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
Di and tri- substituted oxathiazine derivatives, method for the production, method for the production thereof, use thereof as medicine and drug containing said derivatives and use thereof
Process for preparation of Efavirenz
Integrated projector system
Thermoforming sheet loading apparatus and method
Related news articles
Drugs for prophylaxis or mitigation of taxane-induced neurotoxicity
Flame-retardant polyamide composition
  Randomly Featured Patents
Spectral reflectance scale method and apparatus
Back-to-back proportioning valve
Submersible pump
Service oriented architecture aggregation
Cathode ray tube display device
Ohmic contacts for high electron mobility transistors and a method of making the same
Air cleaning system
Sash structure formed by sections and square connection elements
Lamp
Compound bow with string-cable spacer