James D Michels Deceased12235 Virginia Dr, Leesburg, FL 34788

6771723, Aug 3, 2004

Jul 14, 2000

09/616770

Dennis W. Davis - Eustis FL, 32726
James H. Michels - Henderson NY, 13650

H04B 110

375350, 375227, 375340, 375343, 375346

Disclosed is an apparatus and method for improving the detection of signals obscured by either correlated Gaussian or non-Gaussian noise plus additive white noise. Estimates from multichannel data of model parameters that describe the noise disturbance correlation are obtained from data that contain signal-free data vectors, referred to as âsecondaryâ or âreferenceâ cell data. These parameters form the coefficients of a multichannel whitening filter. A data vector to be tested for the presence of a signal passes through the multichannel whitening filter. The filter output is then processed to form a test statistic. The test statistic is compared to a threshold value to decide whether a signal is âpresentâ or âabsent. â The method is effective in detecting targets without knowledge of the non-Gaussian noise statistics.

5921937, Jul 13, 1999

Jul 21, 1998

9/119927

Dennis W. Davis - Eustis FL
Jaime R. Roman - Palm Beach Gardens FL
James H. Michels - Clinton NY

A61B 500

600508

The invention is directed to a method and associated system for the detection of various physiological features in multichannel sensor data. Truth data organized in the form of a vector sequence is used to generate a multichannel state variable model for data that is known to lack physiological features of interest. Such state variable models are obtained using one or more of a host of system identification algorithms. Upon identification of the model parameters, a multichannel inverse filter is derived from the model parameters. The inverse filter can be used to whiten or decorrelate components of sensor data sequences that are not associated with the physiological features of interest. The unwhitened output of the inverse filter then represents the physiological features of interest that can be extracted from the concomitant white noise. On this basis, a number of such filters can be produced for a variety of undesired physiological feature components of the data that occur separately or in combination.

6091361, Jul 18, 2000

May 12, 1998

9/076395

Dennis W. Davis - Eustis FL
Jaime R. Roman - Palm Beach Gardens FL
James H. Michels - Clinton NY

G01S 316
G01S 1300

342378

Processing methods and associated hardware architectures for the spatio-temporal processing of phased array sensor signals are disclosed. The processing method employs a joint spatio-temporal domain processing approach. The disclosed method is an optimal estimation scheme which exhibits significantly reduced computational burden. Suppression of interference sources at angles-of-arrival other than the desired signal is achieved implicitly. The associated system architecture provides not only the ability to achieve good joint angle-Doppler estimates, but offers the ability to easily trade the relative performance in each domain. The disclosed approach emphasizes the use of multiple hypothesis testing with spatio-temporal whitening filters.