惯性辅助强多径环境中的北斗三频周跳探测与修复

发布时间：2018-06-04 01:13

本文选题：多路径 + 北斗　；参考：《测绘学报》2016年S2期

【摘要】：针对北斗三频信号,引入了惯性信息辅助周跳探测与修复,建立了北斗/INS松组合模型,提高了多径误差严重影响下的BDS周跳探测成功率和修复率。在常规伪距-相位组合与几何无关组合探测三频周跳的基础上,提出了INS定位辅助的北斗三频组合法,构建了INS辅助的周跳决策量,分析了INS定位误差对周跳探测的影响。该方法克服了周跳探测受伪距观测值精度影响的不足,实现了北斗系统多径环境中的小周跳探测。试验采用船载INS/BDS三频组合系统进行数据实测分析,结果表明,在水面强多径噪声环境导致传统三频探测模型失效的情况下,该方法显著提高了探测成功率与修复率,并适用于低频北斗观测数据。
[Abstract]:Aiming at Beidou three-frequency signal, the inertial information is introduced to assist cycle slip detection and repair, and a Beidou / ins combination model is established, which improves the success rate and repair rate of BDS cycle slip detection under the serious influence of multipath error. Based on the conventional pseudo-range-phase combination and geometric independent combination, the Beidou three-frequency combination method for INS location-assisted detection is proposed. The INS assisted cycle slip decision quantity is constructed, and the influence of INS positioning error on cycle slip detection is analyzed. This method overcomes the shortcoming that the cycle slip detection is influenced by the precision of pseudo-range observation value, and realizes the small cycle slip detection in the multi-path environment of Beidou system. The experimental results show that the method improves the detection success rate and repair rate significantly when the traditional three-frequency detection model fails due to the strong multi-path noise on the surface of the water, using the shipborne INS/BDS three-frequency combination system. And suitable for low frequency Beidou observation data.
【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;中国矿业大学环境与测绘学院;
【基金】：国土资源部公益性行业科研专项(201411007-1)~~
【分类号】：P228.4

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