Joseph R Guerci2509 Utah St, Arlington, VA 22207

5406291, Apr 11, 1995

Oct 5, 1993

8/131608

Joseph R. Guerci - Astoria NY
Raymond Goetz - Commack NY
John DiModica - Deer Park NY

Grumman Aerospace Corporation - Bethpage NY

G01S 314

342451

A passive emitter location system is capable of performing emitter location autonomously from a single airborne observation platform and includes a bearing measurement system, a system for measuring doppler induced frequency shifts, and means for estimating the emitter location based on non-simultaneous measurement of the bearing and frequency using extended Kalman filters preferably initialized by a single measurement delayed initialization procedure.

5448645, Sep 5, 1995

Feb 28, 1994

8/203339

Joseph R. Guerci - Astoria NY

Raymond Guerci International, Inc. - Staten Island NY

G10K 1116

381 71

An active noise cancellation device and method for reducing fan blade noise over a broad spatial area. The device comprises a microphone, a band pass filter, and audio amplifier, and a speaker array. The microphone captures the sound produced by the fan and converts it into an electrical signal. This electrical signal is input to the band pass filter which has a center frequency equal to product of fan speed and the number of fan blades which comprise the fan. The band pass filter attenuates any signals other than the primary harmonic sound produced by the rotating fan blades. The filtered signal from the band pass filter is input to the audio amplifier. The audio amplifier conditions the signal for input to the speaker array. Accordingly, each speaker in the array receives and outputs an audio signal of equal amplitude and phase as that produced by the rotating fan blades. The speaker array is mounted on or close to the fan hub in a symmetric pattern commensurate with the fan blade geometry.

5175552, Dec 29, 1992

Jun 18, 1991

7/717058

Philip G. Grieve - New York NY
Joseph R. Guerci - Astoria NY

Grumman Aerospace Corporation - Bethpage NY

G01S 1300

342 82

The signal-to-noise ratio of a received radar echo is maximized by maximizing the received energy E of the echo. The energy E is maximized when the transmitted waveform s(t) is chosen so that ##EQU1## is maximized, where y(t) is the echo signal echoing from the target.

6002807, Dec 14, 1999

Jan 11, 1996

8/583923

Joseph R. Guerci - Astoria NY

Northrop Grumman Corporation - Los Angeles CA

G06K 962
G06K 15316
G06K 15332
G06F 1715

382278

A rotationally invariant correlator which correlates an arbitrarily rotated image with a large database of similar stored images. The correlator initially scans the image to produce a two-dimensional array of pixels representative thereof. A plurality of concentric rings of pixel data are then produced from the two-dimensional array of pixels. A Fast Fourier Transform is taken of each ring of pixel data which produces an amplitude spectra of the frequency components of that ring of pixel data, which is then normalized. The normalized amplitude spectra for the image being correlated is then compared with normalized amplitude spectra of similar rings of pixel data for similar images in memory, and any matches are identified. The width of each ring of pixel data is selected to be smaller than the size of the smallest features which are to be resolved, while being sufficiently wide to smooth out extraneous noise. Several of the processing steps for each ring of pixel data are performed in parallel in parallel processing arrangements.

5392050, Feb 21, 1995

Aug 12, 1993

8/105407

Joseph R. Guerci - Astoria NY
Fred Comploier - E. Rockaway NY
Alicia Kee - Hempstead NY

Grumman Aerospace Corporation - Bethpage NY

G01S 1372

342 90

In a method of recognizing a radar target object type, target range, heading and speed information are determined. A plurality of RCS for different targets of interest as a function of frequency and aspect angle are stored. Motion information of a platform on which a radar system is carried is determined. The target range, heading and speed information and the motion information of the platform with stored RCS, are processed, and what the observed radar pulse echo should be over the operational frequency band is predicted therefrom. Predicted information is compared with the measured pulse echoes to determine which target is present.

5146229, Sep 8, 1992

Jun 25, 1991

7/720671

Joseph R. Guerci - Astoria NY
Robert W. Schutz - Lindenhurst NY
John D. Hulsmann - Miller Place NY

Grumman Aerospace Corporation - Bethpage NY

G01S 1328

342204

A pulse compression modified OMIR waveform s. sub. N (t) is obtained by computing the OMIR eigenfunctions. phi. sub. i, i=1, 2,. . . ,. infin. , for an autocorrelation function of the expected target impulse response, specifying a waveform c(t) having a desired pulse compression characteristic, and generating expansion terms ##EQU1## for various expansion indices N, until a desired waveform is obtained. The expansion coefficients c. sub. i (t) are given by ##EQU2##.

5121125, Jun 9, 1992

Jan 18, 1991

7/643140

Joseph R. Guerci - Astoria NY
Philip G. Grieve - New York NY

Grumman Aerospace Corporation - Bethpage NY

G01S 1328

342204

An optimized theoretical approach to the design of a waveform for a matched illumination-reception radar system incorporates radar cross section codes along with detailed target geometry and system constrains to maximize the signal energy of a received echo. An Eigensystem is used to generate a family of solutions, one of which is chosen based upon system constraints to optimize the waveform.

5381154, Jan 10, 1995

Sep 3, 1993

8/115691

Joseph R. Guerci - Astoria NY

G01S 1356

342 90

A bank of matched filters are employed to impose on a transmitted pulse, as well as the optimum matched filter receiver response, exact amplitude and phase modulations necessary to maximize the likelihood of accurate target identification. This is accomplished by subjecting the output of each matched filter (corresponding to a target signature) to a threshold level detector to eliminate identification outputs caused solely by noise. The outputs from the threshold device represents the target identification from each matched filter. Since each matched filter corresponds to a particular target, the highest output identification signal will indicate the presence of a corresponding target.