# US 9,517,844 B2 · System and method for displaying airport features on a dynamic airport moving map display > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,517,844 B2 - Document ID: US9517844B2 - Status: Granted - Kind: B2 - Application number: 14/036,181 - Filed: 2013-09-25 - Published: 2015-03-26 - Granted: 2016-12-13 - Earliest claimed: 2013-09-25 - Assignees: Honeywell International Inc. - Applicants: Honeywell International Inc. - Inventors: Ratan Khatwa; Melissa Ziarnick - Web page: https://patentgrep.com/patent/US9517844B2 ## CPC - B64D 45/00: Aircraft indicators or protectors not otherwise provided for - G08G 5/21: located onboard the aircraft - G08G 5/51: for control when on the ground, e.g. taxiing or rolling - B64D: EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT - G08G: TRAFFIC CONTROL SYSTEMS (guiding railway traffic, ensuring the safety of railway traffic B61L; arrangement of road signs or traffic signals E01F9/00; radar or analogous systems, sonar systems, lidar systems specially adapted for traffic control G01S13/91, G01S15/88, G01S17/88; {radar or analogous systems, sonar systems, lidar systems specially adapted for anti-collision purposes G01S13/93, G01S15/93, G01S17/93}) ## Abstract A method and apparatus is provided for enhancing situational awareness onboard an aircraft during an aircraft ground maneuver such as when taxiing on a runway or taxiway. A three-dimensional view including airport features is rendered in a first airport region that extends a first predetermined distance (D1) from the aircraft when the aircraft speed is less than a predetermined speed (V1). A three-dimensional view including airport features in a second airport region is rendered that extends beyond D1 when the aircraft speed exceeds V1. ## Claims ### Claim 1 A method for enhancing situational awareness onboard an aircraft during an aircraft ground maneuver, the method comprising: increasing the depth of the field-of-view of a three dimensional flight deck display element in response to the aircraft attaining a speed that exceeds a predetermined speed; displaying airport features that fall within a first predetermined distance from the aircraft when the aircraft is taxiing below a predetermined speed; increasing the area displayed to a second predetermined distance from the aircraft in accordance with aircraft speed such that, when the aircraft exceeds the predetermined speed, the second predetermined distance increases according to (i) a step function or (ii) a linear function in combination with a step function; and increasing the second predetermined distance in relation to the distance travelled by the aircraft in a predetermined period of time. ### Claim 2 (depends on 1) The method of claim 1, further comprising: receiving aircraft position and heading data; and retrieving airport feature data. ### Claim 3 (depends on 1) The method of claim 1, further comprising increasing the second predetermined distance in discrete steps that correspond to discrete increases in aircraft speed. ### Claim 4 (depends on 1) The method of claim 1, further comprising: generating symbology representative of at least one of a taxiway and a runway; displaying on the display the symbology of the at least one of a taxiway and a runway; generating symbology representative of the aircraft; and generating symbology representative of airport features; displaying the aircraft and airport features that are within the first predetermined distance of the aircraft when the speed of the aircraft is below a predetermined speed; and displaying the aircraft and airport features that are within the first predetermined distance of the aircraft and airport features that are within a second predetermined distance when the speed of the aircraft exceeds the predetermined speed. ### Claim 5 (depends on 1) The method of claim 1, wherein the airport feature data comprises one or more of runways, taxiways, runway markings, taxiway markings, center lines, identification signs, hold bars, and hold short lines. ### Claim 6 (depends on 1) The method of claim 1, further comprising coordinating the display of airport feature markings with the onset of aural alerts in the aircraft. ### Claim 7 A method for displaying a dynamic synthetic view of an airport moving map on a flight deck display system on an aircraft, comprising: receiving airport feature data; receiving aircraft speed data; rendering on the display system a three-dimensional view including airport features in a first airport region that extends a first predetermined distance (D1) from the aircraft when the aircraft speed is less than a predetermined speed (V1); rendering on the display a three-dimensional view including airport features from the first airport region and airport features in a second airport region that extends to a second predetermined distance (D2) from the aircraft when the aircraft speed exceeds the predetermined speed (V1), wherein (i) the second predetermined distance is greater than the first predetermined distance and (ii) the second predetermined distance is related to the speed of the aircraft as (a) a step function or (b) a combination of a linear function and a step function; and increasing the second predetermined distance by a distance travelled in a predetermined period of time at the current aircraft groundspeed. ### Claim 8 (depends on 7) The method of claim 7, further comprising increasing the second airport region by predetermined amounts in discrete steps that correspond to discrete increases in aircraft speed. ### Claim 9 (depends on 7) The method of claim 7, wherein the predetermined period of time is substantially four seconds. ### Claim 10 (depends on 7) The method of claim 7, wherein airport features in the first airport region are rendered using a first set of visually distinguishable characteristics, and wherein airport features and the second airport region are rendered using a second set of visually distinguishable characteristics, the second set different than the first set. ### Claim 11 (depends on 10) The method of claim 10, wherein the visually distinguishable characteristics may be related to one or more of color; brightness; transparency level; translucency level; fill pattern; shape; size; flicker pattern; focus level; sharpness level; clarity level; shading; dimensionality (2D or 3D); resolution; and outline pattern. ### Claim 12 A flight deck display system, comprising: a first source of airport feature data; a second source of aircraft speed data; a third source of aircraft position data; a display element; and a processor operatively coupled to the first, second, and third sources and to the display element and configured to (1) access the first, second, and third sources; (2) render on the display element a three-dimensional view including airport features in a first airport region that extends a first predetermined distance (D1) from the aircraft when the aircraft speed is less than a predetermined speed (V1); and (3) render on the display a three-dimensional view including airport features in the first airport region and a second airport region that extends a second predetermined distance (D2) from the aircraft when the aircraft speed exceeds the predetermined speed (V1); wherein a relationship between D2 and V1 comprises one of (i) a step function, and (ii) a linear function in combination with a step function; and wherein D2 is greater than D1; and wherein the processor is further configured to increase the second predetermined distance (D2) by a distance travelled by the aircraft in a predetermined period of time at a current aircraft groundspeed.