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 band switching in wireless local access network
Pluggable power cell for an inverter
Configurable logic cells
Fusing device to prevent overheating of a heating member and image forming apparatus having the same
(4947
End-of-session authentication
Deadline-driven parallel execution of queries
  Randomly Featured Patents
Tris-hydroxymethyl alkane dicarboxylate extended esters as low calorie fat mimetics
Height-adjustable work bench
Device and method for detecting vehicle engine pulse generator plate tooth defects
Arylthiovinylcyclopropanecarboxylate insecticides
Sustained release compositions comprising hydroxypropyl cellulose ethers
Hydraulic antivibratory devices
Compositions for topical application and other products from fresh beeswaxes
Blade for axial fan
Blanket tube removal device
Computing system and control method