Manuscript received August 7, 2020; revised October 5, 2020 and November 12, 2020; accepted December 7, 2020. Date of publication December 17, 2020; date of current version January 13, 2021. This work was supported in part by the National Key R&D Program of China under Grant 2018YFB0504900, Grant 2018YFB0504904, and Grant 2016YFC0200900, in part by the National Natural Science Foundation of China under Grant 42071325, Grant 41571344, Grant 41701379, and Grant 41701422, and in part by LIESMARS Special Research Funding. (Corresponding author: Liqiao Tian.) Hongren Ji, Liqiao Tian, and Ruqing Tong are with the State Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University, Wuhan 430079, China (e-mail: jihongren@whu.edu.cn; tianliqiao@whu.edu.cn; tongruqing@whu.edu.cn).