浏览全部资源
扫码关注微信
纸质出版日期： 2022-03-07 ，
扫 描 看 全 文
杨雄丹，王佩贤，李国元，陈继溢，左志强，谢栋平，杨超.2022.星载激光光斑影像特征参数提取与分析.遥感学报，26（3）： 555-567
Yang X D，Wang P X，Li G Y，Chen J Y，Zuo Z Q，Xie D P and Yang C. 2022. Extraction and analysis of space-borne laser spot image characteristic parameters. National Remote Sensing Bulletin， 26（3）：555-567
激光指向、足印大小和形状、能量等参数的精确提取是评估星载激光测高数据质量的重要指标。然而，对这些参数的研究和理解目前还不明确，为准确提取和理解这些参数，本文依托ICESat/GLAS的激光剖面阵列（LPA）影像数据，采用激光能量最大强度的1/e
2
弱化背景噪声影响，利用灰度加权一阶矩阵法和椭圆拟合法提取LPA影像的5个特征参数，并与ICESat/GLAS官方提供的结果比较了不同运行周期的相对误差，实验结果表明，LPA质心提取精度可达0.9″，优于0.3个像素，相对定位精度可达0.37″，优于0.11个像素，结果与GLAS官方结果相当。由于在轨温度、激光能量随着运行周期的改变，导致LPA影像特征参数呈现不同程度的变化，本文的方法能有效监测这些参数的变化。星载激光光斑影像特征提取和分析对数据处理和质量评价具有重要性，利用ICESat光斑影像数据开展试验验证，为已经成功发射的高分七号和后续的国产陆地生态系统碳监测卫星提供参考。
The quality of ICESat/GLAS satellite laser altimetry data is mainly dependent on the complex relationships between several factors in the path of laser transmission and on the illuminated surface
including clouds
atmospheric aerosol
satellite pointing
laser energy
topography
vegetation
footprint size
shape
and orientation. Although ICESat/GLAS has a high precision of elevation (~10 cm)
the horizontal accuracy is relatively poor (~5 m). Therefore
the precise positioning of the laser shoot point has become an urgent problem.
In the ideal situation
the energy intensity distribution of the LPA is approximately Gaussian
and its shape is approximately elliptic on the ground. Considering the effect of the attenuation of the transmitted laser energy in the atmosphere
the size of the spot image boundary can be determined by the 1/e
2
maximum energy after eliminating the influence of the background noise of the LPA image. Therefore
we extracted the Laser Profile Array (LPA) image centroid and parameters of ICESat/GLAS via the 1/e
2
maximum energy distribution and the least square ellipse fitting in different campaigns
respectively.
Result shows that the extraction and relative positioning accuracies/frequencies of the LPA centroid can reach 0.9″/40 Hz and 0.37″/40 Hz
respectively
which are better than 0.3 and 0.11 pixels
respectively. The centroid results are similar to the official centroid provided in GLAH05. The parameters
namely
azimuth (computed as the angle between major axis and the LPA
x
-axis)
major axis
eccentricity
and total intensity
were only approximations using the maximum energy distribution in different campaigns.
The method in this study can effectively monitor the changes of these parameters. The characteristic extraction and analysis of space-borne laser spot image are of great significance to data processing and quality evaluation. ICESat’s spot image data were utilized to carry out experimental verification
providing reference for the launched of GF-7 and the follow-up domestic Terrestrial Ecosystem Carbon Monitoring Satellite.
