摘要
传统的线性调频连续波(LFM-CW)雷达测距系统很难克服由压控振荡源的非线性以及很低的频率分辨率对其测距精度的影响,本文提出了基于直接数字式频率合成(DDS)这一新技术,由CPLD进行高速控制,从而实现LFM-CW雷达测距系统的方案。结合关键模块的框图,阐明了其实现原理与方法。
It is very difficult for traditional linear FM-CW radar ranging system to overcome the influence to the range precision made by the sweep nonlinearity and low frequency resolution of voltage controlled oscillator （VCO）. This paper gives a scheme to achieve the LFM-CW radar ranging system which is based on DDS and controlled by CPLD, clarifies the theory and method with frames of key modules.
出处
《微计算机信息》
北大核心
2006年第08Z期191-193,共3页
Control & Automation
基金
国家自然科学基金(40275010)资助
