CN107888308A - Forecasting Methodology and system, radio field intensity Forecasting Methodology and system is lost in electromagnetic wave - Google Patents
Forecasting Methodology and system, radio field intensity Forecasting Methodology and system is lost in electromagnetic wave Download PDFInfo
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- CN107888308A CN107888308A CN201711242198.4A CN201711242198A CN107888308A CN 107888308 A CN107888308 A CN 107888308A CN 201711242198 A CN201711242198 A CN 201711242198A CN 107888308 A CN107888308 A CN 107888308A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/373—Predicting channel quality or other radio frequency [RF] parameters
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/391—Modelling the propagation channel
- H04B17/3912—Simulation models, e.g. distribution of spectral power density or received signal strength indicator [RSSI] for a given geographic region
Abstract
Forecasting Methodology, including step is lost in a kind of electromagnetic wave：According to the feature information extraction external structure parameter of the objective body where electromagnetic wave receiving point；The perforate proportionality coefficient and perforate material loss factor of the objective body are determined according to the external structure parameter；The electromagnetic wave penetration loss value of the objective body is obtained according to the incident angle of outside material loss factor and electromagnetic wave of the perforate proportionality coefficient, perforate material loss factor, objective body.Above-mentioned electromagnetic wave loss Forecasting Methodology obtains electromagnetic wave penetration loss value according to outside the material loss factor and incident angle of perforate proportionality coefficient, perforate material loss factor, objective body.The problem of conventional art electromagnetic wave loss forecasting inaccuracy is true is the method overcome, realizes and electromagnetic wave is lost progress Accurate Prediction, improves the accuracy of the radio field intensity inside prediction objective body.A kind of electromagnetic wave loss forecasting system, radio field intensity Forecasting Methodology and system are also provided.
Description
Technical field
The present invention relates to electromagnetic wave technology field, and Forecasting Methodology and system, electromagnetism is lost more particularly to a kind of electromagnetic wave
The strong Forecasting Methodology of wave field and system.
Background technology
The popularization degree more and more higher of electronic equipment at present, wherein many intelligent terminals need to connect network, building
, it is necessary to carry out the prediction of wireless network signal strength to the area covered required for network during wireless network.Due to wireless signal
Need to be transmitted using electromagnetic wave, so needing the radio field intensity size progress to wireless signal radiation source institute covering area
Accurate Prediction, to ensure the smooth transmission of wireless signal.
For example, high buildings and large mansions are numerous at present, it is accordingly required in particular to the inside electromagnetic wave letter of the objective bodies such as groups of building or building
Number intensity is predicted.The signal intensity is carried out Accurate Prediction it is critical that how Accurate Prediction electromagnetic wave is from target
The loss value traveled to outside body inside objective body.
Conventional art is typically transferred to inside according to the outside material of objective body to predict electromagnetic wave outside objective body
Electromagnetic wave loss value.But because the feature of objective body is numerous, such as building just has diversified exterior wall type, institute
With traditional prediction mode can not Accurate Prediction electromagnetic wave loss value, and then have impact on prediction objective body inside electromagnetic wave
The accuracy of field strength.
The content of the invention
Based on this, it is necessary to for electromagnetic wave loss value forecasting inaccuracy it is true the problem of, there is provided a kind of loss prediction of electromagnetic wave
Method.
Forecasting Methodology, including step is lost in a kind of electromagnetic wave：
According to the feature information extraction external structure parameter of the objective body where electromagnetic wave receiving point；
The perforate proportionality coefficient and perforate material loss factor of the objective body are determined according to the external structure parameter；
According to the perforate proportionality coefficient, perforate material loss factor, objective body outside material loss factor and electricity
The incident angle of magnetic wave obtains the electromagnetic wave penetration loss value of the objective body.
