CN103455715B - A kind of weather nephogram section projecting method based on linear interpolation - Google Patents
A kind of weather nephogram section projecting method based on linear interpolation Download PDFInfo
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Abstract
The present invention discloses a kind of weather nephogram section projecting method based on linear interpolation, the echo data matrix of each height layer carries out with the method taking trace of a matrix the projection in East and West direction and north-south, obtains matrix.Every string is carried out linear interpolation again, thus obtains continuous print section projection image sketch map.Present invention is mainly used for air-traffic control automated system, it is achieved weather radar meteorological data shows with the fusion of air traffic situation.
Description
Technical field
The present invention relates to weather radar data for communication processing technology field, especially one utilizes weather radar to realize meteorology
Cloud atlas section projecting method.
Background technology
Aloft during traffic control, weather conditions are important reference elements.Aviation accident and boat
The one of the main reasons that class is delayed is exactly to be restricted in the flight that some bad weather condition is got off the plane.Although machine
Field aid to navigation and aeroplane performance are increasingly advanced, and the restrictive function of flight has been subtracted by disadvantageous meteorological condition
Few, but it is in certain weather conditions and the airport of climatic environment and air route, the weather impact of unfavorable flight is made
The passenger become is detained, flight large area is delayed, along with the increase of flight amount does not significantly reduce.
Cloud is modal a kind of meteorological factor affecting flight, and it is to be become from the Moisture condensation in air
Form, is segmented into cumulus and stratus from cloud in shape.Cumulus extends all the way up from bottom, its end
Portion and surrounding have powerful air-flow, thus flight is unstable in these regions, and the above air-flow of cloud is
Smoothly.In cumulus, major part all contains rain.Endanger bigger cumulonimbus, thunder cloud aircraft should be away from, aircraft one
Denier enters, and is subject to electric shock, makes instrument malfunction, fuel tank explosion, or cause big bump, icing, make behaviour
Vertical malfunctioning, there is aviation accident.Other kinds of cloud mainly affects the visibility of driver to the impact of flight,
The fog precipitation that changed by cloud, thunderstorm, hail all can bring certain impact to flight safety.
Visibility in cloud is very poor, thus the coverage rate to an airport sky medium cloud is flight weather con dition
Important indicator, the coverage rate of sky medium cloud can be divided into 5 grades, cloud on high in ratio less than 1/
10 is the finest, and 1/10～1/2 is referred to as spreading cloud, and 6/10～9/10 is the most cloudy, and more than 9/10 claims
For the moon.In the case of the moon, the height of cloud base is an important indicator, and it refers to the bottom of cloud and ground during cloth cloud layer
The distance in face, determines the weather condition of flight with this.
Aircarrier aircraft, in flight course, is circulated a notice of by ground or airborne weather radar is found shadow in front, air route
After ringing the cloud layer of safety, typically can take to change height or suitably deviate former flight path to carry out rich flying, avoid
This danger cloud layer, however, it should be clear that the air route that aircarrier aircraft aloft flies is to height, width, route
There is strict regulation, deviate this escape way, it is possible to exist and lose contact, get lost and high mountain etc.
The danger that barrier bumps against, thus, once takes corresponding measure still cannot avoid this cloud layer in safety range
In the case of, former flight plan can only be stopped, other airports or make a return voyage of making preparation for dropping, if meteorological department's look-ahead
To air route weather affect flight safety time and when cannot avoid, aircraft will wait on airport and holding after weather takes a turn for the better again
The corresponding flight of row.
In the case of this external the moon, even if control-tower visibility is fine, above airfield runway, land passage proximate height
Spend relatively low cloud layer and also can directly affect aircraft landing, even cause socked-in.The most relatively low cloud layer can make
Pilot does not sees runway at descent, and aircraft is the most also difficult to locate in time after being dropped through low cloud layer
The fortuitous event that reason is likely to occur, directly affects the safety of aircraft.
For that purpose it is necessary to cloud is examined, in order to provide meteorologic information accurately for pilot.Cloud is seen
Examine and be often referred to observe cloud form, cloud amount and the cloud level, including the position of cloud layer, scope, intensity etc..
