An airport-oriented vertical visibility calculation method, device, equipment and storage medium

Abstract

The application discloses an airport-oriented vertical visibility calculation method, comprising the following steps: acquiring horizontal visibility, first-layer cloud bottom height and second-layer cloud bottom height within a first time before the current time, obtaining a horizontal visibility array, a first-layer cloud bottom height array and a second-layer cloud bottom height array, and calculating the average value of the horizontal visibility, the average value of the first-layer cloud bottom height and the average value of the second-layer cloud bottom height; when the weather is fine, if there is 9999 in the first-layer cloud bottom height array, the vertical visibility is determined to be good; when the sky is obscured by weather phenomena, the vertical visibility is calculated through the average value of the horizontal visibility; and under other conditions, the vertical visibility is determined according to the average value of the horizontal visibility, in combination with the average value of the first-layer cloud bottom height and the average value of the second-layer cloud bottom height. The method provided by the application can quickly and accurately calculate the vertical visibility.

Description

Technical Field

[0001] This invention belongs to the field of airport meteorological support technology, specifically relating to a method, device, equipment, and storage medium for calculating vertical visibility for airports. Background Technology

[0002] Visibility is a routine item in meteorological observation. Low visibility and the accompanying severe weather often hinder land, sea and air transportation, causing loss of life and property.

[0003] Airports typically deploy projective or diffuser visibility meters to measure horizontal visibility on runways. These meters primarily rely on atmospheric aerosol parameters, determining the atmospheric extinction coefficient by comparing the echo signal from a coaxially illuminated photoelectric device with a reference signal, thus calculating horizontal visibility. Instruments for measuring vertical visibility are less common. While balloons or cloud lights are frequently deployed, these methods are cumbersome, time-consuming, susceptible to the subjective influence of observers, and have limited accuracy. Furthermore, vertical visibility affects the runway offset for aircraft landings and descents. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a method, apparatus, device and storage medium for calculating vertical visibility at airports, which addresses the shortcomings of the prior art. This method can calculate vertical visibility quickly and accurately without relying on the subjectivity of the observer.

[0005] To achieve the above objectives, according to one aspect of the present invention, a method for calculating vertical visibility for airports is provided, comprising: Obtain the horizontal visibility, first cloud base height, and second cloud base height within the first time period before the current moment, and obtain the horizontal visibility array, the first cloud base height array, and the second cloud base height array. Calculate the average value of the horizontal visibility, the average value of the first cloud base height, and the average value of the second cloud base height. When the weather is clear, if there is 9999 in the first layer of cloud base height array, the vertical visibility is considered good. When the sky is obscured by weather phenomena, vertical visibility is calculated using the average of the horizontal visibility. The specific calculation formula is as follows:

[0006] In the formula, VV This represents vertical visibility in meters (m); mod indicates the remainder. This represents the average horizontal visibility. Under other conditions, when the average horizontal visibility is not less than the first altitude, the vertical visibility is determined to be good; when the average horizontal visibility is not less than the second altitude and less than the first altitude, the vertical visibility is determined to be fair; when the average horizontal visibility is greater than the third altitude and less than the second altitude, if the average height of the first cloud base is not less than the fourth altitude, the vertical visibility is determined to be poor; if the average height of the first cloud base is not less than the second altitude and the average height of the second cloud base is not less than the fifth altitude, the vertical visibility is determined to be poor; if the average height of the first cloud base is not less than the second altitude and the average height of the second cloud base is less than the fifth altitude, the vertical visibility is determined to be suboptimal; if the average height of the first cloud base is less than the second altitude, the vertical visibility is determined to be suboptimal; when the average horizontal visibility is not greater than the third altitude, the vertical visibility is determined to be suboptimal. In this case, if the average height of the first cloud base is not greater than the sixth altitude, the vertical visibility is calculated using the average horizontal visibility and the average height of the first cloud base, using the following formula:

[0007] In the formula, VV This represents vertical visibility in meters (m); mod indicates the remainder. This represents the average horizontal visibility. This represents the average height of the first cloud base.

