The Effect of a Pulsed Interference Signal on an Adaptive Array.

Abstract

This report examines the performance of an LMS adaptive array in the presence of a pulsed interference signal. It is shown that a pulsed interference signal has two effects. First, it causes the array to modulate the desired signal envelope (but not its phase). Second, it causes the array output signal-to-interference-plus-noise ratio (SINR) to vary with time. The desired signal modulation is evaluated as a function of signal arrival angles, powers and interference PRF and pulse width. It is shown that the signal modulation is small except when the interference arrives close to the desired signal. To evaluate the effect of the time-varying SINR, it is assumed that the array is used in a DPSK communication system. It is shown that the SINR variation causes a noticeable but not disastrous increase in the bit error probability. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1981
Accession Number
ADA102258

Entities

People

  • R. T. Compton Jr.

Organizations

  • Ohio State University

Tags

DTIC Thesaurus Topics

  • Carrier Frequencies
  • Classification
  • Communication Systems
  • Computer Programs
  • Digital Communications
  • Eigenvalues
  • Frequency
  • Government Procurement
  • Governments
  • Modulation
  • Phase Modulation
  • Power Spectra
  • Probability
  • Pulse Modulation
  • Security
  • Spectra
  • Steady State

Fields of Study

  • Engineering

Readers

  • Radar Systems Engineering.
  • Radio communications and signal processing.