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Real-time software defined GPS receiver

机译：实时软件定义的GPS接收器

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摘要

Space-based global navigation systems have become a mainstay in providing navigation for aviation, ground and maritime operations. The US based Global Positioning System (GPS) has been integrated into many aspects of daily life. However, GPS receiver design is challenging depending on the operating environment of the user. Multipath propagation and considerable attenuation leading to low signal strength are examples of some of these challenges. Designing specific environmental operating modes creates application-specific hardware architectures. The goal of a Software-Defined GPS system is to create, solely through programming, a reconfigurable GPS receiver than can adapt to its environment. The first step to meeting this goal is to process the GPS signal in real time and decode the GPS navigational message.;This work describes the design and implementation of a real-time Software-Defined GPS Receiver based on the Wireless Open Access Research Platform (WARP). The output of this receiver is the bits of the navigational message. To obtain this, first the process of acquisition was performed, whereby the characteristics of a GPS satellite's signal were estimated. Second the estimated parameters from acquisition were further refined through the process of tracking, ultimately providing the navigational message. Finally, the navigational message is examined for bit errors confirming that the received bits are correct.
机译：天基全球导航系统已成为为航空，地面和海上行动提供导航的支柱。美国的全球定位系统（GPS）已集成到日常生活的许多方面。然而，取决于用户的操作环境，GPS接收器设计具有挑战性。多径传播和相当大的衰减导致较低的信号强度就是其中一些挑战的例子。设计特定的环境操作模式将创建特定于应用程序的硬件体系结构。软件定义的GPS系统的目标是仅通过编程来创建可重新配置的GPS接收器，以使其适应环境。达到此目标的第一步是实时处理GPS信号并解码GPS导航消息。该工作描述了基于无线开放访问研究平台的实时软件定义GPS接收器的设计和实现（经）。该接收器的输出是导航消息的位。为此，首先进行获取过程，从而估算GPS卫星信号的特性。其次，通过跟踪进一步完善来自采集的估计参数，最终提供导航消息。最后，检查导航消息是否有误码，以确认接收到的比特正确。

著录项

  • 作者

    Hershberger, Jeremy.;

  • 作者单位

    Purdue University.;

  • 授予单位 Purdue University.;
  • 学科 Electrical engineering.
  • 学位 M.S.E.
  • 年度 2013
  • 页码 168 p.
  • 总页数 168
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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