Resumes
Resumes
Oleg Brovko Phones & Addresses
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3638 Mountain View Ave, Los Angeles, CA 90066 (310) 398-2669
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3638 Mountain View Ave #A, Los Angeles, CA 90066 (310) 398-2669
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565 Leonard Ave, Los Angeles, CA 90022
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3565 Redwood Ave, Los Angeles, CA 90066
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El Segundo, CA
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Kerman, CA
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3638 Mountain View Ave, Los Angeles, CA 90066
Work
Position:
Service Occupations
Education
Degree:
High school graduate or higher
Publications
Us Patents
Phased Array Antenna System With Virtual Time Delay Beam Steering
View pageUS Patent:
6529162, Mar 4, 2003
Filed:
May 17, 2001
Appl. No.:
09/859927
Inventors:
Irwin L. Newberg - Pacific Palisades CA, 90272
Oleg Brovko - Los Angeles CA, 90066
Steve I. Hsu - Rancho Palos Verdes CA, 90275
Robert A. Kosmala - Playa Del Rey CA, 90193
Trung T. Nguyen - Huntington Beach CA, 92646
Ricardo Rico, Jr. - Downey CA, 90241
Oleg Brovko - Los Angeles CA, 90066
Steve I. Hsu - Rancho Palos Verdes CA, 90275
Robert A. Kosmala - Playa Del Rey CA, 90193
Trung T. Nguyen - Huntington Beach CA, 92646
Ricardo Rico, Jr. - Downey CA, 90241
International Classification:
H01Q 322
US Classification:
342375, 342372, 342373
Abstract:
A system and technique for phased array antenna beam steering for transmitting and receiving without sending the waveform through an actual (physical) time delay when a time varying frequency is used as the waveform. The inventive system is adapted for use with an antenna having an array of radiating elements and includes a plurality of signal sources. Each source is adapted to provide a signal having a predetermined frequency offset signal for an associated radiating element or set of radiating elements. For transmit a plurality of first mixers is provided. Each of the first mixers is coupled to receive an excitation signal as a first input and the output from a respective one of the sources as a second input. The output of each mixer is coupled to a respective subset of the antenna radiating elements. In effect, each of the sources provides a virtual time delay.
Spatial Multibeam Ambiguity Resolving Technique (Smart)
View pageUS Patent:
6888490, May 3, 2005
Filed:
Jul 20, 2004
Appl. No.:
10/894792
Inventors:
Oleg Brovko - Los Angeles CA, US
Eric Wayne Day - Lomita CA, US
Trung T. Nguyen - Huntington Beach CA, US
Jing Zhao - Moreno Valley CA, US
Mark S. Klemens - Los Angeles CA, US
Eric Wayne Day - Lomita CA, US
Trung T. Nguyen - Huntington Beach CA, US
Jing Zhao - Moreno Valley CA, US
Mark S. Klemens - Los Angeles CA, US
Assignee:
Raytheon Company - Waltham MA
International Classification:
G01S013/90
US Classification:
342 25A, 342 25 R, 342 25 F
Abstract:
A synthetic aperture radar (SAR) image of a wide coverage area is acquired during a frame containing a first plurality of ambiguities induced in the SAR image from radar scatterers within the area. The area is illuminated with radar pulses and a segmented receive antenna oriented towards the area. The segmented receive antenna has a second plurality of sub-apertures, where the second plurality of sub-apertures is larger than the first plurality of ambiguities. Each sub-aperture has its own receiver. The digital stream from each receiver is stored in a computer for the duration of the frame to obtain frame data. A SAR image is extracted from the frame data. The first plurality of ambiguities are identified from analysis of the frame data, and a correction is computed to account for the first plurality of ambiguities contained within the synthetic aperture image. The correction is applied to reduce distortions caused by the ambiguities in the SAR image.