Forecasting Methodology is lost in above-mentioned electromagnetic wave, and the external structure parameter of objective body is extracted from the characteristic information of objective body,
And the perforate ratio and perforate material loss factor of objective body are determined according to external structure parameter, according to perforate proportionality coefficient, open
Hole material loss factor, objective body outside material loss factor and electromagnetic wave incident angle obtain electromagnetic wave penetration loss
Value, the problem of conventional art electromagnetic wave loss forecasting inaccuracy is true is the method overcome, realizes and electromagnetic wave loss is carried out accurately
Prediction, improve the accuracy of the radio field intensity inside prediction objective body.
In one embodiment, according to the perforate proportionality coefficient, perforate material loss factor, objective body outside material
The incident angle of loss factor and electromagnetic wave obtains the step of electromagnetic wave penetration loss value of the objective body：
According to the incident angle of the perforate ratio of the objective body, outside material, perforate material and electromagnetic wave structure
The penetration loss model of objective body；
By the perforate proportionality coefficient of the objective body, outside material loss factor, perforate material loss factor and electromagnetic wave
Incident angle input the penetration loss model and obtain the electromagnetic wave penetration loss value.
Penetration loss model includes in one embodiment：
Wherein, LpenThe electromagnetic wave penetration loss is represented, p represents the perforate proportionality coefficient, LwRepresent the outside material
Matter loss factor, LgThe perforate material loss factor is represented, θ represents the incident angle of the electromagnetic wave, LvFor the additional of setting
Penetration loss value, α are the index parameter of setting.
In one embodiment, electromagnetic wave loss Forecasting Methodology also comprises the following steps：
The internal structure parameter of objective body is extracted from the characteristic information of the objective body, according to the internal structure parameter
Obtain the internal loss coefficient of the objective body；
The internal transmission distance of electromagnetic wave is determined according to the position of the receiving point, according to the internal transmission distance and interior
Portion's loss factor obtains electromagnetic wave internal communication loss value.
In one embodiment, electromagnetic wave internal communication damage is obtained according to the internal transmission distance and internal loss coefficient
The step of consumption, includes：
Electromagnetic wave internal communication loss value is calculated using equation below：
Lindoor=β d1
Wherein, LindoorThe electromagnetic wave internal communication loss value is represented, β represents the internal loss coefficient, d1Represent institute
State internal transmission distance.
In one embodiment, electromagnetic wave loss Forecasting Methodology also comprises the following steps：
The positional information of electromagnetic wave emission source is obtained, the outside transmission range of electromagnetic wave is determined according to the positional information；
Wherein, the outside transmission range is the distance that electromagnetic wave propagates to the objective body from the emission source of electromagnetic wave；
The external communication loss value of electromagnetic wave is obtained according to the frequency values of the outside transmission range and electromagnetic wave.
In one embodiment, the outside of electromagnetic wave is obtained according to the frequency values of the outside transmission range and electromagnetic wave to pass
The step of broadcasting loss value includes：
Electromagnetic wave external communication loss value is calculated using equation below：
Lf=32.4+20lg f+20lg d2
Wherein, LfThe electromagnetic wave external communication loss value is represented, f represents the frequency values of the electromagnetic wave, d2Described in expression
Outside transmission range.
The problem of forecasting inaccuracy is true is lost for conventional art electromagnetic wave in addition, there is a need to, there is provided a kind of electromagnetic wave damage
Forecasting system is consumed, including：
Parameter extraction module, for being joined according to the feature information extraction external structure of the objective body where electromagnetic wave receiving point
Number；
Coefficient determination module, for determining the perforate proportionality coefficient of the objective body according to the external structure parameter and opening
Hole material loss factor；
Be lost acquisition module, for according to the perforate proportionality coefficient, perforate material loss factor, objective body outside material
The incident angle of matter loss factor and electromagnetic wave obtains the electromagnetic wave penetration loss value of the objective body.
