CN110441767A - The measurement method and system of power transmission line corridor screen of trees head room - Google Patents
The measurement method and system of power transmission line corridor screen of trees head room Download PDFInfo
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- 230000005611 electricity Effects 0.000 claims abstract description 42
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- 230000010287 polarization Effects 0.000 claims description 19
- 241001347978 Major minor Species 0.000 claims description 3
- 230000001427 coherent effect Effects 0.000 claims description 3
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- 239000000463 material Substances 0.000 abstract description 2
- 238000005259 measurement Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/88—Radar or analogous systems specially adapted for specific applications
- G01S13/89—Radar or analogous systems specially adapted for specific applications for mapping or imaging
- G01S13/90—Radar or analogous systems specially adapted for specific applications for mapping or imaging using synthetic aperture techniques, e.g. synthetic aperture radar [SAR] techniques
- G01S13/904—SAR modes
- G01S13/9076—Polarimetric features in SAR
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/88—Radar or analogous systems specially adapted for specific applications
- G01S13/882—Radar or analogous systems specially adapted for specific applications for altimeters
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/88—Radar or analogous systems specially adapted for specific applications
- G01S13/89—Radar or analogous systems specially adapted for specific applications for mapping or imaging
- G01S13/90—Radar or analogous systems specially adapted for specific applications for mapping or imaging using synthetic aperture techniques, e.g. synthetic aperture radar [SAR] techniques
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/88—Radar or analogous systems specially adapted for specific applications
- G01S13/89—Radar or analogous systems specially adapted for specific applications for mapping or imaging
- G01S13/90—Radar or analogous systems specially adapted for specific applications for mapping or imaging using synthetic aperture techniques, e.g. synthetic aperture radar [SAR] techniques
- G01S13/9021—SAR image post-processing techniques
- G01S13/9023—SAR image post-processing techniques combined with interferometric techniques
Abstract
This application discloses the measurement methods and system of a kind of power transmission line corridor screen of trees head room, this method comprises: using the imaged image of Synthetic Aperture Radar satellite shooting power transmission line corridor, and by imaged image real-time Transmission to grounded receiving station；The imaged image received is passed through cloud platform real-time Transmission to application server by grounded receiving station；According to the imaged image, the altitude data of screen of trees is calculated in application server, and generates polar plot, and polar plot includes the geographical coordinate position of altitude data and screen of trees；The status data of transmission line of electricity in power grid is directed into polar plot；According to polar plot, the difference in height of computing electric power line height and screen of trees obtains the free height angle value of power transmission line corridor screen of trees.The application avoids power failure or operation of ascending a height, and without putting into a large amount of manpower and material resources, the power transmission line corridor that can get large area in real time influences image, can precisely, timely get the free height angle value of the power transmission line corridor screen of trees of large area.
Description
Technical field
This application involves power system transmission line technical field more particularly to a kind of power transmission line corridor screen of trees free height
The measurement method and system of degree.
Background technique
Power transmission line corridor refers to along high ammonia syrings side conducting wire, to below the route of two sides stretching, extension defined width
Belt-like zone.In the belt-like zone, it is possible to the trees of security risk be caused to be referred to as screen of trees.If the conducting wire in transmission line of electricity
The distance between screen of trees is less than minimum safe distance, and it will cause the short circuits of transmission line of electricity, and then cause to trip, and lead to not
Normal power supply.Also, transmission line of electricity also suffers from the influence of Changes in weather, the trees in thunderstorm weather, near transmission line of electricity
It will appear phenomena such as electric leakage is conductive in the rain, causing route that short circuit occurs, or cause greatly to the life security of people and animal
It threatens.Therefore, in Maintenance of Electric Transmission Line, the measurement of the head room of power transmission line corridor screen of trees is essential.
Currently, the measurement method of power transmission line corridor screen of trees, mainly include the following types: first, ocular estimate, this method relies on
The intuition and experience of tour personnel directly judges tree height, the headroom information of trees using range estimation.Second, unmanned plane mensuration should
Method carries range unit by unmanned plane and flies to trees overhead, and in the position hovering flight contour with aerial condutor, leads to
The vertical range of range unit measurement unmanned plane and lower section trees is crossed, referring to Fig. 1, which is the h in figure.Third,
Cabling hanging rope mensuration, in interruption maintenance, personnel stand on conducting wire, above screen of trees hidden danger, are carried out using pendency rope net
Sky measurement, while ground staff cooperates check and correction rope position.
