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
Wall flow type exhaust gas purification filter
Pattern forming method using developer containing organic solvent and rinsing solution for use in the pattern forming method
Forming agent for gate insulating film of thin film transistor
Multichannel device utilizing a centralized out-of-band authentication system (COBAS)
Ventilated vacuum communication structure
Vehicle inertial sensor systems
Switching device and electronic apparatus using the same
  Randomly Featured Patents
Core network processing load reduction
Frequency multiplexed radio link apparatus
Control apparatus and method for internal combustion engine
Pull chain adapter
Interlock switch baseplate assembly
Lubricating system for gas turbine engines
Communication apparatus preventing communication interference
Container filling machine
Method for delivering a molten silicon composition into porous substrates
Window candle holder