Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Sonar doppler system with a digital adaptive filter










Image Number 3 for United States Patent #4914639.

A doppler sonar speed measuring system incorporating a digital adaptive filter responsive to the difference in newly received raw speed data and previously received speed data to determine the amount and sign of change of the previously received data. The allowable amount of change increases to a maximum allowed value if the sign of the change remains the same on successive received data as under acceleration conditions and reduces to a minimum value when the sign changes on successive received data.








 
 
  Recently Added Patents
Kit and method for the capture of tumor cells
Pill identification and counterfeit detection method
System and method for associating financial transaction data with a user's project data using a portable electronic device
White light emitting diode (LED) lighting device
Dual-leadframe multi-chip package and method of manufacture
Anomalous data detection method
(4930
  Randomly Featured Patents
Three dimensional light electronic programming guide
Process for the manufacture of optically active compounds
Scanning beam navigational beacon with transmitted coherence reference signal and thinned two-dimensional phased array
Insert holder and key therefor
Mount for mounting a cab on a vehicle frame
Optical receiver with wide dynamic range transimpedance amplifier
Intermediates in the synthesis of camptothecin and related compounds and synthesis thereof
Apparatus for subsea intervention
Bit leg outer surface hardfacing on earth-boring bit
Transistor for preventing a thermal runaway caused by temperature rise in a bias circuit of the transistor