资源三号02星激光测高仪足印位置预报方法

doi:10.11947/j.AGCS.2017.20160639

测绘学报 ›› 2017, Vol. 46 ›› Issue (7): 866-873.doi: 10.11947/j.AGCS.2017.20160639

资源三号02星激光测高仪足印位置预报方法

唐新明¹, 谢俊峰^1,2, 莫凡¹, 朱广彬¹, 窦显辉¹, 张强³, 李国元¹, 欧阳斯达¹

1. 国家测绘地理信息局卫星测绘应用中心, 北京海淀 100048;
2. 辽宁工程技术大学测绘与地理科学学院, 辽宁阜新 123000;
3. 武汉大学卫星导航定位技术研究中心, 湖北武汉 430079

收稿日期:2016-12-15 修回日期:2017-06-05 出版日期:2017-07-20 发布日期:2017-07-25
通讯作者: 谢俊峰 E-mail:junfeng_xie@163.com
作者简介:唐新明(1966—),男,博士,研究员,博士生导师,主要从事摄影测量与航天测绘的研究与应用工作。
基金资助:
国家高分专项高分遥感测绘应用示范系统项目（AH1601-9）；国家测绘地理信息局2016年基础测绘科技项目（2016KJ0204）；国家青年科学基金（41301525）；国家自然基金面上项目（41571440）；国家测绘地理信息局青年学术带头人基金（D1501）

Footprint Location Prediction Method of ZY3-02 Altimeter

TANG Xinming¹, XIE Junfeng^1,2, MO Fan¹, ZHU Guangbin¹, DOU Xianhui¹, ZHANG Qiang³, LI Guoyuan¹, OUYANG Sida¹

1. Satellite Surveying and Mapping Application Center, NASG, Beijing 100048, China;
2. School of Surveying, Mapping and Geoinformation Science, Liaoning Technology University, Fuxin 123000, China;
3. GNSS Research Center, Wuhan University, Wuhan 430079, China

Received:2016-12-15 Revised:2017-06-05 Online:2017-07-20 Published:2017-07-25
Supported by:
The Project of High Resolution Images Surveying and Mapping Application System(No.AH1603-9);The National Fund for Basic Surveying and Mapping (No.2016KJ0204);The National Science Foundation for Young Scientists of China(No. 41301525);The National Natural Science Foundation(No.41571440);The Young academic leaders Fund of National Geographic Information Bureau of Surveying and Mapping(No.D1501)

摘要/Abstract

摘要： 激光测高仪在轨几何检校是提高激光点平面和高程精度的必要途径，而激光足印地准确捕获是成功开展激光测高仪在轨几何检校的前提。本文针对资源三号02星搭载的我国首台激光测高仪的在轨几何检校试验需要，在参考光学遥感卫星成像几何模型的基础上，提出并构建了一套严密的激光足印位置预报模型。该模型充分顾及卫星平台在轨运行规律及激光与卫星相对几何关系，建立了激光发射点到地面足印的严密几何定位预报模型，通过金字塔地形匹配、基于加速度轨道预测以及频率域姿态分析分别获取预估的激光指向、轨道位置和姿态信息，实现地面激光足印的位置预报。该模型已应用于资源三号02星激光测高仪在轨几何检校试验中，预报的激光足印位置与探测器捕获到的实际位置的最大误差小于150 m，充分验证了预报模型的正确性，实现了我国遥感卫星从天上到地面点对点的精确预报，为国产激光测高仪在轨几何检校提供了有力的技术支撑。

关键词: 激光测高仪, 激光足印, 严密几何定位预报模型, 指向预估, 轨道预报, 姿态预报

Abstract: On-orbit geometric calibration is an essential way to improve plane and elevation accuracy of laser altimeter data, and the laser footprint location prediction is a prerequisite for calibration based on land infrared detector. This paper builds a laser footprint location prediction model for China's first space-borne laser altimeter carried by ZY3-02, which refers to the satellite optical camera rigorous geometry imaging model. The model takes full account of the law of platform movement, and correlates laser emission center with ground footprint point. We get the precise predicted laser pointing by Pyramid terrain matching, ephemerisby acceleration prediction, and attitude by frequency analysis. The laser footprint location can be predicted. This laser footprint location prediction model were successfully applied in the calibration test of the laser altimeter on ZY3-02 satellite, and the maximum error between the predicted location and real footprint location obtained by triggered detectors is less than 150 m, which proves the validity of the proposed model. The proposed method provides the precise point-to-point prediction from satellite to ground for Chinese remote sensing satellite, and offers a technological support for the space-borne laser altimeter calibration in future.

Key words: laser altimeter, laser footprint, rigorous geometric positioning prediction model, pointing prediction, orbit prediction, attitude prediction

中图分类号:

P236

唐新明, 谢俊峰, 莫凡, 朱广彬, 窦显辉, 张强, 李国元, 欧阳斯达. 资源三号02星激光测高仪足印位置预报方法[J]. 测绘学报, 2017, 46(7): 866-873.

TANG Xinming, XIE Junfeng, MO Fan, ZHU Guangbin, DOU Xianhui, ZHANG Qiang, LI Guoyuan, OUYANG Sida. Footprint Location Prediction Method of ZY3-02 Altimeter[J]. Acta Geodaetica et Cartographica Sinica, 2017, 46(7): 866-873.

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资源三号02星激光测高仪足印位置预报方法

Footprint Location Prediction Method of ZY3-02 Altimeter

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