Resources Contact Us Home
Doppler determination system for MTI radars

Image Number 2 for United States Patent #5036325.

A doppler determination system uses an amplitude comparison of odd and even MTI functions derived from the same signal returns in an MTI radar system to determine the doppler frequency of a target return. The system determines the ratio of the amplitudes of the return of a single canceller circuit with a delay of 2/PRF and the amplitude of the return of a double canceller with two delays of 1/PRF. The ratio is then employed to estimate the doppler frequency of the return. The respective amplitudes of the two MTI circuits are also processed in a 3-dimensional radar application to provide estimates of the target radar cross-section and elevation angle, and with PRF switching to determine the target unambiguous range rate.

  Recently Added Patents
Method and system for determining an optimal missile intercept approach direction for correct remote sensor-to-seeker handover
Call admission control method and system
Magnetic circuit and speaker using same
Downlink scheduling in fractional frequency reuse (FFR) systems
Titanium compounds and complexes as additives in lubricants
Peptides useful in the treatment and/or care of skin, mucous membranes, scalp and/or hair and their use in cosmetic or pharmaceutical compositions
Insulated container sleeve
  Randomly Featured Patents
Process for providing localized variation in the color density of fabrics
Inhibitors of factor Xa
Method and apparatus for applying a function to a localized area of a digital image using a window
Drum type washing machine
Trouble diagnosing device of control circuit system
Compositions, systems, and methods for creating in situ, chemically cross-linked, mechanical barriers
Electronic wellhead apparatus for measuring properties of multiphase flow
Semiconductor memory
Measuring volume and constituents of cells