Volume 7 Issue 3
Jul.  2018
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Xu Zhihuo, Shi Quan, Sun Ling. Novel Orthogonal Random Phase-Coded Pulsed Radar for Automotive Application[J]. Journal of Radars, 2018, 7(3): 364-375. doi: 10.12000/JR17083
Citation: Xu Zhihuo, Shi Quan, Sun Ling. Novel Orthogonal Random Phase-Coded Pulsed Radar for Automotive Application[J]. Journal of Radars, 2018, 7(3): 364-375. doi: 10.12000/JR17083

Novel Orthogonal Random Phase-Coded Pulsed Radar for Automotive Application

DOI: 10.12000/JR17083
Funds:  The National Natural Science Foundation of China (61771265), The Open Fund of the Nantong University-Nantong Joint Research Center for Intelligent Information Technology (KFKT2016A11), The Nantong Natural Science and Technology Project (GY12016017), The Natural Science Fund for Colleges and Universities in Jiangsu Province (17KJB510047), The Scientific Research Start-up Foundation for Talent Introduction of Nantong University (17R30).
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  • Author Bio:

    Xu Zhihuo received the Ph.D. degree in communication and information system in 2016, from the University of Chinese Academy of Sciences (UCAS) and the Institute of Electronics of the Chinese Academy of Sciences (IECAS), Beijing, China. He joined Radar and Image Research Group, School of transportation in Nantong University, China, in 2016, where he is currently a lecturer. His current research interests include advanced radar signal and image processing methodologies. E-mail: xuzhihuo@gmail.com

    Shi Quan was born in Haimen, China, in 1973. He is currently a professor in the School of Transpiration, Nantong University, China. He has authored more than 60 papers since 2007, of which more than 40 are peer-reviewed and well-known journal papers. His research is focused on the development of signal and image processing and big data techniques. E-mail: sq@ntu.edu.cn

    Sun Ling received the Ph.D. degree in circuit and system in 2008, from the Southeast University. She is currently a professor in the Jiangsu Key Laboratory of ASCI Design, Nantong University, China. Her research is focused on radio frequency circuit design and signal processing. E-mail: sunl@ntu.edu.cn

  • Corresponding author: Xu Zhihuo. E-mail: xuzhihuo@gmail.com
  • Received Date: 2017-09-12
  • Rev Recd Date: 2018-04-03
  • Publish Date: 2018-06-28
  • In contrast to remote sensing radar, automotive radar focuses on the detection of short-range targets in the 0–1000 m range. Conventional automotive pulsed radar usually uses a monostatic antenna and it requires high peak power for the transmission of the short duration pulses to reliably detect targets at close range with a high resolution. Unfortunately, it is difficult and expensive to generate high-powered pulses on the nanosecond scale. Meanwhile, the existing automotive radars suffer from bottlenecks, i.e., spatial resolution, sidelobe levels, and Inter-Sensor Interference (ISI). To overcome the above challenges, a bistatic antenna to transmit and receive large time-bandwidth product waveforms is firstly proposed in this paper. Secondly, high spatial resolution is implemented using a Digital Beam Forming (DBF) transmitter and the high range resolution is achieved by using the pulse compression technique. Additionally, the radial velocity of the target is calculated by applying pulse Doppler processing. Finally, to deal with the sidelobe effect of impulse response function of point target and the interference arising from neighboring radars, novel Orthogonal Random Phase-Coded (ORPC) radar signals are presented. Using these ORPC signals, the impulse response function of the radar can achieve a peak sidelobe ratio of –45 dB without any loss in the signal-to-noise ratio. Most importantly, interference can be significantly reduced by using the proposed signals. Extensive simulations demonstrate the effectiveness and advantages of the proposed radar.

     

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