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《地球科学与环境学报》[ISSN:1672-6561/CN:61-1423/P]

卷:

第46卷

期数:

2024年第06期

页码:

843-852

栏目:

大地测量、遥感与地学大数据

出版日期:

2024-12-15

文章信息/Info

Title:

Combined Adjustment for GF-14 Satellite Stereo Imagery and ICESat-2 Laser Altimetry Data

文章编号:

1672-6561(2024)06-0843-10

作者:

杨苗苗¹; 2*; 尚大帅¹; 2; 3; 高雪梅¹; 同芙蓉¹

(1. 中国人民解放军61363部队,陕西 西安 710054; 2. 信息工程大学 地理空间信息学院,河南 郑州 450001; 3. 智慧地球重点实验室,陕西 西安 710054)

Author(s):

YANG Miao-miao¹; 2*;  SHANG Da-shuai¹; 2; 3;  GAO Xue-mei¹;  TONG Fu-rong¹

(1. 61363 Troops of Chinese People’s Liberation Army, Xi’an 710054, Shaanxi, China; 2. Geospatial Information College, Information Engineering University, Zhengzhou 450001, Henan, China; 3. Key Laboratory of Smart Earth, Xi’an 710054, Shaanxi, China)

关键词:

联合平差;  立体影像;  高分十四号卫星;  ICESat-2卫星;  高程控制点;  数据配准;  高程检核点;  有理函数模型

Keywords:

combined adjustment;  stereo imagery;  GF-14 satellite;  ICESat-2 satellite;  elevation control point;  data registration;  elevation check point;  rational function model

分类号:

P237

DOI:

10.19814/j.jese.2024.07013

文献标志码:

A

摘要:

高分十四号是我国目前测绘精度最高卫星之一。为进一步提高高分十四号卫星的高程精度,将其与高程测量精度优势明显的ICESat-2激光测高数据进行联合处理。在利用各类激光属性信息对ICESat-2激光测高数据初步筛选的基础上,引入高程检核点设计了一种联合平差策略。在联合平差过程中精化激光高程控制点的筛选、解决立体影像数据与激光测高数据的配准问题,获取目标的高精度三维信息,并建立两个实验区对该联合平差策略处理结果进行分析验证。结果表明:联合平差策略能够较好地解决高程控制点筛选与数据配准问题,两个实验区立体影像的高程中误差均优于1 m,基本满足1:10 000地形图测绘的要求,可为全球1:10 000无地面控制点测图工程提供支撑,促进高分十四号卫星立体影像和ICESat-2激光测高数据在地形测绘领域的应用。

Abstract:

GF-14 is currently one of the satellites with the highest surveying and mapping accuracy in China. To further improve elevation accuracy of GF-14 satellite, it was combined with ICESat-2 laser altimetry data, which has obvious advantages in elevation measurement accuracy. Based on the preliminary screening of ICESat-2 laser altimetry data using various laser attribute information, a combined adjustment strategy was designed by introducing elevation check points, which refined the application of laser elevation control points, resolved the registration issues between the stereo image data and laser altimetry data, and obtained the high-precision 3D information of the target during the combined adjustment process. Then, the strategy was performed and analyzed using two experimental areas. In the experiments, the elevation root mean square error(RMSE)of processed stereo images in two areas was better than 1 m. The results show that the developed strategy effectively addresses the challenges of elevation control point selection and data registration in the combined adjustment process, which significantly enhances the elevation accuracy. Therefore, the proposed combined adjustment strategy can support the project of the global 1:10 000 mapping without ground control points, and promote the application of GF-14 satellite and ICESat-2 laser altimetry data in land surface surveying and mapping.

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相似文献/References:

备注/Memo

备注/Memo:

收稿日期:2024-07-14; 修回日期:2024-09-25
*通信作者:杨苗苗(1979-),女,河北沧州人,工程师,E-mail:707366786@qq.com。
通信作者:尚大帅(1988-),男,河南陕县人,工程师,工学博士,E-mail:dad121jm@163.com。

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更新日期/Last Update: 2024-12-15