Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Vehicle radar apparatus










Image Number 10 for United States Patent #6903678.

A vehicle radar system extracts peak frequencies fbu and fbd of respective beat signals B1 to B9 representing the frequency difference between a transmission signal fs and a plurality of received signals fr1 to fr9. The phase difference of respective beat signals B1 to B9 at the peak frequencies fbu and fbd is converted into a frequency signal. In the case of reflection from a close range road surface or raindrops, the phase difference of each beat signal is irregular. The peak frequency intensity of a converted frequency signal is small. This system compares the peak frequency intensity of the converted frequency signal with predetermined criterion intensity. Then, the system identifies an objective with a close range road surface or raindrops when the peak frequency intensity of the converted frequency signal is not larger than the predetermined criterion intensity.








 
 
  Recently Added Patents
Method and apparatus for representing sensory effects and computer readable recording medium storing user sensory preference metadata
Pausing a VoiceXML dialog of a multimodal application
Method for identifying bacteria in a sample
Wireless communications system, wireless communications apparatus, wireless communications method and computer program for wireless communication
Polypeptides having beta-glucosidase activity and beta-xylosidase activity and polynucleotides encoding same
Systems, devices, methods, and compositions including fluidized x-ray shielding compositions
.beta.-2 microglobulin as a biomarker for peripheral artery disease
  Randomly Featured Patents
Signalling device including crash indication for automobiles
Bicycle sprocket apparatus with a chain support structure
Electrostatic ultrasonic transducer and ultrasonic speaker
Downlink control information for efficient decoding
Arrangements for forming roof structures of vehicle bodies
Method and apparatus for preparing and positioning a web for splicing
Decorative bed frame
Condition monitoring system for wind turbine generator and method for operating wind turbine generator
Process and apparatus for testing the tightness of seam joints of synthetic resin sheets by means of vacuum
Fixed point FIR filter with adaptive truncation and clipping and wireless mobile station using same