摘要
针对大气湍流强度测量中背景噪声远大于测量信号的问题,根据测试原理分析了测量背景噪声的来源和特征,提出时段均值作差的数据处理方法,采用实时处理软件代替了复杂的硬件处理系统,消除了测试信号中的背景噪声,提高了测量灵敏度,使系统温差测量下限达到0.002℃,且系统的可靠性高。
In atmosphere turbulence intensity measurement, because the background noise is greater than the measured signal, a novel data process method that is mean difference in time segment is proposed through analyzing the noise sources and characters. The real time processing software replaces the complex hardware to eliminate the background noise, and the measurement sensitivity is enhanced. The lower limit of temperature difference reaches 0. 002℃.
出处
《计算机测量与控制》
CSCD
2006年第5期594-596,共3页
Computer Measurement &Control
关键词
信息处理
微弱信号检测
测量灵敏度
information processing
weak signal detection
measurement sensitivity
