Comparing Traditional FFT Based Frequency Domain Excision with Poly-Phase Transform Excision

Abstract

This work is part of an ONR program to imbed DSP in next generation GPS receivers to mitigate GPS vulnerabilities. We address and compare a number of frequency domain methods for suppressing stationary and slowly sweeping narrow-band interferes. Frequency-domain interference excision techniques use the FFT to identify and excise undesired spectral components. The technique is known as hole-punching, a spectral gating operation that sets to zero those spectral components exceeding specified threshold levels.

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Document Details

Document Type
Technical Report
Publication Date
Jun 06, 1999
Accession Number
ADA381695

Entities

People

  • Fred Harris
  • Hana Abusalem

Organizations

  • Naval Information Warfare Systems Command

Tags

Communities of Interest

  • Materials and Manufacturing Processes
  • Space

DTIC Thesaurus Topics

  • Boundaries
  • Communication Systems
  • Data Processing
  • Data Sets
  • Digital Signal Processing
  • Excision
  • Frequency
  • Frequency Domain
  • Matched Filters
  • Orthogonal Frequency Division Multiplexing
  • Signal Processing
  • Standards
  • Time Domain
  • Time Intervals
  • Time Signals
  • Weighting Functions
  • Workload

Fields of Study

  • Engineering

Readers

  • Image Processing and Computer Vision.
  • Molecular Genetics
  • Thermal Physics or Thermal Science.

Technology Areas

  • Space