Patents Assigned to L-3 Communications Security and Detection Systems, Inc.
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Patent number: 10380727Abstract: Systems, methods, and non-transitory computer-readable media taught herein process a subset of a three-dimensional array of voxels to form an image of a region of interest in an object. Images thus formed are clear, comprehensible, and contextual. The systems, methods, and non-transitory computer-readable media taught herein select the subset of voxels that represent the region of interest along a direction perpendicular to a view direction defined by the region of interest. The subset of voxels represents one or more portions of a plurality of image slices of the object.Type: GrantFiled: August 18, 2016Date of Patent: August 13, 2019Assignee: L-3 Communications Security & Detection Systems, Inc.Inventors: Andrew D. Foland, Andrew David Smith, Justin L. Wright, Brian Joel Baker
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Publication number: 20190041511Abstract: Methods, systems, and apparatus for transmitting a first set of continuous wave (CW) signals, where each CW signal of the first set of CW signals has a first signal frequency and the transmitter is turned off between transmission of each CW signal of the first set of CW signals. For each CW signal of the first set of CW signals, receiving a reflection of the CW signal, and selecting an analog to digital (A/D) sample of the reflection of the CW signal that does not contain ground reflections by selecting the A/D sample based on timing from the transmitter being turned off after transmission of the CW signal. Integrating the selected A/D samples from each of the CW signals of the first set of CW signals to obtain a single A/D sample for the first set of CW signals.Type: ApplicationFiled: August 31, 2018Publication date: February 7, 2019Applicant: L-3 Communications Security and Detection Systems, Inc.Inventors: Christopher Gary Sentelle, Jeffery Carter May
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Patent number: 10082572Abstract: An apparatus includes an extendable wand, and a sensor head coupled to the wand. The sensor head includes a continuous wave metal detector (CWMD) and a radar. When the wand is collapsed, the wand and the sensor head collapse to fill a volume that is smaller than a volume filled by the sensor head and the wand when the wand is extended. Frequency-domain data from a sensor configured to sense a region is accessed, the frequency-domain data is transformed to generate a time-domain representation of the region, a first model is determined based on the accessed frequency-domain data, a second model is determined based on the generated time-domain representation, the second model being associated with a particular region within the sensed region, and a background model that represents a background of the region is determined based on the first model and the second model.Type: GrantFiled: August 31, 2017Date of Patent: September 25, 2018Assignee: L-3 Communications Security and Detection Systems, Inc.Inventors: Herbert Duvoisin, III, Juan Antonio Torres-Rosario, Christopher Gary Sentelle, Douglas O. Carlson, Glen A. Holman, Marquette Trishaun
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Patent number: 10067225Abstract: Methods, systems, and apparatus for transmitting a first set of continuous wave (CW) signals, where each CW signal of the first set of CW signals has a first signal frequency and the transmitter is turned off between transmission of each CW signal of the first set of CW signals. For each CW signal of the first set of CW signals, receiving a reflection of the CW signal, and selecting an analog to digital (A/D) sample of the reflection of the CW signal that does not contain ground reflections by selecting the A/D sample based on timing from the transmitter being turned off after transmission of the CW signal. Integrating the selected A/D samples from each of the CW signals of the first set of CW signals to obtain a single A/D sample for the first set of CW signals.Type: GrantFiled: August 13, 2015Date of Patent: September 4, 2018Assignee: L-3 Communications Security and Detection Systems, Inc.Inventors: Christopher Gary Sentelle, Jeffery Carter May
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Patent number: 9980697Abstract: Systems and methods presented herein provide corrections for fluctuations in dose or energy of radiation sources including x-ray radiation sources. The corrections can be applied to improve the quality of transmission radiography data or other radiation imagery or to facilitate feedback control of a radiation source to improve stability.Type: GrantFiled: December 28, 2015Date of Patent: May 29, 2018Assignee: L-3 Communications Security & Detection Systems, Inc.Inventor: Denis Dujmic
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Patent number: 9915727Abstract: Methods, systems, and apparatus for transmitting a first set of stepped-frequency CW signals having first signal parameters, where the first signal parameters includes a first bandwidth and a first step size between signal frequencies. Detecting reflections of the first set of transmitted CW signals. Identifying an indication of a potential target in a frequency range of the reflections of the first set of transmitted CW signals from the detected reflections of the first set of transmitted CW signals. Determining second signal parameters for a second set of stepped-frequency CW signals in response to identifying the indication of the potential target. The second signal parameters include a second bandwidth and a second step size between signal frequencies, and where the second signal parameters focus on the frequency range in which the indication of the potential target is identified. Transmitting the second set of CW signals.Type: GrantFiled: August 7, 2015Date of Patent: March 13, 2018Assignee: L-3 Communications Security and Detection Systems, Inc.Inventors: Victor V. Reznack, Herbert Duvoisin, III, Joe R. Jordan, III
