Patents Assigned to Sigma Space Corp.
  • Publication number: 20160253604
    Abstract: The present invention is directed to a self consistent system for generation and adaptive implementation of overflying multi sensor measurements and derivation of actionable aggregants pertinent to determination of status and proactive management models of distributed resource. The system includes at least one set of calibrated overflying multisensor detectors arranged for detecting signals from electromagnetic radiation redirected by a plurality of underlying structures having a combination of features having variable scale lengths.
    Type: Application
    Filed: April 27, 2016
    Publication date: September 1, 2016
    Applicant: Sigma Space Corp.
    Inventors: John James Degnan, Jacobo Marcos Sirota, Katheleen Marie Fitzsimmons, Cristopher Treadwell Field, Miodrag Cekic
  • Patent number: 9349148
    Abstract: The present invention is directed to a self consistent method for adaptive implementation of overflying multi sensor measurements and derivation of conclusions and determinations “agregants”, derived and/or developed from the measured results and/or resulting from science-based processing design to integrate and process the measured results and other data and scientific knowledge. Furthermore, the aggregants may be pertinent to determination of status and proactive management models of the at least one distributed resource by a single or repeatable implementation of one or several steps.
    Type: Grant
    Filed: July 17, 2013
    Date of Patent: May 24, 2016
    Assignee: Sigma Space Corp.
    Inventors: Jacobo Marcos Sirota, Thomas Joseph Bouchard, Miodrag Cekic, Cristopher Treadwell Field
  • Patent number: 8493445
    Abstract: An optical scanner system for contiguous three-dimensional topographic or volumetric imaging of a surface from an aircraft or spacecraft is disclosed. A servo controller synchronizes the rotation rates of a pair of wedge scanners with high precision to the multi-kilohertz laser fire rate producing an infinite variety of well-controlled scan patterns. This causes the beam pattern to be laid down in precisely the same way on each scan cycle, eliminating the need to record the orientations of the wedges accurately on every laser fire, thereby reducing ancillary data storage or transmission requirements by two to three orders of magnitude and greatly simplifying data preprocessing and analysis. The described system also uses a holographic element to split the laser beam into an array that is then scanned in an arbitrary pattern.
    Type: Grant
    Filed: March 8, 2007
    Date of Patent: July 23, 2013
    Assignee: Sigma Space Corp
    Inventors: John James Degnan, III, David Nelson Wells
  • Patent number: 8115925
    Abstract: A polarization switching lidar device, arranged for remote detection and characterization of airborne aggregations of particulates, includes a pulsed laser, a mirror, a polarizing beam splitter, an actively controlled retarder arranged to be controllably alternated between a zero retardation state and a quarter-wave retardation state such that the transmitted portion of the exiting laser light beam is linearly polarized in a predetermined direction when the actively controlled retarder is in the zero retardation state, while being circularly polarized in a predetermined rotational sense when the actively controlled retarder is in the quarter-wave retardation state. A directable telescoping assembly is arranged to collect photons backscattered by the airborne aggregations of particulates and to redirect the collected portion of depolarized backscattered photons onto the polarizing beam splitter.
    Type: Grant
    Filed: September 21, 2011
    Date of Patent: February 14, 2012
    Assignee: Sigma Space Corp.
    Inventors: Savyasachee Liptarag Mathur, Yunhui Zheng, Edward Lee Leventhal
  • Patent number: 8054464
    Abstract: A polarization switching lidar device is arranged for remote detection and characterization of airborne aggregations of particulates. It includes a pulsed laser, a mirror, a polarizing beam splitter, an actively controlled retarder arranged to be controllably alternated between a zero retardation state and a quarter-wave retardation state such that the transmitted portion of the exiting laser light beam is linearly polarized in a predetermined direction when the actively controlled retarder is in the zero retardation state, while being circularly polarized in a predetermined rotational sense when the actively controlled retarder is in the quarter-wave retardation state. A directable telescoping assembly is arranged to collect photons backscattered by the airborne aggregations of particulates and to redirect the collected portion of depolarized backscattered photons onto the polarizing beam splitter.
    Type: Grant
    Filed: January 25, 2010
    Date of Patent: November 8, 2011
    Assignee: Sigma Space Corp.
    Inventors: Savyasachee Liptarag Mathur, Yunhui Zheng, Edward Lee Leventhal