Airport damage assessment method and device based on overall damage tree method

Abstract

The invention belongs to the field of airport damage assessment, and particularly relates to an airport damage assessment method and device based on an overall damage tree method. The method comprises the following steps: S1, acquiring a preset range of each airport functional area; s2, calculating the damage area of the projectile to the airport functional area according to the falling point coordinates of the projectile and the damage radius; s3, calculating the total damage area of all projectiles to each airport functional area; and S4, comparing the damage proportion of each airport functional area with a target proportion in a set damage grade, and determining the damage grade. According to the invention, real-time rapid evaluation of target airport blocking strike is realized, and scientificity and credibility of strike effect verification are effectively improved.

Description

Technical Field

[0001] The present application relates to the field of airport damage assessment, and in particular to an airport damage assessment method and device based on an overall damage tree method. Background Art

[0002] Due to the complexity and critical importance of airport facilities, traditional destruction methods are difficult to achieve high-intensity damage to airports. Modern airports, equipped with underground bunkers and redundant command systems, as well as their ever-increasing rapid repair capabilities, present new challenges for airport destruction. Therefore, exploring and simulating new airport runway interdiction strategies to achieve mission objectives with reasonable cost-effectiveness is a key area of ​​modern offensive and defensive research. To validate interdiction strategies, a scientific and rational assessment of airport damage is urgently needed.

[0003] Most existing airport damage assessment methods rely on empirical formulas or qualitative judgment analysis, which have certain limitations in assessment efficiency and rationality, and are no longer able to meet the verification and iteration requirements of mission execution. Especially when the enemy has multiple repair technologies, how to scientifically and accurately assess the blockade damage effect and timely optimize the mission strategy has become a pressing issue. Furthermore, with the continuous development of new types of delivery devices, how to verify the combination configuration of different delivery devices to maximize their effectiveness also requires the blockade assessment system to provide reliable results feedback.

[0004] When an airport is attacked by a blockade, not only does the runway itself require damage assessment, but the integrity of different functional zones also affects the efficiency of runway repair, which in turn affects the runway damage assessment results. Traditional numerical simulation or empirical judgment methods are unable to assess the impact of different functional zones on the probability of runway blockade. Summary of the Invention

[0005] In order to solve the above problems, the present application provides an airport damage assessment method and device based on the overall damage tree method, which avoids the limitations and subjectivity of traditional numerical calculation and empirical judgment methods, and can provide a universal assessment and calculation method for air-based blockade strike assessment, secondary blockade strike, etc.

[0006] The first aspect of the present application provides an airport damage assessment method based on the overall damage tree method, which mainly includes:

[0007] Step S1: obtaining the range of each preset airport functional area;

[0008] Step S2: Calculate the damage area of ​​the airport functional area caused by the projectile based on the projectile impact point coordinates and damage radius;

[0009] Step S3, calculating the total damage area of ​​all projectiles to each airport functional area;

[0010] Step S4: Compare the damage ratio of each airport functional area with the target ratio in the set damage level to determine the damage level.

[0011] Preferably, in step S1, the airport functional area includes the airport runway, navigation tower, hangar, oil depot, apron and living area, and the scope of each airport functional area is represented by an equivalent circle.

[0012] Preferably, step S2 further comprises:

[0013] Step S21, calculating the center distance between the center of the equivalent circle of the aircraft functional area and the projectile landing point coordinates;

[0014] Step S22: When the center distance is less than the difference between the equivalent circle radius of the aircraft functional area and the projectile damage radius, the smaller value between the aircraft functional area and the projectile damage area is used as the damage area of ​​the projectile to the aircraft functional area; when the center distance is greater than the difference between the equivalent circle radius of the aircraft functional area and the projectile damage radius, and less than the sum of the equivalent circle radius of the aircraft functional area and the projectile damage radius, the overlapping area of ​​the equivalent circle of the aircraft functional area and the projectile damage area is used as the damage area of ​​the projectile to the aircraft functional area.

