基于模糊度相关法的北斗三频载波单历元基线解算

发布时间：2018-04-24 12:32

本文选题：北斗 + 最小二乘配置　；参考：《武汉大学学报(信息科学版)》2016年11期

【摘要】：单历元基线解算一直是卫星导航定位中的热点和难点,随着北斗导航定位系统的全面组网,三频载波可以形成更多优良的组合观测值,有效地提高了单历元基线解算的精度和可靠性。本文在传统TCAR的基础上引入电离层延迟先验信息,将电离层延迟与位置参数和模糊度作为未知参数,采用最小二乘配置原理一并求解。同时,采用考虑电离层延迟影响的模糊度相关法约束模糊度搜索空间。结果表明,加入电离层延迟先验信息可以较大提高单历元模糊度固定的成功率;而采用考虑电离层延迟的模糊度相关法可以缩小模糊度搜索空间,有效地提高单历元模糊度解算的成功率和可靠性。
[Abstract]:The calculation of single epoch baseline has always been a hot and difficult point in satellite navigation and positioning. With the comprehensive network of Beidou navigation and positioning system, the three-frequency carrier can form more excellent integrated observation values. The accuracy and reliability of the baseline solution of single epoch are improved effectively. In this paper, the prior information of ionospheric delay is introduced on the basis of traditional TCAR. The ionospheric delay, position parameter and ambiguity are taken as unknown parameters, and the least square collocation principle is used to solve the problem. At the same time, the ambiguity correlation method considering the influence of ionospheric delay is used to constrain the ambiguity search space. The results show that the success rate of fixed ambiguity of single epoch can be greatly improved by adding the prior information of ionospheric delay, and the ambiguity search space can be reduced by using the ambiguity correlation method considering ionospheric delay. The success rate and reliability of ambiguity resolution of single epoch are improved effectively.
【作者单位】：中国矿业大学国土环境与灾害监测国家测绘地理信息局重点实验室;江苏省资源环境信息工程重点实验室;
【基金】：国家自然科学基金(41074010) 高等学校博士学科点专项科研基金(20130095110022) 江苏高校优势学科建设工程项目(SZBF2011-6-B35)~~
【分类号】：P228.4

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