MICROWAVE AUTOMATIC VEHICLE IDENTIFICATION (MAVI) SYSTEM

A system for identifying moving objects such as vehicles, trucks, buses, containers, etc., in which a passive label having a number of dipoles in accordance with a code is attached to the object, is described. A synthetic aperture radar consisting of a Gunn diode mounted within a resonant cavity and connected to a horn is used to illuminate the label. The Gunn diode operates as a homodyne so that signals from the label are also detected by the diode as a number of overlapping chirp signals, which are sent to a computer for processing. The computer output is a pulse train with pulses corresponding to dipoles in the label. A number of tests have been made indicating that labels can be read regardless of range and vehicle speed. A number of horns may be strategically located in a city or along a highway, and these horns can be multiplexed into a common computer to provide an inexpensive all weather automatic vehicle identification system.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00189545
• Corporate Authors:

  Institute of Electrical and Electronics Engineers (IEEE)

  3 Park Avenue, 17th Floor
  New York, NY  United States  10016-5997
• Authors:
  • Constant, J N
• Publication Date: 1974-5

Media Info

• Features: Figures; References;
• Pagination: p. 44-54
• Serial:
  • IEEE Transactions on Vehicular Technology
  • Volume: VT23
  • Issue Number: 2
  • Publisher: Institute of Electrical and Electronics Engineers (IEEE)
  • ISSN: 0018-9545
  • Serial URL: http://ieeexplore.ieee.org/xpl/mostRecentIssue.jsp?punumber=25

Subject/Index Terms

• TRT Terms: Automatic car identification; Automatic vehicle identification; Communication and control; Information systems; Microwaves; Multiplexing; Radiometry
• Old TRIS Terms: Aperture systems; Microwave radiometry
• Subject Areas: Highways; Operations and Traffic Management;

Filing Info

• Accession Number: 00084740
• Record Type: Publication
• Source Agency: IEEE Transactions on Vehicular Technology
• Files: TRIS
• Created Date: Jul 2 1975 12:00AM