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A Fast Number-theoretic Transform Approach to a GPS Receiver

机译:GPS接收机的快速数论变换方法

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摘要

This paper describes the application of the Fast Number-theoretic Transform (FNT) to the processing of GNSS signals. This FNT is an alternative to Fast Fourier Transform (FFT) techniques and efficiently provides bit-for-bit identical results to a traditional time-domain correlator without the need for word-length growth or the quantization of irrational complex roots of unity. We document a prototype single channel GPS CIA code receiver with a continuously operating correlator that computes hundreds of lags. The design is implemented with an inexpensive Field Programmable Gate Array (FPGA) programmed to implement the FNT. As an initial application, we present a multipath investigation using this receiver in which we were able to localize and then identify the source of the multipath signal.
机译:本文介绍了快速数论变换(FNT)在GNSS信号处理中的应用。该FNT是快速傅立叶变换(FFT)技术的替代产品,可有效地提供与传统时域相关器相同的逐位结果,而无需字长增长或量化无理的复数根。我们记录了具有连续运行相关器的原型单通道GPS CIA代码接收器,该相关器可计算数百个延迟。该设计是通过廉价的现场可编程门阵列(FPGA)进行编程的,以实现FNT。作为最初的应用,我们提出了使用该接收器进行多径研究的方法,其中我们能够定位并确定多径信号的来源。

著录项

  • 来源
    《Navigation》 |2010年第4期|p.297-307|共11页
  • 作者单位

    University of Texas, Austin, TX 78758;

    University of Texas, Austin, TX 78758;

    University of Texas, Austin, TX 78758;

    Massachusetts Institute of Technology, 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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