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A Composite Model for Indoor GNSS Signals: Characterization, Experimental Validation and Simulation

机译：室内GNSS信号的复合模型：表征，实验验证和仿真

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摘要

In this paper, the problem of characterizing and simulating indoor Global Navigation Satellite Systems (GNSS) signals is addressed. A detailed methodology for characterizing the temporal I spatial behavior of indoor GNSS signalamplitude is first presented. The proposed methodology is then used to extract the signal amplitude and its empirical Probability Density Function is compared against several standard distributions. From the analysis, it emerges that the slow and fast fading components affecting received GNSS signals need to be modeled separately. In this respect, a composite Rice Ilog-Normal model able to effectively capture the behavior of the indoor signalamplitudeis considered. Several experiments have been conducted and the validity of the composite model has been validated against measurements.lt is shown that the spectra of the slow and fast fading components can be effectively modeled using a fourth order low-pass Butterworth filter. A simulation scheme is finally suggested for the generation of indoor GNSS signals.
机译：在本文中，解决了表征和模拟室内全球导航卫星系统（GNSS）信号的问题。首先介绍了表征室内GNSS信号幅度的时间I空间行为的详细方法。然后，将所提出的方法用于提取信号幅度，并将其经验概率密度函数与几种标准分布进行比较。从分析中可以看出，影响接收到的GNSS信号的慢衰落和快速衰落分量需要分别建模。在这方面，考虑了能够有效捕获室内信号幅度行为的复合Rice Ilog-Normal模型。已经进行了几次实验，并针对测量结果验证了组合模型的有效性。结果表明，可以使用四阶低通巴特沃斯滤波器有效地对慢衰落分量和快速衰落分量的光谱进行建模。最后提出了一种用于生成室内GNSS信号的仿真方案。

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  • 来源
    《Navigation》 |2012年第2期|p.77-92|共16页
  • 作者

    SHASHANK SATYANARAYANA; DANIELE BORIO; GERARD LACHAPELLE;

  • 作者单位

    University of Calgary, Calgary, Alberta T2N 1N4 Canada;

    University of Calgary, Calgary, Alberta T2N 1N4 Canada;

    University of Calgary, Calgary, Alberta T2N 1N4 Canada;

  • 收录信息 美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
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