The Radio Frequency Interference Detection Algorithms for the Jindalee Facility Alice Springs Passive Channel Evaluator

Abstract

To maximise target signal to noise ratio, the Jindalee Facility Alice Springs (JFAS) Over-the- Horizon Radar (OTHR) requires frequency channels that are free from radio frequency interference (RFI). Prior to 2000, to achieve this objective the radar operators were reliant on Clear Channel Advice (CCA) which is derived primarily from the Frequency Management System's (FMS) Spectrum Monitor (SM). Due to limitations of the SM, the operators were forced to use an HF communications receiver to check CCA, which could be a time consuming and inaccurate process. As part of a major upgrade of the FMS in 1999, a Passive Channel Evaluator (PCE) subsystem was added to remove or reduce the need to use the communications receiver. This report contains a description of the signal processing algorithms used to determine if PCE data contains RFI and the results of testing these algorithms with the JFAS radar.

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 2003
Accession Number
ADA419439

Entities

People

  • Brett J. Northey
  • Philip S. Whitham

Organizations

  • Defence Science and Technology Group

Tags

Communities of Interest

  • Advanced Electronics
  • C4I
  • Space

DTIC Thesaurus Topics

  • Ambient Noise
  • Background Noise
  • Carrier Frequencies
  • Data Sets
  • Detection
  • Frequency
  • Information Science
  • Information Systems
  • Noise
  • Radar Signals
  • Radio Frequency
  • Radio Frequency Interference
  • Reconnaissance
  • Signal Processing
  • Surveillance
  • Universities
  • User Interface

Fields of Study

  • Engineering

Readers

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