变粒度搜索算法与整周模糊度解算

doi:10.3778/j.issn.1002-8331.2009.21.011

计算机工程与应用 ›› 2009, Vol. 45 ›› Issue (21): 44-47.DOI: 10.3778/j.issn.1002-8331.2009.21.011

变粒度搜索算法与整周模糊度解算

康荣雷^1，2，舒兰¹，滕云龙²

1.电子科技大学应用数学学院，成都 610054
2.电子科技大学电子科学与技术研究院，成都 610054

收稿日期:2008-04-24 修回日期:2008-07-28 出版日期:2009-07-21 发布日期:2009-07-21
通讯作者: 康荣雷

Searching algorithm with granularity changing and GNSS integer ambiguity estimation

KANG Rong-lei ^1，2，SHU Lan¹，TENG Yun-long²

1.School of Applied Mathematics，University of Electronic Science and Technology of China，Chengdu 610054，China
2.Research Institute of Electronic Science and Technology，University of Electronic Science and Technology of China，Chengdu 610054，China

Received:2008-04-24 Revised:2008-07-28 Online:2009-07-21 Published:2009-07-21
Contact: KANG Rong-lei

摘要/Abstract

摘要： LAMBDA方法应用于GNSS单频单点载波相位定位时，其整周模糊度的搜索域过大，解算速度过慢，制约了单频单点精确定位技术的应用。针对这一问题，结合粗糙整数映射理论，提出变粒度搜索算法，通过改善整周模糊度搜索区域的拓扑结构，并采用有粒度的粗糙整数作为搜索单元，可有效提高搜索效率。仿真结果表明，基本实现了单频单点载波相位准实时定位。

关键词: 全球导航卫星系统（GNSS）, 整周模糊度, 粗糙整数映射, 变粒度搜索

Abstract: The traditional algorithm of GNSS orientation using LAMBDA for single frequency receiver，can’t estimate the integer ambiguity in a little time，sometimes，can’t find the exact value.Based on the theory of rough integer mapping，a new algorithm for the estimation of integer ambiguity is presented to solve the problems.Searching algorithm with granularity changing can improve the searching efficiency of the integer ambiguity，and can deal with the problem of the GNSS carrier phase measurement in real time.

Key words: Global Navigation Satellites System（GNSS）, integer ambiguity, rough integer mapping, granularity changing

康荣雷^1，2，舒兰¹，滕云龙². 变粒度搜索算法与整周模糊度解算[J]. 计算机工程与应用, 2009, 45(21): 44-47.

KANG Rong-lei ^1，2，SHU Lan¹，TENG Yun-long². Searching algorithm with granularity changing and GNSS integer ambiguity estimation[J]. Computer Engineering and Applications, 2009, 45(21): 44-47.

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变粒度搜索算法与整周模糊度解算

Searching algorithm with granularity changing and GNSS integer ambiguity estimation

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