EP1946284A1 - Procede d'optimisation de l'affichage de donnees relatives aux risques lies aux obstacles - Google Patents
Procede d'optimisation de l'affichage de donnees relatives aux risques lies aux obstaclesInfo
- Publication number
- EP1946284A1 EP1946284A1 EP06807753A EP06807753A EP1946284A1 EP 1946284 A1 EP1946284 A1 EP 1946284A1 EP 06807753 A EP06807753 A EP 06807753A EP 06807753 A EP06807753 A EP 06807753A EP 1946284 A1 EP1946284 A1 EP 1946284A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- obstacle
- obstacles
- list
- filtered
- display
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 29
- 238000001914 filtration Methods 0.000 claims description 45
- 238000000605 extraction Methods 0.000 claims description 10
- 230000004888 barrier function Effects 0.000 claims description 2
- 238000003384 imaging method Methods 0.000 abstract 1
- 238000003672 processing method Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G5/00—Traffic control systems for aircraft
- G08G5/70—Arrangements for monitoring traffic-related situations or conditions
- G08G5/72—Arrangements for monitoring traffic-related situations or conditions for monitoring traffic
- G08G5/723—Arrangements for monitoring traffic-related situations or conditions for monitoring traffic from the aircraft
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G5/00—Traffic control systems for aircraft
- G08G5/70—Arrangements for monitoring traffic-related situations or conditions
- G08G5/74—Arrangements for monitoring traffic-related situations or conditions for monitoring terrain
Definitions
- the invention relates in particular to a method of optimizing the display of data relating to the risks associated with obstacles.
- the invention applies to the optimization of the display of the alerts relating to the risk of collision with point or linear obstacles taking into account the trajectory of the aircraft and the altitude of the obstacles.
- CFIT Controlled Flight Into Terrain
- a terrain knowledge and warning system may include a display device to alert the crew of the aircraft of potential risks related to terrain.
- the different areas of the terrain overflown are displayed with a color code on a navigation screen. Areas with no particular hazard for the aircraft are displayed in black, areas with low risk in green, areas with medium risk in yellow, and areas with high risk in red.
- Field knowledge and warning systems can also be supplemented by a collision prediction function with obstacles, such as for example man-made obstacles of the electric lines type or of the high-rise constructions type.
- the crew of the aircraft must therefore have a means to become aware of the obstacles in the environment of the aircraft in addition to information on the corresponding terrain. Alerts of different levels are likely to be generated for each obstacle presenting a risk for the aircraft by the function of predictions of collision with obstacles. These alerts must also be able to be communicated to the crew by a given interface.
- the subject of the invention is a method for optimizing the display of data relating to the obstacles receiving the information necessary for the definition of the zone comprising the obstacles to be displayed.
- the method comprises the following steps:
- the filtering and grouping step includes a step of filtering the obstacles according to the elevation where a list of obstacles filtered according to their elevation is constructed with the set of obstacles present in the obstacle list of which the elevation is less than the display threshold received among the information.
- the filtering and grouping step may notably comprise a filtering step.
- Said filtering step comprises for example the following steps: a step of initializing a variable n to the value of the smallest possible position of an obstacle in the obstacle list filtered according to their elevation; an obstacle extraction step O (n) whose position in the obstacle list filtered according to their elevation is equal to n; a step of initializing a variable p, fixed to a unit;
- the step of removing the obstacle O (n) from the filtered list of obstacles the step being followed by a step of incrementing the variable n; the step of incrementing the variable n by one unit, the step being followed by a step of verifying the existence of the obstacle O (n); the step of verifying the existence of the obstacle O (n) exists in the list of obstacles filtered according to their elevation: o if the obstacle O (n) exists, we go back to the step of initialization of a variable p; o if the obstacle O (n) does not exist, we go to a step marking the end of the filtering process according to the proximity of the obstacles; The list of obstacles filtered in the state where it is in the check step of the existence of the obstacle O (n) is transmitted as a filtered obstacle list.
- the minimum distance D between two displayed obstacles can for example be calculated by dividing the maximum range relative to the aircraft of the data to be displayed by a coefficient k.
