In this data set, the digital elevation model (DEM) of the area in 2012 is obtained by using remote sensing images for the area, including the glacier and surrounding areas in the region. The data set contains one band, and the complex data of the same ground object can be obtained by using the platform equipped with synthetic aperture radar sensor at the same time or two parallel observations. After accurate registration, complex interferograms can be obtained by conjugate multiplication of complex images. Based on the geometric relationship among flight platform, beam view and baseline, the digital elevation model of glacier area is obtained by unwrapping the phase information of complex interferogram. It is only aimed at the surface elevation of the glacier in 2012, so it is not supplemented and improved, but fully open sharing is adopted. The data set contains dem2012, a total of 1 band. Data set file name and band name are as follows: data set file name: 2012 Tianshan Tomur peak area digital elevation model data set: dem2012-2012 digital elevation model of the region, unit: m (m).
This data set is mainly interpreted data, and the main data source is TerraSAR-X / TanDEM-X microwave remote sensing data.
The complex data of the same object on the ground can be obtained by using the platform equipped with synthetic aperture radar (SAR) sensor and observing at the same time or twice in parallel. After accurate registration, complex interferograms can be obtained by conjugate multiplication of complex images. Based on the geometric relationship among flight platform, beam view and baseline, the digital elevation model of glacier area is obtained by unwrapping the phase information of complex interferogram.
By using the platform equipped with TerraSAR-X and TanDEM-X sensors, the complex data (including amplitude and phase information) of the same ground object are obtained at the same time to form an interference pair. After accurate registration, complex interferograms can be obtained by conjugate multiplication of complex images. Based on the geometric relationship among flight platform, beam view and baseline, the phase information in complex interferogram is unwrapped to obtain the ground elevation information. The absolute accuracy in the vertical direction is better than 10 m, and the relative accuracy is 4 m at & gt; 20% and 2 m at & lt; 20%.
| # | number | name | type |
| 1 | 2013FY111400 | Basic special |
This work is licensed under
CC BY 4.0 (Creative Commons Attribution 4.0 International License).
CSTR:11738.11.ncdc.DIMaC.2020.103
10.12072/ncdc.DIMaC.db0056.2020
