Expression and information hierarchical authorization of BDS reference station observation data based on states and residual
ZHOU Letao, HUANG Dingfa, YUAN Linguo, FENG Wei, GONG Xiaoying, TIAN Yumiao, ZHANG Xi, ZHAO Yinghao
Acta Geodaetica et Cartographica Sinica . 2020, (10): 1265 -1274 .  DOI: 10.11947/j.AGCS.2020.20190300