高炉料位测量雷达系统的设计与仿真  

The design and simulation of the blast furnance level measureing system

作　　者：陈先中[1] 丁爱华[1,2] 候庆文[1] 

机构地区：[1]北京科技大学信息工程学院,北京100083 [2]唐山学院,河北唐山063000

出　　处：《微计算机信息》2009年第19期171-173,共3页Control & Automation

基　　金：基金申请人:陈先中;项目名称:高炉雷达关键技术研制及料面连续3D监测系统;基金颁发部门:国家"863"计划探索项目基金委(2006AA04Z177)

摘　　要：为解决高炉料位测量存在的测量难度大、精度不高等问题,设计了FMCW微波雷达料位测量系统,并从雷达中频信号处理的角度出发,提出一种自适应高精度(AHPE)算法。该算法通过一次快速傅里叶变换(FFT),将幅值最大和次大的谱线之间确定为的频率细化范围,通过比值法对细化范围进行修正,在此频率范围内用自适应抽取ZOOM-FFT算法估算出频率值,仿真表明,在0～50米距离范围内,达到了高精度、高稳定性的要求。We design the FMCW level measuring system to solve the question such as difficult to measure and low precision in the measure of the blast furnace＇s level, and an adopted high-precision estimation algorithm is proposed. We determines a coarse fre- quency estimation range with fast Fourier transform （FFT） technique, the interested narrowband spectrum is obtained, it is between the two max spectrum lines of the amplitude; Then, modify the range of the narrowband through the ratio method; Finally, the narrowband spectrum is analyzed by the adopted improved ZOOM-FFT algorithm to estimate the beat frequency. The simulation experiment results show that, in the 0 to 50 m distance, the high precision and high stability is achieved.

关 键 词：料位测量 FMCW雷达 ZOOM—FFT 

分 类 号：TP873[自动化与计算机技术—检测技术与自动化装置] TE682[自动化与计算机技术—控制科学与工程]