[0015] Preferably, step S4 further comprises:

[0016] When the damage ratio of an airport runway exceeds 60%, it is considered as level one damage;

[0017] When the damage ratio of the airport runway is between 10% and 60%, and the damage ratio of the navigation tower exceeds 60%, it is determined to be level 2 damage;

[0018] When the damage rate of any of the airport runway, navigation tower, hangar, fuel depot, and apron is greater than 10%, it is determined to be level 3 damage;

[0019] When one or more of the airport runway, navigation tower, hangar, fuel depot, apron, and living area is damaged and the damage ratio of each airport functional area is less than 10%, it is determined to be level 4 damage.

[0020] Preferably, the method further comprises:

[0021] Step S5: Based on the comparison result of the damage target level and the damage level, calculate the blocking probability by statistical means, where the blocking probability refers to the proportion of successfully achieving the damage target level.

[0022] The second aspect of the present application provides an airport damage assessment device based on the overall damage tree method, which mainly includes:

[0023] Functional area range acquisition module, used to obtain the range of preset functional areas of each airport;

[0024] The projectile damage area calculation module is used to calculate the damage area of ​​the projectile to the airport functional area based on the projectile landing point coordinates and damage radius;

[0025] The total damage area calculation module is used to calculate the total damage area of ​​all projectiles to each airport functional area;

[0026] The damage level determination module is used to compare the damage ratio of each airport functional area with the target ratio in the set damage level to determine the damage level.

[0027] Preferably, in the functional area range acquisition module, the airport functional area includes the airport runway, navigation tower, hangar, oil depot, apron and living area, and the range of each airport functional area is represented by an equivalent circle.

[0028] Preferably, the projectile damage area calculation module includes:

[0029] A circle center distance calculation unit is used to calculate the circle center distance based on the center of the equivalent circle of the aircraft functional area and the coordinates of the projectile landing point;

[0030] The damage area calculation unit is used to take the smaller value between the aircraft functional area and the projectile damage area as the damage area of ​​the aircraft functional area when the center distance is less than the difference between the equivalent circle radius of the aircraft functional area and the projectile damage radius; when the center distance is greater than the difference between the equivalent circle radius of the aircraft functional area and the projectile damage radius, and less than the sum of the equivalent circle radius of the aircraft functional area and the projectile damage radius, take the overlapping area of ​​the equivalent circle of the aircraft functional area and the projectile damage area as the damage area of ​​the aircraft functional area.

[0031] Preferably, the damage level determination module includes:

[0032] Level 1 damage identification unit, used to determine if the damage ratio of an airport runway exceeds 60% as level 1 damage;

[0033] Level 2 damage identification unit, used to identify damage as level 2 when the damage ratio of the airport runway is between 10% and 60%, and the damage ratio of the navigation tower exceeds 60%;

[0034] The third-level damage identification unit is used to determine the damage level as level 3 when the damage ratio of any of the airport runway, navigation tower, hangar, fuel depot, and apron is greater than 10%;

[0035] The Level 4 damage identification unit is used to determine level 4 damage when one or more of the airport runway, navigation tower, hangar, oil depot, apron, and living area are damaged and the damage ratio of each airport functional area is less than 10%.

[0036] Preferably, the device further comprises:

[0037] The blocking probability calculation module is used to calculate the blocking probability based on the comparison result of the damage target level and the damage level by statistical means. The blocking probability refers to the proportion of successfully achieving the damage target level.

[0038] This application realizes the real-time and rapid evaluation of the blockade strike on the target airport, effectively improving the scientificity and credibility of the verification of the strike effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a flow chart of a preferred embodiment of the airport damage assessment method based on the overall damage tree method of the present application.

[0040] Figure 2 This is a schematic diagram of the airport's functional area division. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solutions and advantages of the implementation of this application clearer, the technical solutions in the implementation of this application will be described in more detail below in conjunction with the drawings in the implementation of this application. In the drawings, the same or similar numbers throughout represent the same or similar elements or elements with the same or similar functions. The described implementation is a part of the implementation of this application, not all of the implementations. The implementation described below with reference to the drawings is exemplary and is intended to be used to explain this application, and should not be understood as a limitation on this application. Based on the implementation in this application, all other implementations obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application. The implementation of this application is described in detail below in conjunction with the drawings.