Forecasting system is lost in above-mentioned electromagnetic wave, and objective body is extracted from the characteristic information of objective body using parameter extraction module
External structure parameter, the perforate ratio and perforate material of objective body are determined according to external structure parameter by coefficient determination module
Loss factor, damaged using acquisition module is lost according to the outside material of perforate proportionality coefficient, perforate material loss factor, objective body
The incident angle for consuming coefficient and electromagnetic wave obtains electromagnetic wave penetration loss value, and this system overcomes the loss of conventional art electromagnetic wave
The problem of forecasting inaccuracy is true, realizes and Accurate Prediction is carried out to electromagnetic wave loss value, improve the electromagnetism inside prediction objective body
The strong accuracy of wave field.
Further, for above-mentioned radio field intensity forecasting inaccuracy it is true the problem of, a kind of prediction of radio field intensity is also provided
Method, this method comprise the following steps：
The antenna for obtaining the transmission power of transmitting antenna of electromagnetic wave, the antenna gain of transmitting antenna and reception antenna increases
Benefit；Wherein, the reception antenna is located at the inside of objective body；
Obtain the electromagnetic wave loss value of the objective body；Wherein, electromagnetic wave loss include electromagnetic wave penetration loss value,
Electromagnetic wave internal communication loss value and electromagnetic wave external communication loss value, it is pre- that Forecasting Methodology is lost using electromagnetic wave as described above
Survey electromagnetic wave penetration loss value；
According to the transmission power of the transmitting antenna, the antenna gain of transmitting antenna, the antenna gain of reception antenna and institute
State the inside field strength that electromagnetic wave loss determines the objective body.
Above-mentioned field intensity prediction method, the problem of conventional art is true to the inside field strength forecasting inaccuracy of objective body is overcome, it is real
The Accurate Prediction of the radio field intensity to the inside of objective body is showed.
A kind of radio field intensity forecasting system is also provided, the system includes：
Parameter acquisition module, for obtaining the transmission power of electromagnetic wave transmitting antenna, the antenna gain of transmitting antenna and connecing
Receive the antenna gain of antenna；Wherein, the reception antenna is located at the inside of objective body；
Prediction module is lost, for obtaining the electromagnetic wave loss value of the objective body；Wherein, the electromagnetic wave loss includes
Electromagnetic wave penetration loss value, electromagnetic wave internal communication loss value and electromagnetic wave external communication loss value, utilize electricity as described above
Magnetic wave loss Forecasting Methodology prediction electromagnetic wave penetration loss value；
Field intensity prediction module, for the transmission power according to the transmitting antenna, the antenna gain of transmitting antenna, receive day
The inside field strength of the objective body is predicted in the antenna gain of line and electromagnetic wave loss.
Above-mentioned radio field intensity forecasting system, overcomes that conventional art is true to the inside field strength forecasting inaccuracy of objective body to ask
Topic, realize the Accurate Prediction of the radio field intensity to the inside of objective body.
A kind of computer equipment, including memory, processor and be stored on the memory and can be in the processing
The computer program run on device, realized described in the computing device during computer program such as above-mentioned electromagnetic wave loss prediction side
Method or radio field intensity Forecasting Methodology.
Above computer equipment, by the computer program run on the processor, realize electromagnetic wave is lost into
Row Accurate Prediction, improve the accuracy of the radio field intensity inside prediction objective body.
A kind of computer-readable storage medium, is stored thereon with computer program, is realized as above when the program is executed by processor
State electromagnetic wave loss Forecasting Methodology or radio field intensity Forecasting Methodology.
Above computer storage medium, by the computer program of its storage, realize and electromagnetic wave loss is carried out accurately
Prediction, improve the accuracy of the radio field intensity inside prediction objective body.
