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Sensors 2009, 9(9), 6604-6612; doi:10.3390/s90906604

An Improved Approach for Terrain Correction: Application to Northeast Asia’s Highest Peak (Mt. Jade, Taiwan)

Department of Real Estate and Built Environment, National Taipei University / No. 151, University Road, San Shia, Taipei 23741, Taiwan
Received: 24 July 2009 / Revised: 13 August 2009 / Accepted: 20 August 2009 / Published: 24 August 2009
(This article belongs to the Section Chemical Sensors)
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Mt. Jade (or “Yushan” in Chinese) is the highest peak in northeast Asia. The topography is very rugged and complicated. Such terrain makes it difficult to obtain the correct results for terrain corrections (TCs). This paper developed an improved approach, named cone-section method, to compute the TCs of the Mt. Jade area using a high-resolution digital elevation model (DEM) on a 9" × 9" grid. The corrections were calculated to the distance of 100 km with an average rock density of 2.57 × 103 kg•m-3. This investigation compared the results of TCs from the cone-section method with those from the cylinder prism and Gaussian quadrature methods using a 9" × 9" elevation grid for the inner zone and a 90" × 90" elevation grid for the outer zone. The inner and outer radii were set to 20 and 200 km, respectively. The comparisons showed that the cone-section algorithm is consistent with the Gaussian quadrature. Furthermore, the cone-section method is an appropriate approach for TCs in high elevation areas, yielding results that outperform the cylinder prism method. View Full-Text
Keywords: terrain correction; cone-section; cylinder prism; Gaussian quadrature terrain correction; cone-section; cylinder prism; Gaussian quadrature

This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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Chen, K.-H. An Improved Approach for Terrain Correction: Application to Northeast Asia’s Highest Peak (Mt. Jade, Taiwan). Sensors 2009, 9, 6604-6612.

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