摘要
温度是影响野外激光测距精度的关键参数。为定量评估其影响并提供测量不确定度分析依据,依托野外基线场传感器网络,以60个传感器平均温度为参考,采用传感器均匀增量加密温度补偿法,将传感器的数量从1个逐步增加到33个的平均温度代表全线温度对温度数据进行分析。结果显示:随传感器数量增加,测距误差均值减少98.2%,标准偏差降低93.7%;温度测量不确定度从0.89℃降至0.05℃,减少94.4%,测距测量不确定度从1 091μm降至64μm,减少94.2%。研究表明,在温度稳定时段作业基础上提高传感器采集密度,可提高温度数据准确性与稳定性、降低测距误差。研究结果可为经济布设温度传感器提供数据支撑。
Temperature is a key parameter affecting the accuracy of outdoor laser ranging.To quantitatively assess the impact of temperature on ranging,a basis for accurate measurement uncertainty analysis in outdoor precision ranging is provided.Utilizing a sensor network established along the outdoor baseline,the average temperature from 60 sensors along the line serves as a reference value.By employing a uniformly incremented temperature compensation method,the number of sensors is gradually increased from 1 to 33,with the average temperature representing the overall temperature along the line for data analysis.The results indicate that as the number of sensors increases,the mean ranging error decreases by 98.2%,and the standard deviation reduces by 93.7%.Additionally,the temperature measurement uncertainty decreases from 0.89℃to 0.05℃,a reduction of 94.4%,while the ranging measurement uncertainty decreases from 1091μm to 64μm,a reduction of 94.2%.By selecting relatively stable temperature periods for operations and appropriately increasing the sensor collection density,this approach can enhance the accuracy and stability of temperature data for outdoor ranging,thereby reducing ranging errors.Furthermore,this method provides significant data support for the economical deployment of temperature sensors.
作者
宋淑妤
缪东晶
蔡晋辉
王德利
刘晓东
唐小聪
李建双
SONG Shuyu;MIAO Dongjing;CAI Jinhui;WANG Deli;LIU Xiaodong;TANG Xiaocong;LI Jianshuang(Collage of Metrology&Measurement Engineering,China Jiliang University,Hangzhou,Zhejiang 310018,China;National Institute of Metrology,Beijing 100029,China;Inner Mongolia Autonomous Region Metrology Testing Research Institute,Hohhot,Inner Mongolia 010050,China;Nanjing Institute of Measurement and Testing Technology,Nanjing,Jiangsu 210049,China)
出处
《计量学报》
北大核心
2025年第9期1241-1249,共9页
Acta Metrologica Sinica
基金
国家重点研发计划(2023YFF0612701)
国家市场监督管理总局科技计划项目(2022MK155)。
关键词
几何量计量
大长度测量
测距精度
温度测量
传感器阵列
数据分析
geometric metrology
long distance measurement
distance measurement accuracy
temperature measurement
sensor array
data analysis