卫星激光测高ICESat/GLASLPA光斑影像特征参数提取灰度加权矩阵法质心提取
satellite laser altimetryICESat/GLASLPA spot imageextraction of LPA characteristic parametersgray weighted matrix methodcentroid extraction
Abshire J B, Sun X L, Riris H, Sirota M, Palm S and Ketchum E A. 2003. Geoscience laser altimeter system (GLAS) on the ICESat mission: pre-launch and on-orbit measurement performance//2003 IEEE International Geoscience and Remote Sensing Symposium. Toulouse, France: IEEE: 1534-1536 [DOI: 10.1109/IGARSS.2003.1294166http://dx.doi.org/10.1109/IGARSS.2003.1294166]
Deng J S, Fan L H and Gu L L. 2012. Research on method for sub-pixel location of star image. Electronic Design Engineering, 20(22): 186-189
邓江生, 樊利恒, 古立莉. 2012. 星图像的亚像元细分定位方法研究. 电子设计工程, 20(22): 186-189 [DOI: 10.3969/j.issn.1674-6236.2012.22.065http://dx.doi.org/10.3969/j.issn.1674-6236.2012.22.065]
Li G Y. 2018. Earth observing satellite laser altimeter data processing method and engineer practice. Acta Geodaetica et Cartographica Sinica, 47(12): 1691
李国元. 2018. 对地观测卫星激光测高数据处理方法与工程实践. 测绘学报, 47(12): 1691 [DOI: 10.11947/j.AGCS.2018.20170681http://dx.doi.org/10.11947/j.AGCS.2018.20170681]
Li G Y and Tang X M. 2017. Analysis and validation of ZY-3 02 satellite laser altimetry data. Acta Geodaetica et Cartographica Sinica, 46(12): 1939-1949
李国元, 唐新明. 2017. 资源三号02星激光测高精度分析与验证. 测绘学报, 46(12): 1939-1949 [DOI: 10.11947/j.AGCS.2017.20170174http://dx.doi.org/10.11947/j.AGCS.2017.20170174]
Liebe C C. 2002. Accuracy performance of star trackers - a tutorial. IEEE Transactions on Aerospace and Electronic Systems, 38(2): 587-599 [DOI: 10.1109/TAES.2002.1008988http://dx.doi.org/10.1109/TAES.2002.1008988]
Neuenschwander A L, Urban T J, Gutierrez R and Schutz B E. 2008. Characterization of ICESat/GLAS waveforms over terrestrial ecosystems: implications for vegetation mapping. Journal of Geophysical Research: Biogeosciences, 113(G2): G02S03 [DOI: 10.1029/2007JG000557http://dx.doi.org/10.1029/2007JG000557]
Quine B M, Tarasyuk V, Mebrahtu H and Hornsey R. 2007. Determining star-image location: a new sub-pixel interpolation technique to process image centroids. Computer Physics Communications, 177(9): 700-706 [DOI: 10.1016/j.cpc.2007.06.007http://dx.doi.org/10.1016/j.cpc.2007.06.007]
Schutz B E, Zwally H J, Shuman C A, Hancock D and DiMarzio J P. 2005. Overview of the ICESat mission. Geophysical Research Letters, 32(21): L21S01 [DOI: 10.1029/2005GL024009http://dx.doi.org/10.1029/2005GL024009]
Sirota J M, Bae S, Millar P, Mostofi D, Webb C, Schutz B and Luthcke S. 2005. The transmitter pointing determination in the Geoscience Laser Altimeter System. Geophysical Research Letters, 32(22): L22S11 [DOI: 10.1029/2005GL024005http://dx.doi.org/10.1029/2005GL024005]
Sun G and Ranson K J. 2000. Modeling lidar returns from forest canopies. IEEE Transactions on Geoscience and Remote Sensing, 38(6): 2617-2626 [DOI: 10.1109/36.885208http://dx.doi.org/10.1109/36.885208]
Sungkoo B and Schutz B E. 2002. Precision Attitude Determination (PAD), Geoscience Laser Altimeter System (GLAS) Algorithm Theoretical Basis Document Version 2.2. http：//www.csr.vtexas.edu/glas/pdf/at bd_pad_10_02.pdf [2019-10-24]