[0008] In the above scheme, the first time is preset to be 5 minutes.

[0009] In the above scheme, the value range of the horizontal visibility array is 10-30000; the value range of the first cloud base height array and the second cloud base height array are 50-7500 and 9999 respectively, where 9999 indicates no clouds.

[0010] In the above scheme, "clear weather" means that the sky is cloudless or there are no clouds that have a significant impact on flight.

[0011] In the above scheme, the sky being obscured by weather phenomena includes sandstorms, high-altitude dust storms, and dust storms.

[0012] In the above scheme, the first height is 10000m; the second height is 4000m; the third height is 1000m; the fourth height is 5000m; the fifth height is 5500m; and the sixth height is 3000m.

[0013] Furthermore, to achieve the above objectives, the present invention also proposes a vertical visibility calculation device for airports, comprising: The acquisition module is used to acquire the horizontal visibility, the first cloud base height and the second cloud base height within the first time period before the current time, to obtain the horizontal visibility array, the first cloud base height array and the second cloud base height array, and to calculate the average value of the horizontal visibility, the average value of the first cloud base height and the average value of the second cloud base height. The first determination module is used to determine that the vertical visibility is good if there is 9999 in the first layer of cloud base height array when the weather is clear. The second determination module is used to calculate the vertical visibility by means of the average value of the horizontal visibility when the sky is obscured by weather phenomena. The third determination module is used to determine the vertical visibility as good when the average horizontal visibility is not less than the first altitude, and as good when the average horizontal visibility is not less than the second altitude and less than the first altitude, under other conditions; when the average horizontal visibility is greater than the third altitude and less than the second altitude, if the average height of the first cloud base is not less than the fourth altitude, the vertical visibility is determined to be poor; if the average height of the first cloud base is not less than the second altitude and the average height of the second cloud base is not less than the fifth altitude, the vertical visibility is determined to be poor; if the average height of the first cloud base is not less than the second altitude and the average height of the second cloud base is less than the fifth altitude, the vertical visibility is determined to be bad; if the average height of the first cloud base is less than the second altitude, the vertical visibility is determined to be bad; when the average horizontal visibility is not greater than the third altitude, the vertical visibility is determined to be bad, and if the average height of the first cloud base is not greater than the sixth altitude, the vertical visibility is calculated using the average horizontal visibility and the average height of the first cloud base.

[0014] Furthermore, to achieve the above objectives, the present invention also proposes a vertical visibility calculation device for airports. The device includes a memory, a processor, and a vertical visibility calculation program for airports stored in the memory and executable on the processor. The program is configured to implement the aforementioned vertical visibility calculation method for airports. Furthermore, to achieve the above objectives, the present invention also proposes a storage medium storing an airport-oriented vertical visibility calculation program, which, when executed by a processor, implements the aforementioned airport-oriented vertical visibility calculation method.

[0015] In summary, compared with the prior art, the above-described technical solutions conceived by this invention can achieve the following beneficial effects: This invention provides a method for calculating vertical visibility at airports, which can quickly and accurately calculate vertical visibility without relying on the subjectivity of the observer. Attached Figure Description

[0016] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings: Figure 1 This is a flowchart illustrating a method for calculating vertical visibility at airports according to Embodiment 1 of the present invention.

[0017] Figure 2 This is a schematic diagram of a vertical visibility calculation device for airports according to Embodiment 2 of the present invention. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention. Furthermore, the technical features involved in the various embodiments of this invention described below can be combined with each other as long as they do not conflict with each other.

[0019] It should be understood that the sequence number of each step in the embodiment does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0020] It should be noted that the executing entity of this application embodiment can be a computing service device with data processing, network communication, and program execution functions, such as a tablet computer, personal computer, or mobile phone, or an electronic device capable of realizing the above functions, such as a vertical visibility calculation device for airports. The following description uses a vertical visibility calculation method and device for airports as an example to illustrate this embodiment and the following embodiments.