Brief description of the drawings
Fig. 1 is the flow chart of the electromagnetic wave loss Forecasting Methodology in one embodiment；
Fig. 2 is the schematic diagram of the Electromagnetic Wave Propagation in one embodiment；
Fig. 3 is the structural representation of the electromagnetic wave loss forecasting system in one embodiment；
Fig. 4 is the flow chart of the radio field intensity Forecasting Methodology in one embodiment；
Fig. 5 is the structural representation of the radio field intensity forecasting system in one embodiment.
Embodiment
The embodiment of the electromagnetic wave loss Forecasting Methodology of the present invention is described in detail below in conjunction with the accompanying drawings.
In one embodiment, there is provided Forecasting Methodology is lost in a kind of electromagnetic wave, and with reference to shown in figure 1, Fig. 1 is one embodiment
In electromagnetic wave loss Forecasting Methodology flow chart, this method may include steps of：
Step S101, according to the feature information extraction external structure parameter of the objective body where electromagnetic wave receiving point.
In this step, the characteristic information of objective body generally comprises the structure feature information for forming objective body and material is special
Reference breath etc., the architectural feature of objective body further comprises inner structural features and external structural characteristics, because features described above is believed
Breath can accurately reflect the target body characteristicses related to electromagnetic field, so mainly extraction is outer from the characteristic information of objective body for this step
Portion's structural parameters.
By taking building as an example, the characteristic information of building includes external wall structure feature and internal structure feature, exterior wall knot
Structure is generally characterized by referring to profile, building height and window accounting of building etc., and internal structure feature can be interior of building
Wall barrier type etc..
In addition, the method for obtaining the characteristic information of objective body there are many kinds, such as obtain and be somebody's turn to do from the database of objective body
The characteristic information of objective body, correlation predictive method can also be utilized to be scanned prediction to the feature of wall so as to obtain objective body
Characteristic information.
Step S102, determine that the perforate proportionality coefficient of the objective body and perforate material are damaged according to the external structure parameter
Consume coefficient.
Wherein, external structure parameter generally comprises the exterior geometry of objective body and outside material, can utilize target
The exterior geometry of body determines the perforate ratio of objective body, and perforate ratio refers to the ratio outside objective body shared by perforate, opened
Hole material refers to material used in perforate.By taking building as an example, perforate ratio is the wall of building shared by the forms of building
The ratio of body, and perforate material then corresponds to the material of the forms of building body.
Because the loss all to electromagnetic wave of perforate ratio and perforate material of objective body all has an impact, this step is according to target
The external structure parameter of body determines the perforate proportionality coefficient and perforate material loss factor of objective body, it is possible to increase prediction objective body
Electromagnetic wave loss accuracy.
Step S103, system is lost according to the outside material of the perforate proportionality coefficient, perforate material loss factor, objective body
The incident angle of number and electromagnetic wave obtains the electromagnetic wave penetration loss value of the objective body.
Beyond boring ratio example, the outside material of objective body can also cause necessarily to influence on electromagnetic wave propagation, with building
Exemplified by thing, the outer wall material selected by building can reduce field strength when Electromagnetic Wave Propagation passes through, and a setting loss is produced to electromagnetic wave
Consumption.
This step is mainly to be using the outside material loss of perforate proportionality coefficient, perforate material loss factor, objective body
The incident angle of number and electromagnetic wave obtains the electromagnetic wave penetration loss value of the objective body, according to the perforate of objective body, outside
Three parameters of material and incident angle determine penetration loss of the objective body to electromagnetic wave, improve the accuracy of electromagnetic wave prediction.
In one embodiment, step S103 may include steps of：According to the perforate ratio of the objective body, outside
The incident angle of material, perforate material and electromagnetic wave builds the penetration loss model of the objective body；By opening for the objective body
Hole proportionality coefficient, outside material loss factor, perforate material loss factor and electromagnetic wave incident angle input described in penetrate damage
Consume model and obtain the electromagnetic wave penetration loss value.