In the measurement method of above-mentioned power transmission line corridor screen of trees, in ocular estimate, due to only rely on tour personnel intuition and
Experience, direct eye estimate go out the height of trees, and the altitude information accuracy estimated is not high, so that screen of trees head room is surveyed
The inaccuracy of amount.In unmanned plane mensuration, unmanned plane is limited by battery, each time can be for power transmission line corridor
Screen of trees measurement range is limited, and needs the unmanned plane operator of profession, so that working efficiency is low.The measurement of cabling hanging rope
In method, since people station is on conducting wire, weight can make conducting wire generate certain deformation, increase its arc sag, thus measure headroom
Height can be less than normal, so that the inaccuracy of screen of trees head room measurement.
Summary of the invention
This application provides the measurement methods and system of a kind of power transmission line corridor screen of trees head room, to solve existing skill
The technical issues of screen of trees head room in power transmission line corridor can not efficiently, be accurately measured in art.
In order to solve the above-mentioned technical problem, the embodiment of the present application discloses following technical solution:
In a first aspect, the embodiment of the present application discloses a kind of measurement method of power transmission line corridor screen of trees head room, institute
The method of stating includes:
Using the imaged image of Synthetic Aperture Radar satellite shooting power transmission line corridor, and the imaged image is passed in real time
Transport to grounded receiving station；
The imaged image received is passed through cloud platform real-time Transmission to application server by the grounded receiving station；
According to the imaged image, the altitude data of screen of trees is calculated in the application server, and generates polar plot, institute
State the geographical coordinate position that polar plot includes the altitude data and the screen of trees；
The status data of transmission line of electricity in power grid is directed into the polar plot, wherein the status data includes: defeated
Electric pole tower position, transmission line of electricity height, corresponding transmission tower and transmission line of electricity geographical coordinate position；
According to the polar plot, the difference in height of computing electric power line height and the screen of trees obtains power transmission line corridor tree
The free height angle value of barrier, wherein the free height angle value includes the shortest distance and azimuth information of screen of trees and transmission line of electricity.
Optionally, described to utilize synthetic aperture thunder in the measurement method of above-mentioned power transmission line corridor screen of trees head room
Up to the imaged image of satellite shooting power transmission line corridor, comprising:
Using Synthetic Aperture Radar satellite respectively to screen of trees and ground launch electromagnetic wave signal, and it is anti-to generate electromagnetic wave interference
Penetrate signal；
The electromagnetic wave interference is received by major-minor antenna and reflects signal, and obtains the imaged image.
Optionally, in the measurement method of above-mentioned power transmission line corridor screen of trees head room, in the conjunction that the utilization is passed by
At aperture radar satellite respectively to before screen of trees and ground launch electromagnetic wave signal, the method also includes: collect the conjunction passed by
At the orbit information of aperture radar satellite, transit time；
Optionally, described by the imaged image in the measurement method of above-mentioned power transmission line corridor screen of trees head room
Real-time Transmission is to grounded receiving station, comprising:
When the Synthetic Aperture Radar satellite passed by passes through the grounded receiving station, imaged image is transmitted to nearest ground
Face receiving station.
Optionally, described according to the striograph in the measurement method of above-mentioned power transmission line corridor screen of trees head room
The altitude data of screen of trees is calculated in picture, the application server, comprising:
The application server On-premise calculates the grid DEM formula of screen of trees, and calculation formula is as follows:
In formula, hvFor the elevation of screen of trees,It is dry for volume scattering complex phase corresponding with vegetation hat volume scattering vector；For with
The corresponding earth's surface scattering complex phase of earth's surface Scattering of Vector is dry；For Effective wave number, θ is incidence angle, is used for phase difference
Be converted to vertical height, wvFor HV Polarization scattering, wsFor HH-VV Polarization scattering；
It is as follows according to RVoG scattering model and with surveying multiple coherent calculation phase, calculation formula:
In formula,For ground phase, For
Effective body radiates ratio, and For effective surface radiation ratio, and, 0 < Lws<1；
The elevation inverting of screen of trees is carried out according to described ground phase, calculation formula is as follows:
Optionally, in the measurement method of above-mentioned power transmission line corridor screen of trees head room, the synthetic aperture radar is defended
Star includes HH, VV, HV, VH imaging polarization mode.
