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Volume 46 Issue 8
Aug.  2024
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JIA Qiongqiong, ZHOU Yueying. Robust Global Satellite Navigation System Positioning for Kernel Density Estimation in Non-Line-Of-Sight Environment[J]. Journal of Electronics & Information Technology, 2024, 46(8): 3246-3255. doi: 10.11999/JEIT231421
Citation: JIA Qiongqiong, ZHOU Yueying. Robust Global Satellite Navigation System Positioning for Kernel Density Estimation in Non-Line-Of-Sight Environment[J]. Journal of Electronics & Information Technology, 2024, 46(8): 3246-3255. doi: 10.11999/JEIT231421

Robust Global Satellite Navigation System Positioning for Kernel Density Estimation in Non-Line-Of-Sight Environment

doi: 10.11999/JEIT231421 cstr: 32379.14.JEIT231421
Funds:  The National Natural Science Foundation of China (U2133204), The Key Laboratory of Wide-Area Monitoring and Security Control Technology of Civil Aviation University of China Opened Foundation (202202)
  • Received Date: 2023-12-25
  • Rev Recd Date: 2024-05-19
  • Available Online: 2024-05-28
  • Publish Date: 2024-08-30
  • Non-Line-Of-Sight (NLOS) propagation will cause the pseudo-range measurement error of the Global Navigation Satellite System (GNSS) receivers, and eventually lead to a large positioning error, which is especially prominent in complex environments such as urban canyons. To solve this problem, a robust positioning method for Kernel Density Estimation (KDE) is proposed. The core idea is to introduce robust estimation theory into localization solution to alleviate the influence of NLOS. Considering that the pseudo-range observation error caused by NLOS deviates from the Gaussian distribution, the proposed method firstly uses the method based on KDE to estimate the probability density function of the observation error, and then uses the probability density function to construct a robust cost function for positioning solution, so as to alleviate the positioning error caused by NLOS. The experimental results show that the proposed method can effectively reduce GNSS positioning error in NLOS propagation environment.
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