Above-described embodiment is using described in the perforate ratio of objective body, outside material, perforate material and incident angle structure
The penetration loss model of objective body, will perforate proportionality coefficient corresponding with perforate ratio, outside material corresponding with outside material
Loss factor, perforate material loss factor corresponding with perforate material and electromagnetic wave incident angle are input to above-mentioned penetration loss mould
In type, the penetration loss value of objective body is obtained.
Because the model is built using parameters such as perforate ratio, outside material and the perforate materials of objective body, and mesh
Perforate ratio, outside material and the perforate material of standard type can accurately reflect influence of the objective body to electromagnetic transmission, further
, the influence that the electromagnetic wave of objective body is lost due to also contemplating electromagnetic wave incident angle, therefore utilize the penetration loss mould
Type is capable of the loss value of Accurate Prediction electromagnetic wave.
In order to further improve the accuracy of prediction electromagnetic wave loss value, in one embodiment, above-mentioned penetration loss mould
Type can include：
Wherein, LpenThe electromagnetic wave penetration loss is represented, p represents the perforate proportionality coefficient, LwRepresent the outside material
Matter loss factor, LgThe perforate material loss factor is represented, θ represents the incident angle of the electromagnetic wave, LvFor the additional of setting
Penetration loss value, α are the index parameter of setting.
Below by taking building as an example, each parameter of the breakthrough model of the present embodiment is illustrated, p can represent building
Windowing ratio, generally refer to window area account for building alien invasion percentage；LwTypically represent the exterior wall of building
Loss, LwValue it is relevant with the material of the exterior wall of building, generally 10~20dB；LgThe window of building can be represented
Loss, typically takes 1~2dB.
In addition, the technical scheme that above-described embodiment provides also further contemplates electromagnetic wave and incides target with different angle
Loss value caused by body.Additional penetration loss value L based on settingVAnd the index parameter α of setting, above-mentioned wear can be utilized
Saturating loss model calculates incides loss value caused by objective body in electromagnetic wave with different angle.Wherein, penetration loss is added
Value generally refers to the additional penetration loss value when incidence angle tends to 0, and representative value 20dB, index parameter α value can take 2~
Value between 4.
With reference to shown in figure 2, Fig. 2 is the schematic diagram of the Electromagnetic Wave Propagation in one embodiment, in general, can be according to electricity
The position of the emission source of magnetic wave and the position of objective body determine the incident direction of electromagnetic wave so as to obtain the incidence angle of electromagnetic wave
Degree, such as the incident angle of the θ angles expression objective body shown in Fig. 2.
The technical scheme provided using above-described embodiment, it is capable of the electromagnetic wave loss value of Accurate Prediction objective body, moreover it is possible to
Loss value of the objective body to electromagnetic wave is predicted under the incident angle of different electromagnetic waves, further increases the accuracy of prediction.
, in one embodiment, can be with order to further improve the accuracy of the electromagnetic wave loss value of prediction objective body
Following manner obtains the internal transmission loss of the electromagnetic wave of objective body：
The internal structure parameter of objective body is extracted from the characteristic information of the objective body, according to the internal structure parameter
Obtain the internal loss coefficient of the objective body；
The internal transmission distance of electromagnetic wave is determined according to the position of the receiving point, according to the internal transmission distance and interior
Portion's loss factor obtains electromagnetic wave internal communication loss value.
In general, the internal structure difference of objective body can cause electromagnetic wave objective body internal communication loss not yet
Together.The present embodiment is mainly that the internal loss coefficient of objective body is determined according to the internal structure parameter of objective body, using building as
There is different wall barrier types example, the inside of different buildings, and transmission of the different wall barrier types to electromagnetic wave has
Different influences, moreover, internal transmission loss of the electromagnetic wave in objective body internal transmission is relevant with the position of receiving point, such as
Receiving point is different from the distance of the outside of objective body, also different to being lost caused by electromagnetic wave.