[0042] The first aspect of the present application provides an airport damage assessment method based on the overall damage tree method, such as Figure 1 As shown, it mainly includes:

[0043] Step S1: obtaining the range of each preset airport functional area;

[0044] Step S2: Calculate the damage area of ​​the airport functional area caused by the projectile based on the projectile impact point coordinates and damage radius;

[0045] Step S3, calculating the total damage area of ​​all projectiles to each airport functional area;

[0046] Step S4: Compare the damage ratio of each airport functional area with the target ratio in the set damage level to determine the damage level.

[0047] This application addresses the limitations of existing methods and designs an airport blockade damage assessment system based on a comprehensive damage tree approach. By completing the functional area division and damage level classification of the airport, a comprehensive damage tree is constructed, and damage determination criteria and assessment procedures are formulated, including steps such as recording impact point coordinates, setting functional area coordinates, and calculating damage area.

[0048] First, in step S1, the airport is divided into functional areas. In some optional embodiments, in step S1, the airport functional areas include the airport runway, navigation tower, hangar, fuel depot, apron and living area, and the scope of each airport functional area is represented by an equivalent circle.

[0049] In this embodiment, the coordinate boundaries of each functional area are calculated based on the airport model and the coordinate origin, and are equivalent to a circular area, and the center and radius of the equivalent circle are determined. An airport is usually composed of a runway, a weather station, a navigation tower, an apron, a hangar, and support equipment. Taking the actual distribution data of a target airport as an example, it is divided into five functional areas: flight area, aircraft control area, flight support area, fuel supply area, and living area. Figure 2 To refine the blockade damage assessment items, the runways and aprons in the airfield, the navigation tower in the aircraft control area, the hangars in the flight support area, the fuel depot in the fuel supply area, and the living quarters were selected as the primary assessment targets. Ultimately, the six major airport functional areas of this embodiment were formed. Damage to these six airport functional areas will affect the overall capabilities of the airport.

[0050] Step S2 is used to determine the damage caused to each functional area of ​​the airport after the projectile explodes at the airport and calculate the damaged area. Before step S2, the type and motion equation of each projectile must be clearly determined to determine the impact point and the damage range based on the impact point.

[0051] In some optional embodiments, step S2 further includes:

[0052] Step S21, calculating the center distance between the center of the equivalent circle of the aircraft functional area and the projectile landing point coordinates;

[0053] Step S22: When the center distance is less than the difference between the equivalent circle radius of the aircraft functional area and the projectile damage radius, the smaller value between the aircraft functional area and the projectile damage area is used as the damage area of ​​the projectile to the aircraft functional area; when the center distance is greater than the difference between the equivalent circle radius of the aircraft functional area and the projectile damage radius, and less than the sum of the equivalent circle radius of the aircraft functional area and the projectile damage radius, the overlapping area of ​​the equivalent circle of the aircraft functional area and the projectile damage area is used as the damage area of ​​the projectile to the aircraft functional area.

[0054] This embodiment provides a method for calculating the damage area caused by a single projectile to various functional areas of an airport.

[0055] Assume that the coordinates of the center of the i-th airport functional area are (x gi ,y gi ), with a radius of R gi , the coordinates of the landing point of the j-th projectile are (x lj ,y lj ), with a radius of R lj From this, we can calculate the distance d between the centers of the circles, if d≤|R gi -R lj |or|R gi -R lj | <d<R gi +R lj , then it is a valid landing point, and the number of valid landing points H is recorded.

[0056] When there is an effective point d≤|R gi -R lj |, it means that one circle falls inside another circle, so the effective area is the area of ​​the circle with the smaller radius.

