摘要
在精密测距系统(DME/P)中,在对接收信号数字化之后,用对信号求导的方法来代替传统的延迟衰减比较技术DAC(Delay Attenuate Compare)对定时点进行选取。结果表明,求导的方法不仅对信号的幅度是无关的,而且对形状的变化也是不敏感的。
In the DME/P system, after A/D, using the method of derivative to find the time-point accutately to replace the way of DAC （ Delay Attenuate Compare）. The result indicates that this method is not only irrespective about the amplitude but also sensitive to the change of figure.
出处
《科学技术与工程》
2009年第20期6187-6189,6196,共4页
Science Technology and Engineering