Optionally, in the measurement method of above-mentioned power transmission line corridor screen of trees head room, according to different Polarization scatterings
Mechanism, the Synthetic Aperture Radar satellite obtain different polarization interference phases, and the polarization interference phase includes: HH interference phase
Position, HV interferometric phase, VV interferometric phase, HH-VV interferometric phase and HH+VV interferometric phase.
Optionally, in the measurement method of above-mentioned power transmission line corridor screen of trees head room, the number of the grounded receiving station
It is more than or equal to Tbps grades according to receiving velocity.
Second aspect, the embodiment of the present application disclose a kind of measuring system of power transmission line corridor screen of trees head room, institute
The system of stating includes:
Image collecting module, for the imaged image using Synthetic Aperture Radar satellite shooting power transmission line corridor, and will
The imaged image real-time Transmission is to grounded receiving station；
Image acquiring module is passed the imaged image received by cloud platform for the grounded receiving station in real time
Transport to application server；
Screen of trees information computational module, for according to the imaged image, the height of screen of trees to be calculated in the application server
Number of passes evidence, and polar plot is generated, the polar plot includes the geographical coordinate position of the altitude data and the screen of trees；
Line information computing module, for the status data of transmission line of electricity in power grid to be directed into the polar plot,
In, the status data includes: transmission tower position, transmission line of electricity height, corresponding transmission tower and transmission line of electricity ground
Manage coordinate position；
Head room module, for according to the polar plot, the difference in height of computing electric power line height and the screen of trees to be obtained
To the free height angle value of power transmission line corridor screen of trees, wherein the free height angle value includes the most short distance of screen of trees and transmission line of electricity
From and azimuth information.
Compared with prior art, the application has the beneficial effect that
This application provides the measurement methods and system of a kind of power transmission line corridor screen of trees head room, in the method,
Using the imaged image of Synthetic Aperture Radar satellite shooting power transmission line corridor, and by the imaged image real-time Transmission to ground
Receiving station；The imaged image received is passed through cloud platform real-time Transmission to application server by the grounded receiving station；Root
According to the imaged image, the altitude data of screen of trees is calculated in the application server, and generates polar plot, the polar plot packet
Include the geographical coordinate position of the altitude data and the screen of trees；The status data of transmission line of electricity in power grid is directed into the arrow
In spirogram, wherein the status data includes: transmission tower position, transmission line of electricity height, corresponding transmission tower and defeated
The geographical coordinate position of electric line；According to the polar plot, the difference in height of computing electric power line height and the screen of trees is obtained defeated
The free height angle value of electric line corridor screen of trees, wherein the free height angle value include the shortest distance of screen of trees and transmission line of electricity with
And azimuth information.Measurement method in the application avoids power failure or operation of ascending a height, without putting into a large amount of manpower object
Power greatly reduces the labor intensity of worker, can get the transmission of electricity of large area in real time by Synthetic Aperture Radar satellite
Line corridor, which influences image, can precisely, timely get the power transmission line of large area by the calculation processing of application server
The free height angle value of road corridor screen of trees, while improving transmission line safety service ability.
It should be understood that above general description and following detailed description be only it is exemplary and explanatory, not
The application can be limited.
Detailed description of the invention
In order to illustrate more clearly of the technical solution of the application, letter will be made to attached drawing needed in the embodiment below
Singly introduce, it should be apparent that, for those of ordinary skills, without creative efforts, also
Other drawings may be obtained according to these drawings without any creative labor.
