Air/Surface Channel Isolation in the AN/SPQ-9B Radar: Diplexer Test Results.

Abstract

A method for reducing cross-talk interference generated on receive between the Air and Surface Channels of the AN/SPQ-9B radar is described. The method utilizes a diplexer circuit that is placed prior to a transmitlreceive limiter cFRL) for each channel so that the Air and Surface Channel echoes, which are transmitted on different frequencies, are processed by two completely separate receiver chains. In this way, strong clutter echoes passing through front end components that are near saturation in one channel will not generate inter-modulation tones which could appear in the other channel's passband. Results of this method tested with NRiJs ANISPQ-9B advanced development model (ADM) radar show a 10 to 30 dB reduction of cross-talk generated on receive due to strong clutter echoes at close range.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Sep 30, 1997
Accession Number
ADA331131

Entities

People

  • Ben Cantrell
  • Gregory C. Tavik
  • Michael D. Livingston

Organizations

  • United States Naval Research Laboratory

Tags

DTIC Thesaurus Topics

  • Abstracts
  • Air Defense
  • Ambiguity
  • Classification
  • Diplexers
  • Information Operations
  • Military Research
  • Monitoring
  • Radar
  • Security

Readers

  • Atmospheric Science / Meteorology, specifically Wind Wave Turbulence.
  • Fire Suppression Systems Design.
  • Radio communications and signal processing.