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| 自适应换站算法及其在长距离机载GPS动态相对定位中的应用 | |
| 引用本文： | 王潜心,徐天河,许国昌.自适应换站算法及其在长距离机载GPS动态相对定位中的应用[J].测绘学报,2011,40(4). |
| 作者姓名： | 王潜心 徐天河 许国昌 |
| 作者单位： | 1. 中南大学地球科学与信息物理学院,湖南长沙,410083 2. 西安测绘研究所,陕西西安710054／德国地学研究中心,德国波茨坦14473 3. 德国地学研究中心,德国波茨坦14473 |
| 基金项目： | 国家863计划(2006AA12Z322); 国家自然科学基金(40604003); 高等学校全国优秀博士学位论文作者专项资金(2007B51); 中国博士后科学基金(20080430148;200902444) |
| 摘 要： | 提出采用＂自适应换站＂法来解决单基线处理模式难以满足长距离动态定位的问题。该方法的主要思想是：整个解算过程始终保持单基线的动态定位模式,当发现流动站与原参考站间的距离大于流动站与其他参考站间的距离时,自动更换周围最近的参考站作为新参考站;对换站前后的数据设置一定时间的重叠段,利用等价消参法将换站前后的数据进行严格的自适应融合,以保持整个解算过程的连续性。通过对实测机载数据的解算,证明该方法不仅可以克服因载体飞行距离过远而导致的定位精度下降,而且能够避免因换站所引起的前后解的不连续,计算结果表明该方法的定位精度约为2 cm。 |
| 关 键 词： | 单基线 动态相对定位 等价消参 双差模糊度 |
Adaptively Changing Reference Station Algorithm and Its Application in GPS Long Range Airborne Kinematic Relative Positioning |
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| WANG Qianxin,XU Tianhe,XU Guochang.School of Geosciences , Info-Physics,Central South University,Changsha ,China,.Xi'an Research Institute of Surveying , Mapping,Xi'an.Adaptively Changing Reference Station Algorithm and Its Application in GPS Long Range Airborne Kinematic Relative Positioning[J].Acta Geodaetica et Cartographica Sinica,2011,40(4). | |
| Authors: | WANG Qianxin XU Tianhe XU GuochangSchool of Geosciences Info-Physics Central South University Changsha China Xi'an Research Institute of Surveying Mapping Xi'an |
| Institution: | WANG Qianxin1,XU Tianhe2,3,XU Guochang31.School of Geosciences and Info-Physics,Central South University,Changsha 410083,China,2.Xi'an Research Institute of Surveying and Mapping,Xi'an 710054,3.Department of Geodesy and Remote Sensing,GeoForschungsZentrum,Potsdam 14473,Germany |
| Abstract: | A method of adaptively changing reference station is developed to make the single baseline model suitable for the long range airborne positioning.The basic idea is that the reference station will be automatically replaced by the nearest one,when the distance between kinematic station and original reference station is longer than the maximum distance decided by the software.The method of equivalently eliminating parameters is used to combine the observation data between new and original reference stations.To... |
| Keywords: | single baseline kinematic relative positioning equivalently eliminated parameters double difference ambiguity |
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