Ail Systems, Inc.

James P Thompson

C David Wang

William T Walter

Apparatus for detecting molecular vapors in an atmospheric region includes an interferometer which monitors light parameter data signals received and provides an interferometer light parameter signal corresponding to the light parameter data signals at a plurality of frequencies. The apparatus further includes an interferogram detector/converter which records and digitizes the interferometer light parameter signal to generate a plurality of discrete data points wherein each discrete data point corresponds to the interferometer light parameter signal at a specific frequency. The apparatus also includes a Fourier transform circuit for receiving the discrete interferometer light parameter signal and providing a Fourier transformed molecular parameter data signal. The apparatus further includes a probabilistic neural network for receiving and sorting the Fourier transformed molecular parameter data signals without the use of a priori training data.

Apparatus and method for detection of molecular vapors in an atmospheric

Apparatus for motion detection and tracking of objects in a region for collision avoidance includes a signal transmitter which provides first and second detection signals for at least partial reflection by an object located in a spatial region. The apparatus further includes a signal receiver for receiving the deflected first and second detection signals corresponding to first and second object parameter data signals. The apparatus further includes a Fourier transform circuit for receiving the first and second object parameter data signals and providing first and second Fourier transform object parameter data signals. The apparatus further includes a probabilistic neural network for receiving and sorting the first and second Fourier transform object parameter data signals without the use of a priori training data.

Apparatus and method for motion detection and tracking of objects in a

A method and apparatus for use with a multichannel receiver to eliminate signal sidelobes within a received signal time frame is disclosed. The elimination of signal sidelobes within a channelized receiver is accomplished by using an analog preprocessor. The analog preprocessor is capable of producing an amplitude mask based upon the determination of the greatest amplitude and frequency channel in a two-dimensional receiver system or frequency channel and time slot in a three-dimensional receiver system signal. The amplitude mask covers a predefined space in time and frequency equal to or below the peak signal amplitude. A signal in the frequency/time cell space covered by the mask must have a magnitude exceeding the magnitude of the amplitude mask in order for the signal to pass through the analog preprocessor for further processing.

Method and apparatus for eliminating signal sidelobes from a received

An adaptive probabilistic neural network (APNN) includes a cluster processor circuit which generates a signal which represents a probability density function estimation value which is used to sort input pulse parameter data signals based upon a probability of obtaining a correct match with a group of input pulse parameter data signals that have already been sorted. In the APNN system, a pulse buffer memory circuit is contained within the cluster processor circuit and temporarily stores the assigned input pulse parameter data signals. The pulse buffer memory circuit is initially empty. As the input pulse parameter data signals are presented to the APNN, the system sorts the incoming data signals based on the probability density function estimation value signal generated by each currently operating cluster processor circuit. The current input pulse parameter data signal is sorted and stored in the pulse buffer memory circuit of the cluster processor circuit. A small probability density function estimation value signal indicates the current unassigned input pulse parameter data signal is not recognized by the APNN system. A large probability density function estimation value signal indicates a match and the current input pulse parameter data signal will be included within a particular cluster processor circuit.

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Greenlawn, NY, United States of America

James P Thompson