Resources Contact Us Home
Sonar doppler system with a digital adaptive filter

Image Number 4 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
Stroboscopic image modulation to reduce the visual blur of an object being viewed by an observer experiencing vibration
Arrays of optical confinements and uses thereof
System and method of supplying an electrical system with direct current
Isolated SCR ESD device
Providing a feedback loop in a low latency serial interconnect architecture
Method and device for reliable estimation of network traffic
  Randomly Featured Patents
Low-power decimator for an oversampled analog-to-digital converter and method therefor
Neutron well logging
Horizontally configured connector
Method for sealedly forming envelope
Fat replacer, especially for foods and cosmetics
Optical fiber transmission line
LDD MOS transistor with improved uniformity and controllability of alignment
Bar code symbol reading system supporting visual or/and audible display of product scan speed for throughput optimization in point of sale (POS) environments
Optical scanning system
Stack structure of carrier boards embedded with semiconductor components and method for fabricating the same