CN107171744A - A kind of high-power station prologue test system and method based on three-dimensional map - Google Patents
A kind of high-power station prologue test system and method based on three-dimensional map Download PDFInfo
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- CN107171744A CN107171744A CN201710519080.5A CN201710519080A CN107171744A CN 107171744 A CN107171744 A CN 107171744A CN 201710519080 A CN201710519080 A CN 201710519080A CN 107171744 A CN107171744 A CN 107171744A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/10—Monitoring; Testing of transmitters
- H04B17/101—Monitoring; Testing of transmitters for measurement of specific parameters of the transmitter or components thereof
- H04B17/103—Reflected power, e.g. return loss
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/10—Monitoring; Testing of transmitters
- H04B17/15—Performance testing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/20—Monitoring; Testing of receivers
- H04B17/29—Performance testing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/309—Measuring or estimating channel quality parameters
Abstract
The invention discloses a kind of high-power station prologue test system based on three-dimensional map of radio-frequency measurement technical field, include frequency spectrograph including receiving end module described in spatial loss analysis module and reception end module and emitter estimation block, reception antenna, the spatial loss analysis module includes finally drawing launch point to the space loss Lspace of receiving point using image method；The process of prologue test will determine the antenna gain Gt and receiving terminal antenna gain Gr of transmitting terminal, assuming that receiving terminal record power is Pr, then the emitter estimation block calculates the power P t=Pr Gr+Lspace Gt of tested emitter, the high-power station prologue test system based on three-dimensional map, the space loss before launch point to test point can be more accurately calculated, the prologue test of complicated geographical environment is can adapt to.
Description
Technical field
The present invention relates to radio-frequency measurement technical field, specially a kind of high-power station prologue test based on three-dimensional map
System and method.
Background technology
When testing high-power wireless radio station station, generally tested using conduction connection, that is, pass through radio-frequency cable
Tested emitter radio frequency delivery outlet and test equipment are carried out into conduction to be connected, this method need to coordinate station management unit make by
Scaffold tower station is stopped, and removes the antenna of the tested station, will access test equipment by station radio frequency output port, be then turned on by
Scaffold tower station is tested, it is therefore desirable to be accomplished by being coordinated in many ways before testing, it is difficult to reach.Built in addition for some
The high-power station on high tower, is also difficult to conduct connecting test, therefore rises prologue test in the industry in recent years, that is, tests and set
Standby to be measured by way of reception antenna is by prologue, the most key technology of this metering system is how accurately to calculate electricity
The spatial loss of magnetic wave.Application No. CN201510152746.9 patent application discloses a kind of open ground
Environment Imitating TV station transmission power radiates test system, and why the technical scheme, which is only applicable to open ground environment, is surveyed
Examination, is because electromagnetic wave space loss is calculated in the program uses empirical equation, it is impossible to adapt to complicated geographical environment, because
For under complicated geographical environment, the influence factor of Electromagnetic Wave Propagation loss is too many, especially shadow of the multipath effect to space loss
Sound is especially big, thus the error of empirical equation calculating space loss is larger, it is impossible to meet the prologue test under complicated geographical environment
It is required that.
The content of the invention
It is an object of the invention to provide a kind of high-power station prologue test system and method based on three-dimensional map, with
Solve to propose in above-mentioned background technology builds the high-power station on high tower for some, is also difficult to conduction connection and surveys
Examination, under complicated geographical environment, the influence factor of Electromagnetic Wave Propagation loss is too many, especially shadow of the multipath effect to space loss
Sound it is especially big, thus empirical equation calculate space loss error it is larger the problem of.
To achieve the above object, the present invention provides following technical scheme：A kind of high-power station based on three-dimensional map is opened
Field test system, wherein, high-power station prologue test system that should be based on three-dimensional map includes spatial loss analysis mould
Block and reception end module and emitter estimation block；The reception end module includes frequency spectrograph, reception antenna, the reception day
Line includes directive antenna.The reception antenna is used to receiving the electromagnetic wave that emitter under complicated geographical environment launches and is converted to
Electric signal, sends frequency spectrograph to；The peak power that the frequency spectrograph incides reception antenna according to electric signal calculating is connect
Receiving end field intensity value Pr；The spatial loss analysis module includes：Found out and be possible to using image method with reference to three-dimensional map
The effective pip existed, and all effective reflection paths are drawn, travel through all visual routes, it is assumed that the transmitting of emission source
Field strength, traversal calculates the field strength at per paths to receiving point, calculates the vector that every paths reach the field strength at receiving point
Superposition, obtains the total intensity of receiving point, so as to calculate launch point to the space loss Lspace of receiving point；The emitter is estimated
Calculate the power P t that module calculates tested emitter according to following equation：Pt=Pr-Gr+Lspace-Gt；(Gr increases for reception antenna
Benefit；Gt is the antenna gain of transmitting terminal).