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Publication number: 20180003814Abstract: An apparatus includes an extendable wand, and a sensor head coupled to the wand. The sensor head includes a continuous wave metal detector (CWMD) and a radar. When the wand is collapsed, the wand and the sensor head collapse to fill a volume that is smaller than a volume filled by the sensor head and the wand when the wand is extended. Frequency-domain data from a sensor configured to sense a region is accessed, the frequency-domain data is transformed to generate a time-domain representation of the region, a first model is determined based on the accessed frequency-domain data, a second model is determined based on the generated time-domain representation, the second model being associated with a particular region within the sensed region, and a background model that represents a background of the region is determined based on the first model and the second model.Type: ApplicationFiled: August 31, 2017Publication date: January 4, 2018Applicant: L-3 Communications Security and Detection Systems, Inc.Inventors: Herbert Duvoisin, III, Juan Antonio Torres-Rosario, Christopher Gary Sentelle, Douglas O. Carlson, Glen A. Holman, Marquette Trishaun
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Patent number: 9753122Abstract: An apparatus includes an extendable wand, and a sensor head coupled to the wand. The sensor head includes a continuous wave metal detector (CWMD) and a radar. When the wand is collapsed, the wand and the sensor head collapse to fill a volume that is smaller than a volume filled by the sensor head and the wand when the wand is extended. Frequency-domain data from a sensor configured to sense a region is accessed, the frequency-domain data is transformed to generate a time-domain representation of the region, a first model is determined based on the accessed frequency-domain data, a second model is determined based on the generated time-domain representation, the second model being associated with a particular region within the sensed region, and a background model that represents a background of the region is determined based on the first model and the second model.Type: GrantFiled: August 15, 2014Date of Patent: September 5, 2017Assignee: L-3 Communications Security and Detection Systems, Inc.Inventors: Herbert Duvoisin, III, Juan Antonio Torres-Rosario, Christopher Gary Sentelle, Douglas O. Carlson, Glen A. Holman, Marquette Trishaun
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Patent number: 9733353Abstract: An apparatus for detecting objects includes a transceiver configured to generate a radar signal, a radar having a transmit antenna configured to transmit the radar signal, and a receive antenna configured to sense a return signal in response to a transmission of the radar signal. The apparatus also includes a processor configured to detect an object based on the return signal. One or more of the transmit antenna or the receive antenna include offset spiral feed antennas.Type: GrantFiled: January 16, 2015Date of Patent: August 15, 2017Assignee: L-3 Communications Security and Detection Systems, Inc.Inventors: Douglas O. Carlson, Herbert Duvoisin, III, Christopher Gary Sentelle
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Patent number: 9348040Abstract: An imaging system exposes an object within a region to a beam of penetrating radiation. The beam of penetrating radiation is sensed on a side opposite the region from a source of the beam. An attenuation of the beam caused by passing the beam through the object is determined, the attenuation is compared to a threshold attenuation. If the attenuation exceeds the threshold attenuation, a parameter of the imaging system is adjusted based on the determined attenuation.Type: GrantFiled: April 14, 2015Date of Patent: May 24, 2016Assignee: L-3 Communications Security and Detection Systems, Inc.Inventors: Ronald Steven McNabb, Jr., Nicholas Danvers Penrose Gillett
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Patent number: 9316727Abstract: A stepped-frequency radar signal is transmitted through a barrier. A transmitter of the stepped-frequency radar is on a first side of the barrier, a first object is on a second side of the barrier, and a second object that is distinct from the first object is on the second side of the barrier. A signal including a reflection of the transmitted signal from the first object and a reflection of the transmitted signal from the second object is sensed. The sensed signal is analyzed to determine that a first detection is associated with the first object and a second detection is associated with a second object.Type: GrantFiled: July 14, 2014Date of Patent: April 19, 2016Assignee: L-3 Communications Security and Detection Systems, Inc.Inventors: Christopher Gary Sentelle, Donald Charles Wright, Felix M. Fontan, Juan Antonio Torres-Rosario
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Patent number: 9239303Abstract: This disclosure relates to systems and methods for material discrimination. The systems and methods include a single source that generates both neutrons and photons, and a single imaging array with a common detector that detects the neutrons and the photons generated from the single source. The systems and methods allow for a determination of the contents, and/or the effective atomic number (āZā) of the contents, of an object without physical inspection of the interior of the object.Type: GrantFiled: August 30, 2012Date of Patent: January 19, 2016Assignee: L-3 Communications Security and Detection Systems, Inc.Inventors: Vitaliy Ziskin, David Perticone
