HighlightsThe mechanism of ionospheric effects on InSAR is proposed.Quantitative analysis of ionosphere on topography and deformation are given.The effects of ionospheric temporal variations on InSAR have been analyzed.
AbstractInSAR measurements can be significantly affected by the atmosphere when the radar signal propagates through the atmosphere since it varies with space and time. Great efforts have been made in recent years to better understand the properties of the tropospheric effects and to develop methods for mitigating these effects. By using the basic principles of InSAR, the quantitative analysis of ionospheric delay effects on topography and surface deformation have been introduced for the first time. The measurement errors can be related to the vertical ionospheric total electron content (vTEC). By using the ionospheric observations, the effects of temporal ionospheric variations on InSAR have been analyzed. The results indicate that the ionospheric variations with time, season, solar cycle and geomagnetic activities can compromise the effectiveness of InSAR for both the measurement of topography and surface determination. The repeat-pass SAR interferometry errors induced by ionosphere should be corrected by actual measurements.
Ionospheric effects on repeat-pass SAR interferometry
Advances in Space Research ; 60 , 7 ; 1504-1515
2017-06-09
12 pages
Article (Journal)
Electronic Resource
English
Ionospheric effects on repeat-pass SAR interferometry
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