120GHz超宽带毫米级高精度雷达液位算法  

120 GHz Ultra-wideband Millimeter-level High-precision Radar Liquid Level Algorithm

作　　者：李国栋 王雪楠 仝盼盼 毕欣 LI Guo-dong;WANG Xue-nan;TONG Pan-pan;BI Xin(Dalian Branch, China Kunlun Engineering Co.,Ltd.;School of Health and Medical Technology, Dalian Neusoft Institute of Information Technology;School of Automobile, Tongji University)

机构地区：[1]中国昆仑工程有限公司大连分公司 [2]大连东软信息学院健康医疗科技学院 [3]同济大学汽车学院

出　　处：《化工自动化及仪表》2022年第5期585-589,共5页Control and Instruments in Chemical Industry

基　　金：成都市重大科技创新项目(2021-YF08-00138-GX)。

摘　　要：总结近年来石油化工行业应用自动化测量液位计的现状和问题以及雷达液位计的优势。分析雷达液位算法中传统FFT变换算法的栅栏效应和泄漏效应对雷达液位计测量精度的影响,并提出面向120 GHz超宽带毫米波液位雷达的高精度Chirp-Z变换算法。经实验验证,笔者所提算法的液位测距精度可以达到0.5 mm以内。The current situation and existing problems of automatic liquid level instrument in petrochemical tank farm in recent years were summarized,including the advantages of radar level meters;meanwhile,the influence of picket fence effect and leakage effect of traditional FFT transform on the measurement accuracy of the radar level meter was analyzed and a high-precision Chirp-Z transform algorithm for 120 GHz ultrawideband millimeter wave level radar was proposed.The experimental verification shows that,the accuracy of the liquid level ranging of the algorithm proposed can stay within 0.5 mm.

关 键 词：雷达液位计 CZT算法 CHIRP-Z变换 120 GHz 超宽带 高精度 

分 类 号：TP274[自动化与计算机技术—检测技术与自动化装置]