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13 October 2014Underwater monitoring experiment using hyperspectral sensor, LiDAR and high resolution satellite imagery
1Korea Ocean Research and Development Institute (Korea, Republic of) 2Korea Univ. of Science and Technology (Korea, Republic of) 3Korea Maritime and Ocean Univ. (Korea, Republic of)
In general, hyper-spectral sensor, LiDAR and high spatial resolution satellite imagery for underwater monitoring are
dependent on water clarity or water transparency that can be measured using a Secchi disk or satellite ocean color data.
Optical properties in the sea waters of South Korea are influenced mainly by a strong tide and oceanic currents, diurnal,
daily and seasonal variations of water transparency. The satellite-based Secchi depth (ZSD) analysis showed the
applicability of hyper-spectral sensor, LiDAR and optical satellite, determined by the location connected with the local
distribution of Case 1 and 2 waters. The southeast coastal areas of Jeju Island are selected as test sites for a combined
underwater experiment, because those areas represent Case 1 water. Study area is a small port (<15m) in the southeast
area of the island and linear underwater target used by sewage pipe is located in this area. Our experiments are as
follows: 1. atmospheric and sun-glint correction methods to improve the underwater monitoring ability; 2. intercomparison
of water depths obtained from three different sensors. Three sensors used here are the CASI-1500
(Wide‐Array Airborne Hyperspectral VNIR Imager (0.38-1.05 microns), the Coastal Zone Mapping and Imaging Lidar
(CZMIL) and Korean Multi-purpose Satellite-3 (KOMPSAT-3) with 2.8 meter multi-spectral resolution. The
experimental results were affected by water clarity and surface condition, and the bathymetric results of three sensors
show some differences caused by sensor-itself, bathymetric algorithm and tide level. It is shown that CASI-1500 was
applicable for bathymetry and underwater target detection in this area, but KOMPSAT-3 should be improved for Case 1
water. Although this experiment was designed to compare underwater monitoring ability of LIDAR, CASI-1500,
KOMPSAT-3 data, this paper was based on initial results and suggested only results about the bathymetry and
underwater target detection.
Chan-Su Yang andSun-Hwa Kim
"Underwater monitoring experiment using hyperspectral sensor, LiDAR and high resolution satellite imagery", Proc. SPIE 9250, Electro-Optical Remote Sensing, Photonic Technologies, and Applications VIII; and Military Applications in Hyperspectral Imaging and High Spatial Resolution Sensing II, 925013 (13 October 2014); https://doi.org/10.1117/12.2067077
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Chan-Su Yang, Sun-Hwa Kim, "Underwater monitoring experiment using hyperspectral sensor, LiDAR and high resolution satellite imagery," Proc. SPIE 9250, Electro-Optical Remote Sensing, Photonic Technologies, and Applications VIII; and Military Applications in Hyperspectral Imaging and High Spatial Resolution Sensing II, 925013 (13 October 2014); https://doi.org/10.1117/12.2067077