The paper debates a method for monitoring the polarimetric quality of a spaceborne SAR systems based entirely the available in-scene information. The key role is played by the stable targets, namely polarimetric Permanent Scatterers, which are detected through multi-image processing. The exploitation of temporal information in addition to the spatial statistics used for Distributed Targets, allows for a temporal differential monitoring of every distortion parameter of the system (overall gain, imbalances and cross-talks) even without the presence of a calibrated reflector. The performance that can be achieved through such assimilation has been assessed by means of synthetic simulations.
Temporal Monitoring of Polarimetric SAR Systems by Natural Calibrators
MONTI-GUARNIERI, ANDREA VIRGILIO;TEBALDINI, STEFANO
2013-01-01
Abstract
The paper debates a method for monitoring the polarimetric quality of a spaceborne SAR systems based entirely the available in-scene information. The key role is played by the stable targets, namely polarimetric Permanent Scatterers, which are detected through multi-image processing. The exploitation of temporal information in addition to the spatial statistics used for Distributed Targets, allows for a temporal differential monitoring of every distortion parameter of the system (overall gain, imbalances and cross-talks) even without the presence of a calibrated reflector. The performance that can be achieved through such assimilation has been assessed by means of synthetic simulations.| File | Dimensione | Formato | |
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