双频相关约束的动对动北斗单频整周模糊度直接解法

发布时间：2018-01-09 02:27

本文关键词：双频相关约束的动对动北斗单频整周模糊度直接解法　出处：《电光与控制》2016年11期 　论文类型：期刊论文

【摘要】：针对多频组合测量时实际可用组合少、组合模糊度难以正确固定等问题,提出了一种基于双频相关约束直接求解动对动北斗单频模糊度的算法,该算法在正确固定一组组合模糊度的基础上,根据B1,B2两种频率双差方程之间的相关性,利用组合模糊度直接求解单频模糊度,然后通过组合测量值的均方误差确定单频模糊度的误差范围,最后采用OVT自适应门限检验方法得到正确的单频模糊度。试验结果表明,当组合测量均方误差小于1/4波长时,该算法仅需一组组合模糊度即可正确解算出B1,B2单频模糊度,能够较好地适用于动对动高精度相对定位。
[Abstract]:In order to solve the problems such as few combination and difficult to fix the combination ambiguity in multi-frequency combination measurement, a new algorithm based on dual-frequency correlation constraint is proposed to solve the single frequency ambiguity of moving Beidou directly. Based on the correct fixing of a group of combined ambiguity, the combined ambiguity is directly used to solve the single frequency ambiguity according to the correlation between the two frequency double difference equations. Then the error range of the single frequency ambiguity is determined by the mean square error of the combined measurement value, and the correct single frequency ambiguity is obtained by using the OVT adaptive threshold test method. When the mean square error of combined measurement is less than 1/4 wavelength, the algorithm only needs a group of combination ambiguity to solve the single frequency ambiguity of B _ 1 / B _ 2 correctly.
【作者单位】：空军工程大学信息与导航学院;中国人民解放军94878部队;中国人民解放军93868部队;
【基金】：国家自然科学基金(61273049)
【分类号】：TN967.1
【正文快照】： 0引言随着多模多频接收机的不断应用与发展,基于多频的组合测量技术已成为当前研究热点之一[1]。在动对动高精度相对定位中,多频测量组合技术具有波长较长、模糊度容易解算等优势[2],但同时也会带来测量误差放大,降低了测量精度[3],有时甚至导致组合整周模糊度难以准确固定,因

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