A Need to Calibrate Indicator for High Frequency Direction Finding Systems

Abstract

This thesis proposes and investigates a new approach in attacking the need to calibrate problem of the shipboard HFDF systems. It is based on measuring the system response to multiple onboard near-field sources. The test is performed along with the standard calibration, and the antenna responses to the near-field sources are stored in a reference database. Whenever a modification is made to the topside, the near-field test is repeated and the new results are compared to the near-field reference database. A significant difference may indicate a need to perform a full system calibration. The calibration procedure was simulated using the numerical electromagnetics code PATCH. Calculations show that the antenna responses are comparable when topside changes were introduced. Calibration, HFDF, Classic outboard, Combat DF.

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1994
Accession Number
ADA286128

Entities

People

  • Ioannis Partsalidis

Organizations

  • Naval Postgraduate School

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies
  • Ground and Sea Platforms
  • Weapons Technologies

DTIC Thesaurus Topics

  • Accuracy
  • Angle Of Arrival
  • Antennas
  • Computations
  • Databases
  • Direction Finding
  • Electromagnetic Radiation
  • Electronic Warfare
  • Ferrites
  • Field Tests
  • Geometry
  • Measurement
  • Plane Waves
  • Scattering
  • Simulations
  • Test Methods
  • Transmitters

Readers

  • Computational Modeling and Simulation
  • Electromagnetic Wave Scattering and Antenna Radiation Engineering
  • Naval Mine Countermeasure Systems Development.