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
Circuit arrangement for a piezo transformer, and method therefor
Integrated circuits with magnetic core inductors and methods of fabrications thereof
Method and system for updating device management application meter read logic
Control service for relational data management
Method and laser receiver for acoustically indicating a laser beam
Transmitting apparatus and retransmitting method
Image manipulating system and method
  Randomly Featured Patents
Golf club head with a compression-molded, thin-walled aft body
Trophy ornament
Vertically displaceable platform
Process for the preparation of phenol resins using by-products of the chlorination of butadiene as reactants
Electron emissive film and method
Electrode materials and lithium battery systems
Stable oral pharmaceutical dosage forms
Method and apparatus for distinguishing Crohn's disease from ulcerative colitis and other gastrointestinal diseases by detecting the presence of fecal antibodies to Saccharomyces cerevisiae
Hollow cage golf bag cover
Condition responsive by-pass valve construction