- a test step (24) checking whether the absolute value of the difference between the latitude of the obstacle O (n + p) and the latitude of the obstacle O (n) is less than a minimum distance D:
- the step of generating the symbology adapted to the display of the obstacles comprises:
- One of the advantages of the invention is that it ensures safe vertical separation of obstacles, particularly during the landing phases, thus ensuring that the crew has a good knowledge of the situation.
- the invention may furthermore be integrated with a system of field knowledge and alerts.
- FIG. 1 a system for filtering and displaying information and alerts for obstacles according to the invention
- FIG. 2 an obstacle filtering method according to the invention that can be implemented in the obstacle filtering device according to the invention
- FIG. 3 a filtering method according to the proximity of the obstacles according to the invention.
- FIG. 1 illustrates a system for filtering and displaying information and alerts for obstacles according to the invention.
- a Terrain Awareness and Warning System is an instrument that can be embarked on board an aircraft. It includes a topographic database on the terrain of embarked land.
- a topographical database of obstacles can in particular, to supplement the existing data included in the topographical database on terrain relief.
- An obstacle can be a so-called punctual obstacle if it is restricted to a limited geographical area.
- a punctual obstacle can be described in particular by its latitude, longitude and height, for example a height expressed above sea level (or the English expression Above mean sea level height). To this we can add the precision of each of its coordinates and possibly its horizontal extension.
- the system for filtering and displaying information and alerts for obstacles according to the invention comprises in particular an obstacle extraction device 2, an obstacle filtering device 5 and a processing device. the display of information and alerts for obstacles 6.
- the system for filtering and displaying information and alerts for obstacles according to the invention can be coupled with:
- a terrain warning device 4 generally included in a terrain knowledge and warning system
- the terrain warning device 4 provides the obstacle extraction device 2 with a range and an orientation defining the zone comprising the obstacles to be displayed. This range is for example the range selected by the crew for the navigation screen where the data relating to the obstacles must be displayed. This navigation screen can notably be included in the terrain warning device 4.
- the obstacle extraction device 2 extracts from the obstacle database 1 the list of obstacles included in the geographical area defined by the range, the orientation and position of the aircraft.
- the system for filtering and displaying information and alerts for obstacles according to the invention can notably manage several display devices at the output. Also, a list of obstacles is extracted by the obstacle extraction device 4, for each display device managed, with scope and orientation parameters specific to each.
- the obstacle filtering device 5 receives the list of obstacles extracted by the obstacle extraction device 2.
- the obstacle filtering device 5 also receives from the terrain warning device 4 a display threshold corresponding to the elevation minimum below which terrain or obstacle information should not be displayed.
- the obstacle filtering device 5 further receives from the obstacle collision prediction device and alerts 3 a list of obstacle alerts.
- the obstacle filtering device 5 filters the list of obstacles extracted by the obstacle extraction device 2:
- the obstacle filtering device 5 generates a list of obstacles to be displayed.
- the obstacle display processing device 6 receives the list of obstacles to display from the obstacle filtering device 5. Depending on the parameters relating to an obstacle, the obstacle display processing device 6 has the function, in particular, of generation of the adapted symbology.
- FIG. 2 illustrates an obstacle filtering method according to the invention that can be implemented in the obstacle filtering device according to the invention. Elements identical to the elements already presented bear the same references.
- the obstacle filtering method receives an obstacle list 10.
- This obstacle list 10 may in particular be provided by an obstacle extraction device 2.
- the obstacle filtering method also receives a terrain warning device 4 information 11 including the display threshold corresponding to the minimum elevation below which the information relating to the grounds or obstacles should not be displayed.
- the obstacle filtering device 5 further receives from the obstacle collision prediction device and alerts 3 a list of alerts 12 relating to obstacles.
- the collision prediction device with an obstacle and alert 3 can generate different alerts depending on:
- the generated alerts can for example be divided into three categories:
- the obstacle filtering method according to the invention comprises in particular a step 16 for filtering obstacles according to the elevation.
