| BDS短基线单历元差分定位算法 |
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| 引用本文： | 汪进新,韩静,王利,张勤,黄观文. BDS短基线单历元差分定位算法[J]. 大地测量与地球动力学, 2018, 38(1): 64-67 |
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| 作者姓名： | 汪进新 韩静 王利 张勤 黄观文 |
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| 作者单位： | 长安大学地质工程与测绘学院;地理信息工程国家重点实验室; |
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| 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。
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| 关 键 词： | BDS 差分定位 单历元 病态 正则化 实时 |
A BDS Single-Epoch Differential Positioning Algorithm for Short Baselines |
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| WANG Jinxin,HAN Jing,WANG Li,ZHANG Qin,HUANG Guanwen. A BDS Single-Epoch Differential Positioning Algorithm for Short Baselines[J]. Journal of Geodesy and Geodynamics, 2018, 38(1): 64-67 |
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| Authors: | WANG Jinxin HAN Jing WANG Li ZHANG Qin HUANG Guanwen |
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| Abstract: | 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 accurate fixed solution, is then applied to achieve centimeter results in BDS real-time positioning. |
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| Keywords: | BDS differential positioning single epoch ill posed regularization real-time |
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