MOVEMENT-MEASUREMENT-PROCESSING SYSTEM, MOVEMENT-MEASUREMENT-PROCESSING METHOD, AND MOVEMENT-MEASUREMENT-PROCESSING PROGRAM

• US 20150073690A1
• Filed: 05/20/2013
• Published: 03/12/2015
• Est. Priority Date: 06/13/2012
• Status: Active Grant

• Current Assignee: NEC Corporation
• Original Assignee: NEC Corporation
• Inventors: Kida, Koji, Tagato, Hiroki, Ando, Tomohito, Teramoto, Sachio
• Granted Patent: US 9,530,317 B2
• Time in Patent Office: Days
• US Class Current: 701/120
• CPC Class Codes: B64F 1/002 Taxiing aids
• CPC Class Codes: G08G 5/0017 Arrangements for implementing traffic-related aircraft activities, e.g. arrangements for generating, displaying, acquiring or managing traffic information head-up displays G02B27/01; ground or aircraft-carrier-deck-installations B64F
• CPC Class Codes: G08G 5/0043 Traffic management of multiple aircrafts from the ground G08G5/003 takes precedence; data processing specially designed for resource management, e.g. scheduling or allocating time, human or machine resources G06Q10/06
• CPC Class Codes: G08G 5/045 Navigation or guidance aids, e.g. determination of anti-collision manoeuvers radar or analogous systems specially adapted for anti-collision between aircraft G01S13/933

Abstract

There is provided a movement-measurement-processing system capable of quickly specifying a peripheral aircraft which can abnormally near to an aircraft of interest. A peripheral aircraft selection means 74 maps a region in a 3D space defined by a start point of period information of the aircraft of interest, a point having the coordinate values of passage position coordinates at an end point of the period information and a lower limit arrival time, and a point having the coordinate values of passage position coordinates at the end point of the period information and an upper limit arrival time onto a 2D plane by use of a first projection matrix. The peripheral aircraft selection means 74 then selects a peripheral aircraft which can abnormally near to the aircraft of interest by determining how the resultant region crosses with a circle whose center is a passage position of the peripheral aircraft and whose radius is a determination standard threshold as to whether abnormal nearing will occur.

Claims

1. A movement-measurement-processing system comprising:

a period information creation unit for creating a set of period information each having a 3D coordinate with the coordinate values of 2D coordinates of a passage position of a moving body and its passage time as information on a start point and an end point from a movement plan of an aircraft of interest which is a moving body for which the movement plan is to be adjusted and a movement plan of each peripheral aircraft which is a moving body other than the aircraft of interest;

an arrival time calculation unit for calculating a lower limit arrival time which is an end point arrival time when the aircraft of interest moves at an upper limit speed and an upper limit arrival time which is an end point arrival time when it moves at a lower limit speed for each item of period information of the aircraft of interest;

a projection matrix calculation unit for calculating a first projection matrix indicating mapping from a 3D space onto a 2D plane based on a period information pair having one item of period information of the aircraft of interest and one item of period information of a peripheral aircraft; and

a peripheral aircraft selection unit for selecting a peripheral aircraft which can abnormally near to the aircraft of interest by determining how a region obtained by mapping a region in a 3D space defined by a start point of period information of the aircraft of interest, a point having the coordinate values of passage position coordinates at an end point of the period information and a lower limit arrival time, and a point having the coordinate values of the passage position coordinates at the end point of the period information and an upper limit arrival time into a 2D plane by use of the first projection matrix crosses with a circle whose center is a passage position of the peripheral aircraft and whose radius is a determination standard threshold as to whether abnormal nearing will occur.

