Application of combination model of quadric surfaces and least squares collocation in GPS height anomaly fitting
Lü Jianwei, ZHANG Zhihua, ZHANG Xinxiu, LIU Zuyu
Bulletin of Surveying and Mapping . 2020, (5): 127 -129,133 .  DOI: 10.13474/j.cnki.11-2246.2020.0160