[0057] When | R gi -R lj | <d<R gi +R lj When , it means that the two circles intersect, and the coordinates of the intersection are calculated using the following formula:

[0058]

[0059] Assume that the coordinates of two points A and B are (x a ,y a )、(x b ,y b ), the distance d between point A and point B ab for Center of the landing point (x lj ,y lj ) to the line AB l for The center of the airport functional area (x gi ,y gi ) to the line AB g for Where A = y a -y b , B=x b -x a , C=x a y b -x b y a From this, we can calculate the area enclosed by the field function circle and the straight line AB as S g The area enclosed by the impact damage circle and the straight line AB is S l , then the damage area of ​​this landing point in the functional area is Sgil Calculated by the following formula:

[0060]

[0061] Then, in step S3, the damage areas of all projectiles are counted, and the total damage area S of each airport functional area can be calculated. gi It should be noted that the projectile impact points are usually quite scattered, so the summation formula can be used for calculation. If there is a special case where the damage areas of multiple projectiles overlap, the overlapping area needs to be further deducted. With the total damage area, the damage area ratio α of each functional area can be calculated. That is:

[0062]

[0063] In step S4, the obtained α value is compared with the damage mission target. If level 1 or level 2 damage occurs, the strike is considered successful and a 1 is output. Otherwise, a 0 is output. Airport target blockade damage can be divided into four damage levels according to its battlefield function:

[0064] 1) Level I damage: The airport runway is damaged, completely rendering aircraft unable to take off and land;

[0065] 2) Level II damage: If components of the navigation tower are damaged, aircraft may take off and land on the runway without guidance, making it prone to accidents such as collisions.

[0066] 3) Level III damage: The airport's fuel depots, hangars, aprons and other auxiliary facilities are damaged, making it difficult for the airport to operate for a long time;

[0067] 4) Level IV damage: Airport living quarters and other facilities need to be repaired.

[0068] Based on the above principles, it is stipulated that when the average relative damage area of ​​the target is less than 10%, it is a harassing strike; when the average relative damage area is between 10% and 60%, it is a suppressing strike; and when the average relative damage area is greater than 60%, it is a paralyzing strike. Since the target's main mission capability has been basically lost when it suffers a paralyzing strike, it can be considered that when the average relative damage area is greater than 60%, the target's effectiveness loss is greater than 90%; taking the average relative damage area of ​​30% under a suppressing strike as the benchmark parameter, the corresponding effectiveness loss is set at 50%. When it suffers a harassing strike, its effectiveness is not greatly affected, and it can be considered that the degree of decline in the target's effectiveness is less than 30%; based on these data, specific damage criteria are formulated. For example, in some optional embodiments, step S4 further includes:

[0069] When the damage ratio of an airport runway exceeds 60%, it is considered as level one damage;

[0070] When the damage ratio of the airport runway is between 10% and 60%, and the damage ratio of the navigation tower exceeds 60%, it is determined to be level 2 damage;

[0071] When the damage rate of any of the airport runway, navigation tower, hangar, fuel depot, and apron is greater than 10%, it is determined to be level 3 damage;

[0072] When one or more of the airport runway, navigation tower, hangar, fuel depot, apron, and living area is damaged and the damage ratio of each airport functional area is less than 10%, it is determined to be level 4 damage.

[0073] In some optional embodiments, the method further comprises:

[0074] Step S5: Based on the comparison result of the damage target level and the damage level, calculate the blocking probability by statistical means, where the blocking probability refers to the proportion of successfully achieving the damage target level.

[0075] In this embodiment, according to the number of Monte Carlo simulations set (n=200), the blocking probability is calculated as follows:

[0076]

[0077] Where p is the blocking probability; n F = _{\theta} is the number of successful blockade missions; n is the total number of simulations. This embodiment uses simulated statistical analysis to quantitatively calculate the success probability of blocking an opposing airport under different strategies. Its high versatility enables blockade strike assessments against different target airports. Furthermore, based on the Monte Carlo simulation method, statistical principles enhance the credibility of the assessment results.

[0078] In some optional embodiments, the method further comprises:

[0079] Step S6: Determine the repair time based on the damaged area that meets the minimum takeoff and landing window conditions of the aircraft.

