Volume 31 Issue 2
Mar.  2022
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TAO Lin, SUN Junren, LI Guangchen, ZHU Bocheng. An Improved Navigation Pseudolite Signal Structure Based on the Kasami Sequences and the Pulsing Scheme[J]. Chinese Journal of Electronics, 2022, 31(2): 220-226. doi: 10.1049/cje.2020.00.403
Citation: TAO Lin, SUN Junren, LI Guangchen, ZHU Bocheng. An Improved Navigation Pseudolite Signal Structure Based on the Kasami Sequences and the Pulsing Scheme[J]. Chinese Journal of Electronics, 2022, 31(2): 220-226. doi: 10.1049/cje.2020.00.403

An Improved Navigation Pseudolite Signal Structure Based on the Kasami Sequences and the Pulsing Scheme

doi: 10.1049/cje.2020.00.403
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  • Author Bio:

    received the B.S. from Xidian University, Xi’an, China, in 2014. He is currently pursuing the Ph.D. degree with the Department of Electronics, Peking University, Beijing, China. His current research interests include signal processing and positioning technology of ground-based augmentation system. (Email: taolin_yiran@pku.edu.cn)

    received the Ph.D. degree from the Peking University, Beijing, China, in 2015. He is currently a postdoctor in the Department of Electronics, Peking University, Beijing, China. His current research interests include integrated navigation and multisensors data fusion. (Email: sunjunren@pku.edu.cn)

    received the B.S. degree from the University of Electronic Science and Technology of China, Chengdu, China, in 2019. He is currently pursuing the Ph.D. degree with the Department of Electronics, Peking University, Beijing, China. His current research interests include signal processing and positioning algorithms of GNSS. (Email: liguangchen@pku.edu.cn)

    (corresponding author) received the Ph.D. degree in electromagnetic field and microwave technology from the Beijing Institute of Technology, Beijing, China, in 1996. He is currently a Professor at the School of Electronics Engineering and Computer Science, Peking University, Beijing. Prof. Zhu is a Senior Member in the Chinese Institute of Electronics. His research interests include wireless communication, satellite navigation, and microwave technology. (Email: zhubc@pku.edu.cn)

  • Received Date: 2020-12-08
  • Accepted Date: 2020-12-31
  • Available Online: 2021-08-18
  • Publish Date: 2022-03-05
  • Pseudolites (PLs) are ground-based satellites, providing users with navigation solutions. However, implementation of the PL system leads to the near-far problem. In this paper, we proposed an improved navigation PL signal structure of combing Kasami sequences and the pulsing scheme to mitigate the near-far effect. The pulse modulation method is adopted to ensure that the PLs transmit signals at different timeslots and reduce the PL signals’ mutual interference. Additionally, we employ the small set of Kasami sequences with good cross-correlation properties to improve the anti-interference ability. A simulation test based on software is carried out to evaluate the performance of the proposed signal. The simulation proves that the improved PL signal has an impulsive power spectral density, makes it a feasible solution to mitigate the near-far effect, and performs better in the capture.
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