An Elevation Accuracy Analysis of AW3D30, SRTM3 and ASTER GDEM under Different Terrain Conditions

Wei De-hong; Cui Jia-wu

doi:10.12052/gdutxb.200152

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An Elevation Accuracy Analysis of AW3D30, SRTM3 and ASTER GDEM under Different Terrain Conditions

更新时间：2026-05-27

- An Elevation Accuracy Analysis of AW3D30, SRTM3 and ASTER GDEM under Different Terrain Conditions
- Vol. 38, Issue 3, Pages: 91-96(2021)
- 作者机构：
  
  1. 广东工业大学土木与交通工程学院,广东,广州,510006
  2. 广州市城市规划勘测设计研究院,广东,广州,510060
- 作者简介：
- 基金信息：
- DOI：10.12052/gdutxb.200152
  CLC： P228.1
- Online First：10 May 2021，
  
  Published：2021
- 稿件说明：
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魏德宏, 崔家武. 不同地形条件下的AW3D30、SRTM3和ASTER GDEM高程精度分析[J]. 广东工业大学学报, 2021, 38(3): 91-96.

Wei De-hong, Cui Jia-wu. An Elevation Accuracy Analysis of AW3D30, SRTM3 and ASTER GDEM under Different Terrain Conditions[J]. 2021, 38(3): 91-96.
魏德宏, 崔家武. 不同地形条件下的AW3D30、SRTM3和ASTER GDEM高程精度分析[J]. 广东工业大学学报, 2021, 38(3): 91-96. DOI： 10.12052/gdutxb.200152.

Wei De-hong, Cui Jia-wu. An Elevation Accuracy Analysis of AW3D30, SRTM3 and ASTER GDEM under Different Terrain Conditions[J]. 2021, 38(3): 91-96. DOI： 10.12052/gdutxb.200152.

摘要

以广东部分山地丘陵为研究区域

分析了数字高程模型AW3D30、SRTM3 V4.1和ASTER GDEM V3的高程精度。利用车载动态PPP技术对沿广州、惠州、韶关、清远约730 km的线路进行了数据采集

并由CSRS-PPP定位服务系统解算得到动态点的WGS84坐标

再通过重力场模型EIGEN-6C4将动态点的大地高转换为正常高

最后对3种数字高程模型进行高程检核。结果表明: AW3D30、SRTM3 V4.1和ASTER GDEM V3的平均误差分别为0.55、0.17、1.59 m

均方根误差分别为3.78、5.84、8.88 m。3种数字高程模型的平均误差在不同海拔区间差异明显

其中AW3D30在不同海拔区间的平均误差振幅相对较小

在2.18 m以内; SRTM3 V4.1的平均误差与海拔为负相关关系

平均误差随着海拔的升高由正值逐渐转为负值; ASTER GDEM V3的平均误差在(0 m

250 m]海拔区间为2 m左右

在(250 m

800 m]区间为–2.28 m。AW3D30的均方根误差与标准差整体上随着海拔的升高而减小

SRTM3 V4.1随着海拔的升高而增大

ASTER GDEM V3无显著规律

在(100 m

250 m]区间优于7.69 m

在其余区间优于9.86 m。

Abstract

The elevation accuracy of AW3D30 SRTM3 v4.1 and ASTER GDEM V3 are analyzed through the area of the mountainous hills in parts of Guangdong. The data of 730 km lines along Guangzhou

Huizhou

Shaoguan and Qingyuan are collected by vehicle dynamic PPP

the WGS84 coordinates of dynamic points calculated by CSRS-PPP positioning service system

geodetic height of dynamic points converted into normal height by gravity field model EIGEN-6C4

and finally

the elevation of three digital elevation models are checked. The results show that the average errors of AW3D30

SRTM3 v4.1 and ASTER GDEM V3 are

respectively

0.55

0.17 and 1.59 m

and the root mean square 3.78

5.84 and 8.88 m. The average error amplitude of AW3D30 in different altitudes is relatively small

within 2.18 m; the average error of SRTM3 v4.1 has a negative correlation with altitude

and the average error gradually changes from positive value to negative value with the increase of altitude; the average error of ASTER GDEM V3 is within (0 m

2.18 m] altitude range and is about 2 m and -2.28 m in (250 m

800 m] range. The root mean square error and standard deviation of AW3D30 decrease with the increase of altitude

while SRTM3 v4.1 increases with the increase of altitude. ASTER GDEM V3 has no significant rule

which is better than 7.69 m in (100 m

250 m]

and better than 9.86 m in other regions.

关键词

Keywords

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