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Collective Detection and Direct Positioning Using Multiple GNSS Satellites

机译:使用多个GNSS卫星的集体检测和直接定位

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摘要

This paper describes and demonstrates an assisted GPS technique, termed "Collective Detection," for combining satellite correlograms to enable rapid acquisition and direct positioning. Correctly combining correlation values from multiple satellites reduces the required C/No such that satellite signals, which cannot be acquired individually, can contribute constructively to a position solution. The acquisition search is performed in a position I clock space that directly yields the navigation solution. Results from a hardware simulator and live experiments are presented. The simulations compare combinations of 11 satellites and four satellites at C/No levels of 40 and 20 dB-Hz. The outdoor experiments show horizontal position accuracies on the order of 50 m in open sky conditions and in a narrow courtyard environment using one millisecond of data. Collective detection and positioning is shown to be a promising approach for positioning in weak signal environments.
机译:本文描述并演示了一种辅助GPS技术,称为“集体检测”,用于组合卫星相关图以实现快速采集和直接定位。正确组合来自多个卫星的相关值会降低所需的C / No,从而使无法单独获取的卫星信号可以对位置解有建设性的贡献。采集搜索在位置I时钟空间中执行,该位置直接产生导航解决方案。展示了硬件模拟器和现场实验的结果。模拟比较了C / No电平为40和20 dB-Hz的11颗卫星和4颗卫星的组合。户外实验使用一毫秒的数据显示了在开阔天空条件下以及在狭窄的庭院环境中水平位置精度约为50 m。集体检测和定位被证明是在微弱信号环境中进行定位的有前途的方法。

著录项

  • 来源
    《Navigation》 |2011年第4期|p.305-321|共17页
  • 作者单位

    University of Colorado at Boulder, Boulder CO 80309;

    University of Colorado at Boulder, Boulder CO 80309;

    Charles Stark Draper Laboratory, Cambridge, MA 02139;

    Charles Stark Draper Laboratory, Cambridge, MA 02139;

    Charles Stark Draper Laboratory, Cambridge, MA 02139;

  • 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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