北斗三号新三频相位模糊度固定方法  

BDS-3 New Triple-frequency Carrier Ambiguity Resolution Method

作　　者：艾力·库尔班 章浙涛 何秀凤[1] KUERBAN Aili;ZHANG Zhetao;HE Xiufeng(School of Earth Sciences and Engineering, Hohai University, Nanjing 211100, China)

机构地区：[1]河海大学地球科学与工程学院,江苏南京211100

出　　处：《测绘科学技术学报》2021年第1期21-27,32,共8页Journal of Geomatics Science and Technology

基　　金：国家自然科学基金项目(41830110,42004014);国家重点研究发展计划项目(2018YFC1503603);江苏省自然科学基金青年基金(BK20200530);中国博士后科学基金资助项目(2020M671324);江苏省博士后科研资助计划项目(2020Z412);大地测量与地球动力学国家重点实验室开放基金项目(SKLGED2020-3-8-E);轨道交通工程信息化国家重点实验室(中铁一院)开放课题项目(SKLK20-07);南京市留学人员科技创新项目。

摘　　要：针对北斗三号新的三频观测值,通过分析BDS-3三频线性组合观测值特性,选取高质量组合观测值,采用无几何相关GF(Geometry-Free)模型和无几何无电离层相关GIF(Geometry-Ionospheric-Free)模型分别对实测BDS-3卫星数据进行单历元三频相位模糊度解算TCAR(Triple-frequency Carrier Ambiguity Resolution)。试验结果表明,短基线时GF模型模糊度误差都在0.5周以内,且模糊度固定成功率都在88.43%以上;中长基线时GF模型模糊度固定能力明显降低,宽巷下降到73.47%,窄巷也只有25.44%。GIF模型在中长基线解算时相比于GF模型具有更好的模糊度固定能力。中长基线GIF模型宽巷模糊度固定成功率达85.31%,相对于GF模型提高了13%。中长基线GIF模型窄巷模糊度固定成功率在43.58%以上,相对于GF模型提高了51%。According to the new triple-frequency observations of BDS-3,characteristics of the triple-frequency linear combination observations of BDS-3 are firstly analyzed,and then the high-quality combined observations are selected,finally geometry-free(GF)model and geometry-ionospheric-free(GIF)model are adopted to perform single-epoch triple-frequency carrier ambiguity resolution(TCAR)on the BDS-3 data.Experimental results show that ambiguity errors of GF model is within 0.5 cycles for the short baseline,and the ambiguity resolution success rates are higher than 88.43%.For the medium-long baseline,the ambiguity resolution success rate of GF model reduces significantly,as wide lane drops to 73.47%and narrow lane to 25.44%.Comparing with GF model,GIF model has a better ambiguity fixing ability when solving for the medium-long baseline.The ambiguity resolution success rate of wide lane is above 85.31%,which is 13%higher than that of the GF model,and narrow lane above 43.58%,which is 51%higher than that of GF model.

关 键 词：北斗三号系统 三频线性组合 三频相位模糊度解算 GF模型 GIF模型 

分 类 号：P228[天文地球—大地测量学与测量工程]