Therefore, the technical scheme that above-described embodiment provides obtains electricity according to the internal transmission distance and internal loss coefficient
Magnetic wave internal communication loss value, it can further improve the accuracy of the electromagnetic wave loss value of prediction objective body.
In one embodiment, electromagnetic wave internal communication loss value further can be calculated using equation below：
Lindoor=β d1
Wherein, LindoorThe electromagnetic wave internal communication loss value is represented, β represents the internal loss coefficient, d1Represent institute
State internal transmission distance, unit m.
With reference to figure 2, the d in the present embodiment1The receiving point of electromagnetic wave can be represented to the relative distance of the outside of objective body,
The distance is typically according to the determination of the position of receiving point and target point, unit m.For clearer and more definite β concrete meaning, with building body
Exemplified by, reference table 1, table 1 represents loss factor reference value corresponding to the interior separations type of different buildings, wherein, it is internal every
Disconnected type is defined as follows：
Intensive cut-off：Interior of building has intensive brick to mix class solid wall cut-off, and interior wall spacing is within 5m；
Medium cut-off：Interior of building has more solid wall cut-off, and interior wall spacing is between 5-10m；
Few cut-off：Internal wall barrier spacing is in more than 10m, or the light body wall cut-off of only larger spacing；
Without cut-off：Interior of building is open, without wall barrier.
| Type | Intensive cut-off | Medium cut-off | Few cut-off | Without cut-off |
| β(dB/m) | 3 | 1.5 | 0.7 | 0.5 |
Table 1
The technical scheme provided using the present embodiment, it can further improve the standard of the electromagnetic wave loss value of prediction objective body
True property.
In view of electromagnetic wave from the free space transmission of objective body to the transmission loss of objective body, in one embodiment,
The external communication loss that sharp can obtain electromagnetic wave with the following method：
The positional information of electromagnetic wave emission source is obtained, the outside transmission range of electromagnetic wave is determined according to the positional information；
Wherein, the outside transmission range is the distance that electromagnetic wave propagates to the objective body from the emission source of electromagnetic wave；According to described
The frequency values of outside transmission range and electromagnetic wave obtain the external communication loss value of electromagnetic wave.
With reference to figure 2, in the present embodiment, outside transmission range d2Refer to electromagnetic wave from source position to objective body away from
From, the distance it can be appreciated that the transmission range of electromagnetic wave in free space, by taking building as an example, the outside transmission range
The emission source of electromagnetic wave is generally referred to the distance of the exterior wall of building.Electricity is determined according to outside transmission range and wave frequency
The external communication loss value of magnetic wave.
In one embodiment, electromagnetic wave external communication loss value further can be calculated using equation below：
Lf=32.4+20lg f+20lg d2
Wherein, LfThe electromagnetic wave external communication loss value is represented, f represents the frequency values of the electromagnetic wave, d2Described in expression
Outside transmission range.
The present embodiment is mainly calculated using the external communication distance of electromagnetic wave and the frequency values of electromagnetic wave and passed outside electromagnetic wave
Loss value is broadcast, f unit is MHz, d2Unit be km.
The technical scheme provided using the present embodiment, can accurately obtain the electricity that electromagnetic wave is transferred to objective body from emission source
Magnetic wave loss value, further increase the accuracy of prediction electromagnetic wave loss value.
The electromagnetic wave loss Forecasting Methodology that any one above-mentioned embodiment of the present invention provides, from the characteristic information of objective body
The external structure parameter of objective body is extracted, and determines that the perforate ratio of objective body and perforate material are lost according to external structure parameter
Coefficient, entered according to outside the material loss factor and electromagnetic wave of perforate proportionality coefficient, perforate material loss factor, objective body
Firing angle degree obtains electromagnetic wave penetration loss value, the method overcome the problem of conventional art electromagnetic wave loss forecasting inaccuracy is true, real
Show electromagnetic wave is lost and carried out Accurate Prediction, improved the accuracy of the radio field intensity inside prediction objective body.
