工程科学学报，第40卷，第8期：979-988,2018年8月 Chinese Journal of Engineering,Vol.40,No.8:979-988,August 2018 DOI:10.13374/j.issn2095-9389.2018.08.012;http://journals.ustb.edu.cn 基于高炉料线的RCS测量及SAR成像验证 王晨露12)，陈先中12)区，侯庆文12)，王正鹏) 1)北京科技大学自动化学院，北京1000832)北京科技大学工业过程知识自动化教育部重点实验室，北京100083 3)北京航空航天大学电子信息工程学院，北京100191 区通信作者，E-mail:cxz@ustb.cdu.cn 摘要围绕高炉雷达料面监测系统成像需求，针对高炉雷达测量目标的香达横截面积(radar cross section,RCS)展开应用研 究，首次实现了微波暗室中高炉料线CS的高精度自动化测量，为高炉雷达目标特性的深入研究奠定了硬件基础.基于比较 法测得10GHz处的焦炭、烧结矿颗粒的RCS典型值分布以及高炉料线散射方向性图，测量动态范围为-10~15dB.通过RCS 测量和成像诊断等方法对工业现场布焦、布矿的雷达回波信号强度差别大等问题进行了探索和分析.模拟工业现场的焦炭、 烧结矿等平台加漏斗的料线形状，对散装物料进行了等比例缩小的实际摆放，对典型料线缩比模型进行了合成孔径雷达(~ thetic aperture radar,SAR)成像验证，并深入分析了成像缺失和成像误差原因，得知漏斗部分在低频情况下成像效果不理想，需 要提高测试频段：利用标准球模拟料线分析成像误差，方位向和距离向绝对误差在1.2%和5.8%以内，暗室内方位向测量误 差不超过±0.01m. 关键词高炉：雷达；料线：RCS测量；SAR成像 分类号TN959.1 RCS measurement and SAR imaging verification based on blast furnace stock line WANG Chen-lu2),CHEN Xian-zhong,HOU Qing-wen'2),WANG Zheng-peng 1)School of Automation and Electrical Engineering,University of Science and Technology Beijing,Beijing 100083,China 2)Key Laboratory of Knowledge Automation for Industrial Processes of Ministry of Education,University of Science and Technology Beijing,Beijing 100083,China 3)School of Electronic and Information Engineering,BeiHang University,Beijing 100191,China Corresponding author,E-mail:cxz@ustb.edu.cn ABSTRACT Based on the requirements of blast furnace burden surface monitoring imaging,this study investigated the measurement of the radar cross section (RCS)of the blast furnace radar target.For the first time,a highly precise automatic measurement of the RCS of a blast furnace stock line in a microwave anechoic chamber was realized.Based on this,the characteristics of the blast furnace radar target were studied.The RCS typical distribution of coke and sinter particles and the scattering directivity pattern of the blast fur- nace stock line at 10GHz were measured based on a comparative method,and the measured dynamic range was -10-15 dB.Problems such as the intensity difference of radar echo signals between the coke and sinter distribution in the industrial field were explored and analyzed by the RCS measurement and imaging diagnosis.The stock line shape of coke and sinter on the industrial site,known as plat- form plus funnel type,was simulated,and bulk materials were placed and scaled down.Synthetic aperture radar(SAR)imaging veri- fication was performed on the shrinkage ratio model of the typical stock line,and the reasons for imaging loss and error were deeply an- alyzed.At a low frequency,the imaging of the funnel section is not satisfactory;hence the test frequency band should be improved.A blast furnace stock line made of standard balls was used to analyze the imaging errors.The absolute errors in the azimuth and range di- rections are 1.2%and 5.8%,respectively,and the azimuth measurement error in the anechoic chamber does not exceed +0.01 m. KEY WORDS blast furnace;radar;stock line;RCS measurement;SAR imaging 收稿日期：2017-08-23 基金项目：国家自然科学基金资助项目(61671054)：北京市自然科学基金资助项目(4182038)工程科学学报,第 40 卷,第 8 期:979鄄鄄988,2018 年 8 月 Chinese Journal of Engineering, Vol. 40, No. 8: 979鄄鄄988, August 2018 DOI: 10. 