It is preferred that, wherein, the visual route includes direct path and reflection path.
It is preferred that, wherein, the image method, which finds out pip, to be included：Emission layer, reflecting layer and Image Planes are set, it is assumed that hair
Exit point is located at the emission layer in space plane, and pip is located at the reflecting layer of space plane, then must have the mirror point of Image Planes
Positioned at the space aspects parallel with reflecting layer with emission layer, launch point is relative to line between the mirror point and receiving point of reflecting surface
With the focus of reflecting surface, the point is pip physical location.
A kind of survey for test system of being begun it is a further object to provide high-power station based on three-dimensional map
Method for testing, wherein, should the begin method of testing of test system of high-power station based on three-dimensional map damaged by spatial
Consumption analysis module and reception end module and emitter estimation block test and calculate the power of tested emitter, specific step
It is rapid as follows：
S1：Launch end module, determine the antenna gain Gt of transmitting terminal：The station of actual use is all without being one any
The all uniform preferable transmitting point source of the gain in direction, it is therefore desirable to the out-of-roundness of antenna gain is considered, by the day for inquiring about the station
Line number according to obtaining the maximum gain direction of antenna, further according to the position relationship before launch point and receiving point calculate receiving point with
The angle of the maximum gain direction of antenna, described angle includes horizontally and vertically angle, is then gone out according to antenna
The gain data of factory is modified, and obtains the antenna gain Gt in receiving point direction；
S2：Spatial loss analysis module, calculates spatial loss：With reference to three-dimensional map, found out by image method
All effective pips that may be present, so that all effective reflection paths are drawn, traversal direct path and all reflex circuits
Footpath, it is assumed that the transmitting field strength of emission source, traversal calculates the field strength at per paths to receiving point, calculates every paths arrival and connects
Field strength at sink it is vector superposed, the total intensity of receiving point is obtained, so as to calculate launch point to the space loss of receiving point
Lspace；
S3：End module is received, receiving antenna gain Gr is determined：Reception antenna is known parameters antenna, and compensation connects during calculating
The feeder loss of antenna is received, receiving antenna gain Gr is calculated；
S4：Emitter estimation block：According to above calculated value calculate the power P t of tested emitter.
Further, the antenna gain Gt of transmitting terminal is calculated according to following equation in the step S1：Gt=Ltant-
Ltcable；Ltant is the actual gain of transmitting terminal antenna；Ltcable is transmitting station feeder loss.
Further, described hollow propagation loss analysis module of step S2 is calculated according to following equation：
Etotal is the resultant field intensity values of receiving point；λ is wavelength；Et assumes system to be any
System transmitting field intensity value.
Further, the field intensity value of the antenna receiving port of receiving terminal is calculated according to following equation in the step S3：
Psys=Pr-Lrant+Lrcable, Pr are received field intensity values；Lrant is the gain of reception antenna；Lrcable is
The feeder loss of reception antenna.
Further, the power meter formula of tested emitter is in the step S4：Pt=Psys+Lspace-Gt.
Compared with prior art, the beneficial effects of the invention are as follows：The high-power station prologue test based on three-dimensional map
System, can more accurately calculate the space loss before launch point to test point, can adapt to the prologue of complicated geographical environment
Test.
Brief description of the drawings
The system block diagram that Fig. 1 tests for the high-power station prologue of the invention based on three-dimensional map；
Fig. 2 is the pip schematic diagram that image method of the present invention finds building surface.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
Fig. 1-2 is referred to, in order to solve the prologue met under complicated geographical environment the test proposed in above-mentioned background technology
It is required that, the present invention provides following technical scheme：A kind of high-power station prologue test system based on three-dimensional map, wherein, should
Based on three-dimensional map the high-power station prologue test system include spatial loss analysis module 2 and receive end module 3 with
And emitter estimation block 4.In the present invention complicated geographical environment be for open ground environment in the prior art, including
But it is not limited to the environment that launch point has building stop to receiving point.
