PHASE AND ENVELOPE OF LINEAR FM PULSE-COMPRESSION SIGNALS FROM HIGH-VELOCITY TARGETS

Abstract

Equations for the phase and envelope of the output signal from a linear filter, matched to the transmitted signal, were derived. The transmitted signal is assumed to have a flat band-limited amplitude spectrum and a linear group delay. The input to the 'matched filter' is the radar echo returned from a moving target whose velocity is essentially constant during the illumination time. It was shown that the returned signal is related to the transmitted signal by a time dilation. The resulting expressions for the phase and envelope are functions which involve Fresnel integrals. Approximations for these expressions were worked out. They were shown to be similar in form to those which are obtained when the returned signal is assumed to be related to the transmitted signal by a Doppler shift.

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Document Details

Document Type
Technical Report
Publication Date
Nov 01, 1964
Accession Number
AD0608056

Entities

People

  • M. H. Ueberschaer

Organizations

  • MITRE Corporation

Tags

Communities of Interest

  • C4I
  • Materials and Manufacturing Processes
  • Space

DTIC Thesaurus Topics

  • Abstracts
  • Air Force
  • Artificial Satellites
  • Asymptotic Series
  • Classification
  • Contracts
  • Corporations
  • Doppler Effect
  • Frequency
  • Fresnel Integrals
  • Governments
  • Matched Filters
  • Optics
  • Pulse Compression
  • Radar
  • Radial Velocity
  • Security

Fields of Study

  • Engineering

Readers

  • Calculus or Mathematical Analysis
  • Radar Systems Engineering.