Patents by Inventor Marc Harlacher
Marc Harlacher has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 9304184Abstract: A method for increasing accuracy of geolocation based on timing measurements of RF signals. The method includes: (a) receiving at a user one or more RF signals transmitted over time, (b) correlating the received signals with a plurality of replica waveforms, (c) creating a first set of estimates of the time or arrivals of the signals at the user, (d) using the first set of estimates to create a plurality of models, wherein each model assumes that some of the measurements are affected by multipath or interference, (e) testing the models to estimate the likelihood of timing measurements for each model, and (f) determining the set of LOS measurements as one associated with a model having the largest likelihood.Type: GrantFiled: February 22, 2013Date of Patent: April 5, 2016Assignee: The Boeing CompanyInventors: Alexandr Draganov, Franklin M. Haas, Jr., Marc A. Harlacher
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Patent number: 8406280Abstract: A system and method for mitigating multipath interference of signals in environments to determine the line of sight signal propagation.Type: GrantFiled: March 18, 2009Date of Patent: March 26, 2013Assignee: Argon ST, Inc.Inventors: Alexandr Draganov, Franklin M. Haas, Jr., Marc A. Harlacher
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Publication number: 20130051434Abstract: A system and method for mitigating multipath interference of signals in environments to determine the line of sight signal propagation.Type: ApplicationFiled: March 18, 2009Publication date: February 28, 2013Applicant: Argon ST, Inc.Inventors: Alexandr Draganov, Franklin M. Haas, JR., Marc A. Harlacher
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Patent number: 7260141Abstract: A transceiver employing a steerable phased-array antenna includes a modem architecture in which signals from each antenna element in the array are independently processed down to the individual baseband channel level, and digital beamforming is performed at baseband. The data rate reduction from IF to baseband permits parallel signal data from multiple antenna elements to be time multiplexed and serially processed at acceptable data rates at baseband with minimal modem hardware requirements. Both for transmit signal modulation and received signal demodulation, the computation of carrier tracking, automatic gain control (AGC)/power-control, and beamforming are shared by the same processing circuitry for all channels when performed at baseband. The resulting baseband circuitry is only incrementally larger than that required for carrier tracking and AGC alone, yet accomplishes independent beamforming for each antenna element on each user channel.Type: GrantFiled: February 28, 2002Date of Patent: August 21, 2007Assignee: ITT Manufacturing Enterprises, Inc.Inventors: Scott Bierly, Marc Harlacher, Robert Smarrelli, Aaron Weinberg
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Patent number: 7184272Abstract: A miniature, multimode, modular RF terminal includes a plurality of processing modules, where at least one of the processing modules includes an external connector for conveying an input or output RF signal. The terminal further includes a segmented coaxial analog bus comprising a plurality of multi-conductor coaxial connectors, wherein each of the multi-conductor coaxial connectors is integrated in or forms a portion of one of the processing modules, and wherein the segmented coaxial analog bus conveys RF signals between the processing module having the external connector and at least one other processing module. The modules of the terminal can be arranged in a stack, on a rigid substrate, connected via a flexible substrate or combinations thereof. The terminal supports processing of communication, navigation and sensor signals.Type: GrantFiled: April 7, 2003Date of Patent: February 27, 2007Assignee: ITT Manufacturing Enterprises, Inc.Inventors: Marc A. Harlacher, Kenneth D. Cunningham
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Publication number: 20020154687Abstract: A transceiver employing a steerable phased-array antenna includes a modem architecture in which signals from each antenna element in the array are independently processed down to the individual baseband channel level, and digital beamforming is performed at baseband. The data rate reduction from IF to baseband permits parallel signal data from multiple antenna elements to be time multiplexed and serially processed at acceptable data rates at baseband with minimal modem hardware requirements. Both for transmit signal modulation and received signal demodulation, the computation of carrier tracking, automatic gain control (AGC)/power-control, and beamforming are shared by the same processing circuitry for all channels when performed at baseband. The resulting baseband circuitry is only incrementally larger than that required for carrier tracking and AGC alone, yet accomplishes independent beamforming for each antenna element on each user channel.Type: ApplicationFiled: February 28, 2002Publication date: October 24, 2002Inventors: Scott Bierly, Marc Harlacher, Robert Smarrelli, Aaron Weinberg