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Patent number: 9229102Abstract: Systems and methods for sensing targets on an opposite side of a wall are disclosed. In some aspects, the techniques include providing an indication to a user that portions of reflected radar signals were blocked by radiofrequency-blocking material at the wall. In some aspects, the techniques include identifying candidate targets as multipath echoes or motion-induced errors based on a correlation map.Type: GrantFiled: August 8, 2013Date of Patent: January 5, 2016Assignee: L-3 Communications Security and Detection Systems, Inc.Inventors: Donald Charles Wright, Christopher Gary Sentelle, Jeffery Carter May, Rafik Hanna, Liviu Voicu
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Publication number: 20150323476Abstract: Radiation is directed at an object, and radiation scattered by the object is sensed. An angular distribution of scatter in the sensed scattered radiation relative to a path of the radiation directed at the object is determined, and the angular distribution is evaluated. One or more atomic numbers, or effective atomic numbers, of materials composing the object is determined based on evaluating the angular distribution.Type: ApplicationFiled: July 16, 2015Publication date: November 12, 2015Applicant: L-3 Communications Security and Detection Systems, IncInventor: Michael H. Schmitt
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Publication number: 20150289828Abstract: Methods and apparatus for integrating a table with at least one X-ray source for medical imaging of patients. The apparatus comprises a table on which a patient may be placed, at least one X-ray source configured to generate X-rays at a plurality of X-ray source locations along a linear direction, wherein the at least one X-ray source is arranged to generate the X-rays such that at least some of the X-rays pass through a portion of the table in addition to passing through a portion of a patient placed on the table, and at least one detector array comprising a plurality of detector elements and arranged to detect the at least some of the X-rays passed through the portion of the patient placed on the table, wherein the at least one detector array comprises detector elements arranged in a two-dimensional configuration. Iterative reconstruction techniques may be used to reconstruct an image from X-ray data detected using the at least one detector.Type: ApplicationFiled: April 9, 2015Publication date: October 15, 2015Applicant: L-3 Communications Security and Detection Systems, Inc.Inventors: Andrew D. Foland, Michael H. Schmitt
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Publication number: 20150285899Abstract: An apparatus includes an extendable wand, and a sensor head coupled to the wand. The sensor head includes a continuous wave metal detector (CWMD) and a radar. When the wand is collapsed, the wand and the sensor head collapse to fill a volume that is smaller than a volume filled by the sensor head and the wand when the wand is extended. Frequency-domain data from a sensor configured to sense a region is accessed, the frequency-domain data is transformed to generate a time-domain representation of the region, a first model is determined based on the accessed frequency-domain data, a second model is determined based on the generated time-domain representation, the second model being associated with a particular region within the sensed region, and a background model that represents a background of the region is determined based on the first model and the second model.Type: ApplicationFiled: August 15, 2014Publication date: October 8, 2015Applicant: L-3 Communications Security and Detection Systems, Inc.Inventors: Herbert Duvoisin, III, Juan Antonio Torres-Rosario, Christopher Gary Sentelle, Douglas O. Carlson, Glen A. Holman, Marquette Trishaun
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Publication number: 20150219775Abstract: An imaging system exposes an object within a region to a beam of penetrating radiation. The beam of penetrating radiation is sensed on a side opposite the region from a source of the beam. An attenuation of the beam caused by passing the beam through the object is determined, the attenuation is compared to a threshold attenuation. If the attenuation exceeds the threshold attenuation, a parameter of the imaging system is adjusted based on the determined attenuation.Type: ApplicationFiled: April 14, 2015Publication date: August 6, 2015Applicant: L-3 Communications Security and Detection Systems, Inc.Inventors: Ronald Steven McNabb, Jr., Nicholas Danvers Penrose Gillett
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Patent number: 9091628Abstract: Methods, systems, and apparatuses, including computer programs encoded on a computer storage medium, for generating location and size measurements for small scattered objects in a large medium are disclosed.Type: GrantFiled: December 21, 2012Date of Patent: July 28, 2015Assignee: L-3 Communications Security and Detection Systems, Inc.Inventors: Kumsal Deniz Sezen, Stephen Bushnell-Fowler
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Patent number: D794797Type: GrantFiled: September 15, 2015Date of Patent: August 15, 2017Assignee: L-3 COMMUNICATIONS SECURITY AND DETECTION SYSTEMS, INCInventors: Hiep Tran, Thomas Warnick, Sandra Hiltz, Michael Lanzaro, Gregory J. Tobin
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Patent number: D829912Type: GrantFiled: July 13, 2017Date of Patent: October 2, 2018Assignee: L-3 COMMUNICATIONS SECURITY AND DETECTION SYSTEMS, INCInventors: Hiep Tran, Thomas Warnick, Sandra Hiltz, Michael Lanzaro, Gregory Tobin