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
Circuit breakers
Video reproducing apparatus and video reproducing method
Method for building taxonomy of topics and categorizing videos
Synthesis of amines and intermediates for the synthesis thereof
Method for detection and characterization of a microorganism in a sample using time-dependent intrinsic fluorescence measurements
Sheet coil type resolver
Information recording medium and information processing method for accessing content with license or copyright protection
  Randomly Featured Patents
Phase shifting device with rotatable cylindrical case having driver means on the end walls
Protective glasses assembly
Angled slots for installation of outdoor metallic boxes
Disk brake calliper
Direct link setup procedure in tunneled direct link setup wireless network and station supporting the procedure
Narrow PSD hydraulic cement, cement-SCM blends, and methods for making same
Enhanced shortest-job-first memory request scheduling
Apparatus for fabricating dunnage material from continuous web material
Fuel bundle design for enhanced usage of plutonium fuel
Roll bending device for forming plastic sheet