It there is a need to and the problem of forecasting inaccuracy is true is lost for conventional art electromagnetic wave, there is provided a kind of electromagnetic wave loss prediction
System, in one embodiment, with reference to figure 3, Fig. 3 is the structural representation of the electromagnetic wave loss forecasting system in one embodiment
Figure, the system can include：
Parameter extraction module 101, for being tied outside the feature information extraction according to the objective body where electromagnetic wave receiving point
Structure parameter；
Coefficient determination module 102, for determining the perforate proportionality coefficient of the objective body according to the external structure parameter
With perforate material loss factor；
Acquisition module 103 is lost, for according to the perforate proportionality coefficient, perforate material loss factor, objective body it is outer
The incident angle of portion's material loss factor and electromagnetic wave obtains the electromagnetic wave penetration loss value of the objective body.
Forecasting system is lost in above-mentioned electromagnetic wave, and mesh is extracted from the characteristic information of objective body using parameter extraction module 101
The external structure parameter of standard type, by coefficient determination module 102 according to external structure parameter determine objective body perforate ratio and
Perforate material loss factor, using acquisition module 103 is lost according to perforate proportionality coefficient, perforate material loss factor, objective body
Outside material loss factor and electromagnetic wave incident angle obtain electromagnetic wave penetration loss value, this system overcomes traditional skill
The problem of art electromagnetic wave loss forecasting inaccuracy is true, realizes and carries out Accurate Prediction to electromagnetic wave loss value, improve prediction target
The accuracy of the radio field intensity in internal portion.
The electromagnetic wave loss Forecasting Methodology of the electromagnetic wave loss forecasting system of the present invention and the present invention corresponds, above-mentioned
The technical characteristic and its advantage that the embodiment of electromagnetic wave loss Forecasting Methodology illustrates are applied to electromagnetic wave loss prediction system
In the embodiment of system, hereby give notice that.
In addition, being directed to the problem of radio field intensity forecasting inaccuracy is true, the present invention also provides a kind of radio field intensity prediction side
Method, in one embodiment, with reference to figure 4, Fig. 4 is the flow chart of the radio field intensity Forecasting Methodology in one embodiment, the party
Method may include steps of：
Step S201, obtain the transmission power of the transmitting antenna of electromagnetic wave, the antenna gain of transmitting antenna and reception antenna
Antenna gain；Wherein, the reception antenna is located at the inside of objective body；
Step S202, obtain the electromagnetic wave loss value of the objective body；Wherein, electromagnetic wave loss includes electromagnetic wave and worn
Saturating loss value, electromagnetic wave internal communication loss value and electromagnetic wave external communication loss value, are lost using electromagnetic wave as described above
Forecasting Methodology predicts electromagnetic wave penetration loss value；
Step S203, according to the transmission power of the transmitting antenna, the antenna gain of transmitting antenna, reception antenna antenna
Gain and electromagnetic wave loss determine the inside field strength of the objective body.
Because radio field intensity is relevant with multiple parameters, these generally comprise the transmitting antenna of electromagnetic wave transmission power,
The loss value of the antenna gain of transmitting antenna, the antenna gain of reception antenna and electromagnetic wave.Wherein, the standard of the loss value of electromagnetic wave
True property influences very big on the forecasting accuracy of radio field intensity.
The present embodiment is mainly that Forecasting Methodology is lost by the electromagnetic wave described in as above any embodiment to predict that electromagnetic wave is worn
Saturating loss value, it is to be understood that above-described embodiment, which is also provided that, to be obtained outside electromagnetic wave internal communication loss value and electromagnetic wave
The technical scheme of portion's propagation loss value.