Tang S J, Guo X S, Zhou Z F and Pu P C. 2013. Modified systematic error compensation algorithm for star centroid sub-pixel detection. Infrared and Laser Engineering, 42(6): 1502-1507
唐圣金, 郭晓松, 周召发, 蒲鹏程. 2013. 星点亚像元定位中系统误差的改进补偿方法. 红外与激光工程, 42(6): 1502-1507 [DOI: 10.3969/j.issn.1007-2276.2013.06.021http://dx.doi.org/10.3969/j.issn.1007-2276.2013.06.021]
Tang X M, Li G Y, Gao X M and Chen J Y. 2016. The rigorous geometric model of satellite laser altimeter and preliminarily accuracy validation. Acta Geodaetica et Cartographica Sinica, 45(10): 1182-1191
唐新明, 李国元, 高小明, 陈继溢. 2016. 卫星激光测高严密几何模型构建及精度初步验证. 测绘学报, 45(10): 1182-1191 [DOI: 10.11947/j.AGCS.2016.20150357http://dx.doi.org/10.11947/j.AGCS.2016.20150357]
Van Duong H. 2010. Processing and Application of ICESat Large Footprint Full Waveform Laser Range Data. Delft: Delft University of Technology
Van Waerbeke L, Mellier Y, Erben T, Cuillandre J C, Bernardeau F, Maoli R, Bertin E, McCracken H J, Le Fèvre O, Fort B, Dantel-Fort M, Jain B and Schneider P. 2000. Detection of correlated galaxy ellipticities from CFHT data: first evidence for gravitational lensing by large-scale structures. Astronomy and Astrophysics, 358: 30-44
Wang H Y, Xu E S, Li Z F, Li J J and Qin T M. 2015. Gaussian Analytic Centroiding method of star image of star tracker. Advances in Space Research, 56(10): 2196-2205 [DOI: 10.1016/j.asr.2015.08.027http://dx.doi.org/10.1016/j.asr.2015.08.027]
Wang H Y, Zhou W R, Lin H Y and Wang X L. 2012. Parameter estimation of Gaussian gray diffusion model of static image spot. Acta Optica Sinica, 32(3): 0323004
王海涌, 周文睿, 林浩宇, 王新龙. 2012. 静态像点高斯灰度扩散模型参数估计方法. 光学学报, 32(3): 0323004 [DOI: 10.3788/AOS201232.0323004http://dx.doi.org/10.3788/AOS201232.0323004]
Yadav G K. 2010. Simulation of ICESat/GLAS full-waveform over highly rugged terrain. Amsterdam: University of Twente
Yuan X Q, Li G Y, Tang X M, Gao X M, Huang G H and Li Y. 2018. Centroid automatic extraction of spaceborne laser spot image. Acta Geodaetica et Cartographica Sinica, 47(2): 135-141
袁小棋, 李国元, 唐新明, 高小明, 黄庚华, 李野. 2018. 星载激光光斑影像质心自动提取方法. 测绘学报, 47(2): 135-141 [DOI: 10.11947/j.AGCS.2018.20170517http://dx.doi.org/10.11947/j.AGCS.2018.20170517]
Zhang W H, Li S, Zhang Z Y, Liu R and Ma Y. 2018. Using waveform matching to precisely locate footprints of a satellite laser altimeter. Infrared and Laser Engineering, 47(11): 1117007
张文豪, 李松, 张智宇, 刘芮, 马跃. 2018. 利用波形匹配实现卫星激光测高脚点精确定位的方法. 红外与激光工程, 47(11): 1117007 [DOI: 10.3788/IRLA201847.1117007http://dx.doi.org/10.3788/IRLA201847.1117007]
Zwally H J, Schutz B, Abdalati W, Abshire J, Bentley C, Brenner A, Bufton J, Dezio J, Hancock D, Harding D, Herring T, Minster B, Quinn K, Palm S, Spinhirne J and Thomas R. 2002. ICESat’s laser measurements of polar ice, atmosphere, ocean, and land. Journal of Geodynamics, 34(3/4): 405-445 [DOI: 10.1016/S0264-3707(02)00042-Xhttp://dx.doi.org/10.1016/S0264-3707(02)00042-X]
相关作者
相关机构
京公网安备11010802024621