The reception end module 3 includes frequency spectrograph, and reception antenna, the reception antenna includes directive antenna.It is described to connect
Receiving antenna is used to receiving electromagnetic wave that emitter under complicated geographical environment launches and is converted to electric signal, sends frequency spectrograph to；Institute
State frequency spectrograph and calculated according to the electric signal and incide the peak power of reception antenna and obtain receiving terminal field intensity value Pr；The space is passed
Broadcasting loss analysis module 2 includes：All effective pips that may be present are found out using image method with reference to three-dimensional map, and drawn
All effective reflection paths, travel through all visual routes, it is assumed that the transmitting field strength of emission source, and traversal is calculated to be arrived per paths
Field strength at receiving point, calculates every paths and reaches the vector superposed of field strength at receiving point, obtain the total intensity of receiving point,
So as to calculate launch point to the space loss Lspace of receiving point；The emitter estimation block 4 is calculated according to following equation
The power P t of tested emitter：Pt=Pr-Gr+Lspace-Gt；In formula：Gr is receiving antenna gain；Gt is the antenna of transmitting terminal
Gain.
It is preferred that, wherein, the visual route includes direct path and reflection path.
It is preferred that, wherein, the image method, which finds out pip, to be included：Emission layer, reflecting layer and Image Planes are set, it is assumed that hair
Exit point is located at the emission layer in space plane, and pip is located at the reflecting layer of space plane, then must have the mirror point of Image Planes
Positioned at the space aspects parallel with reflecting layer with emission layer, launch point is relative to line between the mirror point and receiving point of reflecting surface
With the focus of reflecting surface, the point is pip physical location.
With reference to Fig. 1-2, the critical process of prologue test of the invention is mainly to determine that the antenna gain of transmitting terminal is Gt, sky
Between loss be Lspace and receiving terminal antenna gain is Gr, it is assumed that receiving terminal field intensity value is Pr, then is tested the power P t of emitter
=Pr-Gr+Lspace-Gt.
In order to get accurate emitter transmission power, the present invention needs to carry out a series of counter to push through journey.According to one
Whole test system is divided into four big major parts, respectively transmitting terminal by the theory and the demonstration of real work of series, the present invention
Module 1, spatial loss analysis module 2 and reception end module 3 and emitter estimation block 4.
It is specific as follows：
Receive end module 3：
In order to obtain accurate measurement result, the present invention needs to obtain accurate reception antenna incidence point field intensity value first
(or performance number).
Receiving terminal main equipment can select Agilent frequency spectrograph, be used as laboratory equipment, it is ensured that it is accurate that signal is received
Degree.The receiving terminal field intensity value (or performance number) of frequency spectrograph prevention at radio-frequency port is obtained, Pr is recorded as, the present invention needs to consider that feeder line is damaged
The influence that consumption and antenna gain are brought to system.Feeder loss is calibrated using the antenna feeder calibration function of frequency spectrograph, hair
Penetrate station feeder loss and be defined as Lrcable；Reception antenna selects the directive antenna (orientation illustrated with detailed antenna gain
Antenna), the frequency range from 300MHz to 1GHz is covered, its gain is defined as Lrant.So, by the field strength of antenna receiving port
Value (or performance number) is defined as Pantr and receiving terminal antenna gain is defined as Gr, may be calculated：
Gr=Lrant-Lrcable；
Psys=Pr-Lrant+Lrcable (1).
Spatial loss analysis module 2：
Electromagnetic wave is propagated in space, the characteristic with light, is likewise supplied with reflecting, is reflected, diffraction, the feelings such as scattering and transmission
Condition.Ray trace is a kind of skill for the prediction electric wave propagation characteristic being widely used in mobile communication and personal communication environment
Art, can for recognize in multipath channel receive and dispatch between all possible ray path.Once all possible ray is distinguished
After recognizing, so that it may amplitude, phase, delay and the polarization of every ray are calculated according to radio wave propagation theory, then in conjunction with antenna
Directional diagram and system bandwidth just can obtain the optics coherence tomography result of all rays of receiving point.
