77 GHz调频连续波雷达快速中频匹配算法
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摘要
针对传统77GHz调频连续波雷达在多目标检测中存在算法复杂度高的问题,提出了一种低复杂度的2步中频匹配算法。该算法首先根据由雷达系统参数造成的三角波中频频率与目标距离的强相关性,单个三角波中频频率依据排序顺序进行频率初步快速匹配,接着对初匹配结果进行验证。然后,针对初步匹配错误的频率利用两周期中频频率间的数学关联进行频率重匹配,重匹配算法能消除虚假目标影响,并对中频频率正确匹配。理论分析与仿真结果表明,与传统算法相比,该算法在保证正确性的同时降低了算法复杂度。
To solve the high complexity of 77 GHz frequency modulation continuous wave(FMCW)radar in multitarget environment.A two-step beat frequency matching method for FMCW radar with low complexity is proposed.In the first step,according to the strong correlation between the beat frequency of the up-down chirp waveform and the distance of the target caused by the radar system parameters,beat frequencies of one periodic up-down chirp waveform are matched by the sorting order.Then verify the matching results.In the second step,mismatched beat frequencies are re-matched by re-matching algorithm using the mathematical correlation between beat frequencies of two periodic up-down chirps waveform.Re-matching algorithm can eliminate the ghost targets and get correct matching.Theoretical analysis and simulation results show that the new algorithm reduces the complexity of the algorithm while ensuring the correctness compared with the traditional algorithm.
To solve the high complexity of 77 GHz frequency modulation continuous wave(FMCW)radar in multitarget environment.A two-step beat frequency matching method for FMCW radar with low complexity is proposed.In the first step,according to the strong correlation between the beat frequency of the up-down chirp waveform and the distance of the target caused by the radar system parameters,beat frequencies of one periodic up-down chirp waveform are matched by the sorting order.Then verify the matching results.In the second step,mismatched beat frequencies are re-matched by re-matching algorithm using the mathematical correlation between beat frequencies of two periodic up-down chirps waveform.Re-matching algorithm can eliminate the ghost targets and get correct matching.Theoretical analysis and simulation results show that the new algorithm reduces the complexity of the algorithm while ensuring the correctness compared with the traditional algorithm.
引文
[1]冯力方.汽车防撞雷达信号处理研究及系统设计[D].成都:电子科技大学,2016.
[2]韩峻峰,张惠敏,潘盛辉,等.汽车防撞雷达概述[J].广西工学院学报,2011,22(4):54-58.
[3]陆兴华.基于回波探测的汽车防撞系统智能测距方法[J].电子测量技术,2016,39(6):126-129.
[4]HEUEL S,ROHLING H.Pedestrian recognition in automotive radar sensors[C].Radar Symposium,IEEE,2013:732-739.
[5]MATSUNAMI I,RYOHEI N,KAJIWARA A.Target state estimation using RCS characteristics for26GHz short-range vehicular radar[C].International Conference on Radar,IEEE,2013:304-308.
[6]XIANGKUN Z,JIAWEI R,ZELONG S,et al.Vehicles detection experiments with KA-band FMCW ISAR[C].Progress in Electromagnetics Research Symposium-Fall,IEEE,2017.291-294.
[7]FRANCESCO B,ANTONINO C,GIAMPIERO B,et al.A 76to 81GHz packaged transceiver for automotive radar with FMCW modulator and ADC[C].Radar Conference(EURAD),IEEE,2017.143-146.
[8]戚昊琛,胡智文,张鉴.FMCW雷达系统的双模方向判断模块研究[J].电子测量与仪器学报,2014,28(5):486-492.
[9]王俊喜.毫米波汽车防撞雷达多目标信号检测算法研究[D].哈尔滨:哈尔滨工程大学,2016.
[10]SONG M,LIM J,SHIN D J.The velocity and range detection using the 2D-FFT scheme for automotive radars[C].IEEE International Conference on Network Infrastructure and Digital Content,2015:507-510.
[11]ROHLING H,KRONAUGE M.New radar waveform based on a chirp sequence[C].Radar Conference,IEEE,2015:1-4.
[12]屈飞园,曹宁.车载FMCW雷达准确检测多目标的一种有效方法[J].科学技术与工程,2012,12(6):1263-1267.
[13]HYUN E,LEE J H.A method for multi-target range and velocity detection in automotive FMCW radar[C].International IEEE Conference on Intelligent Transportation Systems,2009:1-5.
[14]DUAN Z Y,WU Y L,LI M X,et al.A novel FMCW waveform for multi-target detection and the corresponding algorithm[C].International Symposium on Electromagnetic Compatibility(EMC-Beijing),IEEE,2017:1-4.
[15]邢自然,朱冬晨,金星.一种多目标FMCW雷达的高效距离速度测量方法[J].电子学报,2016,44(9):2148-2157.
[2]韩峻峰,张惠敏,潘盛辉,等.汽车防撞雷达概述[J].广西工学院学报,2011,22(4):54-58.
[3]陆兴华.基于回波探测的汽车防撞系统智能测距方法[J].电子测量技术,2016,39(6):126-129.
[4]HEUEL S,ROHLING H.Pedestrian recognition in automotive radar sensors[C].Radar Symposium,IEEE,2013:732-739.
[5]MATSUNAMI I,RYOHEI N,KAJIWARA A.Target state estimation using RCS characteristics for26GHz short-range vehicular radar[C].International Conference on Radar,IEEE,2013:304-308.
[6]XIANGKUN Z,JIAWEI R,ZELONG S,et al.Vehicles detection experiments with KA-band FMCW ISAR[C].Progress in Electromagnetics Research Symposium-Fall,IEEE,2017.291-294.
[7]FRANCESCO B,ANTONINO C,GIAMPIERO B,et al.A 76to 81GHz packaged transceiver for automotive radar with FMCW modulator and ADC[C].Radar Conference(EURAD),IEEE,2017.143-146.
[8]戚昊琛,胡智文,张鉴.FMCW雷达系统的双模方向判断模块研究[J].电子测量与仪器学报,2014,28(5):486-492.
[9]王俊喜.毫米波汽车防撞雷达多目标信号检测算法研究[D].哈尔滨:哈尔滨工程大学,2016.
[10]SONG M,LIM J,SHIN D J.The velocity and range detection using the 2D-FFT scheme for automotive radars[C].IEEE International Conference on Network Infrastructure and Digital Content,2015:507-510.
[11]ROHLING H,KRONAUGE M.New radar waveform based on a chirp sequence[C].Radar Conference,IEEE,2015:1-4.
[12]屈飞园,曹宁.车载FMCW雷达准确检测多目标的一种有效方法[J].科学技术与工程,2012,12(6):1263-1267.
[13]HYUN E,LEE J H.A method for multi-target range and velocity detection in automotive FMCW radar[C].International IEEE Conference on Intelligent Transportation Systems,2009:1-5.
[14]DUAN Z Y,WU Y L,LI M X,et al.A novel FMCW waveform for multi-target detection and the corresponding algorithm[C].International Symposium on Electromagnetic Compatibility(EMC-Beijing),IEEE,2017:1-4.
[15]邢自然,朱冬晨,金星.一种多目标FMCW雷达的高效距离速度测量方法[J].电子学报,2016,44(9):2148-2157.