资源三号02星激光测高精度分析与验证

李国元; 唐新明

doi:10.11947/j.AGCS.2017.20170174

测绘学报 >

2017 , Vol. 46 >Issue 12: 1939 - 1949

DOI: https://doi.org/10.11947/j.AGCS.2017.20170174

摄影测量学与遥感

资源三号02星激光测高精度分析与验证

李国元 ,
唐新明

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1. 国家测绘地理信息局卫星测绘应用中心, 北京 100048;
2. 武汉大学资源与环境科学学院, 湖北武汉 430079;
3. 江苏省地理信息资源开发与利用协同创新中心, 江苏南京 210023

李国元(1984-),男,博士,注册测绘师,研究方向为卫星激光测高数据处理与应用。E-mail:ligy@sasmac.cn

收稿日期: 2017-04-11

修回日期: 2017-08-21

网络出版日期: 2017-12-28

基金资助

国家自然科学基金（41601505）；国家高分专项高分遥感测绘应用示范系统项目（AH1601-8）；国家测绘地理信息局基础测绘科技项目（2017KJ0204；2018KJ0204）

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Analysis and Validation of ZY-3 02 Satellite Laser Altimetry Data

LI Guoyuan ,
TANG Xinming

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1. Satellite Surveying and Mapping Application Center, NASG, Beijing 100048, China;
2. School of Resource and Environmental Sciences, Wuhan University, Wuhan 430079, China;
3. Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, Nanjing 210023, China

Received date: 2017-04-11

Revised date: 2017-08-21

Online published: 2017-12-28

Supported by

The National Natural Science Foundation of China (No. 41601505) The Special Fund for High Resolution Images Surveying and Mapping Application System of China (No. AH1601-8) The Surveying and Mapping Basic Research Program of National Administration of Surveying,Mapping and Geo-information (Nos. 2017KJ0204 2018KJ0204)

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摘要

资源三号02星搭载了我国首台对地观测的卫星激光测高试验性载荷，对该载荷的精度进行了理论分析，并采用多个区域进行了实际精度验证，同时对其在航天测绘中的应用进行了试验。资源三号02星激光测高仪在平坦地区（坡度≤2°）的理论高程精度为0.85 m、平面精度14.2 m。试验表明，资源三号02星激光测高仪获得的有效测高数据约占23.89%，检校场区域其高程精度为0.89 m，平面精度为14.76 m；华北地区高精度DSM地形数据验证其高程精度为1.09 m，内陆渤海海面上的激光高程精度为0.47 m。将激光足印点作为高程控制点时，在陕西渭南试验区能将资源三号02星立体影像无地面控制的高程精度从11.54 m提高到1.90 m。虽然资源三号02星激光测高仪为试验性载荷，但试验结果证实国产卫星激光测高数据能有效提高立体影像无地面控制的高程精度，在全球测图工程中具有推广应用价值，建议后续立体测图卫星搭载业务化应用的激光测高仪。

关键词： 资源三号02星; 卫星激光测高; 精度分析; 全球测图

本文引用格式

李国元 , 唐新明 . 资源三号02星激光测高精度分析与验证[J]. 测绘学报, 2017 , 46(12) : 1939 -1949 . DOI: 10.11947/j.AGCS.2017.20170174

Abstract

ZY-3 02 satellite loaded with Chinese first earth observing satellite laser altimeter,and has been launched successfully on 30th May,2016. In this paper,the theoretical accuracy of the laser altimeter is analyzed,and several experimental areas are used to verify the actual accuracy. At the same time,the application of the laser altimetry data in the field of space-borne photogrammetry is tested. The laser altimetry theoretical accuracy of ZY-3 02 satellite in the flat area (slope less than 2 degrees) is about 0.85 m and 14.2 m in the elevation and planimetry direction,respectively. The effective laser altimetry data account for about 23.89%,and near the calibration field the elevation accuracy is 0.89 m,and planimetry accuracy is about 14.76 m. Moreover,the verified elevation accuracy is 1.09 m in the North China by high precision DSM terrain data,and laser footprint points accuracy on the surface of the Bohai inland sea is about 0.47 m. When the laser foot print point is used as elevation control point,the elevation accuracy of the ZY-3 02 satellite stereo images in Shaanxi Weinan can be increased from 11.54 m to 1.90 m without GCPs. Although ZY3-02 satellite laser altimeter is just a test,the results proved that the domestic satellite laser altimetry data can effectively improve the stereo images without GCPs,which will be valuable in the global mapping project. It is suggest that operational laser altimeter equip on the next satellite of ZY-3 serials.

Key words： ZY-3 02 satellite; satellite laser altimetry; accuracy analysis; global mapping

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