Resources Contact Us Home
Acquisition system for continuous-wave frequency modulation object detector

Image Number 10 for United States Patent #4200871.

A continuous-wave frequency-modulation active radiometric target seeking device performs search, acquisition, and tracking functions. A technique is provided for target range discrimination and recognition using a pair of narrow band i.f. filters also improving both signal-to-clutter ratio and signal-to-receiver noise ratio. Target search is accomplished with simultaneous and synchronized range and antenna azimuth scanning with range bins effectively swept across the target by variably modulating the transmitted carrier frequency. Recognition of a substantially point target is achieved by a bipolar pulse discriminator responsive to the i.f. filter pair. Upon target acquisition, tracking is maintained by imposing a high frequency dither upon the modulation frequency in a closed loop control using only a single i.f. filter.

  Recently Added Patents
Removable cartridge cleaner
Decorative layered panel device and process
Absorbent article containing structured fibers
Semiconductor device
Managing requests in a wireless system
Method for fabricating light guide plate
Tire having a structural element reinforced with a hybrid yarn
  Randomly Featured Patents
Manually drivable apparatus for comminuting foods
Pyrophoric flare
Vehicle rear suspension apparatus
Cycloalkyl derivatives of 3-hydroxy-4-pyridinones
Laser aiming apparatus using a rocker
Adjustable ladder
Pair of ski
Brake pad unit with replaceable friction elements
Method and apparatus for providing calling number identification alias in communications system
26,27-homologated-20-EPI-2-alkylidene-19-nor-vitamin D compounds