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Proceedings Paper

CZMIL (coastal zone mapping and imaging lidar): from first flights to first mission through system validation
Author(s): Viktor I. Feygels; Joong Yong Park; Jennifer Wozencraft; Jennifer Aitken; Christopher Macon; Abhinav Mathur; Andy Payment; Vinod Ramnath
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Paper Abstract

CZMIL is an integrated lidar-imagery system and software suite designed for highly automated generation of physical and environmental information products for coastal zone mapping in the framework of the US Army Corps of Engineers (USACE) National Coastal Mapping Program (NCMP). This paper presents the results of CZMIL system validation in turbid water conditions along the Gulf Coast of Mississippi and in relatively clear water conditions in Florida in late spring 2012. Results of the USACE May-October 2012 mission in Green Bay, WI and Lake Erie are presented. The system performance tests show that CZMIL successfully achieved 7-8m depth in Mississippi with Kd =0.46m-1 (Kd is the diffuse attenuation coefficient) and up to 41m in Florida when Kd=0.11m-1. Bathymetric accuracy of CZMIL was measured by comparing CZMIL depths with multi-beam sonar data from Cat Island, MS and from off the coast of Fort. Lauderdale, FL. Validation demonstrated that CZMIL meets USACE specifications (two standard deviation, 2σ, ~30 cm). To measure topographic accuracy we made direct comparisons of CZMIL elevations to GPS-surveyed ground control points and vehicle-based lidar scans of topographic surfaces. Results confirmed that CZMIL meets the USACE topographic requirements (2σ, ~15 cm). Upon completion of the Green Bay and Lake Erie mission there were 89 flights with 2231 flightlines. The general hours of aircraft engine time (which doesn't include all transit/ferry flights) was 441 hours with 173 hours of time on survey flightlines. The 4.8 billion (!) laser shots and 38.6 billion digitized waveforms covered over 1025 miles of shoreline.

Paper Details

Date Published: 3 June 2013
PDF: 15 pages
Proc. SPIE 8724, Ocean Sensing and Monitoring V, 87240A (3 June 2013); doi: 10.1117/12.2017935
Show Author Affiliations
Viktor I. Feygels, Optech, Inc. (United States)
Joong Yong Park, Optech, Inc. (United States)
Jennifer Wozencraft, Joint Airborne Lidar Bathymetry Technical Ctr. of Expertise (United States)
Jennifer Aitken, Optech, Inc. (United States)
Christopher Macon, Joint Airborne Lidar Bathymetry Technical Ctr. of Expertise (United States)
Abhinav Mathur, Optech, Inc. (United States)
Andy Payment, Optech, Inc. (United States)
Vinod Ramnath, Optech, Inc. (United States)


Published in SPIE Proceedings Vol. 8724:
Ocean Sensing and Monitoring V
Weilin W. Hou; Robert A. Arnone, Editor(s)

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