摘要
利用时域中的卷积积分法求解测温传感器响应方程 ,对其响应特性尤其是自动平均能力进行了数学描述 ,发现每个时刻测温传感器输出值 ,是此时刻之前一段时间内外界温度输入值的不等权平均值 ,其权重随着与输出时刻的接近呈指数增加。进一步应用这个结论讨论了不同来源温度资料的同化问题 ,对资料同化技术的提高有一定的指导意义。
Based on the response eqution of temperature-sensing element solved by means of convolution integral in time domain,the response of the element,especially its automatic average ability,is described,from which it is discovered that the output of the element at a certain time is a weighted average of the input of environmental temperature in the previous time.The weight increases exponentially as it approaches to the output time.This result is used to discuss the problems concerning assimilation of different temperature data,which is of significance for the improvement of the skill of data-assimilation.
出处
《南京气象学院学报》
CSCD
北大核心
2003年第4期481-488,共8页
Journal of Nanjing Institute of Meteorology
基金
国家自然科学基金项目 (4 0 1 75 0 0 3 )
关键词
测温传感器
响应特性
资料同化
不等权平均
temperature-sensing element
response
weighted arithmetic average
data-assimilation
