Adaptive Filtering in AMTI Radar.

Abstract

Adaptive filtering is a technique for optimizing the doppler filter response in an MTI (moving target indication) radar. In airborne MTI radars, the clutter spectrum is continually changing and varies with scan angle, antenna pattern, and angular distribution of the clutter intensity. Rain backscatter, if present, has a doppler spectrum which depends on local wind velocity and wind shear. An adaptive filter senses each of these effects and adaptively controls the filter weights to maximize the signal-to-clutter ratio in the filter output. Curves are presented in this report which illustrate the performance of adaptive filters in AMTI radar. The steady-state and transient response of adaptive filters, and performance in rain, are included. Methods of simplifying adaptive filter control loops are discussed. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Sep 29, 1972
Accession Number
AD0904853

Entities

People

  • Gerald W. Lank
  • Ivan P. Bottlik
  • Lawrence E. Brennan

Organizations

  • Technology Service Corporation

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Adaptive Filters
  • Adaptive Systems
  • Base Lines
  • Control Systems
  • Coordinate Systems
  • Filters
  • Filtration
  • Frequency
  • Gaussian Processes
  • Ground Clutter
  • Moving Target Indicator Radar
  • Radar
  • Random Variables
  • Steady State
  • Stochastic Processes
  • Wind Shear
  • Wind Velocity

Fields of Study

  • Engineering

Readers

  • Adaptive Control and Estimation with Uncertainty in Dynamic Systems.
  • Radar Systems Engineering.