[0021] Example 1 This application provides a method for calculating vertical visibility at airports. Please refer to [link to relevant documentation]. Figure 1 , Figure 1 This is a flowchart illustrating a vertical visibility calculation method for airports according to an embodiment of this application. The vertical visibility calculation method for airports according to an embodiment of this application includes: S1: Obtain the horizontal visibility, first cloud base height, and second cloud base height within the first time period before the current time, and obtain the horizontal visibility array, the first cloud base height array, and the second cloud base height array. Calculate the average horizontal visibility, the average first cloud base height, and the average second cloud base height.

[0022] In this embodiment, taking the current time as T0, the horizontal visibility value, the first cloud base height, and the second cloud base height of the airport within the 5-minute period [T0-5min, T0] are obtained and denoted as arrays X, Z, and U, respectively, where X = [x1, x2, x3, ..., xm], Z = [z1, z2, z3, ..., zk], and U = [U1, U2, U3, ..., Uk]. Based on the detection capability of the measuring instrument and GB / T 33703-2017 "Automatic Weather Station Observation Specifications", the value range of X is 10-30000, and the values ​​of Z and U are 50-7500 and 9999, respectively, where 9999 indicates no clouds. The average values ​​of X, Z, and U are calculated and denoted as follows: , and .

[0023] S2, When the weather is clear, if there is 9999 in the first layer of cloud base height array, the vertical visibility is considered good.

[0024] In the embodiments of this application, it can be understood that clear weather means that there are no clouds in the sky or no clouds that have a significant impact on flight. According to the "Civil Aviation Meteorological Ground Observation Specification", if there are no clouds in the sky or no clouds that have a significant impact on flight, and vertical visibility is not restricted, the abbreviation NSC should be used, which means that when there are no clouds in the sky, vertical visibility has almost no impact on the aircraft; when there is 9999 in the first cloud base height array Z, the vertical visibility is determined to be good.

[0025] S3, when the sky is obscured by weather phenomena, calculate the vertical visibility using the average of the horizontal visibility.

[0026] In this embodiment of the application, when the sky is obscured by weather phenomena such as sandstorms, high-altitude dust storms, or dust storms, the impact on vertical visibility is basically the same as that on horizontal visibility. Therefore, vertical visibility is calculated using the average value of horizontal visibility, and the specific calculation formula is as follows:

[0027] In the formula, VV This represents vertical visibility in meters (m); mod indicates the remainder. This represents the average horizontal visibility.

[0028] S4. Under other conditions, when the average horizontal visibility is not less than the first altitude, the vertical visibility is judged as good; when the average horizontal visibility is not less than the second altitude and less than the first altitude, the vertical visibility is judged as fair; when the average horizontal visibility is greater than the third altitude and less than the second altitude, if the average height of the first cloud base is not less than the fourth altitude, the vertical visibility is judged as poor; if the average height of the first cloud base is not less than the second altitude and the average height of the second cloud base is not less than the fifth altitude, the vertical visibility is judged as poor; if the average height of the first cloud base is not less than the second altitude and the average height of the second cloud base is less than the fifth altitude, the vertical visibility is judged as inadequate; if the average height of the first cloud base is less than the second altitude, the vertical visibility is judged as inadequate; when the average horizontal visibility is not greater than the third altitude, the vertical visibility is judged as inadequate. In this case, if the average height of the first cloud base is not greater than the sixth altitude, the vertical visibility is calculated using the average horizontal visibility and the average height of the first cloud base.

