dar data was selected to verify the proposed method.With the mean surface slope of approximately20 degrees?the elevationaccuracy of GaoFen-7's laser footprints were improved from(2.45 +/- 2.93?m to(0.27 +/- 0.61?m?which proved the ef-fectiveness of the proposed method.

引用

页码：1051 / 1061

页数：11

共 21 条

[1] CAO Hai-Yi, 2020, SATELLITE APPL, P11
[2] The GEDI Simulator: A Large-Footprint Waveform Lidar Simulator for Calibration and Validation of Spaceborne Missions
Hancock, Steven
Armston, John
Hofton, Michelle
Sun, Xiaoli
Tang, Hao
Duncanson, Laura, I
Kellner, James R.
Dubayah, Ralph
[J]. EARTH AND SPACE SCIENCE, 2019, 6 (02): : 294 - 310
[3] Kaufmann J, 2019, LIDAR BASE SPECIFICA, V10, P5
[4] LI Guo-Yuan, 2018, EARTH OBSERVING SATE
[5] [李国元 Li Guoyuan], 2022, [测绘学报, Acta Geodetica et Cartographica Sinica], V51, P401
[6] Vertical Accuracy Assessment of ZY-3 Digital Surface Model using ICESat/GLAS Laser Altimeter Data
Li, Guoyuan
Tang, Xinming
Yuan, Xiaoqi
Zhou, Ping
Hu, Fen
[J]. ISPRS HANNOVER WORKSHOP: HRIGI 17 - CMRT 17 - ISA 17 - EUROCOW 17, 2017, 42-1 (W1): : 23 - 28
[7] LI Shao-Ning, 2017, RES GEOMETRIC CALIBR
[8] ICESat-2 Pointing Calibration and Geolocation Performance
Luthcke, S. B.
Thomas, T. C.
Pennington, T. A.
Rebold, T. W.
Nicholas, J. B.
Rowlands, D. D.
Gardner, A. S.
Bae, S.
[J]. EARTH AND SPACE SCIENCE, 2021, 8 (03)
[9] Spaceborne laser-altimeter-pointing bias calibration from range residual analysis
Luthcke, SB
Rowlands, DD
McCarthy, JJ
Pavlis, DE
Stoneking, E
[J]. JOURNAL OF SPACECRAFT AND ROCKETS, 2000, 37 (03) : 374 - 384
[10] Overview of the ICESat Mission
Schutz, BE
Zwally, HJ
Shuman, CA
Hancock, D
DiMarzio, JP
[J]. GEOPHYSICAL RESEARCH LETTERS, 2005, 32 (21) : 1 - 4

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