Research/Patents/US 5657022
US 5657022

UNAMBIGUOUS RANGE-DOPPLER PROCESSING METHOD AND SYSTEM

Assignee

UNITED STATES OF AMERICA, THE, AS REPRESENTED BY THE UNITED STATES AIR FORCE

Filed

Nov 17, 1992

Granted

Aug 12, 1997

Location

Arlington VA (defense contractors)

Abstract

Range-Doppler ambiguity is eliminated from an ultra-wideband radar system by transmitting an ultra-wideband chirped pulse towards a moving target, and mixing it with the doppler-shifted chirped pulse which is received as a target echo return signal. Multioctave radar tracing systems can potentiality track stealth aircraft without ambiguity since pulses containing many frequencies can defeat narrow-band radar absorbing material coatings. The unambiguous range-doppler signal processing method mixes the chirped pulse to yield an instantaneous Doppler frequency (which indicates target velocity) and a rate of change in the instantaneous Doppler frequency (which indicates target acceleration).

Source: Google Patents

35 USC §181 Secrecy Order

Imposed

Feb 17, 1993

Rescinded

Oct 3, 1996

Duration

3 years, 7 months

Inventor

  • 1PAUL VAN ETTEN

Sensitive facility: Arlington VA (defense contractors)

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Back to patent indexSource: USPTO 35 USC §181 secrecy order records