测绘通报 ›› 2020, Vol. 0 ›› Issue (7): 13-17.doi: 10.13474/j.cnki.11-2246.2020.0206

• 全球地理信息资源建设 • 上一篇    下一篇

多源星载SAR地形干涉测量精度分析

陈利军1, 张瑞2, 郭旭东2, 洪凯瑞2, 涂晋升2   

  1. 1. 国家基础地理信息中心, 北京 100830;
    2. 西南交通大学, 四川 成都 611756
  • 收稿日期:2020-04-07 修回日期:2020-05-18 发布日期:2020-08-01
  • 通讯作者: 张瑞。E-mail:zhangrui@swjtu.edu.cn E-mail:zhangrui@swjtu.edu.cn
  • 作者简介:陈利军(1969-),男,博士,高级工程师,研究方向为摄影测量与遥感。E-mail:chenlj@ngcc.cn
  • 基金资助:
    全球地理信息资源建设与维护更新(12130040);科技部国家重点研发计划(2016YBF0501401);国防科技创新特区项目(18H86301ZT00502101);四川省科技支撑计划应用基础面上项目(2018JY0664)

Accuracy analysis of topographic interferometry based on multi-source spaceborne SAR

CHEN Lijun1, ZHANG Rui2, GUO Xudong2, HONG Kairui2, TU Jinsheng2   

  1. 1. National Geomatics Center of China, Beijing 100830, China;
    2. Southwest Jiaotong University, Chengdu 611756, China
  • Received:2020-04-07 Revised:2020-05-18 Published:2020-08-01

摘要: 星载InSAR技术具有高效率、高精度获取全球DEM数据及其他增值产品的优势,是地形测绘领域的研究热点。本文综合利用国内外多源星载SAR影像数据,开展地形干涉测量试验及精度对比分析,旨在为全球测绘提供技术参考。现有的X/C/L波段卫星SAR系统,如COSMO-SkyMed、GF-3、ALOS-2获取的干涉数据集,在青海典型复杂地形实验区均成功获取了DEM数据产品。分析结果表明,在3种典型数据源中,基于COSMO-SkyMed干涉测量DEM的精度与细节质量相对较高,GF-3干涉结果次之,ALOS-2数据也实现了较好的地形测图精度。相关结果从侧面论证了国产GF-3数据具备在空间基线合适的条件下获得高精度DEM数据产品的潜力。

关键词: 星载SAR, InSAR, 地形测绘, DEM, 精度分析

Abstract: Spaceborne InSAR technology has been one of the hotspots in topographic surveying and mapping. Its advantages lie in that it can obtain global DEM data and other value-added products quickly and accurately. For providing a technical reference to the global mapping task, the multi-source spaceborne SAR image data are applied in implementing terrain interferometry experiment and accuracy analysis. The results indicated that the main SAR image data, including COSMO-SkyMed, GF-3 and ALOS-2 corresponding to the existing spaceborne X/C/L-bands SAR systems, could obtain high-quality DEM data products in the typical study area of Qinghai province. The accuracy and detail quality of DEM obtained by COSMO-SkyMed interferometry are higher relatively, followed by the GF-3 result, and the ALOS-2 result also has enough precision. The related results demonstrated from the side that, national GF-3 spaceborne SAR system has enough potential power in topographic interferometry, but the suitable spatial baseline is needed.

Key words: spaceborne SAR, InSAR, topographic survey, DEM, accuracy analysis

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