CN103455715A - Linear-interpolation-based cloud image profile projection method - Google Patents
Linear-interpolation-based cloud image profile projection method Download PDFInfo
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Abstract
The invention discloses a linear-interpolation-based cloud image profile projection method. The method comprises the following steps of performing east-west and south-north projection on an echo data matrix of each flight level in a matrix trace extraction way to obtain a matrix; performing linear interpolation on each column to obtain a continuous profile projection pixel map. The method is mainly used for an automatic air traffic control system for an airport, and the meteorological data of a weather radar and an air traffic situation are fused for display.
Description
Technical field
The present invention relates to the weather radar data for communication processing technology field, especially a kind of weather radar that utilizes is realized weather nephogram section projecting method.
Background technology
In the process of traffic control aloft, weather conditions be one important in element.Aircraft accident and delayed one of the main reasons are exactly that the flight of getting off the plane at some bad weather condition is restricted.Although voyage aid of the airport facility and aeroplane performance are more and more advanced, disadvantageous meteorological condition reduces to some extent to the restrictive function of flight, but the airport in certain weather conditions and climatic environment and air route, the passenger that the weather effect of unfavorable flight causes is detained, the flight large tracts of land is incured loss through delay, along with the not obviously minimizing of increase of flight amount.
Cloud is modal a kind of meteorologic factor that affects flight, and it is the visible form be condensed into by airborne aqueous vapor, from cloud in shape, can be divided into cumulus and stratus.Cumulus is always upwardly extending from bottom, its bottom and powerful air-flow is arranged on every side, thereby be unsettled in these zone flights, and the top air-flow of cloud is stably.In cumulus, major part all contains rain.Endanger larger cumulonimbus, thunder cloud aircraft should away from, once aircraft enters, be subject to electric shock, make instrument malfunction, fuel tank explosion, or cause big bump, freeze, make disabledly, and aircraft accident occurs.The cloud of other types is mainly the visibility that affects the driver on the impact of flight, and the fog precipitation changed by cloud, thunderstorm, hail all can bring certain impact to flight safety.
Visibility in cloud is very poor, thereby be the important indicator of flight weather con dition to the coverage rate of an airport sky medium cloud, the coverage rate of sky medium cloud can be divided into 5 grades, the ratio of cloud on high is called fine lower than 1/10,1/10～1/2 is called the distribution cloud, 6/10～9/10 is called cloudyly, is called the moon more than 9/10.In the situation that cloudy, the height of cloud base is an important indicator, and the distance on the bottom of cloud and ground when it refers to the cloth cloud layer is determined the weather condition of flight with this.
Aircarrier aircraft is in flight course, by ground, circulate a notice of, or airborne weather radar is after the safe cloud layer of impact is found in the place ahead, air route, generally can take to change height, or suitably depart from former flight path and have mercy on and fly, avoid this danger cloud layer, but will be clear that, the air route that aircarrier aircraft aloft flies is to height, width, route has strict regulation, depart from this escape way, just likely exist and lose contact, get lost, the danger of bumping against with the barrier such as high mountain, thus, once still can't avoid this cloud layer in the situation that take corresponding measure in safe range, can only end former flight planning, make preparation for dropping other airports or make a return voyage, if meteorological department's look-ahead is during to air route weather effect flight safety and can't avoid the time, aircraft will be waited for after weather takes a turn for the better and carry out corresponding flight again on airport.
In the situation of this external the moon, even control-tower visibility is fine, near airfield runway top, landing passage, highly lower cloud layer also can directly affect aircraft landing, even causes socked-in.Highly lower cloud layer can make the pilot not see runway in the landing process, and aircraft descends through after low cloud layer, overhead too closely also being difficult to the fortuitous event that timely processing may occur, directly affects the safety of aircraft.
, must be examined cloud, in order to provide meteorologic information accurately for the pilot for this reason.Cloud is observed to be often referred to and observe cloud form, cloud amount and the cloud level, comprise the position, scope, intensity of cloud layer etc.
At present, the detection of cloud atlas is mainly contained to two kinds of approach, a kind of is by once or the Weather Channel of secondary air traffic control radar, and another kind is as Doppler radar by special weather radar.
Existing air traffic control automation system, normally gather, analyze once or MAX data that the Weather Channel conveying gas image information of secondary air traffic control radar forms cloud atlas are presented at the form of filled polygon the background map figure layer that situation shows, or show separately the cloud atlas state by special meteorological surveillance.
Existing air traffic control automation system, adopt the MAX data to show that cloud atlas can only provide a reference on the coverage rate of cloud, by this perspective view, can't obtain height of cloud base data.It has only provided the demonstration of cloud atlas horizontal level and cloud atlas grade, and the cloud atlas grade situation on each height layer that is beyond expression out.
Adopt meteorological surveillance to observe the cloud atlas situation, also have a lot of disadvantages in controller's routine work.Because cloud atlas and situation split screen show, during weather condition on checking air route, need on meteorological surveillance display interface, position by longitude and latitude, increased unnecessary workload.
