On the Choice of Beam Spacing in Rotational Directional Transmission

Abstract

A possible method of insonifying a large sector with a Conformal/ Planar sonar is the use of rotational directional transmission. This technique consists of sequentially transmitting in contiguous beams. An alternate method of insonification consists of defocusing the beams and transmitting long coded pulses. (the use of coding is necessary to maintain the desired transmitted bandwidth.) This latter method was not judged as desirable as the first because of the possible signal processing losses due to the medium and own ship's motion, as well as possible difficulties associated with driving the elements. Furthermore, the increased system costs associated with the additional signal processing equipment decrease the attractiveness of the beam broadening approach.

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1966
Accession Number
ADA066767

Entities

People

  • Asher Novick

Organizations

  • Control Data Corporation

Tags

DTIC Thesaurus Topics

  • Depression Angles
  • Detection
  • Directional
  • Echoes
  • Electronics Laboratories
  • False Alarms
  • Fused Deposition Modeling
  • Intensity
  • New York
  • Processing Equipment
  • Reverberation
  • Signal Processing
  • Steering
  • Target Echoes
  • Transmitting
  • Travel Time

Fields of Study

  • Engineering

Readers

  • Acoustical Oceanography.
  • Life Cycle Cost Analysis
  • Phased Array Antenna Design.

Technology Areas

  • Space