Patent ID: 9159243
Filing Date: 2015-10-13
Classification: G08G

Abstract:
1. A control assistance device comprising: a flight information acquirer for acquiring flight information containing information indicating flight plans and positions of flight routes of each craft that is a target of control, in a controlled airspace; a conflict detector for detecting, for a set altitude that is an altitude set in the flight information of a flight search target craft that is a one of the craft that is the target of control and is a target of route searching and at least one navigable altitude within the controlled airspace other than the set altitude, ranges in which a conflict occurs between the route search target craft and each of the other control-target craft and generating conflict range information indicating the ranges in which the conflicts occur at each altitude, when the route search target craft has flown on the flight path set in the flight plan maintaining the respective altitudes, based on the flight information; a first position detector for detecting a first position that is a position farthest from the entry position into the controlled airspace navigable until occurrence of the conflict and generating first position information indicating the first position, when the route search target craft has flown on the flight path maintaining the set altitude, based on the flight information and the conflict range information; a second position detector for detecting a second position that is a position closest to the entry position where separation is possible from the controlled airspace without occurrence of the conflict after the position at which a change was made from the set altitude to the navigable altitude, and generating second position information indicating the second position for each of the navigable altitudes, when the route search target craft has flown the flight path while maintaining the respective altitudes for each of the navigable altitudes that are targets of the conflict detection other than the set altitude, based on the flight information and the conflict range information; and an altitude change range detector for generating altitude change range information that makes the second position the start position and the first position the end position when the second position at the navigable altitude is closer to the entry position than the first position, for each navigable altitude that is the target of second position detection, based on the conflict information, the first position information and the second position information, and generating altitude change range information for each navigable altitude when the conflict range exists in the altitude change range at altitudes between the set altitude and the navigable altitudes, excluding the conflict range from the altitude change range.