Accession Number:

ADA083493

Title:

Near Millimeter Wave Radar Technology.

Descriptive Note:

Interim technical rept. on Phase 1,

Corporate Author:

GEORGIA INST OF TECH ATLANTA ENGINEERING EXPERIMENT STATION

Report Date:

1980-01-11

Pagination or Media Count:

106.0

Abstract:

The proposed system consists of a transmitter, receiver, antenna duplexer, and antenna subsystem. An attempt will be made to phase lock the Varian VKY-2429R EIO transmitter to the receiver local oscillator to give a quasi-coherent system. Quasi-coherent means that the transmitted pulse is coherent near its center and incoherent during rise and fall times. The receiver will be of all solid state design, using an f4 subharmonic mixer developed at Georgia Tech together with a Hughes 55 GHz phase locked Gunn local oscillator. The antenna duplexer will be an optical subsystem, depending partially for its operation on the change in sense of circular polarization when reflected from a single-bounce target, and partially on the operation of an interfereometric switch used for receiver isolation. The antenna will be a 15 cm 6 inch lens machined from a piece of TPX plastic, and the beam will be steered by a 2-axis gimbal system. Although there will be no signal processing hardware included in the proposed system, the antenna will have both a raster scan mode for search and a conical scan mode for track. The entire system will be designed to be amendable to the addition of radar signal processing at a later time.

Subject Categories:

  • Active and Passive Radar Detection and Equipment
  • Radiofrequency Wave Propagation

Distribution Statement:

APPROVED FOR PUBLIC RELEASE