测距系统中运用误差系数减小测距误差的方法  

A Method for Reducing Ranging Error by Using Error Coefficient in Ranging System

作　　者：葛嘉诚 戴尔晗[1] GE Jia-cheng;DAI Er-han(College of Automation,Nanjing University of Posts and Telecommunications,Nanjing 210003,China)

机构地区：[1]南京邮电大学自动化学院,江苏南京210003

出　　处：《软件导刊》2020年第11期96-99,共4页Software Guide

摘　　要：为减小测距误差,提出一种在一个未采用/采用高频率稳定度晶振的测距系统中,运用误差系数减小测距误差的方法。在测距系统中,由于基站处时钟偏移的影响会造成响应时间误差,又由于基站间传递信号时空气折射率会对信号传递速度造成影响,进而影响信号传递时间,将上述两个造成测距误差的因素组合为一个误差系数,通过推导的公式计算出误差系数后,再带入之后的测距计算中,便可减小测距误差。经实验验证,在引入误差系数后,测距误差相比未引入误差系数时减小了0.4%,可满足高精度测距的需求。In order to reduce the ranging error,this paper proposes a method to reduce the ranging error in a ranging system without/with a high-frequency stability crystal oscillator.In the ranging system,the response time error will be caused by the influence of the clock offset at the base station,and the air refractive index will affect the signal transmission speed when the signal is transmitted be⁃tween the base stations,and then the signal transmission time.The above two factors that cause ranging errors are combined into one er⁃ror coefficient,and the error coefficient is calculated by deriving the formula,and then brought into the subsequent ranging calculation to reduce the ranging error.After experimental verification,after introducing the error coefficient,the ranging error ratio is reduced by 0.4%,Meet the needs of high-precision ranging.

关 键 词：测距误差 时钟偏移 空气折射率 

分 类 号：TP301[自动化与计算机技术—计算机系统结构]