In order to which application ray tracking method is, it is necessary to which three-dimensional map data, the three-dimensional map data is first by earth's surface according to one
Resolution ratio is determined (such as with 1m2) surface data (have building treats as earth's surface building) progress discretization is obtained a series of
Point, then gathers the data acquisition system obtained by the height above sea level each put and GPS information.
For spatial propagation path, present invention primarily contemplates the visual route between launch point and receiving point, radio wave warp
Building transmission after can hardly to system gain provide contribution, so present invention primarily contemplates be direct path and reflex circuit
Footpath.
Because spatial loss value be mainly calculate launch point to signal intensity between receiving point difference, this value not with
The change of system emission power and change, so the present invention can arbitrarily assume herein system transmitting field intensity value be Et.
On direct path, the field intensity value E of receiving point can be drawn according to formula (2)：
Wherein, d be receiving point to distance between launch point, k is phase parameter, and λ is wavelength
K=2 π/λ (3)
For the signal on reflection path, the present invention needs to determine the length of reflection path first, the position letter of pip
Breath, the present invention combines the pip that three-dimensional map finds building surface using image method, as shown in Figure 2.
The emission layer that launch point is located in space plane is assumed initially that, pip is located at the reflecting layer of space plane, then
There must be mirror point to be located at the space aspects parallel with emission layer, reflecting layer.Assuming that transmitting point coordinates is (Xt, Yt, Zt), mirror image
Point coordinates is (Xm, Ym, Zm), and 3 points of A, B, C is known three coordinate points (Xa, Ya, Za) (Xb, Yb, Zb) on reflecting surface
Plane equation parameter after (Xc, Yc, Zc) conversion：
A=(Yb-Ya) (Zc-Za)-(Zb-Za) (Yc-Ya) (4)
B=(Zb-Za) (Xc-Xa)-(Xb-Xa) (Zc-Za) (5)
C=(Xb-Xa) (Yc-Ya)-(Yb-Ya) (Xc-Xa) (6)
Coordinate system is set up with reflecting layer, each layer formula can be obtained according to initial hypothesis：
Image Planes formula：A·x+B·y+C·z+D2=0 (7)
Reflecting layer formula：Ax+By+Cz+D=0 (8)
Emission layer formula：A·x+B·y+C·z+D1=0 (9)
Because coordinate system is set up with reflecting surface, Gu D=0.Bring launch point coordinate into formula (7) (9), can obtain：
D1=-(Axt+Byt+Czt) (10)
D2=D+ (D-D1) (11)
Then understood to meet by the straight line of pip to mirror point according to geometric formula：
Bringing this formula into formula (8) can obtain：
Then have
By formula (4), (5), (6), (13), (14) simultaneous can draw mirror image point coordinates (Xm, Ym, Zm).
Similarly, in order to ask for the actual position of pip on the plane of reflection, it is necessary to obtain launch point relative to reflecting surface
The focus of line and reflecting surface between mirror point and receiving point, the point is pip physical location.Assuming that reflecting layer expression formula is
Formula (8), A, B, C's asks for same formula (4), (5), (6), wherein：
D=- (Axa+Bya+Cza) (15)
Assuming that it is (Xr, Yr, Zr) to receive point coordinates, reflecting surface is (X, Y, Z), order with reflected ray intersection point
Bringing formula (16) into formula (4) can obtain：
Formula (16) is solved successively, can obtain intersecting point coordinate on reflecting surface is：
Bring formula (17) into formula (18) and can obtain reflecting surface and reflected ray intersecting point coordinate.
Obtain pip intersecting point coordinate after, the range information of reflected ray just can be learnt, receiving point field intensity value can according to
Lower formula is obtained：
E(Rx)⊥With E (Rx)//Electromagnetic wave is represented respectively to travel to after receiving point by reflection path, vertical polarization mode and
The received field intensity values of horizontal polarization mode.Because horizontal polarization and vertical polarization are mutually orthogonal in spatial field, receive
The calculating of point reflection field strength only needs to consider one.
