14 September 2011 Power requirements for polarimetric SAR imaging
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Abstract
Polarimetric SAR imaging is a direct-detection LADAR imaging technique designed to synthesize a large aperture made up of independent detectors all sensing a common beam of light that is polarized in nature. The aperture synthesis allows the array of detectors to achieve spatial resolution consistent with a monolithic aperture of a similar size. Unanswered questions remain about the use of this technique including how much power/aperture product is required in order to achieve a specified degree of spatial resolution. Also of concern is how much speckle averaging is necessary to overcome noise inherent in this type of synthetic aperture system. This paper addresses these questions by formulating relationships between array size, target size, laser energy per pulse, number of pulses required in averaging and the desired resolution of the system. Computer simulations are presented which demonstrate these relationships for a common resolution target.
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Stephen C. Cain, "Power requirements for polarimetric SAR imaging", Proc. SPIE 8165, Unconventional Imaging, Wavefront Sensing, and Adaptive Coded Aperture Imaging and Non-Imaging Sensor Systems, 81650H (14 September 2011); doi: 10.1117/12.891388; https://doi.org/10.1117/12.891388
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KEYWORDS
Polarimetry

Receivers

Imaging systems

Photons

Sensors

Speckle imaging

Image resolution

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