[0029] Specifically, in this embodiment of the application, under conditions of clear weather and other situations where the sky is obscured by weather phenomena, vertical visibility is determined according to the following: (1) When the average horizontal visibility For depths ≥10000m, vertical visibility is considered good. (2) When the average horizontal visibility ≥4000m and When the vertical visibility is less than 10,000m, it is considered good. (3) When the average horizontal visibility >1000m and When the altitude is <4000m, if the average height of the first cloud base is... When the vertical visibility is ≥5000m, it is judged as poor; if the average height of the first cloud base is... The average height of the second cloud base is ≥4000m. ≥5500m, vertical visibility is judged as poor; if the average height of the first cloud base is... The average height of the second cloud base is ≥4000m. If the vertical visibility is less than 5500m, it is considered poor; if the average height of the first cloud base is less than 5500m, it is considered poor. When the vertical visibility is less than 4000m, it is judged as poor. (4) When the average horizontal visibility When the vertical visibility is ≤1000m, it is judged as poor; at this time, if the average height of the first cloud base is... Average horizontal visibility at ≤3000m and the average height of the first cloud base The formula for calculating vertical visibility is as follows:

[0030] In the formula, VV This represents vertical visibility in meters (m); mod indicates the remainder. This represents the average horizontal visibility. This represents the average height of the first cloud base.

[0031] According to the "Civil Aviation Meteorological Ground Observation Specifications", when the sky is obscured by weather phenomena and the cloud cover, cloud type and cloud height cannot be determined, the vertical visibility of 600m and below should be determined by visual inspection and instrument measurement on the observation platform or observation field, and reported in the order of 30m. Therefore, in this case, this embodiment provides a specific calculation method for vertical visibility.

[0032] Specifically, in this embodiment, the method of this embodiment was used to calculate vertical visibility at a military airport: the horizontal visibility value, the height of the first cloud base, and the height of the second cloud base were obtained for the airport 5 minutes before the measurement time, and denoted as arrays X, Z, and U, respectively, where X=[17934, 18071, 18286, 18318, 18452], Z=[9999, 9999, 9999, 9999, 9999], and U=[9999, 9999, 9999, 9999, 9999]. =18212.2. Therefore, in this embodiment, the vertical visibility of a certain military airport at the current moment is good.

[0033] In summary, the embodiments of this application provide a method for calculating vertical visibility for airports, which can quickly and accurately calculate vertical visibility.

[0034] Example 2 This application provides a vertical visibility calculation device for airports, such as... Figure 2 As shown, it includes: The acquisition module 10 is used to acquire the horizontal visibility, the first cloud base height and the second cloud base height within the first time period before the current time, to obtain the horizontal visibility array, the first cloud base height array and the second cloud base height array, and to calculate the average horizontal visibility, the average first cloud base height and the average second cloud base height. The first determination module 20 is used to determine that the vertical visibility is good if there is 9999 in the first layer of cloud base height array when the weather is clear. The second determination module 30 is used to calculate the vertical visibility by the average value of the horizontal visibility when the sky is obscured by weather phenomena. The third judgment module 40 is used to determine the vertical visibility as good when the average horizontal visibility is not less than the first altitude, and as good when the average horizontal visibility is not less than the second altitude and less than the first altitude, under other conditions; when the average horizontal visibility is greater than the third altitude and less than the second altitude, if the average height of the first cloud base is not less than the fourth altitude, the vertical visibility is determined as poor; if the average height of the first cloud base is not less than the second altitude and the average height of the second cloud base is not less than the fifth altitude, the vertical visibility is determined as poor; if the average height of the first cloud base is not less than the second altitude and the average height of the second cloud base is less than the fifth altitude, the vertical visibility is determined as bad; if the average height of the first cloud base is less than the second altitude, the vertical visibility is determined as bad; when the average horizontal visibility is not greater than the third altitude, the vertical visibility is determined as bad, and if the average height of the first cloud base is not greater than the sixth altitude, the vertical visibility is calculated using the average horizontal visibility and the average height of the first cloud base.

[0035] Example 3 This application also provides a vertical visibility calculation device for airports, such as a smartphone, tablet, laptop, desktop computer, rack server, blade server, tower server, or cabinet server (including a standalone server or a server cluster consisting of multiple servers) capable of executing programs.

