Air traffic control assistance system, air traffic control assistance method, and storage medium

An air traffic control assistance method, the method comprising:

• determining, by a processor, as a set of interval information between passing points of a moving object expressed by a set of three-dimensional coordinates using, as coordinate values, an x coordinate and a y coordinate of a passing point determined as a position where the moving object passes and passing time of the moving object, a set of interval information of an aircraft of interest when the state of the aircraft of interest as a moving object as a target of a state change by an avoidance proposal for a near miss between moving objects is changed based on the avoidance proposal and interval information of an aircraft in vicinity as one of the moving objects other than the aircraft of interest, and specifying a figure expressing a predetermined range defined by the aircraft in vicinity in a plane including a three-dimensional vector expressed by the interval information of the aircraft of interest and perpendicular to an xy plane for each of sets of the interval information of the aircraft of interest and the interval information of the aircraft in vicinity;
• calculating, by the processor, for each two-dimensional vector, a transformation matrix expressing a transformation from a plane including the two-dimensional vector and perpendicular to the xy plane to a plane defined an x axis and a time axis when transforming two-dimensional vectors in the xy plane extending from a passing point of the aircraft of interest toward a next passing point so as to be arranged in order along the x axis;
• applying, by the processor, to the specified figure, the transformation matrix corresponding to the interval information of the aircraft of interest used to specify the figure, thereby transforming the figure to the plane defined by the x axis and the time axis, and displaying a line connecting points each determined by a passing point and time when the aircraft of interest passes through the passing point and the transformed figure together with the x axis and the time axis;
• determining, by the processor, when a list of avoidance proposals for the near miss between the moving objects is inputted, a set of the interval information of the aircraft of interest and the interval information of an aircraft in vicinity for each of aircrafts of interest corresponding to each of the avoidance proposals, and figures expressing the predetermined range defined by each of a plurality of aircrafts in vicinity for each determined set of the interval information are specified;
• calculating, by the processor, transformation matrices for each of the aircrafts of interest corresponding to each of the avoidance proposals;
• and
• by applying the transformation matrices corresponding to the interval information of the aircrafts of interest used to specify figures to the figures specified by the figure specifying unit for each of the aircrafts of interest corresponding to each of the avoidance proposals, transforming, by the processor, the figures to the plane defined by the x axis and the time axis and displays the list of the avoidance proposals while varying display modes of the avoidance proposals in accordance with a number of the figures existing in the predetermined range in the plane.

A non-transitory readable storage medium containing instructions, that when executed by a processor, cause the processor to execute a method, the method comprising:

• determining, as a set of interval information between passing points of a moving object expressed by a set of three-dimensional coordinates using, as coordinate values, an x coordinate and a y coordinate of a passing point determined as a position where the moving object passes and passing time of the moving object, a set of interval information of an aircraft of interest as one of moving objects when the state of the aircraft of interest as a moving object as a target of a state change by an avoidance proposal for a near miss between the moving objects is changed based on the avoidance proposal and interval information of an aircraft in vicinity as one of the moving objects other than the aircraft of interest, and specifies a figure expressing a predetermined range defined by the aircraft in vicinity in a plane including a three-dimensional vector expressed by the interval information of the aircraft of interest and perpendicular to an xy plane for each of sets of the interval information of the aircraft of interest and the interval information of the aircraft in vicinity;
• calculating, for each two-dimensional vector, a transformation matrix expressing a transformation from a plane including the two-dimensional vector and perpendicular to the xy plane to a plane defined by an x axis and a time axis when transforming two-dimensional vectors in the xy plane extending from a passing point of the aircraft of interest toward a next passing point so as to be arranged in order along the x axis;
• applying, to the figure specified by the figure specifying process, the transformation matrix corresponding to the interval information of the aircraft of interest used to specify the figure, transforms the figure to the plane defined by the x axis and the time axis, and displays a line connecting points each determined by a passing point and time when the aircraft of interest passes through the passing point and the transformed figure together with the x axis and the time axis;
• determining when a list of avoidance proposals for the near miss between the moving objects is inputted, a set of the interval information of the aircraft of interest and the interval information of an aircraft in vicinity for each of aircrafts of interest corresponding to each of the avoidance proposals, and figures expressing the predetermined range defined by each of a plurality of aircrafts in vicinity for each determined set of the interval information are specified;
• calculating transformation matrices for each of the aircrafts of interest corresponding to each of the avoidance proposals;
• and
• by applying the transformation matrices corresponding to the interval information of the aircrafts of interest used to specify figures to the figures specified by the figure specifying unit for each of the aircrafts of interest corresponding to each of the avoidance proposals, transforming the figures to the plane defined by the x axis and the time axis and displays the list of the avoidance proposals while varying display modes of the avoidance proposals in accordance with a number of the figures existing in the predetermined range in the plane.