The field intensity value vertically and horizontally polarized is represented respectively, need to be confirmed according to emission source polarization mode using vertical
The formula or the formula of horizontal polarization directly polarized.
R⊥, R//Vertical and horizontal directions reflectance factor is represented respectively, can be obtained according to below equation：
A(s2) it is reflected ray distance than coefficient：
A(s2)=s1/(s1+s2) (21)
Wherein S1 is receiving point to distance between pip, and S2 is launch point to distance between pip.
Be electric wave from pip to receiving point between phase offset on reflected ray path.
It is assumed that emission source is a vertical polarization signal, then receiving point total intensity can be according to (2), and (19) can draw and connect
Sink resultant field intensity values, are defined as Etotal：
Etotal=E (Rx)⊥+Et-Elos (22)
Similarly assume that emission source is a horizontal polarization signals, then the field strength that receiving point total intensity can be according to horizontal polarization
ValueDetermine receiving point resultant field intensity values Etotal.
According to field strength attenuation calculation formula, spatial field loss can be obtained, being defined as Lspace (dB) is：
By a series of contrast tests, using empirical model under complicated urban environment, the space loss estimated is missed
Difference is up to 15dB, and the method provided using the present invention can be such that space loss estimation error narrows down within 3dB.
Compared with prior art, spatial loss analysis module is found out all that may be present effectively anti-using image method
Exit point, so that all effective reflection paths are drawn, traversal direct path and all reflection paths, it is assumed that the launching site of emission source
By force, traversal calculates the field strength at per paths to receiving point, and the vector for calculating the field strength at every paths arrival receiving point is folded
Plus, the total intensity of receiving point is obtained, so that transmitting can more be accurately calculated to the space loss of receiving point by calculating launch point
Point can more accurately calculate space loss, can adapt to complicated geographical environment to the space loss before test point
Prologue test
Launch end module 1：
By above two parts, the present invention can calculate the EIRP values of transmitting antenna emission port, in order to further confirm that
Transmitting terminal transmitter power, the present invention needs to obtain the related data of transmitting terminal, including transmitting terminal feeder loss and transmitting antenna
Gain.The transmitting antenna index of the legal station can be inquired about by the standard of all kinds of stations, and the present invention needs the master considered
The out-of-roundness being horizontally oriented, the actual gain of transmitting antenna is defined as Ltant；Simultaneously according to launch point and receiving point it
Preceding position relationship calculates the angle of receiving point and the maximum gain direction of antenna, and described angle includes horizontal direction and hung down
Straight angular separation, due to the difference of actual test position, can not generally be tested in preferable position, therefore according to actual bit
Put and maximum gain direction angle deviation, the gain data dispatched from the factory according to antenna is modified to be compensated by tabling look-up.
Transmitting station feedback pipe decay is calculated according to different feedback tubing types and height of transmitting antenna, and feedback tubing type and correspondence decay can
Table lookup operations are carried out in system as required, Ltcable is defined as.So, the overall gain that transmitting terminal is provided：
Gt=Ltant-Ltcable (24).
Emitter estimation block 4, calculating is launched station transmitter power Pt：
By to receiving terminal, the series of computation of spatial loss and transmitting terminal, the present invention can be according to formula (1)
(9) (10) can be drawn, transmitting station transmitter power is defined as Pt：
Pt=Psys+Lsapce-Gt (25)；
That is Pt=Pr-Gr+Lspace-Gt (26).
It should be noted that the step S1 of the present invention, step S2, step S3 is independent module, and its order is swapped
It is also the scope of protection of the invention with combination.
Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of changes, modification can be carried out to these embodiments, replace without departing from the principles and spirit of the present invention by understanding
And modification.