2. The movement-measurement-processing system according to claim 1,

wherein the projection matrix calculation unit calculates a second projection matrix indicating mapping from a 2D plane into a 3D space based on a period information pair, and

the movement-measurement-processing system further comprising:

an avoidance speed derivation unit for defining a line segment by mapping period information of the aircraft of interest paired with period information of a peripheral aircraft which can abnormally near to the aircraft of interest onto a 2D plane by use of a first projection matrix, when the line segment crosses with a circle whose center is a passage position of the peripheral aircraft which can abnormally near to the aircraft of interest and whose radius is the threshold, calculating coordinates of points of contact between tangent lines of the circle passing through the start point of the line segment and the circle, mapping the coordinates of the points of contact to points in a 3D space by use of the second projection matrix, and calculating period information of the aircraft of interest corresponding to a changed speed and the changed speed based on the coordinates of the points in a repeated manner, thereby finding an avoidance speed for avoiding abnormal nearing between the aircraft of interest and each peripheral aircraft determined as being able to abnormally near thereto.

3. The movement-measurement-processing system according to claim 2,

wherein the period information creation unit divides period information of the aircraft of interest into two items of period information across an externally designated point.

4. The movement-measurement-processing system according to claim 2,

wherein the peripheral aircraft selection unit specifies a peripheral aircraft with the earliest abnormal nearing time to the aircraft of interest, and

the movement-measurement-processing system further comprising:

a period information division unit for calculating a speed change point in a period indicated by period information of the aircraft of interest paired with period information of the peripheral aircraft which can abnormally near to the aircraft of interest based on a circle whose center is a passage position of the peripheral aircraft and whose radius is the threshold and predetermined speeds of the moving bodies, dividing the period information of the aircraft of interest into two items of period information across the speed change point, and calculating an upper limit arrival time and a lower limit arrival time in the divided period information.

5. A movement-measurement-processing method comprising the steps of:

creating a set of period information each having a 3D coordinate with the coordinate values of 2D coordinates of a passage position of a moving body and its passage time as information on a start point and an end point from a movement plan of an aircraft of interest which is a moving body for which the movement plan is to be adjusted and a movement plan of each peripheral aircraft which is a moving body other than the aircraft of interest;

calculating a lower limit arrival time which is an end point arrival time when the aircraft of interest moves at an upper limit speed and an upper limit arrival time which is an end point arrival time when it moves at a lower limit speed for each item of period information of the aircraft of interest;

calculating a first projection matrix indicating mapping from a 3D space onto a 2D plane based on a period information pair having one item of period information of the aircraft of interest and one item of period information of a peripheral aircraft; and

selecting a peripheral aircraft which can abnormally near to the aircraft of interest by determining how a region obtained by mapping a region in a 3D space defined by a start point of period information of the aircraft of interest, a point having the coordinate values of passage position coordinates at an end point of the period information and a lower limit arrival time, and a point having the coordinate values of the passage position coordinates at the end point of the period information and an upper limit arrival time into a 2D plane by use of the first projection matrix crosses with a circle whose center is a passage position of the peripheral aircraft and whose radius is a determination standard threshold as to whether abnormal nearing will occur.

6. The movement-measurement-processing method according to claim 5, comprising the steps of:

calculating a second projection matrix indicating mapping from a 2D plane into a 3D space based on a period information pair; and

defining a line segment by mapping period information of the aircraft of interest paired with period information of a peripheral aircraft which can abnormally near to the aircraft of interest onto a 2D plane by use of a first projection matrix, when the line segment crosses with a circle whose center is a passage position of the peripheral aircraft which can abnormally near to the aircraft of interest and whose radius is the threshold, calculating coordinates of points of contact between tangent lines of the circle passing through the start point of the line segment and the circle, mapping the coordinates of the points of contact to points in a 3D space by use of the second projection matrix, and calculating period information of the aircraft of interest corresponding to a changed speed and the changed speed based on the coordinates of the points in a repeated manner, thereby finding an avoidance speed for avoiding abnormal nearing between the aircraft of interest and each peripheral aircraft determined as being able to abnormally near thereto.

7. The movement-measurement-processing method according to claim 6, comprising the step of:

dividing period information of the aircraft of interest into two items of period information across an externally designated point.

