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
Imidazolidine-2,4-dione derivatives, and use thereof as a cancer drug
Selecting modulation and coding scheme in the presence of interference
Charged-particle beam lens
Methods for non-linear image blending, adjustment and display
Cleaning device, and image forming apparatus, process cartridge, and intermediate transfer unit each including the cleaning device
Synchronization of communication equipment
Rear bumper for an automobile
  Randomly Featured Patents
Electric coffee-machine
Workpiece carrier for conveying a workpiece to be painted
Circular log amnesia detection
Patterned magnetic media via thermally induced phase transition
Standing jewelry box with shaped windows
Foamable alcohol product and process of producing a foamable alcohol product
Stepping motor
Photographic recording material
Vehicle rear upper bumper cover
Bulk acoustic wave resonator, bulk acoustic wave filter, RF module including bulk acoustic wave resonator and/or filter, and bulk acoustic wave oscillator