A Digital Terrain Modeling Method in Urban Areas by the ICESat-2 (Generating precise terrain surface profiles from photon-counting technology)

IF 1 4区地球科学 Q4 GEOGRAPHY, PHYSICAL

Photogrammetric Engineering and Remote Sensing Pub Date : 2021-04-01 DOI:10.14358/PERS.87.4.237

Nahed Osama, Bisheng Yang, Yue Ma, Mohamed Freeshah

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引用次数: 5

Abstract

The ICE, Cloud and land Elevation Satellite-2 (ICES at-2) can provide new measurements of the Earth's elevations through photon-counting technology. Most research has focused on extracting the ground and the canopy photons in vegetated areas. Yet the extraction of the ground photons from urban areas, where the vegetation is mixed with artificial constructions, has not been fully investigated. This article proposes a new method to estimate the ground surface elevations in urban areas. The ICES at-2 signal photons were detected by the improved Density-Based Spatial Clustering of Applications with Noise algorithm and the Advanced Topographic Laser Altimeter System algorithm. The Advanced Land Observing Satellite-1 PALSAR –derived digital surface model has been utilized to separate the terrain surface from the ICES at-2 data. A set of ground-truth data was used to evaluate the accuracy of these two methods, and the achieved accuracy was up to 2.7 cm, which makes our method effective and accurate in determining the ground elevation in urban scenes.

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ICESat-2在城市地区的数字地形建模方法（利用光子计数技术生成精确的地形表面轮廓）

ICE、云和陆地高程卫星-2（ICES at-2）可以通过光子计数技术提供地球高程的新测量。大多数研究都集中在提取植被地区的地面和树冠光子上。然而，从植被与人工建筑混合的城市地区提取地面光子的方法尚未得到充分研究。本文提出了一种估算城市地表高程的新方法。ICES at-2信号光子是通过改进的基于密度的空间聚类应用噪声算法和先进的地形激光高度计系统算法检测到的。高级陆地观测卫星-1 PALSAR衍生的数字地表模型已被用于从ICES at-2数据中分离地形表面。使用一组地面实况数据来评估这两种方法的精度，所获得的精度高达2.7cm，这使得我们的方法在确定城市场景中的地面高程方面是有效和准确的。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Photogrammetric Engineering and Remote Sensing 地学-成像科学与照相技术

CiteScore

1.70

自引率

15.40%

发文量

审稿时长

9 months

期刊介绍： Photogrammetric Engineering & Remote Sensing commonly referred to as PE&RS, is the official journal of imaging and geospatial information science and technology. Included in the journal on a regular basis are highlight articles such as the popular columns “Grids & Datums” and “Mapping Matters” and peer reviewed technical papers. We publish thousands of documents, reports, codes, and informational articles in and about the industries relating to Geospatial Sciences, Remote Sensing, Photogrammetry and other imaging sciences.