Therefore, need a kind of new technical scheme to address the above problem.
Summary of the invention
The object of the invention is to provide a kind of weather nephogram section projecting method based on linear interpolation of observing intuitively convenient and being easy to realization.
For achieving the above object, the weather nephogram section projecting method that the present invention is based on linear interpolation can adopt following technical scheme:
A kind of weather nephogram section projecting method based on linear interpolation comprises the following steps:
(1), each height layer cloud atlas data acquisition: by processing the early stage to original radar data, obtain the cloud atlas level data of radar at a plurality of height layers, each height layer be take fixed value as vertical separation; Wherein, with the expression matrix of a PIX * PIX, go out the cloud atlas level data, the value of matrix element has represented the grade of cloud atlas, and setting parameter n represents n height layer of cloud atlas;
(2), each section projection of height layer cloud atlas data and integration: get each height layer matrix trace, diagonal element is arranged in order, obtain an one-dimension array that contains PIX lattice element.After respectively the data of each height layer being completed this and convert, by the height order, be arranged in order from high to low, obtain the matrix of a n * PIX;
(3), linear difference, form section projected pixel matrix: the mode that adopts linear interpolation is carried out linear interpolation to each row of n * PIX matrix, and the degree of accuracy needed is imported into by the form of static parameter INSERT; At first calculate and need between every two adjacent height layers, insert the data of several height layers, thereby obtain the change step of a height layer grade numerical value of every increase with reference to the value difference of these two height layers, carry out afterwards one time 0 circulation to INSERT, just the data of known each height layer in the n layer data between any two height layers, belong to which the insertion value between these two height layers, finally in conjunction with step-length, just can obtain the numerical value of this point; Also just obtain INSERT data after completing circulation, completed single-row linear interpolation, completed successively the linear interpolation of each row, just obtained the INSERT needed * PIX section projection matrix;
(4), by display module, export drawing.
With background technology, compare, the weather nephogram section projecting method that the present invention is based on linear interpolation has following advantage:
Demonstrated cloud atlas information by the mode of avatars more all sidedly, simple and clear.Not only comprised that cloud atlas coverage and grade show, also comprised the level data of each height layer simultaneously, can observe easily cloud in data such as the distribution situation of each height layer and Gao, cloud top, cloud base height.
Weather nephogram and air traffic control automation system air traffic situation are merged and shows, more convenient controller observes the weather condition of each flight in its whole air route, for controller's control decision-making provides reliable and effective meteorologic factor.Especially the deep or light grade of cloud atlas that facilitates the controller to observe each height layer on certain and specified point, provide foundation for implementing dispatch control.
Be somebody's turn to do the section projecting method based on linear interpolation, simple and be easy to realize, meeting under the prerequisite of air traffic control to the degree of accuracy requirement of cloud atlas information, just can obtain desirable result by minimum calculated amount and lower computation complexity, algorithm stability is better.
The accompanying drawing explanation
Fig. 1 is the process flow diagram that the present invention is based on the weather nephogram section projecting method of linear interpolation.
Embodiment
Below in conjunction with the drawings and specific embodiments, further illustrate the present invention, should understand these embodiment only is not used in and limits the scope of the invention for the present invention is described, after having read the present invention, those skilled in the art all fall within the application's claims limited range to the modification of the various equivalent form of values of the present invention.
The present invention discloses a kind of weather nephogram section projecting method based on linear interpolation, comprises the following steps:
(1), each height layer cloud atlas data acquisition: by processing the early stage to original radar data, obtain the cloud atlas level data of radar at a plurality of height layers, each height layer be take fixed value as vertical separation; Wherein, with the expression matrix of a PIX * PIX, go out the cloud atlas level data, the value of matrix element has represented the grade of cloud atlas, and setting parameter n represents n height layer of cloud atlas; In the present embodiment, described radar adopts radar Doppler.
(2), each section projection of height layer cloud atlas data and integration: get each height layer matrix trace, diagonal element is arranged in order, obtain an one-dimension array that contains PIX lattice element.After respectively the data of each height layer being completed this and convert, by the height order, be arranged in order from high to low, obtain the matrix of a n * PIX.
(3), linear difference, form section projected pixel matrix: the mode that adopts linear interpolation is carried out linear interpolation to each row of n * PIX matrix, and the degree of accuracy needed is imported into by the form of static parameter INSERT; At first calculate and need between every two adjacent height layers, insert the data of several height layers, thereby obtain the change step of a height layer grade numerical value of every increase with reference to the value difference of these two height layers, carry out afterwards one time 0 circulation to INSERT, just the data of known each height layer in the n layer data between any two height layers, belong to which the insertion value between these two height layers, finally in conjunction with step-length, just can obtain the numerical value of this point; Also just obtain INSERT data after completing circulation, completed single-row linear interpolation, completed successively the linear interpolation of each row, just obtained the INSERT needed * PIX section projection matrix.
