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Proceedings Paper

Waveform design considerations for modulated pulse lidar
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Paper Abstract

Techniques have been developed to mitigate many of the issues associated with underwater imaging in turbid environments. However, as targets get smaller and better camouflaged, new techniques are needed to enhance system sensitivity. Researchers at NAVAIR have been developing several techniques that use RF modulation to suppress background clutter and enhance target detection. One approach in particular uses modulation to encode a pulse in a synchronous line scan configuration. Previous results have shown this technique to be effective at both forward and backscatter suppression. Nearly a perfect analog to modulated pulse radar, this technique can leverage additional signal processing and pulse encoding schemes to further suppress background clutter, pull signals out of noise, and improve image resolution. Additionally, using a software controlled transmitter, we can exploit this flexibility without the need to change out expensive hardware. Various types of encoding schemes were tested and compared. We report on their comparative effectiveness relative to a more conventional non-coded pulse scheme to suppress background clutter and improved target detection.

Paper Details

Date Published: 5 June 2014
PDF: 13 pages
Proc. SPIE 9111, Ocean Sensing and Monitoring VI, 91110P (5 June 2014); doi: 10.1117/12.2050395
Show Author Affiliations
Shawn O'Connor, Naval Air Systems Command (United States)
Robert Lee, Naval Air Systems Command (United States)
Linda Mullen, Naval Air Systems Command (United States)
Brandon Cochenour, Naval Air Systems Command (United States)

Published in SPIE Proceedings Vol. 9111:
Ocean Sensing and Monitoring VI
Weilin W. Hou; Robert A. Arnone, Editor(s)

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