| 一种新的中长基线BDS三频模糊度快速解算方法 |
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| 引用本文： | 王鹏旭,吕志伟,杨东森,邓科,杨光.一种新的中长基线BDS三频模糊度快速解算方法[J].测绘通报,2017(4). |
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| 作者姓名： | 王鹏旭 吕志伟 杨东森 邓科 杨光 |
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| 作者单位： | 1. 信息工程大学,河南郑州450001;北斗导航应用技术河南省协同创新中心,河南郑州450001;2. 华南师范大学,广东广州,510000 |
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| 摘 要： | 虽然TCAR能够实现短基线三频模糊度单历元解算,但由于电离层延迟及观测噪声等的影响,中长基线三频模糊度快速解算仍然是导航定位的一大难点。本文提出了一种新的无几何无电离层三频模糊度解算方法。该方法通过对伪距观测值赋予不同的权重,辅助宽巷及窄巷消除电离层残差的影响,使宽巷及窄巷求解只受观测噪声的影响;然后通过多历元的平滑获取宽巷及窄巷模糊度值。通过实测BDS三频长基线数据表明,相比经典TCAR算法,该方法可大大改善中长基线模糊度的求解精度,经过数据平滑并验证基本可以实现中长基线模糊度的快速解算。
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| 关 键 词： | 三频组合 TCAR/CAR 双差电离层延迟 无几何无电离层 |
A New Methodology of Medium and Long Range BeiDou Triple-frequency Rapid Ambiguity Resolution |
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| WANG Pengxu,L Zhiwei,YANG Dongsen,DENG Ke,YANG Guang.A New Methodology of Medium and Long Range BeiDou Triple-frequency Rapid Ambiguity Resolution[J].Bulletin of Surveying and Mapping,2017(4). |
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| Authors: | WANG Pengxu L Zhiwei YANG Dongsen DENG Ke YANG Guang |
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| Institution: | WANG Pengxu,L(U) Zhiwei,YANG Dongsen,DENG Ke,YANG Guang |
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| Abstract: | Although TCAR can realize three short baseline frequency to achieve fuzzy degree of single epoch algorithm,due to the influence of ionospheric delay and observation noise,long baseline three frequency ambiguity fast calculating is still a big difficulty of navigation and positioning.This paper presents a new method without geometric ionosphere three frequency ambiguity calculating.The method based on pseudorange observation with different weights,auxiliary lane wide and narrow lanes can eliminate the influence of ionosphere residual,make wide lane and narrow lanes to solve only affected by the observation noise,and then through the epoch more smooth get wide lane and narrow lanes fuzzy degree of value.Through the measured frequency BDS three long baseline data shows that compared with the classical TCAR algorithm,this method can greatly improve the solving accuracy of long baseline ambiguity,data smoothing and verification can achieve fast calculating of long baseline ambiguity |
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| Keywords: | three frequency combination TCAR/CAR double difference ionospheric delay no geometry and the ionosphere |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
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