摘要
由于电子仪器中的传感器、测量电路、放大器等部件不可避免地存在温度漂移和时间漂移,会给仪器引入零位误差和增益误差,所以不同仪器之间存在明显的系统误差。在蟠龙峰铜矿进行TEM测深时,使用了两台Phoenix公司生产的V8仪器,由于两组数据存在明显的系统差,给数据处理及异常解释带来了较大的困难。从数值分析的角度,利用最小二乘法曲线拟合,对不同仪器间的系统误差进行了校正,校正精度小于3%,远小于10%的质检精度,可以满足生产需要。在Intel Visual Fortan程度开发平台上,编程实现了系统误差的自动校正。
The inevitable temperature drift and time drift in the sensor,measuring circuit and amplifier of the electronic instruments will generate zero position error and gain error of instruments.So there exists obvious system errors in different instruments.The authors used two sets of Phoenix Company products which are V8 receivers in the Panlongfeng copper mine for TEM sounding.Because of system errors in these data,there are a lot of difficulties in data processing and appraisal of anomalies.In this paper,from the angle of numerical analysis,the authors corrected the system errors in different instruments by using the method of least squares curve fitting.The results show that the precision of correction is lower than 3%,and the ordinary precision of quality check should be lower than 10%.Hence the method of correction is effective and practical.In the Intel Visual Fortan developing platform,the authors achieved automatic correction of the system error.
出处
《物探与化探》
CAS
CSCD
2013年第2期287-290,共4页
Geophysical and Geochemical Exploration
关键词
V8电法工作站
系统误差
数值分析
最小二乘法
校正残差
V8 electric method work station
system error
numerical analysis
least square method
residual error correction