Fig. 1 is that power transmission line corridor screen of trees provided in an embodiment of the present invention hinders head room schematic diagram；
Fig. 2 is a kind of applied field of the measurement method of power transmission line corridor screen of trees head room provided in an embodiment of the present invention
Jing Tu；
Fig. 3 is that a kind of process of the measurement method of power transmission line corridor screen of trees head room provided in an embodiment of the present invention is shown
It is intended to；
Description of symbols: 1, screen of trees；2, transmission line of electricity；3, shaft tower；4, Synthetic Aperture Radar satellite；5, ground receiver
It stands；6, application server.
Specific embodiment
In order to make those skilled in the art better understand the technical solutions in the application, below in conjunction with the application reality
The attached drawing in example is applied, the technical scheme in the embodiment of the application is clearly and completely described, it is clear that described implementation
Example is only some embodiments of the present application, rather than whole embodiments.Based on the embodiment in the application, the common skill in this field
The application protection all should belong in art personnel every other embodiment obtained without making creative work
Range.
The measurement method of power transmission line corridor screen of trees head room in the application is based on polarization SAR interference technique, referring to
Fig. 2 is a kind of application scenario diagram of the measurement method of power transmission line corridor screen of trees head room provided in an embodiment of the present invention.Knot
Close Fig. 2, usually there are some screens of trees 1 in the underface of the transmission line of electricity 2 between certain shaft towers 3, screen of trees 1 and transmission line of electricity 2 it
Between distance should be less than minimum safe distance.In the application, 2 corridor of transmission line of electricity is obtained by Synthetic Aperture Radar satellite 4
Imaged image, and be transmitted to grounded receiving station 5,5 communication connection of grounded receiving station passes through application service in application server 6
Power transmission line corridor screen of trees head room is calculated in the processing of device 6.
It is a kind of measurement method of power transmission line corridor screen of trees head room provided in an embodiment of the present invention referring to Fig. 3
Flow diagram.In conjunction with Fig. 3, the measurement method of the screen of trees head room in the application the following steps are included:
Step S110: using the imaged image of Synthetic Aperture Radar satellite shooting power transmission line corridor, and by the image
Image Real-time Transmission is to grounded receiving station；
The Synthetic Aperture Radar satellite being applied in the application specifically includes that Japanese ALOS satellite, Canada RADARSAT-
2 satellites, Germany's TerraSAR-X satellite and COSMO-SkyMed satellite, also, the Synthetic Aperture Radar satellite include HH,
Tetra- kinds of imaging polarization modes of VV, HV, VH, according to different Polarization scattering mechanism, the Synthetic Aperture Radar satellite can be obtained
Different polarization interference phases, the polarization interference phase include: HH interferometric phase, HV interferometric phase, VV interferometric phase, HH-
VV interferometric phase and HH+VV interferometric phase.When obtaining the imaged image of power transmission line corridor, firstly, collecting the synthesis passed by
Orbit information, the transit time of aperture radar satellite, convenient for having a clear understanding of the track letter that tested screen of trees and hemisphere are passed through
Breath and transit time generate the time of measurand result.Then, using Synthetic Aperture Radar satellite respectively to screen of trees and ground
Electromagnetic signals, and generate electromagnetic wave interference reflection signal.Finally, it is anti-to receive the electromagnetic wave interference by major-minor antenna
The specular displacement for penetrating signal is poor, and obtains the imaged image, wherein it is reflected by electromagnetic wave interference, it is anti-at different location
Signal strength difference is penetrated, the point of unlike signal intensity can be obtained in imaged image.
Synthetic Aperture Radar satellite will acquire imaged image real-time Transmission to grounded receiving station, and grounded receiving station connects in real time
Receiving influences image.The grounded receiving station being applied in the application includes: Miyun grounded receiving station, Keshen grounded receiving station, Sanya
Grounded receiving station, Kunming grounded receiving station and arctic grounded receiving station, when the Synthetic Aperture Radar satellite passed by is near
Grounded receiving station when, imaged image is transferred to nearest grounded receiving station, the data reception rate of the grounded receiving station
At Tbps grades or more, that is, be more than or equal to Tbps grade, it is ensured that the data of passed imaged image be it is real-time, it is undistorted.