At present, mainly having two kinds of approach to the detection of cloud atlas, a kind of is by once or the gas of secondary air traffic control radar
As passage, another kind is by special weather radar such as Doppler radar.
Existing air traffic control automation system, it is common that gather, analyze once or the Weather Channel of secondary air traffic control radar
Conveying gas image information forms the MAX data of cloud atlas and shows the background at battle state display with the form of filled polygon
Map layer, or individually show cloud atlas state by special meteorological monitoring system.
Existing air traffic control automation system, uses MAX data display cloud atlas can only provide in the coverage rate of cloud
One reference, cannot obtain height of cloud base data by this projection.It simply show cloud atlas horizontal level
And the display of cloud atlas grade, and the cloud atlas level condition being beyond expression out on each height layer.
Using meteorological monitoring system to observe cloud atlas situation, it is a lot of unfavorable to there is also in the routine work of controller
Part.Due to cloud atlas and situation split screen display available, when the weather condition checked on air route, need to pass through longitude and latitude
Meteorological monitoring system display interface positions, adds unnecessary workload.
Therefore, need a kind of new technical scheme to solve the problems referred to above.
Summary of the invention
It is an object of the present invention to provide a kind of based on linear interpolation meteorological cloud observed the most intuitively and be easily achieved
Figure section projecting method.
For achieving the above object, present invention weather nephogram based on linear interpolation section projecting method can use
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 the early stage of original radar data is processed, obtain radar
In the cloud atlas level data of multiple height layers, each height layer is with fixed value as vertical separation；Wherein, with one
The expression matrix of PIX × PIX goes out cloud atlas level data, and the value of matrix element represents the grade of cloud atlas, if ginseng
Number n represents the n-th height layer of cloud atlas；
(2), the projection of each height layer cloud atlas data section and integration: take each height layer matrix trace, by diagonal element
Element is arranged in order, and obtains an one-dimension array containing PIX lattice element.Data to each height layer respectively
After completing this conversion, it is arranged in order from high to low by high order, obtains the matrix of a n × PIX；
(3), linear interpolation, formed section projected pixel matrix: use linear interpolation mode to n × PIX
Each row of matrix carry out linear interpolation, and the degree of accuracy of needs is incoming by the form of static parameter INSERT；First
First calculate the data needing to insert several height layer between each two adjacent height layer, thus high with reference to the two
The value difference of degree layer is often increased the change step of a height layer level value, carries out afterwards one time 0 arriving
The circulation of INSERT, which two height layer is the data just understanding each height layer be between in n-layer data,
Belong to which inserted value between the two height layer, finally combine step-length and just can obtain the data of this height layer
Numerical value；The most just obtained INSERT data after completing circulation, completed single-row linear interpolation, depend on
The secondary linear interpolation completing each row, has just obtained the INSERT × PIX section projection matrix needed；
(4), drawing is exported by display module.
Compared with background technology, present invention weather nephogram based on linear interpolation section projecting method has the most excellent
Point:
More fully show cloud atlas information by the mode of avatars, simple and clear.Not only include cloud
Map combining scope and grade show, also include the level data of each height layer, it is convenient to observe simultaneously
The data such as cloud is high in distribution situation and the cloud base of each height layer, cloud top is high.
With air traffic control automation system air traffic situation, weather nephogram is merged display, and more convenient controller observes respectively
Individual flight weather condition in its whole air route, for the control decision-making of controller provide reliable and effective meteorological because of
Element.Controller is especially facilitated to observe the deep or light grade of cloud atlas of each height layer in certain and specified point, for implementing to adjust
Degree commander provide foundation.
Should section projecting method based on linear interpolation, simple and be easily achieved, meeting air traffic control pair
On the premise of the precise requirements of cloud atlas information, just can be obtained by minimum amount of calculation and relatively low computation complexity
To preferable result, algorithm stability is preferable.
Accompanying drawing explanation
Fig. 1 is the flow chart of present invention weather nephogram based on linear interpolation section projecting method.
Detailed description of the invention
Below in conjunction with the accompanying drawings and specific embodiment, it is further elucidated with the present invention, it should be understood that these embodiments are only used for
The present invention is described rather than limits the scope of the present invention, after having read the present invention, those skilled in the art
Amendment to the various equivalent form of values of the present invention all falls within the application claims limited range.
