摘要
针对目标在定位会出现漂移现象,漂移会造成定位不准确,分析了欧式几何空间距离、时间序列以及相关系数等方法的优缺点,对高次差的理论依据进行了阐述、分析和推导,本文根据高次差的理论,提出了一种基于高次差法判断是否出现定位漂移,根据高次差法的特征子序列对非差速度进行试验测试,通过试验研究结果表明:高次差法能有效地探测连续几个定位漂移并判断出现漂移的位置,并对漂移数据进行处理,进而降低定位漂移,提高了定位数据的准确性。
First introduces the reasons of positioning drift, drift will result in inaccurate positioning, analyzes the advantages and disadvantages of the methods such as Euclidean space distance, time sequence and correlation coefficient method. The theoretical basis of high-order difference are described, analyzed and deduced. According to the theory of high-order difference, a method based on the high-order difference method is proposed to determine whether there is a drift in position. According to the characteristics of subsequence of non differential speed test, the experimental results show that high-order difference method can effectively detect several positioning drift and judgment drift position, thereby reducing positioning drift, improve the accuracy of positioning data.
作者
陈石平
廖丁毅
郑健超
林时君
CHEN Shiping;LIAO Dingyi;ZHENG Jianchao;LIN Shijun
出处
《现代导航》
2018年第3期177-182,共6页
Modern Navigation
基金
"基于物联网技术的数字市政在线监控平台"(广东省经济与信息化委员会
广东省财政厅项目(201803030024))支撑
基金项目代号:GDEID2011ISO021
关键词
定位漂移
奇异点
高次差
北斗定位模块
Positioning Drift
Singular Point
High Order Difference
Beidou Positioning Module
