Improved MTI Radar Signal Processor

Abstract

A new type of radar digital signal processor for use with ASR radars is described. It features spectral processing accomplished by combining a 3- pulse canceller with an 8-point, weighted, discrete Fourier transform and adaptive thresholds. This combination of circuits provides a 20-dB increase in MTI improvement factor over present ASR's and is within 2 dB of optimum processing results. An auxiliary channel is provided to allow detection of any target traveling tangentially if its return exceeds the level of ground clutter return in the occupied range/azimuth cell. The spectral processing technique provides discrimination against weather clutter if the returns from weather and from the target fall into different Doppler frequency regions. The output from this equipment is digital hit reports for transmittal to the ARTS-III IOP computer.

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Document Details

Document Type
Technical Report
Publication Date
Apr 03, 1975
Accession Number
ADA010478

Entities

People

  • W. H. Drury

Organizations

  • Massachusetts Institute of Technology

Tags

Communities of Interest

  • Energy and Power Technologies
  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Access Time
  • Circuits
  • Clocks
  • Computers
  • Delay Lines
  • Detection
  • Detectors
  • Diagrams
  • Discrete Fourier Transforms
  • Floating Point Operations
  • Frequency
  • Generators
  • Ground Clutter
  • Radar
  • Recursive Filters
  • Shift Registers
  • Time Intervals

Fields of Study

  • Engineering

Readers

  • Radar Systems Engineering.