Step S120: the imaged image received is passed through cloud platform real-time Transmission to application by the grounded receiving station
Server；
Step S130: according to the imaged image, the altitude data of screen of trees is calculated in the application server, and generates
Polar plot, the polar plot include the geographical coordinate position of the altitude data and the screen of trees；
What the altitude data of screen of trees referred to is exactly the tree height of screen of trees.The application server On-premise calculates the elevation of screen of trees
Calculation formula, calculation formula are as follows:
In formula, hvFor the elevation of screen of trees,It is dry for volume scattering complex phase corresponding with vegetation hat volume scattering vector；For with
The corresponding earth's surface scattering complex phase of earth's surface Scattering of Vector is dry；For Effective wave number, θ is incidence angle, i.e. synthetic aperture thunder
Up to satellite and object line with the angle between Synthetic Aperture Radar satellite plumb line, for phase difference to be converted to vertical height
Degree, wvFor HV Polarization scattering, wsFor HH-VV Polarization scattering.
According to RVoG scattering model and with surveying multiple coherent calculation phase, passes through and calculate ground phase, simplify above-mentioned calculating tree
The grid DEM formula of barrier, the calculation formula of ground phase are as follows:
In formula,For ground phase, For
Effective body radiates ratio, and For effective surface radiation ratio, and,
The elevation inverting of screen of trees is carried out according to described ground phase, calculation formula is as follows:
Step S140: the status data of transmission line of electricity in power grid is directed into the polar plot, wherein the status number
According to the geographical coordinate position for including: transmission tower position, transmission line of electricity height, corresponding transmission tower and transmission line of electricity；
Step S150: according to the polar plot, the difference in height of computing electric power line height and the screen of trees obtains power transmission line
The free height angle value of road corridor screen of trees, wherein the free height angle value includes the shortest distance and the side of screen of trees and transmission line of electricity
Azimuth angle information.
By the existing transmission line status data of power grid, such as transmission tower position, transmission line of electricity height, corresponding power transmission rod
Tower and the geographical coordinate position of transmission line of electricity etc. imported into the polar plot containing screen of trees altitude data and geographical coordinate position
In, by the difference in height of screen of trees in computing electric power line height and power transmission line corridor, transmission of electricity corridor screen of trees headroom can be obtained
Height value, the free height angle value include the shortest distance and azimuth information of screen of trees and transmission line of electricity.And pass through transmission of electricity
The convenient position for accurately determining screen of trees of the geographical coordinate position of route.
The measurement method of power transmission line corridor screen of trees head room in the application avoids power failure or operation of ascending a height,
Without putting into a large amount of manpower and material resources, the labor intensity of worker is greatly reduced, it can be real by Synthetic Aperture Radar satellite
When get the power transmission line corridor of large area and influence image, can precisely, timely by the calculation processing of application server
The free height angle value of the power transmission line corridor screen of trees of large area is got, while improving transmission line safety service ability.
Based on the same technical idea, the embodiment of the invention also provides a kind of power transmission line corridor screen of trees head rooms
Measuring system, the system comprises:
Image collecting module, for the imaged image using Synthetic Aperture Radar satellite shooting power transmission line corridor, and will
The imaged image real-time Transmission is to grounded receiving station；
Image acquiring module is passed the imaged image received by cloud platform for the grounded receiving station in real time
Transport to application server；
Screen of trees information computational module, for according to the imaged image, the height of screen of trees to be calculated in the application server
Number of passes evidence, and polar plot is generated, the polar plot includes the geographical coordinate position of the altitude data and the screen of trees；
Line information computing module, for the status data of transmission line of electricity in power grid to be directed into the polar plot,
In, the status data includes: transmission tower position, transmission line of electricity height, corresponding transmission tower and transmission line of electricity ground
Manage coordinate position；
Head room module, for according to the polar plot, the difference in height of computing electric power line height and the screen of trees to be obtained
To the free height angle value of power transmission line corridor screen of trees, wherein the free height angle value includes the most short distance of screen of trees and transmission line of electricity
From and azimuth information.
