Sandia National Laboratories flew its Facility for Advanced RF and Algorithm Development X-Band (9.6-GHz center frequency), fully polarimetric synthetic aperture radar (PolSAR) in VideoSAR mode to collect complex-valued SAR imagery before, during, and after the sixth Source Physics Experiment's (SPE-6) underground explosion. The VideoSAR products generated from the data sets include “movies” of single- and quad-polarization coherence maps, magnitude imagery, and polarimetric decompositions. Residual defocus, due to platform motion during data acquisition, was corrected with a digital elevation model-based autofocus algorithm. We generated and exploited the VideoSAR image products to characterize the surface movement effects caused by the underground explosion. Unlike seismic sensors, which measure local area seismic waves using sparse spacing and subterranean positioning, these VideoSAR products captured high-spatial resolution, 2-D, time-varying surface movement. The results from the fifth SPE (SPE-5) used single-polarimetric VideoSAR data. In this paper, we present single-polarimetric and fully polarimetric VideoSAR results while monitoring the SPE-6 underground chemical explosion. We show that fully polarimetric VideoSAR imaging provides a unique, coherent, time-varying measure of the surface expression of the SPE-6 underground chemical explosion. We include new surface characterization results from the measured PolSAR SPE-6 data via H/A/α polarimetric decomposition.

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platform videosar image products sparse spacing and subterranean seismic sensors which polarimetric decompositions residual defocus fully polarimetric videosar imaging local area seismic waves coherent timevarying measure ampx201cmoviesampx201d of single and quadpolarization coherence maps magnitude imagery surface movement effects highspatial resolution 2d timevarying surface polarimetric synthetic aperture radar polsar the surface expression of the spe6 underground chemical complexvalued sar imagery digital elevation modelbased autofocus haampx03b1 polarimetric decomposition characterization

David A. YockyR. Derek WestRobert M. RileyTerry M. Calloway,.Monitoring Surface Phenomena Created by an Underground Chemical Explosion Using Fully Polarimetric VideoSAR. 57 (5),2481-2493.

David A. YockyR. Derek WestRobert M. RileyTerry M. Calloway,"Monitoring Surface Phenomena Created by an Underground Chemical Explosion Using Fully Polarimetric VideoSAR" 57

David A. YockyR. Derek WestRobert M. RileyTerry M. Calloway,"Monitoring Surface Phenomena Created by an Underground Chemical Explosion Using Fully Polarimetric VideoSAR"