8. The movement-measurement-processing method according to claim 6, further comprising the steps of:

specifying a peripheral aircraft with the earliest abnormal nearing time to the aircraft of interest; and

calculating a speed change point in a period indicated by period information of the aircraft of interest paired with period information of the peripheral aircraft which can abnormally near to the aircraft of interest based on a circle whose center is a passage position of the peripheral aircraft and whose radius is the threshold and predetermined speeds of the moving bodies, dividing the period information of the aircraft of interest into two items of period information across the speed change point, and calculating an upper limit arrival time and a lower limit arrival time in the divided period information.

9. A non-transitory computer readable recording medium in which a movement-measurement-processing program is recorded, the movement-measurement-processing program causing a computer to perform:

period information creation processing of creating a set of period information each having a 3D coordinate with the coordinate values of 2D coordinates of a passage position of a moving body and its passage time as information on a start point and an end point from a movement plan of an aircraft of interest which is a moving body for which the movement plan is to be adjusted and a movement plan of each peripheral aircraft which is a moving body other than the aircraft of interest;

arrival time calculation processing of calculating a lower limit arrival time which is an end point arrival time when the aircraft of interest moves at an upper limit speed and an upper limit arrival time which is an end point arrival time when it moves at a lower limit speed for each item of period information of the aircraft of interest;

projection matrix calculation processing of calculating a first projection matrix indicating mapping from a 3D space onto a 2D plane based on a period information pair having one item of period information of the aircraft of interest and one item of period information of a peripheral aircraft; and

peripheral aircraft selection processing of selecting a peripheral aircraft which can abnormally near to the aircraft of interest by determining how a region obtained by mapping a region in a 3D space defined by a start point of period information of the aircraft of interest, a point having the coordinate values of passage position coordinates at an end point of the period information and a lower limit arrival time, and a point having the coordinate values of the passage position coordinates at the end point of the period information and an upper limit arrival time into a 2D plane by use of the first projection matrix crosses with a circle whose center is a passage position of the peripheral aircraft and whose radius is a determination standard threshold as to whether abnormal nearing will occur.

10. The non-transitory computer readable recording medium in which the movement-measurement-processing program is recorded according to claim 9, the program causing a computer to perform:

projection matrix calculation processing of calculating a second projection matrix indicating mapping from a 2D plane into a 3D space based on a period information pair; and

avoidance speed derivation processing of defining a line segment by mapping period information of the aircraft of interest paired with period information of a peripheral aircraft which can abnormally near to the aircraft of interest onto a 2D plane by use of a first projection matrix, when the line segment crosses with a circle whose center is a passage position of the peripheral aircraft which can abnormally near to the aircraft of interest and whose radius is the threshold, calculating coordinates of points of contact between tangent lines of the circle passing through the start point of the line segment and the circle, mapping the coordinates of the points of contact to points in a 3D space by use of the second projection matrix, and calculating period information of the aircraft of interest corresponding to a changed speed and the changed speed based on the coordinates of the points in a repeated manner, thereby finding an avoidance speed for avoiding abnormal nearing between the aircraft of interest and each peripheral aircraft determined as being able to abnormally near thereto.

11. The non-transitory computer readable recording medium in which the movement-measurement-processing program is recorded according to claim 10, the program causing a computer to perform:

period information creation processing of dividing period information of the aircraft of interest into two items of period information across an externally designated point.

12. The non-transitory computer readable recording medium in which the movement-measurement-processing program is recorded according to claim 10, the program causing a computer to perform:

peripheral aircraft selection processing of specifying a peripheral aircraft with the earliest abnormal nearing time to the aircraft of interest; and

period information division processing of calculating a speed change point in a period indicated by period information of the aircraft of interest paired with period information of the peripheral aircraft which can abnormally near to the aircraft of interest based on a circle whose center is a passage position of the peripheral aircraft and whose radius is the threshold and predetermined speeds of the moving bodies, dividing the period information of the aircraft of interest into two items of period information across the speed change point, and calculating an upper limit arrival time and a lower limit arrival time in the divided period information.