Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Least mean square (LMS) normalizer for active sonar










Image Number 7 for United States Patent #5349567.

A normalizer based on a Least Mean Square (LMS) adaptive algorithm configured to provide effective normalization when the background noise is locally non-stationary and when the target may be subject to time spread of unknown extent. The LMS algorithm used in the normalizer includes an adaptive filter in both the primary and reference inputs as a means of adapting to variations in both the signal and noise statistics. The LMS algorithm is implemented on the logarithm of the data, so that the difference minimized in the LMS structure drives the ratio of the signal power to noise power to a constant value. The algorithm can be used as a range normalizer by running it over range in each doppler bin, or as a frequency normalizer by operating across doppler in each range bin. By continually adapting to the statistics present in the data, the normalizer more effectively deals with the variations in the noise and signal statistics.








 
 
  Recently Added Patents
Haworthia plant named `CAPETOWN`
Semiconductor pressure sensor
Semiconductor overlapped PN structure and manufacturing method thereof
Interface circuit and interface system
Device and method for processing input data of protective relay
Imaging lens
Wristband with detachable labels
  Randomly Featured Patents
Pressure sensor featuring pressure loading of the fastening element
Paraffin wax compositions and rubber compositions into which paraffin wax compositions are incorporated
Process for the sulfonation of an aromatic compound
Hand-operated apparatus for peeling off the outer jacket layer of electric lines and cables
3D stereo display method and a device thereof
Glasses frame
Apparatus and method for filling an ampule of a needle-less injector
Apparatus and method for electronic RIN reduction in fiber-optic sensors utilizing filter with group delay
Focal plane shutter for cameras
Dual clutch