Funding for this research was provided by:
National Natural Science Foundation of China (61872401)
Program of the CETC Key Laboratory of Aerospace Information Applications, China (SXX18629T022)
the Industrial Internet Innovation and Development Project 2018 from the Ministry of Industry and Information Technology of China
Article History
Received: 23 July 2018
Accepted: 14 December 2018
First Online: 5 September 2019
Compliance with ethics guidelines
: Jiao ZHANG, Tao HUANG, Shuo WANG, and Yun-jie LIU declare that they have no conflict of interest.