[0036] The vertical visibility calculation device for airports includes, but is not limited to: a memory, a processor, and a vertical visibility calculation program for airports stored in the memory and capable of running on the processor, the vertical visibility calculation program for airports being configured to implement a vertical visibility calculation method for airports.

[0037] In this embodiment, the memory (i.e., the readable storage medium) includes flash memory, hard disk, multimedia card, card-type memory (e.g., SD or DX memory), random access memory (RAM), static random access memory (SRAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), and programmable read-only memory (PROM). The memory can also be an external storage device for the airport-oriented vertical visibility calculation equipment, such as the plug-in hard disk, smart media card (SMC), secure digital (SD) card, flash card, etc., equipped on the device. Of course, the memory can also include both internal storage units and external storage devices of the airport-oriented vertical visibility calculation equipment. In this embodiment, the memory is typically used to store the operating system and various application software installed on the airport-oriented vertical visibility calculation equipment, such as the program code of the airport-oriented vertical visibility calculation device in Embodiment 2. Furthermore, the memory can also be used to temporarily store various types of data that have been output or will be output.

[0038] In some embodiments, the processor may be a central processing unit (CPU), a controller, a microcontroller, a microprocessor, or other data processing chip. This processor is typically used to control the overall operation of the airport-oriented vertical visibility calculation device. In this embodiment, the processor is used to run program code stored in memory or process data, for example, to run the airport-oriented vertical visibility calculation device to implement the airport-oriented vertical visibility calculation method in Embodiment 1.

[0039] Example 4 This application also provides a storage medium, such as flash memory, hard disk, multimedia card, card-type memory (e.g., SD or DX memory), random access memory (RAM), static random access memory (SRAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), programmable read-only memory (PROM), magnetic memory, disk, optical disk, server, app store, etc. This storage medium stores a vertical visibility calculation program for airports. When executed by a processor, this airport-oriented vertical visibility calculation program implements corresponding functions. The storage medium of this embodiment is used in an airport-oriented vertical visibility calculation device, and when executed by a processor, it implements an airport-oriented vertical visibility calculation method.

[0040] It should be noted that, depending on the implementation needs, the various steps described in this application can be broken down into more steps, or two or more steps or parts of the steps can be combined into new steps to achieve the purpose of this invention.

[0041] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A method for calculating vertical visibility at airports, characterized in that, include: Obtain the horizontal visibility, first cloud base height, and second cloud base height within the first time period before the current moment, and obtain the horizontal visibility array, the first cloud base height array, and the second cloud base height array. Calculate the average value of the horizontal visibility, the average value of the first cloud base height, and the average value of the second cloud base height. When the weather is clear, if there is 9999 in the first layer of cloud base height array, the vertical visibility is considered good. When the sky is obscured by weather phenomena, vertical visibility is calculated using the average of the horizontal visibility. The specific calculation formula is as follows: In the formula, VV This represents vertical visibility in meters (m); mod indicates the remainder. This represents the average horizontal visibility. Under other conditions, when the average horizontal visibility is not less than the first altitude, the vertical visibility is determined to be good; when the average horizontal visibility is not less than the second altitude and less than the first altitude, the vertical visibility is determined to be fair; when the average horizontal visibility is greater than the third altitude and less than the second altitude, if the average height of the first cloud base is not less than the fourth altitude, the vertical visibility is determined to be poor; if the average height of the first cloud base is not less than the second altitude and the average height of the second cloud base is not less than the fifth altitude, the vertical visibility is determined to be poor; if the average height of the first cloud base is not less than the second altitude and the average height of the second cloud base is less than the fifth altitude, the vertical visibility is determined to be suboptimal; if the average height of the first cloud base is less than the second altitude, the vertical visibility is determined to be suboptimal; when the average horizontal visibility is not greater than the third altitude, the vertical visibility is determined to be suboptimal. In this case, if the average height of the first cloud base is not greater than the sixth altitude, the vertical visibility is calculated using the average horizontal visibility and the average height of the first cloud base, using the following formula: In the formula, VV This represents vertical visibility in meters (m); mod indicates the remainder. This represents the average horizontal visibility. This represents the average height of the first cloud base; The first altitude is 10,000m; the second altitude is 4,000m; the third altitude is 1,000m; the fourth altitude is 5,000m; the fifth altitude is 5,500m; and the sixth altitude is 3,000m.