Claims (8)
1. a kind of high-power station prologue test system based on three-dimensional map, it is characterised in that should be based on the big of three-dimensional map
Power station prologue test system includes spatial loss analysis module and receives end module and emitter estimation block；
The reception end module includes frequency spectrograph, and reception antenna, the reception antenna includes directive antenna, the reception antenna
For receiving electromagnetic wave that emitter under complicated geographical environment launches and being converted to electric signal, frequency spectrograph, the frequency spectrum are sent to
The peak power that instrument incides reception antenna according to electric signal calculating obtains receiving terminal field intensity value Pr；The spatial loss
Analysis module includes：All effective pips that may be present are found out using image method with reference to three-dimensional map, and draw all have
The reflection path of effect, travels through all visual routes, it is assumed that the transmitting field strength of emission source, and traversal is calculated per paths to receiving point
The field strength at place, calculates every paths and reaches the vector superposed of field strength at receiving point, the total intensity of receiving point is obtained, so as to count
Launch point is calculated to the space loss Lspace of receiving point；
The emitter estimation block calculates the power P t of tested emitter according to following equation：
Pt=Pr-Gr+Lspace-Gt；
In formula：
Gr is receiving antenna gain；
Gt is the antenna gain of transmitting terminal.
2. a kind of high-power station prologue test system based on three-dimensional map according to claim 1, it is characterised in that
The visual route includes direct path and reflection path.
3. a kind of high-power station prologue test system based on three-dimensional map according to claim 2, it is characterised in that
The image method, which finds out pip, to be included：Emission layer, reflecting layer and Image Planes are set, it is assumed that launch point is located in space plane
Emission layer, pip is located at the reflecting layer of space plane, then the mirror point that must have Image Planes is located at and emission layer and reflecting layer
Parallel space aspects, launch point is relative to the focus of line and reflecting surface between the mirror point and receiving point of reflecting surface, the point
As pip physical location.
The method of testing of test system 4. a kind of high-power station based on three-dimensional map is begun, it is characterised in that three should be based on
The method of testing of the high-power station prologue test system of dimension map passes through spatial loss analysis module and receiving terminal mould
Block and emitter estimation block test and calculate the power of tested emitter, comprise the following steps that：
S1：Launch end module, determine the antenna gain Gt of transmitting terminal：Actual use the station all without be one in any direction
The all uniform preferable transmitting point source of gain, it is therefore desirable to the out-of-roundness of antenna gain is considered, by the antenna number for inquiring about the station
According to the maximum gain direction for obtaining antenna, receiving point and antenna are calculated further according to the position relationship before launch point and receiving point
Maximum gain direction angle, described angle includes horizontally and vertically angle, then dispatched from the factory according to antenna
Gain data is modified, and obtains the antenna gain Gt in receiving point direction；
S2：Spatial loss analysis module, calculates spatial loss：With reference to three-dimensional map, found out by image method all
Effective pip that may be present, so as to draw all effective reflection paths, traversal direct path and all reflection paths are false
Determine the transmitting field strength of emission source, traversal calculates the field strength at per paths to receiving point, calculates every paths and reaches receiving point
The field strength at place it is vector superposed, the total intensity of receiving point is obtained, so as to calculate launch point to the space loss of receiving point
Lspace；
S3：End module is received, receiving antenna gain Gr is determined：Reception antenna is known parameters antenna, and compensation receives day during calculating
The feeder loss of line, calculates receiving antenna gain Gr；
S4：Emitter estimation block：According to above calculated value calculate the power P t of tested emitter.
The method of testing of test system 5. a kind of high-power station based on three-dimensional map according to claim 4 is begun,
It is characterized in that：
The antenna gain Gt of transmitting terminal is calculated according to following equation in the step S1：
Gt=Ltant-Ltcable；
Ltant is the actual gain of transmitting terminal antenna；
Ltcable is transmitting station feeder loss.
The method of testing of test system 6. a kind of high-power station based on three-dimensional map according to claim 5 is begun,
It is characterized in that：Described hollow propagation loss analysis module of step S2 is calculated according to following equation：
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Etotal is the resultant field intensity values of receiving point；
λ is wavelength；
Et is that any hypothesis system launches field intensity value.
The method of testing of test system 7. a kind of high-power station based on three-dimensional map according to claim 6 is begun,
It is characterized in that：The field intensity value of the antenna receiving port of receiving terminal is calculated according to following equation in the step S3：
Psys=Pr-Lrant+Lrcable
Pr is receiving terminal field intensity value；
Lrant is the gain of reception antenna；
Lrcable is the feeder loss of reception antenna.
The method of testing of test system 8. a kind of high-power station based on three-dimensional map according to claim 7 is begun,
It is characterized in that：
The power that emitter is tested in the step S4 is calculated according to following equation：Pt=Psys+Lspace-Gt.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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