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
Triple-action pest control formulation and method
System and method for confirming delivery of an electronic message
Optical writer and image forming apparatus including same
Electrophotographic photoreceptor, image-forming apparatus, and electrophotographic cartridge
Method of patterning color conversion layer and method of manufacturing organic EL display using the patterning method
Real-time application of filters based on image attributes
Catalysts for polyurethane coating compounds
  Randomly Featured Patents
Contour and outline transducer gage assembly
Fuel control device and methods of making the same
Golf glove
Apparatus for and method of reducing power consumption in a cable modem
Hydrostatic loop dump valve for reducing input torque required by hydrostatic unit
Memory channel with bit lane fail-over
Semiconductor memory device
14-deoxy-14.alpha.-cardenolides 3.beta.-thioderivatives and pharmaceutical composition comprising same for treating cardiovascular disorders
Ghost cancelling system
Subterranean drainage device