31 results about "Sense and avoid" patented technology

The present invention is a Sense-And-Avoid Display System (SAVDS) that integrates airborne target position data from a ground-based radar with unmanned aerial vehicle (UAV) position data from the UAV ground control station (GCS). The UAV GCS receives the UAV position data from a global positioning system (GPS) element in the flight management autopilot system in the UAV. Using a high-resolution display, the SAVDS shows the GPS position of the UAV in relation to other radar-detected airborne targets operating in the same airspace. With the SAVDS co-located adjacent to the GCS computer controlling the UAV, the SAVDS instructs the UAV operator to change the heading and / or elevation of the UAV until any potential midair aircraft conflict is abated. The radar-detected airborne target data and the UAV GPS data are integrated and displayed with georeferenced background base maps that provide a visual method for tracking the UAV and for performing collision avoidance.

A trajectory-based sense-and-avoid system for use on an aircraft is provided that utilizes 4-D constructs, such as 4-D trajectories or 4-D polytopes, to maintain separation from other aircraft and / or to avoid collisions with other aircraft. In certain embodiments the trajectory-based sense-and-avoid system utilizes 4-D trajectories provided from an external source and / or 4-D trajectories estimated based on a variety of data sources during operation.

An apparatus carried by an unmanned vehicle to provide passive sensing and facilitate avoiding airborne aerial obstacles is provided. The apparatus can include at least one, but typically multiple optical systems installed, for example, in the nose of the aerial vehicle to passively sense and determine a range, direction, and velocity of the airborne obstacles to allow the aerial vehicle to avoid the airborne obstacles. The typical optical system includes at least one focal plane array or other imaging device configured to receive a wide field of view and at least one focal plane array or other imaging device configured to receive a steerable narrow field of view within the wide field of view to allow concentrated determination of the range, direction, and / or velocity of obstacles detected by the wide field of view imaging devices.

Systems and methods for navigating an unmanned aerial vehicle are provided. The method includes detecting a possible obstacle. The method includes determining a predicted path for the possible obstacle. The method includes determining that the possible obstacle will cause a collision with the unmanned aerial vehicle based on the predicted path. The method includes determining when the possible obstacle is cooperative. The method includes controlling the unmanned aerial vehicle to perform an avoidance maneuver when the possible obstacle is not cooperative. The method includes determining whether to initiate communications with the possible obstacle when the possible obstacle is cooperative.

An airborne radar device having a given angular coverage in elevation and in azimuth includes a transmit system, a receive system and processing means for carrying out target detection and location measurements. The transmit system includes: a transmit antenna made up of at least a first linear array of radiating elements focusing a transmit beam, said arrays being approximately parallel to one another; at least one waveform generator; means for amplifying the transmit signals produced by the waveform generator or generators; and means for controlling the transmit signals produced by the waveform generator or generators, said control means feeding each radiating element with a transmit signal. The radiating elements being controlled for simultaneously carrying out electronic scanning of the transmit beam in elevation and for colored transmission in elevation.

The invention provides six different display modes illustrating interaction and relative locations of two or more aerial vehicles (AVs), with at least one of the AVs being controllable by a ground-based or airborne-based controller of an unmanned aerial vehicle (UAV) or a pilot of a standard manned aircraft. Some display modes also indicate a predicted distance of closest approach of two AVs, the possibility of conflict or collision, and a remaining time, measured relative to the present time, before this conflict occurs. An audio and / or visual indicator advises the AV controller if this conflict event is likely to occur and recommends an acceleration or deceleration increment that may avoid such conflict.

The invention discloses a pressing tool system for long-strip-shaped workpiece machining. The system comprises pressing tool units. Each pressing tool unit comprises a pressing mechanism arranged on one side or two sides of a long-strip-shaped workpiece. Each pressing mechanism comprises a rotary device, a pressing arm and an ejecting mechanism, wherein the rotary device rotates in the horizontal direction, the pressing arm is arranged on the rotary device, one end of the pressing arm makes contact with the ejecting mechanism, the middle of the pressing arm is hinged to the upper end of the rotary device, the ejecting mechanism drives the pressing arm to rotate in the vertical direction by means of the lever principle, and the other end of the pressing arm presses the upper side of the workpiece. The whole pressing tool system for long-strip-shaped workpiece machining comprises the independent pressing tool units and is not limited by the length of the workpiece, cutters of a machining device continuous move, and the system is not hindered by pressing units. The pressing mechanisms can automatically sense and avoid the pressing units. The system and a method greatly improve machining efficiency, compared with traditional manual pressure application, labor intensity of workers is reduced, machining precision and machining quality of products are improved, production cost is reduced, and the system and method are suitable for large-scale application and popularization.

The invention provides a visual servo-based sense-and-avoid system. The visual servo-based sense-and-avoid system includes an unmanned aerial vehicle, an image acquisition system, a visual servo control system and a navigation positioning system; the visual servo system includes a visual target detection and tracking module, a security envelope module and a visual servo controller. The invention also provides a visual servo-based sense-and-avoid method. With the visual servo-based sense-and-avoid method and system of the invention adopted, rapid sensing for surrounding airspace environment can be realized; avoidance maneuvering for space flight targets can be completed independently and autonomously without intervention and operation of ground operation personnel required under a situation that no distance measuring sensor is installed. The visual servo-based sense-and-avoid method and system of the invention have the advantages of low load requirements, high control precision and high intelligence, and can improve the airspace flight safety capacity of the unmanned aerial vehicle.