(4), by display module, export drawing.Wherein, by the projection matrix writing in files obtained, send message informing air traffic control automation system client display module file reading profile drawing projected image when Data Update.
Claims (3)
1. the weather nephogram section projecting method based on linear interpolation, is characterized in that, comprises the following steps:
(1), each height layer cloud atlas data acquisition: by processing the early stage to original radar data, obtain the cloud atlas level data of radar at a plurality of height layers, each height layer be take fixed value as vertical separation; Wherein, with the expression matrix of a PIX * PIX, go out the cloud atlas level data, the value of matrix element has represented the grade of cloud atlas, and setting parameter n represents n height layer of cloud atlas;
(2), each section projection of height layer cloud atlas data and integration: get each height layer matrix trace, diagonal element is arranged in order, obtain an one-dimension array that contains PIX lattice element.After respectively the data of each height layer being completed this and convert, by the height order, be arranged in order from high to low, obtain the matrix of a n * PIX;
(3), linear difference, form section projected pixel matrix: the mode that adopts linear interpolation is carried out linear interpolation to each row of n * PIX matrix, and the degree of accuracy needed is imported into by the form of static parameter INSERT; At first calculate and need between every two adjacent height layers, insert the data of several height layers, thereby obtain the change step of a height layer grade numerical value of every increase with reference to the value difference of these two height layers, carry out afterwards one time 0 circulation to INSERT, just the data of known each height layer in the n layer data between any two height layers, belong to which the insertion value between these two height layers, finally in conjunction with step-length, just can obtain the numerical value of this point; Also just obtain INSERT data after completing circulation, completed single-row linear interpolation, completed successively the linear interpolation of each row, just obtained the INSERT needed * PIX section projection matrix;
(4), by display module, export drawing.
2. the weather nephogram section projecting method based on linear interpolation according to claim 1, it is characterized in that: in step (4), by the projection matrix writing in files obtained, send message informing air traffic control automation system client display module file reading profile drawing projected image when Data Update.
3. the weather nephogram section projecting method based on linear interpolation according to claim 1, is characterized in that: described radar employing radar Doppler.
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| CN108470319A (en) * | 2018-01-31 | 2018-08-31 | 天津大学 | Method based on convergence face three-dimensional reconstruction estimation Your Majesty liter/down draft speed |
| CN110288856A (en) * | 2019-06-21 | 2019-09-27 | 中国民用航空总局第二研究所 | The Scheduled Flight monitoring system and method for fine forecast based on wind |
| CN110764090A (en) * | 2019-10-22 | 2020-02-07 | 上海眼控科技股份有限公司 | Image processing method, image processing device, computer equipment and readable storage medium |
| CN111759216A (en) * | 2020-03-19 | 2020-10-13 | 广东蓝水花智能电子有限公司 | Automatic door opening and closing control method |
| CN112562419A (en) * | 2020-11-03 | 2021-03-26 | 南京航空航天大学 | Off-line multi-target tracking-based weather avoidance zone setting method |
| CN114842678A (en) * | 2022-03-28 | 2022-08-02 | 中国民用航空中南地区空中交通管理局广西分局 | Similar daily measurement system for civil aviation control operation site |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108470319A (en) * | 2018-01-31 | 2018-08-31 | 天津大学 | Method based on convergence face three-dimensional reconstruction estimation Your Majesty liter/down draft speed |
| CN108470319B (en) * | 2018-01-31 | 2021-11-12 | 天津大学 | Method for estimating main ascending/descending airflow speed based on convergence surface three-dimensional reconstruction |
| CN110288856A (en) * | 2019-06-21 | 2019-09-27 | 中国民用航空总局第二研究所 | The Scheduled Flight monitoring system and method for fine forecast based on wind |
| CN110764090A (en) * | 2019-10-22 | 2020-02-07 | 上海眼控科技股份有限公司 | Image processing method, image processing device, computer equipment and readable storage medium |
| CN111759216A (en) * | 2020-03-19 | 2020-10-13 | 广东蓝水花智能电子有限公司 | Automatic door opening and closing control method |
| CN112562419A (en) * | 2020-11-03 | 2021-03-26 | 南京航空航天大学 | Off-line multi-target tracking-based weather avoidance zone setting method |
| CN112562419B (en) * | 2020-11-03 | 2022-04-08 | 南京航空航天大学 | Off-line multi-target tracking-based weather avoidance zone setting method |
| CN114842678A (en) * | 2022-03-28 | 2022-08-02 | 中国民用航空中南地区空中交通管理局广西分局 | Similar daily measurement system for civil aviation control operation site |
| CN114842678B (en) * | 2022-03-28 | 2024-04-26 | 中国民用航空中南地区空中交通管理局广西分局 | Civil aviation control operation site similarity daily measurement system |
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