Coherent matched-filter reflection loss from a moving rough surface as a function of pulse duration and ensonified area

2017 ◽  
Vol 141 (5) ◽  
pp. 3845-3845
Author(s):  
Douglas Abraham
Keyword(s):  
Rough Surface ◽  
Pulse Duration ◽  
Reflection Loss ◽  
Matched Filter

Polarimetric matched filter for coherent imaging

1988 ◽  
Vol 66 (10) ◽  
pp. 871-877 ◽  
Author(s):  
Alexander B. Kostinski ◽  
Brian D. James ◽  
Wolfgang-M. Boerner
Keyword(s):  
Rough Surface ◽  
San Francisco ◽  
Matched Filter ◽  
San Francisco Bay Area ◽  
Image Contrast ◽  
Coherent Imaging ◽  
Polarimetric Synthetic Aperture Radar ◽  
Bay Area ◽  
Processing Techniques ◽  
Polarization Scattering Matrix

In this paper we focus on image-contrast optimization between two rough-surface classes. Our approach is based strictly on polarimetric filtering, and therefore, no digital image-processing techniques are employed. The approach is tested on a complete polarimetric synthetic aperture radar (POL-SAR) image of the San Francisco Bay area. The data have been taken with the National Aeronautics and Space Administration – Jet Propulsion Laboratory CV-990L-band POL-SAR system, where eight real numbers (complex elements of a 2 × 2 polarization scattering matrix) are associated with each image pixel. Optimal transmitted polarizations (corresponding to maxima or minima of reflected energy) are found for each image pixel, and the results are analyzed statistically via a set of joint two-dimensional histograms. This is done for both of the rough-surface classes. The image response to the "optimal" incident polarization is then simulated digitally by adjusting the receiver polarization according to the modes of the histograms. The corresponding images are computed and displayed with significant image-contrast improvement.

Matched-Filter Loss From Time-Varying Rough-Surface Reflection With a Small Effective Ensonified Area

2018 ◽  
Vol 43 (2) ◽  
pp. 506-522 ◽  
Author(s):  
Douglas A. Abraham ◽  
Stefan M. Murphy ◽  
Paul C. Hines ◽  
Anthony P. Lyons
Keyword(s):  
Rough Surface ◽  
Matched Filter ◽  
Time Varying ◽  
Surface Reflection

Laser pulse duration effects in Xe2+ ions induced by multiphoton absorption at 0.53 μm

1983 ◽  
Vol 44 (11) ◽  
pp. 1247-1255 ◽  
Author(s):  
A. L'Huillier ◽  
L.A. Lompre ◽  
G. Mainfray ◽  
C. Manus
Keyword(s):  
Laser Pulse ◽  
Pulse Duration ◽  
Laser Pulse Duration ◽  
Multiphoton Absorption
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