2016
DOI: 10.1051/itmconf/20160709004
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INSAR Flat-earth Phase Removal Approach Based on DEM to Settlement Area

Abstract: Abstract. The difficulties of phase unwrapping was increased with the existence of flat-earth phase removal, at the same time ,it covered up the real topographical conditions .In order to solve this problem ,the paper presented a method of re-flattening. based on DEM to eliminate flat-earth phase, with the interferogram, and then chose some special control points to construct polynomial fitting, removed residual phase and noise. By analyzing the ALOS/PALSAR at the mine subsidence area, the contrast experiment … Show more

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“…(1) the orbit-based methods [14][15][16], (2) the low-resolution DEM-based methods [17,18] and (3) the frequency-based methods [19][20][21][22][23]. The first two methods rely on orbit information provided by satellites to calculate and remove the flat-earth interferometric phase, while the third method uses the frequency characteristic of the flat-earth interferogram for flattening.…”
Section: Introductionmentioning
confidence: 99%
“…(1) the orbit-based methods [14][15][16], (2) the low-resolution DEM-based methods [17,18] and (3) the frequency-based methods [19][20][21][22][23]. The first two methods rely on orbit information provided by satellites to calculate and remove the flat-earth interferometric phase, while the third method uses the frequency characteristic of the flat-earth interferogram for flattening.…”
Section: Introductionmentioning
confidence: 99%