BDS短基线单历元差分定位算法  

A BDS Single-Epoch Differential Positioning Algorithm for Short Baselines

作　　者：汪进新 韩静 王利[1,2] 张勤 黄观文[1,2] 

机构地区：[1]长安大学地质工程与测绘学院,西安市雁塔路126号710054 [2]地理信息工程国家重点实验室,西安市雁塔路126号710054

出　　处：《大地测量与地球动力学》2018年第1期64-67,共4页Journal of Geodesy and Geodynamics

基　　金：中央高校基本科研业务费专项(310826172006;310826172202;310826173101)~~

摘　　要：针对BDS短基线单历元差分定位中双差法方程严重病态的问题,采用TIKHONOV正则化准则进行改善。计算获得可靠的浮点解及其对应的方差协方差阵,再运用部分模糊度固定策略,采用LAMBDA方法进行模糊度固定获取准确的固定解,达到cm级的BDS实时定位效果。Aiming at the serious ill-posed problem of double-difference equations in BDS short baseline single epoch differential positioning, we use the TIKHONOV regularization criterion to improve the ill-posed problem, and then obtain the reliable floating point solution and its corresponding variance covariance matrix. The partial ambiguity fixed strategy, using the LAMBDA method to obtain an ac- curate fixed solution, is then applied to achieve centimeter results in BDS real-time positioning.

关 键 词：BDS差分定位 单历元 病态 正则化 实时 

分 类 号：P228[天文地球—大地测量学与测量工程]