66 results about "3d terrain" patented technology

Disclosed herein is a three-dimensional (3D) digital map system for implementing a navigation and ground collision preventing method using 3D terrain information. The 3D digital map system includes a terrain referenced navigation module configured to receive data from EGI (Embedded GPS / INS), a radio-altimeter (RALT) and a map database, corrects the data to perform accurate navigation computation, and outputs the corrected data, a collision avoidance warning module configured to generate a warning against collision of an aircraft with the ground or an obstacle using the corrected data, a 3D terrain database and an obstacle database, a terrain following module configured to generate a terrain following trajectory of the aircraft using the same information, and a Passive Ranging module configured to receive the 3D terrain database and line-of-sight (LOS) information of a target and calculate distance and position information of the target located on the ground.

A system for visualization of 3D objects and / or 3D terrain includes a processor, a display in communication with the processor, and a range metering device in communication with the processor. The system visualizes the 3D objects and / or the 3D terrain based upon their respective distances from the mobile device and based upon a respective parameter measuring the detail of the 3D object and / or the 3D terrain.

The invention provides a method for generating three-dimensional terrain and radar terrain based on S-57 electronic chart data. First, based on the S-57 electronic chart data and GDEM data, an electronic chart-based elevation vector diagram is generated as a unified data source; Secondly, the elevation vector map is transformed, simplified and textured to generate a 3D terrain model of the scene; finally, on the basis of the elevation vector image, by cutting the data, the radar terrain data is generated and completed at different sampling intervals as needed. Extraction of water depth data and navigation target data. The invention overcomes the deficiencies of inconsistent data matching, low precision and poor operation efficiency of the existing terrain model data; integrates the three-dimensional terrain data generation technology, the GPS positioning technology and the GIS geographic information technology, while ensuring the operation efficiency and fidelity of the three-dimensional visual scene, Accurate matching of visual 3D terrain data, radar terrain, water depth data and navigation object data with electronic charts is realized.

A method, apparatus, media and signals for generating a computer representation of a three-dimensional swept envelope of a vehicle having a wheeled chassis operable to support a vehicle body for movement along a terrain is disclosed. The method involves receiving terrain data representing a 3D terrain, receiving data defining parameters of the vehicle, and receiving data defining a path for movement of the vehicle from an initial position on the terrain to a displaced position on the terrain. The method also involves disposing a computer representation of the vehicle on the 3D representation of the terrain at successive locations along the path using the parameters. Disposing involves determining points of engagement between wheels of the wheeled chassis and the 3D representation of the terrain to dispose the chassis with respect to the terrain, and determining a corresponding 3D location of the vehicle body with respect to the terrain. The method further involves generating a plurality of spatial extents of the vehicle at the successive locations, the spatial extents defining the 3D swept envelope of the vehicle when moving between the initial position and the displaced position. In another aspect a method for generating a computer representation of a three-dimensional swept envelope of an object moving along a guideway disposed with respect to a 3D representation of a terrain is disclosed.