SAL Storage for the AN/UPA-59/60 IFF (Identification Friend or Foe) Decoders

Abstract

The AN/UPA-59/60 IFF decoders can provide display of aircraft targets within an altitude layer selected by front panel switches. This operation is called Selected Altitude Layers (SAL) and can be of two different types. One type is called SAL parity, and is supposed to correlate a target's response to a Mode C interrogation against its response to another Mode of interrogation. For a variety of reasons, the SAL parity feature in the existing AN/UPA-59/60 decoders does not perform in an acceptable manner when it is installed in typical IFF systems. A modification of the existing decoders is proposed, consisting of a one-for-one replacement of a printed-circuit board within the main equipment. This replacement board makes use of a new intergrated circuit, called the rubber shift register, which was developed under an NRL contract and represents the first known use of this component.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
May 01, 1972
Accession Number
AD0746445

Entities

People

  • G. P. Nelson

Organizations

  • United States Naval Research Laboratory

Tags

Communities of Interest

  • Advanced Electronics
  • Air Platforms
  • Energy and Power Technologies
  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Aircrafts
  • Circuit Boards
  • Circuit Testers
  • Diagrams
  • Iff Systems
  • Integrated Circuits
  • Logic Gates
  • Memory Devices
  • Printed Circuit Boards
  • Printed Circuits
  • Radar
  • Security
  • Semiconductor Devices
  • Shift Registers
  • Transistors
  • Waveforms
  • Wiring Diagrams

Readers

  • Computer Science/Computer Engineering/Data Science/Digital Signal Processing.
  • Naval Mine Countermeasure Systems Development.
  • Systems Analysis and Design