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 Inhibiting neurotransmitter reuptake Shoe with stripe Spa filter media Publishing user submissions Assessment of cardiac health and thrombotic risk in a patient Filter, coherent receiver device and coherent receiving method Odor transmission-resistant polymeric film   Randomly Featured Patents Safety ladder Popping kettle assembly Method of discriminating and change a yarn package In-stent restenosis detection device Method of estimating mechanical hardness of steel from its magnetic properties Drill bit Microencapsulated organophosphorus insecticidal composition for agricultural use Drinking glove Vehicle alignment measurement apparatus and method Methods and systems for reducing acoustic echoes in communication systems © 2006-2008 PatentGenius. All Rights Reserved.