- a list of obstacles filtered according to their elevation 13 is constructed with all the obstacles present in the obstacle list 10, the elevation of which is lower than the display threshold received among the information items 1 1.
- the elevation may especially be expressed above sea level (or Above mean sea level height).
- the list of obstacles filtered according to their elevation 13 is then transmitted to a filtering step according to the proximity of the obstacles. When several obstacles are too close to each other to be displayed correctly and distinctly, it is useful to display only one obstacle known as multiple obstacle. Step 15 is therefore particularly intended to produce a filtered list of obstacles 14 output with obstacles and multiple obstacles when necessary.
- FIG. 3 shows a filtering method according to the proximity of the obstacles according to the invention.
- This filtering method can notably be implemented in step 15 of the obstacle filtering method described in FIG. 2.
- the elements identical to the elements already presented bear the same references.
- the minimum distance D can further be calculated by dividing the display range by a coefficient k.
- the coefficient k may for example be chosen equal to 40, or take any other value depending on the desired display.
- the filtering method according to the proximity of the obstacles starts at a step 20 where the variable n is set to 1 (or 0 if the first index of the obstacle list filtered according to their elevation 13 is equal to 0).
- the obstacle noted O (n) (that is to say the obstacle whose position in the obstacle list filtered according to their elevation 13 is equal to n) is extracted from the filtered obstacle list according to their elevation 13 and the variable p is set to 1.
- the obstacle noted O (n + p) whose position in the list of obstacles filtered according to their elevation 13 is equal to n + p is then extracted in a step 22. .
- a test 24 attempts to verify whether the absolute value of the difference between the latitude of the obstacle O (n + p) and the latitude of the obstacle O (n) is less than the minimum distance D: is not the case, the index p is incremented by 1 in a step 25; then in a step 23 it is checked whether the obstacle O (n + p) exists in the list of obstacles filtered according to their elevation 13 If the obstacle O (n + p) exists, go back to step 22. If the obstacle O (n + p) does not exist, proceed to a step 31 described later. - If so, go to step 26.
- test step 24 makes it possible to optimize the performance of the filtering method according to the proximity of the obstacles. However, in one embodiment, the test step 24 may be deleted. In this case, step 22 is then followed by step 26. Step 26 compares the distance d (O (n), O (n + p)) between the obstacle
- Step 27 searches the alert list 12 for the alert level relating to the obstacle O (n) and the obstacle O (n + p).
- the alert level of the obstacle O (n) is denoted by A (O (n)).
- the alert level of the obstacle O (n + p) is denoted by A (O (n + p)).
- Step 28 If the alert level relating to the obstacle O (n) is greater than the alert level relating to the obstacle O (n + p), a step 28 is taken. If the alert level relating to the obstacle O obstacle O (n) is lower than the alert level relative to the obstacle O (n + p), we go to a step 30. If the alert level relating to the obstacle O (n) is equal to alert level for the obstacle O (n + p), step 29 is carried out. Step 29 compares the horizontal distance d (O (n)) with respect to the aircraft of the obstacle O ( n) and the horizontal distance d (O (n + p)) with respect to the aircraft from the obstacle O (n + p).
- step 30 If the horizontal distance d (O (n)) is greater than the horizontal distance d (O (n + p)), go to step 30. If the horizontal distance d (O (n)) is less than horizontal distance d (O (n + p)), go to step 28.
- Step 28 removes the obstacle O (n + p) from the filtered obstacle list 13. Step 28 is followed by step 25.
- Step 30 removes the obstacle O (n) from the list of filtered obstacles 13.
- Step 30 is followed by a step 31.
- Step 31 increments the variable n by 1.
- Step 31 is followed by step 32.
- Step 32 checks whether the obstacle O (n) exists in the list of obstacles filtered according to their elevation 13. If the obstacle O (n) exists, we go back to step 21. If the obstacle O (n) does not exist, proceed to a step 33 marking the end of the filtering process according to the proximity of the obstacles.
- the filtered obstacle list in the state where it is in step 32 is transmitted as a filtered obstacle list 14
- FIG. 4 illustrates an obstacle display processing method 6 according to the invention that can be implemented in the obstacle processing device according to the invention. Elements identical to the elements already presented bear the same references.
