Patents Assigned to L-3 Communications Security and Detection Systems, Inc.
  • Publication number: 20190041511
    Abstract: 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: Application
    Filed: August 31, 2018
    Publication date: February 7, 2019
    Applicant: L-3 Communications Security and Detection Systems, Inc.
    Inventors: Christopher Gary Sentelle, Jeffery Carter May
  • Patent number: 10082572
    Abstract: 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: Grant
    Filed: August 31, 2017
    Date of Patent: September 25, 2018
    Assignee: 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
  • Patent number: 10067225
    Abstract: 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: Grant
    Filed: August 13, 2015
    Date of Patent: September 4, 2018
    Assignee: L-3 Communications Security and Detection Systems, Inc.
    Inventors: Christopher Gary Sentelle, Jeffery Carter May
  • Patent number: 9980697
    Abstract: 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: Grant
    Filed: December 28, 2015
    Date of Patent: May 29, 2018
    Assignee: L-3 Communications Security & Detection Systems, Inc.
    Inventor: Denis Dujmic
  • Patent number: 9915727
    Abstract: 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: Grant
    Filed: August 7, 2015
    Date of Patent: March 13, 2018
    Assignee: L-3 Communications Security and Detection Systems, Inc.
    Inventors: Victor V. Reznack, Herbert Duvoisin, III, Joe R. Jordan, III
  • Publication number: 20180003814
    Abstract: 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: Application
    Filed: August 31, 2017
    Publication date: January 4, 2018
    Applicant: 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
  • Patent number: 9753122
    Abstract: 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: Grant
    Filed: August 15, 2014
    Date of Patent: September 5, 2017
    Assignee: 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
  • Patent number: 9733353
    Abstract: 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: Grant
    Filed: January 16, 2015
    Date of Patent: August 15, 2017
    Assignee: L-3 Communications Security and Detection Systems, Inc.
    Inventors: Douglas O. Carlson, Herbert Duvoisin, III, Christopher Gary Sentelle
  • Patent number: 9348040
    Abstract: 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: Grant
    Filed: April 14, 2015
    Date of Patent: May 24, 2016
    Assignee: L-3 Communications Security and Detection Systems, Inc.
    Inventors: Ronald Steven McNabb, Jr., Nicholas Danvers Penrose Gillett
  • Patent number: 9316727
    Abstract: 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: Grant
    Filed: July 14, 2014
    Date of Patent: April 19, 2016
    Assignee: L-3 Communications Security and Detection Systems, Inc.
    Inventors: Christopher Gary Sentelle, Donald Charles Wright, Felix M. Fontan, Juan Antonio Torres-Rosario
  • Patent number: 9239303
    Abstract: 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 (ā€œZā€) of the contents, of an object without physical inspection of the interior of the object.
    Type: Grant
    Filed: August 30, 2012
    Date of Patent: January 19, 2016
    Assignee: L-3 Communications Security and Detection Systems, Inc.
    Inventors: Vitaliy Ziskin, David Perticone
  • Patent number: 9229102
    Abstract: 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: Grant
    Filed: August 8, 2013
    Date of Patent: January 5, 2016
    Assignee: L-3 Communications Security and Detection Systems, Inc.
    Inventors: Donald Charles Wright, Christopher Gary Sentelle, Jeffery Carter May, Rafik Hanna, Liviu Voicu
  • Publication number: 20150323476
    Abstract: 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: Application
    Filed: July 16, 2015
    Publication date: November 12, 2015
    Applicant: L-3 Communications Security and Detection Systems, Inc
    Inventor: Michael H. Schmitt
  • Publication number: 20150289828
    Abstract: 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: Application
    Filed: April 9, 2015
    Publication date: October 15, 2015
    Applicant: L-3 Communications Security and Detection Systems, Inc.
    Inventors: Andrew D. Foland, Michael H. Schmitt
  • Publication number: 20150285899
    Abstract: 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: Application
    Filed: August 15, 2014
    Publication date: October 8, 2015
    Applicant: 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
  • Publication number: 20150219775
    Abstract: 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: Application
    Filed: April 14, 2015
    Publication date: August 6, 2015
    Applicant: L-3 Communications Security and Detection Systems, Inc.
    Inventors: Ronald Steven McNabb, Jr., Nicholas Danvers Penrose Gillett
  • Patent number: 9091628
    Abstract: 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: Grant
    Filed: December 21, 2012
    Date of Patent: July 28, 2015
    Assignee: L-3 Communications Security and Detection Systems, Inc.
    Inventors: Kumsal Deniz Sezen, Stephen Bushnell-Fowler
  • Patent number: 9086366
    Abstract: 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: Grant
    Filed: February 13, 2013
    Date of Patent: July 21, 2015
    Assignee: L-3 Communications Security and Detection Systems, Inc.
    Inventor: Michael H. Schmitt
  • Patent number: D794797
    Type: Grant
    Filed: September 15, 2015
    Date of Patent: August 15, 2017
    Assignee: L-3 COMMUNICATIONS SECURITY AND DETECTION SYSTEMS, INC
    Inventors: Hiep Tran, Thomas Warnick, Sandra Hiltz, Michael Lanzaro, Gregory J. Tobin
  • Patent number: D829912
    Type: Grant
    Filed: July 13, 2017
    Date of Patent: October 2, 2018
    Assignee: L-3 COMMUNICATIONS SECURITY AND DETECTION SYSTEMS, INC
    Inventors: Hiep Tran, Thomas Warnick, Sandra Hiltz, Michael Lanzaro, Gregory Tobin