1. LIG Nex1, Seongnam, South Korea
2. Department of Marine Science and Convergence Engineering / Department of Military Information Engineering, Hanyang University ERICA, Ansan, South Korea
3. Maritime Security Research Center, Korea Institute of Ocean Science and Technology, Busan, South Korea
4. Applied Physics Laboratory, University of Washington, Seattle, WA, USA
5. Scripps Institution of Oceanography, La Jolla, CA, USA