[0080] In this embodiment, based on the successful blockade and damage, the damage area S that meets the aircraft minimum take-off and landing window conditions is calculated according to the runway damage area ratio. W , the average damage area of ​​each type of projectile S μ , then the number of repair points is calculated as S W / S μ , assuming that the repair time of each repair point is t, the total repair time T is:

[0081]

[0082] Among them, t is related to the penetration capability of the projectile and the material and structure of the airport facilities, and can usually be taken as 30-40 hours.

[0083] The second aspect of the present application provides an airport damage assessment device based on the overall damage tree method corresponding to the above method, which mainly includes:

[0084] Functional area range acquisition module, used to obtain the range of preset functional areas of each airport;

[0085] The projectile damage area calculation module is used to calculate the damage area of ​​the projectile to the airport functional area based on the projectile landing point coordinates and damage radius;

[0086] The total damage area calculation module is used to calculate the total damage area of ​​all projectiles to each airport functional area;

[0087] The damage level determination module is used to compare the damage ratio of each airport functional area with the target ratio in the set damage level to determine the damage level.

[0088] In some optional implementations, in the functional area range acquisition module, the airport functional area includes the airport runway, navigation tower, hangar, oil depot, apron and living area, and the range of each airport functional area is represented by an equivalent circle.

[0089] In some optional implementations, the projectile damage area calculation module includes:

[0090] A circle center distance calculation unit is used to calculate the circle center distance based on the center of the equivalent circle of the aircraft functional area and the coordinates of the projectile landing point;

[0091] The damage area calculation unit is used to take the smaller value between the aircraft functional area and the projectile damage area as the damage area of ​​the aircraft functional area when the center distance is less than the difference between the equivalent circle radius of the aircraft functional area and the projectile damage radius; when the center distance is greater than the difference between the equivalent circle radius of the aircraft functional area and the projectile damage radius, and less than the sum of the equivalent circle radius of the aircraft functional area and the projectile damage radius, take the overlapping area of ​​the equivalent circle of the aircraft functional area and the projectile damage area as the damage area of ​​the aircraft functional area.

[0092] In some optional implementations, the damage level determination module includes:

[0093] Level 1 damage identification unit, used to determine if the damage ratio of an airport runway exceeds 60% as level 1 damage;

[0094] Level 2 damage identification unit, used to identify damage as level 2 when the damage ratio of the airport runway is between 10% and 60%, and the damage ratio of the navigation tower exceeds 60%;

[0095] The third-level damage identification unit is used to determine the damage level as level 3 when the damage ratio of any of the airport runway, navigation tower, hangar, fuel depot, and apron is greater than 10%;

[0096] The Level 4 damage identification unit is used to determine level 4 damage when one or more of the airport runway, navigation tower, hangar, oil depot, apron, and living area are damaged and the damage ratio of each airport functional area is less than 10%.

[0097] In some optional embodiments, the device further comprises:

[0098] The blocking probability calculation module is used to calculate the blocking probability based on the comparison result of the damage target level and the damage level by statistical means. The blocking probability refers to the proportion of successfully achieving the damage target level.

[0099] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. An airport damage assessment method based on the overall damage tree method, characterized in that: include: Step S1: obtaining the range of each preset airport functional area; Step S2: Calculate the damage area of ​​the airport functional area caused by the projectile based on the projectile impact point coordinates and damage radius; Step S3, calculating the total damage area of ​​all projectiles to each airport functional area; Step S4: Compare the damage ratio of each airport functional area with the target ratio in the set damage level to determine the damage level.

2. The airport damage assessment method based on the overall damage tree method according to claim 1, characterized in that: In step S1, the airport functional area includes the airport runway, navigation tower, hangar, oil depot, apron and living area, and the scope of each airport functional area is represented by an equivalent circle.

