Abstract: According to one aspect, it becomes possible to easily modify a 3D object which is displayed in a virtual reality space. A method is performed by a computer configured to be communicable with a position detection device that includes a drawing surface and that, in operation, detects a position of an electronic pen on the drawing surface. The method includes rendering, in a virtual reality space, a first object that is a 3D object, rendering, near the first object, a display surface that is a 3D object, rendering, on the display surface, a 3D line that is a 3D object generated based on the position of the electronic pen on the drawing surface, wherein the position of the electronic pen is detected by the position detection device, and outputting the first object, the display surface, and the 3D line, which are the 3D objects, to a display.

Abstract: According to one aspect, it becomes possible to easily modify a 3D object which is displayed in a virtual reality space. A method is performed by a computer configured to be communicable with a position detection device that includes a drawing surface and that, in operation, detects a position of an electronic pen on the drawing surface. The method includes rendering, in a virtual reality space, a first object that is a 3D object, rendering, near the first object, a display surface that is a 3D object, rendering, on the display surface, a 3D line that is a 3D object generated based on the position of the electronic pen on the drawing surface, wherein the position of the electronic pen is detected by the position detection device, and outputting the first object, the display surface, and the 3D line, which are the 3D objects, to a display.

Abstract: The method for identification of a set of satellites, arranged on GEO orbit, consists of receiving satellite signals; determining antenna beams strength; detecting beams that are local maximums according to the antenna structure, defined by the number of beams and their coordinates in the antenna plane; and approximating the GEO orbit using the strength of the received signals, wherein the satellites' identification is carried out through the local maximums situated on or in a defined range of the approximated GEO curve, according to the information for the geographic position of each satellite and the antenna orientation. Projection probability coefficients of a given satellite in a given area of the antenna plane are used for satellites' identifications. The information about the geographic position of each satellite may be corrected by azimuth, elevation and roll angles, according to the inaccuracy of the antenna installation.