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.

  • Corporate Authors:

    Lincoln Laboratory

    Massachusetts Institute of Technology
    Lexington, MA  United States  02173

    Federal Aviation Administration

    Systems R&D Service, 800 Independence Avenue, SW
    Washington, DC  United States 
  • Authors:
    • Drury, W H
  • Publication Date: 1975-4-3

Media Info

  • Pagination: 90 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00091341
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: ATC-39
  • Contract Numbers: DOT-FA72WAI-242
  • Files: NTIS, USDOT
  • Created Date: Jul 15 1975 12:00AM