东南极达尔克冰川现场定位观测误差分析

doi:10.7522/j.issn.1000-0240.2018.0095

冰川冻土 ›› 2018, Vol. 40 ›› Issue (5): 884-891.doi: 10.7522/j.issn.1000-0240.2018.0095

东南极达尔克冰川现场定位观测误差分析

艾松涛¹, 王珊斯¹, 鄂栋臣¹, 刘雷保², 李院生²

1. 武汉大学中国南极测绘研究中心, 湖北武汉 430079;
2. 中国极地研究中心, 上海 200136

收稿日期:2017-08-17 修回日期:2018-02-16 出版日期:2018-10-25 发布日期:2018-12-10
作者简介:艾松涛(1977-),男,湖北枝城人,副研究员,2012年在武汉大学获博士学位,从事3S技术集成应用与冰川变化研究.E-mail:ast@whu.edu.cn.
基金资助:
国家自然科学基金项目（41531069；41476162；41276201）资助

Error analysis of in situ positioning observations from Dalk Glacier on East Antarctica

AI Songtao¹, WANG Shansi¹, E Dongchen¹, LIU Leibao², LI Yuansheng²

1. Chinese Antarctic Center of Surveying & Mapping, Wuhan University, Wuhan 430079, China;
2. Polar Research Institute of China, Shanghai 200136, China

Received:2017-08-17 Revised:2018-02-16 Online:2018-10-25 Published:2018-12-10

摘要/Abstract

摘要： 中国南极考察队从2007年开始对达尔克冰川进行现场监测工作，在冰面上投设监测花杆并用前方交会的方法持续对花杆进行精确定位，用于冰川运动监测。2007-2012年，中国南极考察队员在东南极达尔克冰川上共计开展了18个批次的现场测量工作，经分析得到了67个高精度的空间交会点坐标，分属于10个独立的观测标志。为精化计算模型必须对实测数据仔细甄别，因此，同时考虑了仪器的归零差、地球曲率误差、大气折光误差等交会定位的主要误差来源，比较了3种因素对精确定位的影响，结果表明：地球曲率对精确定位的影响最大，其次是归零差，最后是大气折光引起的误差。对交会定位中各种误差的分析有利于改进同类工作中计算模型的选择，为冰川运动监测提供高精度的数据支撑。

关键词: 达尔克冰川, 归零改正, 地球曲率, 大气折光, 精确定位

Abstract: The Chinese National Antarctic Research Expedition (CHINARE) had been carrying out in situ observations on Dalk Glacier since 2007 using space azimuthal intersection method to locate the stakes on the glacier. The CHINARE members had got 18 batches of in situ azimuthal records during 2007-2012, thereafter 67 high-precision intersecting points were acquired, and these points belong to 10 independent stakes. This paper presents all the azimuthal observations on the Dalk Glacier, high precision intersection data processing, and the error resources in azimuthal intersection including zero-point readings, earth curvature and atmospheric refraction. The error analyzing works show that the earth curvature has the greatest impact on high precision positioning, the second important is the errors inside the zero-point readings, and the least important factor is the atmospheric refraction. The error analysis and error correction models have improved the calculation of high precision glacier movement monitoring.

Key words: Dalk glacier, zero-point correction, earth curvature, atmospheric refraction, high-precision positioning

中图分类号:

P343.6

艾松涛, 王珊斯, 鄂栋臣, 刘雷保, 李院生. 东南极达尔克冰川现场定位观测误差分析[J]. 冰川冻土, 2018, 40(5): 884-891.

AI Songtao, WANG Shansi, E Dongchen, LIU Leibao, LI Yuansheng. Error analysis of in situ positioning observations from Dalk Glacier on East Antarctica[J]. Journal of Glaciology and Geocryology, 2018, 40(5): 884-891.

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东南极达尔克冰川现场定位观测误差分析

Error analysis of in situ positioning observations from Dalk Glacier on East Antarctica

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