Adaptive Cancellation Techniques.

Abstract

An adaptive signal canceller has been evaluated for the enhancement of pulse signal reception during the transmission of a high power ECM jamming signal. The canceller design is based on the use of DRFM(Digital RF Memory) technology as part of an adaptive multiple tapped delay line. The study includes analysis of relationship of tap spacing and waveform bandwidth, survey of related documents in areas of sidelobe cancellers, transversal equalizers, and adaptive filters, and derivation of control equations and corresponding control processes. The simulaiton of overall processes included geometric analysis of the multibeam transmitting antenna, multiple reflection sources and the receiving antenna; waveforms, tap spacings and bandwidths; and alternate control algorithms. Conclusions are provided regarding practical system control algorithms, design characteristics and limitations. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Nov 21, 1983
Accession Number
ADA136946

Entities

Organizations

  • RTX

Tags

Communities of Interest

  • Energy and Power Technologies
  • Ground and Sea Platforms
  • Space

DTIC Thesaurus Topics

  • Adaptive Filters
  • Carrier Frequencies
  • Complex Variables
  • Computational Science
  • Computer Programming
  • Computer Programs
  • Computers
  • Control Systems
  • Delay Lines
  • Filters
  • Frequency
  • Frequency Domain
  • Measurement
  • Metal Matrix Composites
  • Plastic Explosives
  • Simultaneous Equations
  • Transmitters

Fields of Study

  • Engineering

Readers

  • Phased Array Antenna Design.

Technology Areas

  • Space
  • Space - Spacecraft Maneuvers