Jackson Allen Mobbs
Engineering at Birchwood Cir, Cabot, AR
License number
Louisiana EI.0018996
Issued Date
Jun 8, 1999
Expiration Date
Sep 30, 2013
Category
Civil Engineer
Address
Address
138 Birchwood Cir, Cabot, AR 72023
Professional information
Amplitude Temporal Order Dependent Adaptive Processor
US Patent:
6629063, Sep 30, 2003
Filed:
Jul 30, 2001
Appl. No.:
09/916594
Inventors:
Ronald A. Wagstaff - Slidell LA
Jackson A. Mobbs - Cabot AR
Jackson A. Mobbs - Cabot AR
Assignee:
The United States of America as represented by the Secretary of the Navy - Washington DC
International Classification:
G01S 380
US Classification:
702189, 702190, 367135, 367124
Abstract:
An acoustic signal processor that samples acoustic data, performs a spectrum analysis of the sampled acoustic data, stores the acoustic data in corresponding frequency bins, and then filters acoustic data stored in a frequency bin by applying a power-law arithmetic operation to the frequency bin acoustic data, such that the power-law arithmetic operation is adaptively changed based on an order dependent determination of whether the frequency bin acoustic data is representative of noise or clutter, or whether it is representative of a signal of an object.
Phase Fluctuation Based Signal Processor
US Patent:
6418083, Jul 9, 2002
Filed:
Jan 12, 2001
Appl. No.:
09/759765
Inventors:
Ronald A. Wagstaff - Oxford MS
Jackson A. Mobbs - Cabot AR
Jackson A. Mobbs - Cabot AR
Assignee:
The United States of America as represented by the Secretary of the Navy - Washington DC
International Classification:
H04B 106
US Classification:
367135, 367901, 367124
Abstract:
A method for characterizing degree of phase fluctuation of a signal and a signal processor for accomplishing such characterization, is described, in which a time series of complex data vectors are received, initial spectral processing is accomplished, an estimate of the excess phase rotation is made, and a quantity WSC equal to is calculated. Based on the different phase behavior of signal and noise, the quantity WSC is compared to a preset threshold value to determine whether the received signal is phase stable signal or whether it is noise or clutter. In another embodiment of the invention, the quantity WSC is used to modify the results of another signal processor to improve the signal to noise ratio of the other signal processor. For example, in one embodiment, the results of a processor based on the average signal amplitude AVGPR is divided by the quantity WSC raised to a real exponent, leading to a reduction in noise and easier discrimination of signals. In other embodiments, the fluctuation of the amplitude of a received signal is characterized by determining a value Based on the behavior of noise/clutter compared to signal, the quantity WISPR is compared to a preset quantity to discriminate between noise and signal.