Hybrid lidar radar receiver for underwater imaging applications

Madhavi Seetamraju; Rajan Gurjar; Michael Squillante; Jeffrey P. Derderian

doi:10.1117/12.820246

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5 May 2009 Hybrid lidar radar receiver for underwater imaging applications

Madhavi Seetamraju, Rajan Gurjar, Michael Squillante, Jeffrey P. Derderian

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Proceedings Volume 7306, Optics and Photonics in Global Homeland Security V and Biometric Technology for Human Identification VI; 73061Q (2009) https://doi.org/10.1117/12.820246
Event: SPIE Defense, Security, and Sensing, 2009, Orlando, Florida, United States

Abstract

In this work, we present research performed to improve the receiver characteristics for underwater imaging applications using the hybrid lidar-radar detection technique. We report the development of the next-generation coherent heterodyne receiver using modulation of the optical receiver's amplifier gain. Significant advantages in the receiver specifications are achieved using a large-area, high gain, low-noise silicon avalanche photodiode (APD) as the photodetector cum frequency mixer-demodulator. We demonstrate that heterodyne detection by gain modulation of APD can be used to increase the signal-to-noise ratio, detection sensitivity and bandwidth for the hybrid receiver system.

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Madhavi Seetamraju, Rajan Gurjar, Michael Squillante, and Jeffrey P. Derderian "Hybrid lidar radar receiver for underwater imaging applications", Proc. SPIE 7306, Optics and Photonics in Global Homeland Security V and Biometric Technology for Human Identification VI, 73061Q (5 May 2009); https://doi.org/10.1117/12.820246

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