Patents by Inventor Atindra K. Mitra

Atindra K. Mitra 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).

  • Patent number: 7653464
    Abstract: A hybrid air-ground vehicle design that cycles through a regenerative energy phase during a ground-based trajectory. The regenerative ground-based trajectory, in turn, produces energy for purposes of implementing another air-based trajectory cycle. The design significantly improves the versatility and endurance of robotic position-adaptive sensor designs. The radar (or electro-optic) sensors on the platform perform surveillance operations during both the ground and air trajectories of the hybrid air/ground vehicle.
    Type: Grant
    Filed: April 4, 2006
    Date of Patent: January 26, 2010
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventor: Atindra K. Mitra
  • Patent number: 7504984
    Abstract: A system for locating earth cavities, or items in a building, or structural characteristics having a plurality of transmitters that generate at least a portion of a waveform. Each transmitter divides the waveform into sub-chirp intervals and transmits a known sub-chirp interval from a known location to contact an article of interest. The resulting sub-chirp intervals become a leakage signal that is then received and processed by a receiver. The receiver therein approximates a cavity size, article size, article composition, article location, earth cavity location, or other structural characteristic.
    Type: Grant
    Filed: May 15, 2007
    Date of Patent: March 17, 2009
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventor: Atindra K. Mitra
  • Patent number: 7068210
    Abstract: A position-adaptive radar method and device for small UAV platforms capable of detecting “leakage signals” that, for example, propagate between two buildings or “leak through” penetrable surfaces such as walls or layers of the ground. The position-adaptive radar comprises a monostatic radar receiver that measures and processes leakage signals and then “self adapts” in position to establish line-of-sight between a mini-UAV platform and an obscuration channel that propagates the leakage signal. This allows a mini-UAV platform to process signals in real-time while gathering intelligence information and locating objects-of-interest that may be embedded within an obscuration channel.
    Type: Grant
    Filed: February 25, 2005
    Date of Patent: June 27, 2006
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: Atindra K. Mitra, Krishna Pasala
  • Patent number: 7068226
    Abstract: A method and device of energizing a plasma antenna using power from the discharge of an electopropulsion engine and comprising a propellant and feed system, a capacitor charging power processing unit and an energy storage capacitor, wherein said energy is released over an electrode gap and resultant ablation products are ionized and accelerated by an electromagnetic force, thereby producing a pulse.
    Type: Grant
    Filed: March 29, 2004
    Date of Patent: June 27, 2006
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventor: Atindra K. Mitra