提出一种中心频率为3 GHz单天线近距宽带调频连续波雷达的实现方法，设计了射频单元和中频信号处理电路.采用槽形结构的微带天线并利用微带威尔金森功分器取代传统的环行器双工结构，实现了雷达的宽带应用；通过Blackman加窗的方法对差拍信号进行FFT处理，抑制了天线端口的反射以及发射泄露信号的影响.实验结果表明，提出的新型近距调频连续波雷达方案是可行的.
Abstract
This paper presented an implementation method of single antenna short range wideband FMCW radar with microstrip structure, and the radar worked at 3 GHz. Microstrip Wilkinson power dividers were adopted to replace the traditional circulator duplex structure, and a wideband microstrip slot antenna was designed. Blackman window was applied into the frequency beat signal so as to decrease the effect of direct reflection, crosstalk. Experimental results show that the proposed method is feasible.
关键词
调频连续波(FMCW)雷达 /
Blackman加窗 /
宽带天线 /
微带功分器
Key words
frequency modulation continuous wave (FMCW) radar /
Blackman window /
wideband antenna /
microstrip power divider
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参考文献
[1]谭朔，郭伟.调频连续波近程测距系统研究［J］.舰船电子工程.2007，27（4）：95-99.
TAN Shuo, GUO Wei. Study of short-range FMCW system［J］. Ship Electronic Engineering, 2007, 27（4）：95-99. (in Chinese)
［2］MUNOZ-FERRERAS J M. Helicopter classification with a high resolution LFMCW radar［J］.IEEE Transactions on Aerospace and Electronic Systems,2009, 45(4 ):1373-1384.
［3］ 王保华.近程LFMCW雷达测距系统的设计与实现［D］. 重庆:重庆大学,2012.
WANG Bao-hua. Research and realization of short-range LFMCW radar ranging system［D］. Chongqing: Chongqing University, 2012. (in Chinese)[ZK）]
［4］ SKOLNIK M I. 雷达手册［M］.北京：电子工业出版社, 2010.
［5］ 丁鹭飞，耿富录.雷达原理［M］.西安：西安电子科技大学出版社, 2002.
［6］ KOMAROV L V, SMOLSKIY S M. Fundamentals of short-range FM radar［M］. USA: Artech House, 2003.
［7］ 王野，邵秘华，谭靖，等. 海冰厚度测量方法及仪器的应用研究［J］.大连海事大学学报，2006，32(4):113-115.
WANG Ye, SHAO Mi-Hua, TAN Jing, et al. Study of measuring methods and instruments for the thickness of sea ice［J］. Journal of Dalian Maritime University, 2006, 32(4): 113-115. (in Chinese)
［8］ 毛剑波，黄正峰，杨明武，等.微带不连续性辐射研究［J］.电子测量与仪器学报，2012,26(5):392-397.
MAO Jian-bo, HUANG Zheng-feng, YANG Ming-wu, et al. Study on microstrip discontinuity radiation［J］.Journal of Electronic Measurement and Instrument, 2012, 26(5):392-397. (in Chinese)
［9］ 邓世雄，陈星，李德治.扇形短截线结构的椭圆微带低通滤波器设计［J］.电子测量技术，2012,35(8):35-37.
DENG Shi-xiong, CHEN Xing, LI De-zhi. Design of elliptic microstrip lowpass filter using radial line stub［J］. Electronic Measurement Technology, 2012, 35(8):35-37. (in Chinese)
［10］ YIN Xiao-xing, SU Zi-guo, HONG Wei, et al. An Ultra wideband tapered slot antenna［C］// Antennas and Propagation Society International Symposium. Nanjing, China: IEEE Press,2005, 2A: 516-519.
［11］ 王虹，李兴国.FMCW雷达差频信号的非线性分析［J］.电光与控制，2010,17(10):34-36.
WANG Hong, LI Xingguo. Analysis to nonlinearity of difference-frequency signal for FMCW radar［J］. Electronics Optics & Control, 2010, 17(10):34-36. (in Chinese)
［12］ 肖玮，涂亚庆，李先利. VCO扫频非线性校正技术综述［J］.电测与仪表，2009,46(12):33-38.
XIAO Wei, TU Ya-qing, LI Xian-li. Review of sweeping nonlinearity correction technology for VCO［J］. Electrical Measurement & Instrumentation, 2009, 46(12):33-38. (in Chinese)
基金
2013年国家级大学生创新训练项目（2013GCXXL029）
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