短基线GPS定向系统及搜索模糊度优化算法的研究  

Research of phase integer ambiguity search optimal algorithm and short baseline GPS heading system

作　　者：王先全[1] 吴敏[2] 冯济琴[1] 董淳[1] 

机构地区：[1]重庆工学院电子学院,重庆400050 [2]重庆工学院车辆学院,重庆400050

出　　处：《测绘科学》2009年第4期47-49,共3页Science of Surveying and Mapping

基　　金：国家自然科学基金(50575235);重庆市自然科学基金(2008BB2336)

摘　　要：GPS载波相位测量相对定位可以达到毫米级精度,利用GPS载波相位测量方向可以达到2密位的精度。研究了载波相位双差测量方向的原理和应用最小二乘法解算基线矢量的算法,详细讨论快速解算整周模糊度的优化算法。实验结果表明,应用双GPS测量方向的原理和搜索模糊度优化算法正确,其定向精度达2密位,解算时间小于0.3秒,并运用于产品中。The relative positioning precision based on GPS carrier-phase measuring can achieve minimeter level. Mso, the high precision of two milunitofangularmeasure can be obtained in measuring direction with it. This paper introduced firstly the theory of direction measuring using double-differential carrier-phase and the baseline vector using least-squares method. Secondly, algorithms for fast solving integer ambiguity were analyzed in detail. Finally, the experiments indicated that the method is correct. Its positioning preeision could be two milunitofangularmeasure, time of resolution is less than 0. 3 second, and the technique has been applicated in product.

关 键 词：GPS 载波相位 整周模糊度 短基线 

分 类 号：TM966[电气工程—电力电子与电力传动]