Since embodiment of above is that reference combination is illustrated on other modes, have between different embodiments
There is identical part, identical, similar part may refer to each other between each embodiment in this specification.Herein no longer in detail
It illustrates.
It should be noted that in the present specification, the relational terms of such as " first " and " second " or the like are used merely to
It distinguishes one entity or operation from another entity or operation, and not necessarily requires or imply these entities or operation
Between there are any this actual relationship or sequences.Moreover, the terms "include", "comprise" or its any other variant are intended to
Cover non-exclusive inclusion, so that the circuit structure, article or the equipment that include a series of elements not only include those
Element, but also including other elements that are not explicitly listed, or further include for this circuit structure, article or equipment
Intrinsic element.In the absence of more restrictions, the element for thering is sentence "including a ..." to limit, it is not excluded that
There is also other identical elements in circuit structure, article or equipment including the element.
Those skilled in the art will readily occur to its of the application after considering specification and practicing the disclosure invented here
His embodiment.This application is intended to cover any variations, uses, or adaptations of the invention, these modifications, purposes or
Person's adaptive change follows the general principle of the application and including the undocumented common knowledge in the art of the application
Or conventional techniques.The description and examples are only to be considered as illustrative, and the true scope and spirit of the application are wanted by right
The content asked is pointed out.
Above-described the application embodiment does not constitute the restriction to the application protection scope.
Claims (9)
1. a kind of measurement method of power transmission line corridor screen of trees head room, which is characterized in that the described method includes:
Using the imaged image of Synthetic Aperture Radar satellite shooting power transmission line corridor, and extremely by the imaged image real-time Transmission
Grounded receiving station；
The imaged image received is passed through cloud platform real-time Transmission to application server by the grounded receiving station；
According to the imaged image, the altitude data of screen of trees is calculated in the application server, and generates polar plot, the arrow
Spirogram includes the geographical coordinate position of the altitude data and the screen of trees；
The status data of transmission line of electricity in power grid is directed into the polar plot, wherein the status data includes: power transmission rod
Tower position, transmission line of electricity height, corresponding transmission tower and transmission line of electricity geographical coordinate position；
According to the polar plot, the difference in height of computing electric power line height and the screen of trees obtains power transmission line corridor screen of trees
Free height angle value, wherein the free height angle value includes the shortest distance and azimuth information of screen of trees and transmission line of electricity.
2. the measurement method of power transmission line corridor screen of trees head room according to claim 1, which is characterized in that the benefit
With the imaged image of Synthetic Aperture Radar satellite shooting power transmission line corridor, comprising:
Using Synthetic Aperture Radar satellite respectively to screen of trees and ground launch electromagnetic wave signal, and generate electromagnetic wave interference reflection letter
Number；
The electromagnetic wave interference is received by major-minor antenna and reflects signal, and obtains the imaged image.
3. the measurement method of power transmission line corridor screen of trees head room according to claim 2, which is characterized in that described
Using the Synthetic Aperture Radar satellite passed by respectively to before screen of trees and ground launch electromagnetic wave signal, the method also includes:
Collect orbit information, the transit time of the Synthetic Aperture Radar satellite passed by.
4. the measurement method of power transmission line corridor screen of trees head room according to claim 1, which is characterized in that described to incite somebody to action
The imaged image real-time Transmission is to grounded receiving station, comprising:
When the Synthetic Aperture Radar satellite passed by passes through the grounded receiving station, imaged image is transmitted to nearest ground and is connect
Receive station.
5. the measurement method of power transmission line corridor screen of trees head room according to claim 1, which is characterized in that described
According to the imaged image, the altitude data of screen of trees is calculated in the application server, comprising:
The application server On-premise calculates the grid DEM formula of screen of trees, and calculation formula is as follows:
In formula, hvFor the elevation of screen of trees,It is dry for volume scattering complex phase corresponding with vegetation hat volume scattering vector；For with earth's surface
The corresponding earth's surface scattering complex phase of Scattering of Vector is dry；For Effective wave number, θ is incidence angle, for converting phase difference
For vertical height, wvFor HV Polarization scattering, wsFor HH-VV Polarization scattering；
It is as follows according to RVoG scattering model and with surveying multiple coherent calculation phase, calculation formula:
In formula,For ground phase,It is effective
Body radiates ratio, and For effective surface radiation ratio, and,
The elevation inverting of screen of trees is carried out according to described ground phase, calculation formula is as follows:
6. the measurement method of power transmission line corridor screen of trees head room according to claim 1, which is characterized in that the conjunction
It include HH, VV, HV, VH imaging polarization mode at aperture radar satellite.
