BDS-3双频载波相位组合平滑伪距算法  

BDS-3 dual frequency carrier phase combination pseudo-range smoothing algorithm

作　　者：冀海磊 牛雪峰[1] JI Hailei;NIU Xuefeng(College of Geo-exploration Science and Technology,Jilin University,Changchun 130026,China;Unit 31693 of the Chinese People's Liberation Army,Harbin 150036,China)

机构地区：[1]吉林大学地球探测科学与技术学院,长春130026 [2]中国人民解放军31693部队,哈尔滨150036

出　　处：《世界地质》2022年第3期607-613,631,共8页World Geology

基　　金：国家自然科学基金项目(42077242)。

摘　　要：为分析载波相位平滑伪距算法在BDS-3短基线相对定位中的作用,以一组自测试短基线实测数据为实验数据,采用Hatch滤波算法,分别进行了滤波前后4种BDS-3双频短基线解算实验。实验结果表明,4种BDS-3双频组合短基线相对定位精度较优,E方向定位精度优于2 cm,N方向定位精度优于1 cm,U方向定位精度优于3 cm。Hatch滤波能有效消除原始伪距随机误差,但无法消除系统误差;Hatch滤波能提升BDS-3双频短基线相对定位精度,对高程方向平滑性优于水平方向,提升量都在1%以内。In order to analyze the effect of the carrier phase pseudo-range smoothing algorithm in BDS-3 short baseline relative positioning,a group of self-test short baselines was taken as the experiment data.Using hatch filtering algorithm,four BDS-3 dual frequency short baseline calculation experiments before and after filtering were carried out.The experimental results showed that the relative positioning accuracy of the four BDS-3 dual-frequency combination short baselines was better,the positioning accuracy in the E direction was better than 2 cm,the positioning accuracy in the N direction was better than 1cm,and the positioning accuracy in the U direction was better than 3 cm.Hatch filtering can effectively eliminate the original pseudo-range random error,but it cannot eliminate the system error.Hatch filtering can improve the relative positioning accuracy of BDS-3 dual-frequency short baseline,the smoothness of elevation direction was better than that of horizontal direction,and the lifting amount was within 1%.

关 键 词：BDS-3 短基线 相对定位 HATCH滤波 

分 类 号：TP75[自动化与计算机技术—检测技术与自动化装置]