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Joint Determination of Precorrelation Bandwidth, Sampling Frequency and Quantization in Wideband Compass Receivers

机译:宽带罗盘接收机中预相关带宽,采样频率和量化的联合确定

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摘要

Precorrelation filtering, sampling, and quantization are three fundamental functions for GNSS receivers. Analytical model and numerical simulation methods have been developed to evaluate the implementation losses due to different combinations of these parameters, first in the context of white noise and later non-white interference. However, the performance metric was loss of effective carrier-to-noise density ratio (C/N_0). This is indirect in predicting the performance degradation of a delay-lock loop (DLL). This paper proposes an analytical model to predict the DLL performance with loss of root-mean-squared (RMS) tracking accuracy in meters. In the current project, a wideband Compass receiver capable of processing modern GNSS signals is required to form the core of the GNSS Vulnerabilities Assessment and Validation Platform (VAVE). The method proposed was used to determine the optimal combination of precorrelation bandwidth, sampling frequency, and quantization to guide the design of VAVE receiver hardware. Here optimality means highest possible performance with minimized implementation cost.
机译:预相关滤波,采样和量化是GNSS接收机的三个基本功能。已经开发了分析模型和数值模拟方法来评估由于这些参数的不同组合而导致的实施损失,首先是在白噪声和随后的非白干扰的情况下。但是,性能指标是有效载噪比(C / N_0)的损失。这间接地预测了延迟锁定环(DLL)的性能下降。本文提出了一种分析模型,该模型可以预测DLL性能,并且会丢失以米为单位的均方根(RMS)跟踪精度。在当前项目中,需要能够处理现代GNSS信号的宽带罗盘接收机,以构成GNSS漏洞评估和验证平台(VAVE)的核心。所提出的方法用于确定预相关带宽,采样频率和量化的最佳组合,以指导VAVE接收机硬件的设计。在此,最佳性意味着以最低的实现成本实现最高的性能。

著录项

  • 来源
    《Navigation》 |2012年第3期|p.195-208|共14页
  • 作者

    XIN ZHANG; XINGQUN ZHAN;

  • 作者单位

    Shanghai Jiao Tong University, Shanghai China;

    Shanghai Jiao Tong University, Shanghai China;

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

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