Ranging, Detection And Resolving In A Multislope Frequency Modulated Waveform Radar System
View pageUS Patent:
51913372, Mar 2, 1993
Filed:
Feb 25, 1992
Appl. No.:
7/841133
Inventors:
Oleg Brovko - Los Angeles CA
Trung T. Nguyen - Huntington Beach CA
Trung T. Nguyen - Huntington Beach CA
Assignee:
Hughes Aircraft Company - Los Angeles CA
International Classification:
G01S 1353
G01S 13532
G01S 13532
US Classification:
342200
Abstract:
A maximum likelihood estimator and range-only-initialization target detection method employed to detect and resolve targets in a multislope linear frequency modulated waveform radar. The method resolves a large number of target returns without a large amount of signal processing and without creating a significant number of false alarms, or ghosts. The method simultaneously estimates range and doppler for each target. The method rejects undesired long-range targets that fold into target regions, and processes target regions of interest around a nearest target to reduce signal processing throughput requirements. Using a K out of N detection rule, the method detects targets that compete with mainlobe rain clutter, mainlobe ground clutter, and receiver leakage. The method simultaneously estimates target parameters and optimally resolves any number of targets. The method is limited only by the number of frequency modulation ranging slopes, the slope values, and the doppler filter resolution set by the radar waveform design.
Adaptive Signal Processor For Non-Stationary Environments And Method
View pageUS Patent:
57967792, Aug 18, 1998
Filed:
May 9, 1997
Appl. No.:
8/853545
Inventors:
Howard S. Nussbaum - Los Angeles CA
Oleg Brovko - Los Angeles CA
Douglas G. Dewolf - Los Angeles CA
Oleg Brovko - Los Angeles CA
Douglas G. Dewolf - Los Angeles CA
Assignee:
Raytheon Company - Lexington MA
International Classification:
H04B 702
US Classification:
375267
Abstract:
An adaptive signal processor (100) utilized with a receiving system (10) in a non-stationary environment having a receiver element (12) for receiving a composite signal comprised of a desire input signal and an interference signal. The invention includes a first mechanism (102) for modulating the composite signal to provide a plurality of modulated signals and to generate a plurality of synthetic channels (104). A second mechanism (126) is provided for calculating and applying a plurality of adaptive weight values to the modulated signals in the synthetic channels (104) to provide a plurality of time varying weighted signals. Finally, a third mechanism (128) is provided for combining the time varying weighted signals in the synthetic channels (104) to eliminate the interference signal from the composite signal. In a preferred embodiment, the composite signal is received by an antenna or hydrophone (12) and then digitized and stored in a memory (122). Stored digitized data is then modulated to provide modulated signals and a plurality of synthetic channels (104).
System And Method For Reconstruction Of Sparse Frequency Spectrum From Ambiguous Under-Sampled Time Domain Data
View pageUS Patent:
20140232581, Aug 21, 2014
Filed:
Feb 20, 2013
Appl. No.:
13/772217
Inventors:
- Waltham MA, US
Oleg Brovko - Los Angeles CA, US
Alison Kim - Palos Verdes Estates CA, US
Trung T. Nguyen - Huntington Beach CA, US
Oleg Brovko - Los Angeles CA, US
Alison Kim - Palos Verdes Estates CA, US
Trung T. Nguyen - Huntington Beach CA, US
Assignee:
RAYTHEON COMPANY - Waltham MA
International Classification:
H03M 1/12
US Classification:
341155
Abstract:
System and method for converting a high bandwidth analog signal to a digital signal including: receiving the high bandwidth analog signal; splitting the high bandwidth analog signal to M parallel channels; delaying the split signal in each channel with N*T delays, respectively; sampling each M delayed signals by M relatively prime sampling rate, wherein the sampling rate for each M delayed signal is smaller than the Nyquist frequency of the high bandwidth analog signal; upsampling each M sampled signal, wherein the upsampling rate for each M sampled signal satisfies the Nyquist frequency of the high bandwidth analog signal; combining the M up sampled signals into a combined signal; and reconstructing the combined signal to generate a digital signal representing the high bandwidth analog signal.