- the filtered obstacle list 14 resulting from a filtering method according to the proximity of the obstacles is received at the input of a step 40 for processing the display of obstacle alerts.
- Linear obstacles included in the filtered obstacle list 14 are treated as a list of one-off obstacles. If an alert is associated with a linear obstacle, the point obstacles representing the ends of said linear obstacle are treated as point obstacles having an alert of the same level as the linear obstacle.
- step 40 of processing the display of obstacle alerts ensures that the obstacle is displayed in the same color as the field alert. corresponding.
- step 40 of processing the obstacle alert display ensures that the obstacle is displayed in the same color as the corresponding field.
- a different symbol is attached depending on whether the obstacle is multiple or not.
- a multiple obstacle may be represented by a symbol with several colored triangles in perspective while the other obstacles may be represented by a colored triangle.
- the symbols to be displayed are sent to the different navigation screens.
- the output 42 can in particular respect the Arinc708 protocol.
Landscapes
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Traffic Control Systems (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0511461A FR2893174B1 (fr) | 2005-11-10 | 2005-11-10 | Procede d'optimisation de l'affichage de donnees relatives aux risques lies aux obstacles |
| PCT/EP2006/068129 WO2007054481A1 (fr) | 2005-11-10 | 2006-11-06 | Procede d'optimisation de l'affichage de donnees relatives aux risques lies aux obstacles |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1946284A1 true EP1946284A1 (fr) | 2008-07-23 |
| EP1946284B1 EP1946284B1 (fr) | 2012-09-12 |
Family
ID=36849030
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP06807753A Ceased EP1946284B1 (fr) | 2005-11-10 | 2006-11-06 | Procede d'optimisation de l'affichage de donnees relatives aux risques lies aux obstacles |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US8285478B2 (fr) |
| EP (1) | EP1946284B1 (fr) |
| FR (1) | FR2893174B1 (fr) |
| WO (1) | WO2007054481A1 (fr) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2913800B1 (fr) * | 2007-03-13 | 2010-08-20 | Thales Sa | Dispositifs et procedes de filtrage d'alertes anti-collision de terrain et d'obstacles pour aeronef |
| FR2923641B1 (fr) | 2007-11-14 | 2011-03-18 | Thales Sa | Procede de protection par signalisation d'un aeronef contre les risques de collision avec le terrain lors de procedures a couloir de protection reduit avec fonctions specifiques |
| US20100023264A1 (en) * | 2008-07-23 | 2010-01-28 | Honeywell International Inc. | Aircraft display systems and methods with obstacle warning envelopes |
| FR2957447B1 (fr) * | 2010-03-15 | 2012-10-26 | Eurocopter France | Procede et dispositif pour voler a l'aide d'un aeronef a basse altitude de maniere securisee |
| FR2962838B1 (fr) * | 2010-07-16 | 2012-07-13 | Eurocopter France | Procede d'aide au pilotage ameliore pour aeronef |
| US9076326B2 (en) * | 2013-02-21 | 2015-07-07 | Honeywell International Inc. | Systems and methods for traffic prioritization |
| US9390559B2 (en) | 2013-03-12 | 2016-07-12 | Honeywell International Inc. | Aircraft flight deck displays and systems and methods for enhanced display of obstacles in a combined vision display |
| FR3015100B1 (fr) | 2013-12-16 | 2015-12-25 | Eurocopter France | Procede de detection et d'affichage d'un risque de collision pour un aeronef, generant une alarme de synthese relative a un evitement d'obstacle verticalement vers le haut |
| FR3020042B1 (fr) * | 2014-04-17 | 2017-11-10 | Sagem Defense Securite | Procede d'aide a la manoeuvre au sol d'un aeronef |
