Funding for this research was provided by:
Ministry of National Defense (16-force support-1)
Korea Institute of Industrial Technology (kitech IZ-20-0004)
Gyeonggi-Do Technology Development Program (kitech JA-20-0001)
Received: 11 May 2020
Accepted: 23 October 2020
First Online: 25 December 2020
: The authors declare that they have no competing interests.