About the Authors

Jian Shen

shenjian2018@126.com

Affiliation Institute of Information and Navigation, Air Force Engineering University, Xi’an, Shaanxi, China

Jingbo Xia

Contributed equally to this work with: Jingbo Xia, Shufu Dong, Xiaoyan Zhang, Kai Fu

Affiliation Tan KahKee College, Xiamen University, Xiamen, Fujian, China

Shufu Dong

Contributed equally to this work with: Jingbo Xia, Shufu Dong, Xiaoyan Zhang, Kai Fu

Affiliation Institute of Information and Navigation, Air Force Engineering University, Xi’an, Shaanxi, China

Xiaoyan Zhang

Contributed equally to this work with: Jingbo Xia, Shufu Dong, Xiaoyan Zhang, Kai Fu

Affiliation Institute of Information and Navigation, Air Force Engineering University, Xi’an, Shaanxi, China

Kai Fu

Contributed equally to this work with: Jingbo Xia, Shufu Dong, Xiaoyan Zhang, Kai Fu

Affiliation Institute of Information and Navigation, Air Force Engineering University, Xi’an, Shaanxi, China

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceptualization: JS. Funding acquisition: XZ. Investigation: KF. Methodology: JS. Supervision: SD. Writing – original draft: JS. Writing – review & editing: JX.