| US9766336B2 (en) * | 2015-03-16 | 2017-09-19 | Here Global B.V. | Vehicle obstruction detection |
Family Cites Families (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0750238B1 (fr) * | 1995-06-20 | 2000-03-01 | Honeywell Inc. | Système intégré d'anti-collision avec le sol |
| US6606034B1 (en) * | 1995-07-31 | 2003-08-12 | Honeywell International Inc. | Terrain awareness system |
| US5839080B1 (en) * | 1995-07-31 | 2000-10-17 | Allied Signal Inc | Terrain awareness system |
| US6292721B1 (en) * | 1995-07-31 | 2001-09-18 | Allied Signal Inc. | Premature descent into terrain visual awareness enhancement to EGPWS |
| US6138060A (en) * | 1995-07-31 | 2000-10-24 | Alliedsignal Inc. | Terrain awareness system |
| US5936552A (en) * | 1997-06-12 | 1999-08-10 | Rockwell Science Center, Inc. | Integrated horizontal and profile terrain display format for situational awareness |
| US6021374A (en) * | 1997-10-09 | 2000-02-01 | Mcdonnell Douglas Corporation | Stand alone terrain conflict detector and operating methods therefor |
| US6157891A (en) * | 1998-11-16 | 2000-12-05 | Lin; Ching-Fang | Positioning and ground proximity warning method and system thereof for vehicle |
| WO2000047948A1 (fr) * | 1999-02-01 | 2000-08-17 | Honeywell International Inc. | Appareils, procedes et programmes informatiques pour generer une enveloppe de marge de franchissement de relief autour d'une piste selectionnee |
| US6583733B2 (en) * | 2000-05-26 | 2003-06-24 | Honeywell International Inc. | Apparatus, method and computer program product for helicopter ground proximity warning system |
| US6906641B2 (en) * | 2000-05-26 | 2005-06-14 | Honeywell International Inc. | Apparatus, method and computer program product for helicopter enhanced ground proximity warning system |
| US6833797B2 (en) * | 2000-05-26 | 2004-12-21 | Honeywell International Inc. | Method, apparatus and computer program product for displaying terrain in rotary wing aircraft |
| FR2813963B1 (fr) * | 2000-09-08 | 2002-11-15 | Thomson Csf | Perfectionnements a la visualisation de dispositifs d'anti collision terrain pour aeronef |
| US6480789B2 (en) * | 2000-12-04 | 2002-11-12 | American Gnc Corporation | Positioning and proximity warning method and system thereof for vehicle |
| JP4025649B2 (ja) * | 2001-01-23 | 2007-12-26 | ハネウェル・インターナショナル・インコーポレーテッド | ヘリコプター用egpwsカットオフ高度 |
| US6484072B1 (en) * | 2001-09-28 | 2002-11-19 | The United States Of America As Represented By The Secretary Of The Navy | Embedded terrain awareness warning system for aircraft |
| US20040068372A1 (en) * | 2002-10-03 | 2004-04-08 | Ybarra Kathryn W. | Threat avoidance system and methods using adjustments to built-in values |
| US7580776B1 (en) * | 2003-07-29 | 2009-08-25 | Rockwell Collins, Inc. | Integrated separation assurance method for an aircraft |
| EP1524500B1 (fr) * | 2003-10-13 | 2014-08-06 | Saab Ab | Méthode et dispositif pour plannifier une trajectoire |
| FR2867559B1 (fr) * | 2004-03-12 | 2006-05-26 | Thales Sa | Dispositif d'affichage de carte topographique pour aeronef |
-
2005
- 2005-11-10 FR FR0511461A patent/FR2893174B1/fr not_active Expired - Fee Related
-
2006
- 2006-11-06 WO PCT/EP2006/068129 patent/WO2007054481A1/fr not_active Ceased
- 2006-11-06 EP EP06807753A patent/EP1946284B1/fr not_active Ceased
- 2006-11-06 US US12/093,155 patent/US8285478B2/en not_active Expired - Fee Related
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2007054481A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1946284B1 (fr) | 2012-09-12 |
| US8285478B2 (en) | 2012-10-09 |
| FR2893174A1 (fr) | 2007-05-11 |
| WO2007054481A1 (fr) | 2007-05-18 |
| FR2893174B1 (fr) | 2008-01-25 |
| US20080281522A1 (en) | 2008-11-13 |
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