2. The method for calculating vertical visibility for airports according to claim 1, characterized in that, The first time interval is 5 minutes.

3. The method for calculating vertical visibility for airports according to claim 1, characterized in that, The value range of the horizontal visibility array is 10-30000; the value range of the first cloud base height array and the second cloud base height array are 50-7500 and 9999 respectively, where 9999 indicates no clouds.

4. The method for calculating vertical visibility for airports according to claim 1, characterized in that, The term "clear weather" means that the sky is cloudless or that there are no clouds that would significantly affect flight.

5. The method for calculating vertical visibility for airports according to claim 1, characterized in that, The sky being obscured by weather phenomena includes sandstorms, high-altitude dust storms, and dust storms.

6. A vertical visibility calculation device for airports, characterized in that, include: The acquisition module is used to acquire the horizontal visibility, the first cloud base height and the second cloud base height within the first time period before the current time, to obtain the horizontal visibility array, the first cloud base height array and the second cloud base height array, and to calculate the average value of the horizontal visibility, the average value of the first cloud base height and the average value of the second cloud base height. The first determination module is used to determine that the vertical visibility is good if there is 9999 in the first layer of cloud base height array when the weather is clear. The second determination module is used to calculate the vertical visibility based on the average horizontal visibility when the sky is obscured by weather phenomena. The specific calculation formula is as follows: In the formula, VV This represents vertical visibility in meters (m); mod indicates the remainder. This represents the average horizontal visibility. The third determination module is used to determine the vertical visibility as good when the average horizontal visibility is not less than the first altitude, and as good when the average horizontal visibility is not less than the second altitude and less than the first altitude, under other conditions; when the average horizontal visibility is greater than the third altitude and less than the second altitude, if the average height of the first cloud base is not less than the fourth altitude, the vertical visibility is determined to be poor; if the average height of the first cloud base is not less than the second altitude and the average height of the second cloud base is not less than the fifth altitude, the vertical visibility is determined to be poor; if the average height of the first cloud base is not less than the second altitude and the average height of the second cloud base is less than the fifth altitude, the vertical visibility is determined to be bad; if the average height of the first cloud base is less than the second altitude, the vertical visibility is determined to be bad; when the average horizontal visibility is not greater than the third altitude, the vertical visibility is determined to be bad, and if the average height of the first cloud base is not greater than the sixth altitude, the vertical visibility is calculated using the average horizontal visibility and the average height of the first cloud base, using the following formula: In the formula, VV This represents vertical visibility in meters (m); mod indicates the remainder. This represents the average horizontal visibility. This represents the average height of the first cloud base; The first altitude is 10,000m; the second altitude is 4,000m; the third altitude is 1,000m; the fourth altitude is 5,000m; the fifth altitude is 5,500m; and the sixth altitude is 3,000m.

7. A vertical visibility calculation device for airports, characterized in that, The airport-oriented vertical visibility calculation device includes: a memory, a processor, and an airport-oriented vertical visibility calculation program stored in the memory and executable on the processor, wherein the airport-oriented vertical visibility calculation program is configured to implement an airport-oriented vertical visibility calculation method as described in any one of claims 1 to 5.

8. A storage medium, characterized in that, The storage medium stores a vertical visibility calculation program for airports, which, when executed by a processor, implements a vertical visibility calculation method for airports as described in any one of claims 1 to 5.

Images