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Patent number: 6448926Abstract: A communications system operating in one or more frequency bands of various number of channels per band (for a total of N channels), and a novel transceiver for receiving these multiple bands of signals. The transceiver comprises an antenna and RF front end for each said band, a separate RF to IF downconverter for each said band. The IF for each band is centered at a succession of frequencies Fo such that the spectra for each band are non-overlapping, with the center frequencies. Analog-to-digital converter sampling rate is chosen such that one band is centered at baseband, and one or more other bands are centered at a specific relationship with the sampling rate such that each band is individually downconverted to baseband by appropriate selection of tap weight multiplying sequences (such as alternating +/− sequence for the case of Fo equal to one-fourth the sampling rate). An analog-to-digital converter converts analog signals to digital signals from the combiner.Type: GrantFiled: August 23, 1999Date of Patent: September 10, 2002Assignee: ITT Manufacturing Enterprises, Inc.Inventors: Aaron Weinberg, Marc Harlacher, Scott Bierly, Kenneth Cunningham, Daniel Urban
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Patent number: 6421372Abstract: A parallel digital matched filter is constructed which performs numerous simultaneous correlations of a received spread spectrum signal against various replica offsets of its spreading sequence. This allows for the rapid acquisition of the received signal code phase, and subsequent handoff to tracking for a multi-channel receiver. A novel matched filter computational architecture is utilized, in which common digital arithmetic elements are used for both acquisition and tracking purposes. As each channel is sequentially acquired by the parallel matched filter, a subset of the arithmetic elements are then dedicated to the subsequent tracking of that channel. This process is repeated, with the remaining available arithmetic elements accelerating the acquisition of the next channel, and so on, until all resources are allocated as tracking channels. Additionally, multiple data inputs and delay lines are present in this architecture, and are available for processing at each arithmetic element.Type: GrantFiled: November 8, 2000Date of Patent: July 16, 2002Assignee: ITT Manufacturing Enterprises, Inc.Inventors: Scott Bierly, Marc Harlacher, Aaron Weinberg
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Patent number: 6370182Abstract: A spread-spectrum demodulator architecture is presented which utilizes parallel processing to accomplish rapid signal acquisition with simultaneous tracking of multiple channels, while implementing an integrated multi-element adaptive beamformer, Rake combiner, and multi-user detector (MUD). A matched filter computational architecture is utilized, in which common digital arithmetic elements are used for both acquisition and tracking purposes. As each channel is sequentially acquired by the parallel matched filter, a subset of the arithmetic elements are then dedicated to the subsequent tracking of that channel. Additionally, multiple data inputs and delay lines are present, connecting the sampled baseband data streams of numerous RF bands and antenna elements with the arithmetic elements. The matched filter/despreader processing is virtually independent of channel origin or utilization; e.g., CDMA users, RF bands, beamformer elements, or Rake Fingers.Type: GrantFiled: February 8, 2001Date of Patent: April 9, 2002Assignee: ITT Manufacturing Enterprises, Inc.Inventors: Scott Bierly, Marc Harlacher, Robert Smarrelli, Aaron Weinberg
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Publication number: 20010028675Abstract: A spread-spectrum demodulator architecture is presented which utilizes parallel processing to accomplish rapid signal acquisition with simultaneous tracking of multiple channels, while implementing an integrated multi-element adaptive beamformer, Rake combiner, and multi-user detector (MUD). A matched filter computational architecture is utilized, in which common digital arithmetic elements are used for both acquisition and tracking purposes. As each channel is sequentially acquired by the parallel matched filter, a subset of the arithmetic elements are then dedicated to the subsequent tracking of that channel. Additionally, multiple data inputs and delay lines are present, connecting the sampled baseband data streams of numerous RF bands and antenna elements with the arithmetic elements. The matched filter/despreader processing is virtually independent of channel origin or utilization; e.g., CDMA users, RF bands, beamformer elements, or Rake Fingers.Type: ApplicationFiled: February 8, 2001Publication date: October 11, 2001Inventors: Scott Bierly, Marc Harlacher, Robert Smarrelli, Aaron Weinberg