3. The airport damage assessment method based on the overall damage tree method according to claim 2, characterized in that: Step S2 further comprises: Step S21, calculating the center distance between the center of the equivalent circle of the aircraft functional area and the projectile landing point coordinates; Step S22: When the center distance is less than the difference between the equivalent circle radius of the aircraft functional area and the projectile damage radius, the smaller value between the aircraft functional area and the projectile damage area is used as the damage area of ​​the projectile to the aircraft functional area; when the center distance is greater than the difference between the equivalent circle radius of the aircraft functional area and the projectile damage radius, and less than the sum of the equivalent circle radius of the aircraft functional area and the projectile damage radius, the overlapping area of ​​the equivalent circle of the aircraft functional area and the projectile damage area is used as the damage area of ​​the projectile to the aircraft functional area.

4. The airport damage assessment method based on the overall damage tree method according to claim 2, characterized in that: Step S4 further comprises: When the damage ratio of an airport runway exceeds 60%, it is considered as level one damage; When the damage ratio of the airport runway is between 10% and 60%, and the damage ratio of the navigation tower exceeds 60%, it is determined to be level 2 damage; When the damage rate of any of the airport runway, navigation tower, hangar, fuel depot, and apron is greater than 10%, it is determined to be level 3 damage; When one or more of the airport runway, navigation tower, hangar, fuel depot, apron, and living area is damaged and the damage ratio of each airport functional area is less than 10%, it is determined to be level 4 damage.

5. The airport damage assessment method based on the overall damage tree method according to claim 1, characterized in that: The method further comprises: Step S5: Based on the comparison result of the damage target level and the damage level, calculate the blocking probability by statistical means, where the blocking probability refers to the proportion of successfully achieving the damage target level.

6. An airport damage assessment device based on the overall damage tree method, characterized in that: include: Functional area range acquisition module, used to obtain the range of preset functional areas of each airport; The projectile damage area calculation module is used to calculate the damage area of ​​the projectile to the airport functional area based on the projectile landing point coordinates and damage radius; The total damage area calculation module is used to calculate the total damage area of ​​all projectiles to each airport functional area; The damage level determination module is used to compare the damage ratio of each airport functional area with the target ratio in the set damage level to determine the damage level.

7. The airport damage assessment device based on the overall damage tree method according to claim 6, characterized in that: In the functional area range acquisition module, the airport functional area includes the airport runway, navigation tower, hangar, oil depot, apron and living area, and the range of each airport functional area is represented by an equivalent circle.

8. The airport damage assessment device based on the overall damage tree method according to claim 7, characterized in that: The projectile damage area calculation module includes: A circle center distance calculation unit is used to calculate the circle center distance based on the center of the equivalent circle of the aircraft functional area and the coordinates of the projectile landing point; The damage area calculation unit is used to take the smaller value between the aircraft functional area and the projectile damage area as the damage area of ​​the aircraft functional area when the center distance is less than the difference between the equivalent circle radius of the aircraft functional area and the projectile damage radius; when the center distance is greater than the difference between the equivalent circle radius of the aircraft functional area and the projectile damage radius, and less than the sum of the equivalent circle radius of the aircraft functional area and the projectile damage radius, take the overlapping area of ​​the equivalent circle of the aircraft functional area and the projectile damage area as the damage area of ​​the aircraft functional area.

9. The airport damage assessment device based on the overall damage tree method according to claim 7, characterized in that: The damage level determination module includes: Level 1 damage identification unit, used to determine if the damage ratio of an airport runway exceeds 60% as level 1 damage; Level 2 damage identification unit, used to identify damage as level 2 when the damage ratio of the airport runway is between 10% and 60%, and the damage ratio of the navigation tower exceeds 60%; The third-level damage identification unit is used to determine the damage level as level 3 when the damage ratio of any of the airport runway, navigation tower, hangar, fuel depot, and apron is greater than 10%; The Level 4 damage identification unit is used to determine level 4 damage when one or more of the airport runway, navigation tower, hangar, oil depot, apron, and living area are damaged and the damage ratio of each airport functional area is less than 10%.

10. The airport damage assessment device based on the overall damage tree method according to claim 6, characterized in that: The device further comprises: The blocking probability calculation module is used to calculate the blocking probability based on the comparison result of the damage target level and the damage level by statistical means. The blocking probability refers to the proportion of successfully achieving the damage target level.

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