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Recent Submissions

  • Method and system for robust symmetrical number system photonic direction finding 

    Pace, Phillip E.; Tedesso, Thomas W.; Calusdian, James (The United States of America as represented by the Secretary of the Navy, Washington, DC (US), 2017-03-07);
    A four-element wideband photonic DF system with robust symmetrical number system preprocessing utilizes dual electrode Mach-Zehnder modulators (DE-MZMs) to conduct phase detection for direct wideband direction finding (DF) ...
  • Method and apparatus for computer vision analysis of cannon-launched artillery video 

    Yakimenko, Oleg A.; Kolsch, Mathias N.; Decker, Ryan J. (The United States of America as represented by the Secretary of the Navy, Washington, DC (US), 2017-02-07);
    An automated method to quantify the pitching and yawing motion of a projectile during ballistic flight using two camera/tracker video systems. Image processing tools are used to segment the shape of the projectile in ...
  • Method and apparatus for singularity avoidance for control moment gyroscope (CMG) systems without using null motion 

    Agrawal, Brij N.; Kim, Jae Jun; Sands, Timothy Andrew (The United States of America as represented by the Secretary of the Navy, Washington, DC (US), 2017-02-14);
    A method is described for avoiding gyrocopic singularities during attitude correction to a sytem, such as a spacecraft having a CMG array. The method receives a corrective torque vector µ and gimbal angle values δ for ...
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