基于模糊度相关法的北斗三频载波单历元基线解算  

BeiDou Triple-frequency Carrier Single-epoch Ambiguity Resolution Based on Ambiguity Related Method

作　　者：姚一飞[1,2] 高井祥[1,2] 李增科[1,2] 谭兴龙[1,2] 韩厚增[1,2] 

机构地区：[1]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,江苏徐州221116 [2]江苏省资源环境信息工程重点实验室,江苏徐州221116

出　　处：《武汉大学学报（信息科学版）》2016年第11期1433-1439,共7页Geomatics and Information Science of Wuhan University

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)~~

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。Single-epoch ambiguity resolution is always a challenging issue in the satellite navigation and positioning.With the development of BeiDou navigation and positioning system,the combination observations of three-frequency carrier phase can combine more excellent combination data,which could effectively improve the accuracy and reliability of the single-epoch ambiguity resolution.This paper adds a priori information of ionospheric delays,regards it and the location parameters and ambiguity as unknown parameters to be solved based on the traditional TCAR method and least squares collocation.Meanwhile,the ambiguity search space to be constricted by the ambiguity related method of considering ionospheric delays.The results showed that：add a prior information of ionospheric delays in unknown parameters can greatly improve the single-epoch ambiguity success rate;the ambiguity related method of considering ionospheric delays correction can reduce the ambiguity search space,and effectively improved the success rate and the reliability of single-epoch ambiguity resolution.

关 键 词：北斗 最小二乘配置 模糊度相关法 单历元 三频载波相位 

分 类 号：P228.41[天文地球—大地测量学与测量工程]