A Numerically Efficient Digital Matched Filter for Periodic and Windowed Periodic Radar Waveforms

Abstract

An algorithm is presented for implementing a digital matched filter for periodic and windowed periodic radar waveforms. The algorithm is based on circular convolutional techniques. For moderate to high duty cycles d (radar on time to pulse repetition interval (PRI) ratio), the circular convolutional algorithm uses 50% fewer complex multiply operations (CMOPs) than does a fast convolution implementation. In fact, if BPRI is the radar waveform bandwidth-PRI product, then the circular convolutional technique is numerically more efficient if d > 1/sq. rt(8(BPRI)). Furthermore, the circular convolution technique is numerically more efficient when the pulse compression ratio p > sq. rt. (BPRI/8) . Keywords: Radar; Matched filter; Waveforms.

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Document Details

Document Type
Technical Report
Publication Date
Feb 26, 1988
Accession Number
ADA193132

Entities

People

  • Karl R. Gerlach

Organizations

  • United States Naval Research Laboratory

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Algorithms
  • Bandwidth
  • Classification
  • Compression
  • Compression Ratio
  • Convolution
  • Digital Signal Processing
  • Filters
  • Intervals
  • Matched Filters
  • Military Research
  • Pulse Compression
  • Radar
  • Radar Receivers
  • Security
  • Signal Processing
  • Waveforms

Fields of Study

  • Engineering

Readers

  • Approximation Theory.
  • Radar Systems Engineering.