7. the measurement method of power transmission line corridor screen of trees head room according to claim 1, which is characterized in that according to not
Same Polarization scattering mechanism, the Synthetic Aperture Radar satellite obtain different polarization interference phases, the polarization interference phase
It include: HH interferometric phase, HV interferometric phase, VV interferometric phase, HH-VV interferometric phase and HH+VV interferometric phase.
8. the measurement method of power transmission line corridor screen of trees head room according to claim 1, which is characterized in that describedly
The data reception rate of face receiving station is more than or equal to Tbps grades.
9. a kind of measuring system of power transmission line corridor screen of trees head room, which is characterized in that the system comprises:
Image collecting module, for the imaged image using Synthetic Aperture Radar satellite shooting power transmission line corridor, and will be described
Imaged image real-time Transmission is to grounded receiving station；
The imaged image received is passed through cloud platform real-time Transmission extremely for the grounded receiving station by image acquiring module
Application server；
Screen of trees information computational module, for according to the imaged image, the high number of passes of screen of trees to be calculated in the application server
According to, and polar plot is generated, the polar plot includes the geographical coordinate position of the altitude data and the screen of trees；
Line information computing module, for the status data of transmission line of electricity in power grid to be directed into the polar plot, wherein institute
Stating status data includes: transmission tower position, transmission line of electricity height, corresponding transmission tower and the geographical of transmission line of electricity sit
Cursor position；
Head room module, for according to the polar plot, the difference in height of computing electric power line height and the screen of trees to be obtained defeated
The free height angle value of electric line corridor screen of trees, wherein the free height angle value include the shortest distance of screen of trees and transmission line of electricity with
And azimuth information.
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| CN113358033A (en) * | 2021-05-25 | 2021-09-07 | 晋能控股煤业集团有限公司 | Method for judging safe distance of trees under power transmission line based on visual analysis soft measurement |
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| CN116592851A (en) * | 2023-07-13 | 2023-08-15 | 中国电力科学研究院有限公司 | Three-dimensional monitoring method and system for power transmission channel tree obstacle satellite fused with line body |
| CN116935234A (en) * | 2023-09-18 | 2023-10-24 | 众芯汉创(江苏)科技有限公司 | Automatic classification and tree obstacle early warning system and method for power transmission line corridor point cloud data |
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| CN111487619A (en) * | 2020-04-22 | 2020-08-04 | 云南电网有限责任公司电力科学研究院 | Method for detecting ground inclination angle of transmission tower by utilizing SAR-X high-resolution bunching mode |
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| CN113763325B (en) * | 2021-08-03 | 2024-02-13 | 山东电力工程咨询院有限公司 | Method for measuring height of tower and height of hanging wire point in non-three-dimensional environment |
| CN115307604A (en) * | 2022-10-12 | 2022-11-08 | 国网山东省电力公司五莲县供电公司 | Transmission line clearance value measuring method and device |
| CN115307604B (en) * | 2022-10-12 | 2023-02-24 | 国网山东省电力公司五莲县供电公司 | Transmission line clearance value measuring method and device |
| CN116592851A (en) * | 2023-07-13 | 2023-08-15 | 中国电力科学研究院有限公司 | Three-dimensional monitoring method and system for power transmission channel tree obstacle satellite fused with line body |
| CN116592851B (en) * | 2023-07-13 | 2023-09-19 | 中国电力科学研究院有限公司 | Three-dimensional monitoring method and system for power transmission channel tree obstacle satellite fused with line body |
| CN116935234A (en) * | 2023-09-18 | 2023-10-24 | 众芯汉创(江苏)科技有限公司 | Automatic classification and tree obstacle early warning system and method for power transmission line corridor point cloud data |
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