A Digital Elevation Model for Egypt by Collocation
• 2002
معلومات البحث
المؤلفون
مجلة هندسة المطرية – جامعة حلوان
الكلمات المفتاحية
Not Available
المجلة العلمية
Not Available
الناشر
Not Available
المجلد
Not Available
العدد
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الصفحات
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publication.type
Local
رابط البحث
Not Available
المواد المرفقة
Not Available
الملخص
In the current investigation, a 5'x5' digital terrain model for Egypt was computed by collocation, based on the available local height data and the high-resolution harmonic model GTM3a. Exploiting the dominant moderately varying Egyptian territory, the global high frequency topographic harmonic model was removed prior to the prediction into a grid and a posteriori restored at the grid nodes. A removal and restoration of a suitable trend surface, based on the residual height data, has also contributed to the smoothing strategy. According to the limited coverage and resolution of the available height data, the global-wise accuracy of the resulting DEM was found to be ± 29 meters.
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