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 the early stage of original radar data is processed, obtain radar
In the cloud atlas level data of multiple height layers, each height layer is with fixed value as vertical separation；Wherein, with one
The expression matrix of PIX × PIX goes out cloud atlas level data, and the value of matrix element represents the grade of cloud atlas, if ginseng
Number n represents the n-th height layer of cloud atlas；In the present embodiment, described radar uses Doppler radar.
(2), the projection of each height layer cloud atlas data section and integration: take each height layer matrix trace, by diagonal element
Element is arranged in order, and obtains an one-dimension array containing PIX lattice element.Data to each height layer respectively
After completing this conversion, it is arranged in order from high to low by high order, obtains the matrix of a n × PIX.
(3), linear interpolation, formed section projected pixel matrix: use linear interpolation mode to n × PIX
Each row of matrix carry out linear interpolation, and the degree of accuracy of needs is incoming by the form of static parameter INSERT；First
First calculate the data needing to insert several height layer between each two adjacent height layer, thus high with reference to the two
The value difference of degree layer is often increased the change step of a height layer level value, carries out afterwards one time 0 arriving
The circulation of INSERT, which two height layer is the data just understanding each height layer be between in n-layer data,
Belong to which inserted value between the two height layer, finally combine step-length and just can obtain the data of this height layer
Numerical value；The most just obtained INSERT data after completing circulation, completed single-row linear interpolation, depend on
The secondary linear interpolation completing each row, has just obtained the INSERT × PIX section projection matrix needed.
(4), drawing is exported by display module.Wherein, the projection matrix write file that will obtain, work as number
The projection of file profile drawing is read according to sending message informing air traffic control automation system client display module when updating
Image.
Claims (3)
1. a weather nephogram section projecting method based on linear interpolation, it is characterised in that include following step
Rapid:
(1), each height layer cloud atlas data acquisition: by the early stage of original radar data is processed, obtain radar
In the cloud atlas level data of multiple height layers, each height layer is with fixed value as vertical separation；Wherein, with one
The expression matrix of PIX × PIX goes out cloud atlas level data, and the value of matrix element represents the grade of cloud atlas, if ginseng
Number n represents the n-th height layer of cloud atlas；
(2), the projection of each height layer cloud atlas data section and integration: take each height layer matrix trace, by diagonal element
Element is arranged in order, and obtains an one-dimension array containing PIX lattice element；Data to each height layer respectively
After completing this conversion, it is arranged in order from high to low by high order, obtains the matrix of a n × PIX；
(3), linear interpolation, formed section projected pixel matrix: use linear interpolation mode to n × PIX
Each row of matrix carry out linear interpolation, and the degree of accuracy of needs is incoming by the form of static parameter INSERT；First
First calculate the data needing to insert several height layer between each two adjacent height layer, thus high with reference to the two
The value difference of degree layer is often increased the change step of a height layer level value, carries out afterwards one time 0 arriving
The circulation of INSERT, which two height layer is the data just understanding each height layer be between in n-layer data,
Belong to which inserted value between the two height layer, finally combine step-length and just can obtain the data of this height layer
Numerical value；The most just obtained INSERT data after completing circulation, completed single-row linear interpolation, depend on
The secondary linear interpolation completing each row, has just obtained the INSERT × PIX section projection matrix needed；
(4), drawing is exported by display module.
Weather nephogram section projecting method based on linear interpolation the most according to claim 1, its feature
It is: in step (4) that the projection matrix write file that will obtain sends message informing when data update
Air traffic control automation system client display module reads file profile drawing projection picture.
Weather nephogram section projecting method based on linear interpolation the most according to claim 1, its feature exists
In: described radar uses Doppler radar.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310371385.8A CN103455715B (en) | 2013-08-22 | A kind of weather nephogram section projecting method based on linear interpolation |
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| CN201310371385.8A CN103455715B (en) | 2013-08-22 | A kind of weather nephogram section projecting method based on linear interpolation |
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| CN103455715A CN103455715A (en) | 2013-12-18 |
| CN103455715B true CN103455715B (en) | 2016-11-30 |
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