24 April 2010 Developing a small multi frequency synthetic aperture radar for UAS operation: the SlimSAR
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The SlimSAR is a small, low-cost, Synthetic Aperture Radar (SAR) and represents a new advancement in high-performance SAR. ARTEMIS employed a unique design methodology in designing the SlimSAR that exploits previous developments. The system is designed to be smaller, lighter, and more flexible while consuming less power than typical SAR systems. The system consists of an L-band core and frequency block converters and is very suitable for use on a number of small UAS's. Both linear-frequency-modulated continuous-wave (LFM-CW) and pulsed modes have been tested. The LFM-CW operation achieves high signal-to-noise ratio while transmitting with less peak power than a comparable pulsed system. The flexible control software allows us to change the radar parameters in flight. The system has a built-in high quality GPS/IMU motion measurement solution and can also be packaged with a small data link and a gimbal for high frequency antennas. Multi-frequency SAR provides day and night imaging through smoke, dust, rain, and clouds with the advantages of additional capabilities at different frequencies (i.e. dry ground and foliage penetration at low frequencies, and change detection at high frequencies.)
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Evan Zaugg, Matthew Edwards, Alex Margulis, "Developing a small multi frequency synthetic aperture radar for UAS operation: the SlimSAR", Proc. SPIE 7669, Radar Sensor Technology XIV, 766902 (24 April 2010); doi: 10.1117/12.850207; https://doi.org/10.1117/12.850207

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