Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
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
Digital video disc player
Electric power supply system and electric power supply system for motor vehicle
Organic light emitting display apparatus
Method and system for automatically hiding irrelevant parts of hierarchical structures in computer user interfaces
Substituted indolo 4,3 FG quinolines useful for treating migraine
Lower set insert with a lower ball seat for a downhole plug
Digital rights management for media streams
  Randomly Featured Patents
Intercepting valve
Plate concrete dowel system
Solar collector
IC memory cells with reduced alpha particle influence
Wide angle isotope separator
Scalable heat dissipating microelectronic integration platform (SHDMIP) for lighting solutions and method of manufacturing thereof
Process for the preparation of tetrahydrofolates
Process for the preparation of oligophenyls dihalogenated in the 4,4'-position
Thermal activation mechanisms and methods for use in oilfield applications
Check valve having temperature response