13374 / j. issn2095鄄鄄9389. 2018. 08. 012; http: / / journals. ustb. edu. cn 基于高炉料线的 RCS 测量及 SAR 成像验证 王晨露1,2) , 陈先中1,2) 苣 , 侯庆文1,2) , 王正鹏3) 1) 北京科技大学自动化学院, 北京 100083 2) 北京科技大学工业过程知识自动化教育部重点实验室, 北京 100083 3) 北京航空航天大学电子信息工程学院, 北京 100191 苣 通信作者, E鄄mail: cxz@ ustb. edu. cn 摘 要 围绕高炉雷达料面监测系统成像需求,针对高炉雷达测量目标的雷达横截面积(radar cross section,RCS)展开应用研 究,首次实现了微波暗室中高炉料线 RCS 的高精度自动化测量,为高炉雷达目标特性的深入研究奠定了硬件基础. 基于比较 法测得 10 GHz 处的焦炭、烧结矿颗粒的 RCS 典型值分布以及高炉料线散射方向性图,测量动态范围为 - 10 ~ 15 dB. 通过 RCS 测量和成像诊断等方法对工业现场布焦、布矿的雷达回波信号强度差别大等问题进行了探索和分析. 模拟工业现场的焦炭、 烧结矿等平台加漏斗的料线形状,对散装物料进行了等比例缩小的实际摆放,对典型料线缩比模型进行了合成孔径雷达( syn鄄 thetic aperture radar,SAR)成像验证,并深入分析了成像缺失和成像误差原因,得知漏斗部分在低频情况下成像效果不理想,需 要提高测试频段;利用标准球模拟料线分析成像误差,方位向和距离向绝对误差在 1郾 2% 和 5郾 8% 以内,暗室内方位向测量误 差不超过 依 0郾 01 m. 关键词 高炉; 雷达; 料线; RCS 测量; SAR 成像 分类号 TN959郾 1 收稿日期: 2017鄄鄄08鄄鄄23 基金项目: 国家自然科学基金资助项目(61671054);北京市自然科学基金资助项目(4182038) RCS measurement and SAR imaging verification based on blast furnace stock line WANG Chen鄄lu 1,2) , CHEN Xian鄄zhong 1,2) 苣 , HOU Qing鄄wen 1,2) , WANG Zheng鄄peng 3) 1) School of Automation and Electrical Engineering, University of Science and Technology Beijing, Beijing 100083, China 2) Key Laboratory of Knowledge Automation for Industrial Processes of Ministry of Education, University of Science and Technology Beijing, Beijing 100083, China 3) School of Electronic and Information Engineering, BeiHang University, Beijing 100191, China 苣 Corresponding author, E鄄mail: cxz@ ustb. edu. cn ABSTRACT Based on the requirements of blast furnace burden surface monitoring imaging, this study investigated the measurement of the radar cross section (RCS) of the blast furnace radar target. For the first time, a highly precise automatic measurement of the RCS of a blast furnace stock line in a microwave anechoic chamber was realized. Based on this, the characteristics of the blast furnace radar target were studied. The RCS typical distribution of coke and sinter particles and the scattering directivity pattern of the blast fur鄄 nace stock line at 10 GHz were measured based on a comparative method, and the measured dynamic range was - 10鄄鄄15 dB. Problems such as the intensity difference of radar echo signals between the coke and sinter distribution in the industrial field were explored and analyzed by the RCS measurement and imaging diagnosis. The stock line shape of coke and sinter on the industrial site, known as plat鄄 form plus funnel type, was simulated, and bulk materials were placed and scaled down. Synthetic aperture radar (SAR) imaging veri鄄 fication was performed on the shrinkage ratio model of the typical stock line, and the reasons for imaging loss and error were deeply an鄄 alyzed. At a low frequency, the imaging of the funnel section is not satisfactory; hence the test frequency band should be improved. A blast furnace stock line made of standard balls was used to analyze the imaging errors. The absolute errors in the azimuth and range di鄄 rections are 1郾 2% and 5郾 8% , respectively, and the azimuth measurement error in the anechoic chamber does not exceed 依 0郾 01 m. KEY WORDS blast furnace; radar; stock line; RCS measurement; SAR imaging