A Precise Multi-GNSS Data Processing Algorithm with Double Difference Observations Based on the Normal Equation Stacking Technique
XIAO Yugang, WANG Zheng, CHEN Hua, YU Shougang
测绘通报 . 2018, (10): 88 -92 .  DOI: 10.13474/j.cnki.11-2246.2018.0322