Precise baseline determination for the four-satellite InSAR constellation HT-01 with ambiguity resolution constraints - Dachen Peng; Shibo Guo; Defeng Gu; Kai Shao; Houzhe Zhang; Ruiyun Yang; Jufeng Lu; Jiangkai Liu; Haoseng Wang; LiuPeng Huang (Advances in Space Research, 2025)