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
Semiconductor memory device and manufacturing method thereof
Dyes and methods of marking biological material
High performance adaptive switched LED driver
Method and system for reduction of decoding complexity in a communication system
Brushless motor drive apparatus and drive method
3D solid-state arrangement for solid state memory
Accessory sleeve
  Randomly Featured Patents
Musical tone control system for grand-type piano
Autonomous manoeuvring for spinning spacecraft
Shifting arrangement for two clutches for the shifting between a single-axle standard drive and a two-axle all-wheel drive for a motor vehicle having two drivable vehicle axles
Display rack
Method of producing Ni-Cu-Zn ferrite material
Charge control circuit and battery charger including a charge control circuit
Applicator for installing two part connector assemblies in cables
Monofunctional monomer having cage oligosiloxane structure and method of making
Moving coil type pickup cartridge
Synchronous acquisition circuit and a synchronous acquisition method of a spread spectrum code