Specifically, the inside field strength of the objective body can be calculated by following equation：
Pr=Pt+Gt+Gr-Lpen-Lindoor-Lf
Wherein, PrRepresent the inside field strength of the objective body, PtRepresent the transmission power of transmitting antenna, GtRepresent transmitting day
The antenna gain of line, GrRepresent the antenna gain of reception antenna, LpenRepresent electromagnetic wave penetration loss value, LindoorRepresent electromagnetic wave
Internal communication loss value, LfRepresent electromagnetic wave external communication loss value.
The radio field intensity Forecasting Methodology provided using the present embodiment, it is capable of the electromagnetic wave of the inside of Accurate Prediction objective body
Field strength.The above method is applied among the prediction of indoor radio field intensity of building, the interior of energy Accurate Prediction building
Field strength, and then planning and designing for wireless network and signal covering provide support.
In one embodiment, a kind of radio field intensity forecasting system is also provided, with reference to figure 5, Fig. 5 is in one embodiment
Radio field intensity forecasting system structural representation, the system can include：
Parameter acquisition module 201, for obtain the transmission power of electromagnetic wave transmitting antenna, the antenna gain of transmitting antenna and
The antenna gain of reception antenna；Wherein, the reception antenna is located at the inside of objective body；
Prediction module 202 is lost, for obtaining the electromagnetic wave loss value of the objective body；Wherein, the electromagnetic wave loss
Including electromagnetic wave penetration loss value, electromagnetic wave internal communication loss value and electromagnetic wave external communication loss value, using as described above
Electromagnetic wave loss Forecasting Methodology prediction electromagnetic wave penetration loss value；
Field intensity prediction module 203, for the transmission power according to the transmitting antenna, the antenna gain of transmitting antenna, connect
Receive the antenna gain of antenna and the inside field strength of the objective body is predicted in electromagnetic wave loss.
The radio field intensity forecasting system provided using the present embodiment, it is capable of the electromagnetic wave of the inside of Accurate Prediction objective body
Field strength.Said system is applied among the prediction of indoor radio field intensity of building, the interior of energy Accurate Prediction building
Field strength, and then planning and designing for wireless network and signal covering provide support.
The radio field intensity Forecasting Methodology of the radio field intensity forecasting system of the present invention and the present invention corresponds, above-mentioned
The technical characteristic and its advantage that the embodiment of radio field intensity Forecasting Methodology illustrates are applied to radio field intensity prediction system
In the embodiment of system, hereby give notice that.
In one embodiment, a kind of computer equipment is also provided, the computer equipment includes memory, processor and deposited
Storage on a memory and the computer program that can run on a processor, wherein, realization is as above during computing device described program
State any one Forecasting Methodology in each embodiment.
In addition, one of ordinary skill in the art will appreciate that realize all or part of flow in above-described embodiment method,
It is that by computer program the hardware of correlation can be instructed to complete, described program can be stored in a non-volatile calculating
In machine read/write memory medium, in the embodiment of the present invention, the program can be stored in the storage medium of computer system, and by
At least one computing device in the computer system, to realize the flow for including the embodiment such as above-mentioned Forecasting Methodology.
The computer equipment, during its computing device program, by realize in each embodiment as described above any one is pre-
Survey method, realize to electromagnetic wave be lost carry out Accurate Prediction, improve prediction objective body inside radio field intensity it is accurate
Property.
In one embodiment, a kind of storage medium is also provided, is stored thereon with computer program, wherein, the program quilt
Any one Forecasting Methodology in each embodiment as described above is realized during computing device.Wherein, described storage medium can be magnetic
Dish, CD, read-only memory (Read-Only Memory, ROM) or random access memory (Random Access
Memory, RAM) etc..
The computer-readable storage medium, its computer program stored, the reality of each Forecasting Methodology as described above is included by realizing
Apply the flow of example, realize that electromagnetic wave is lost and carry out Accurate Prediction, improve the radio field intensity inside prediction objective body
Accuracy.
Embodiment described above only expresses the several embodiments of the present invention, and its description is more specific and detailed, but simultaneously
Can not therefore it be construed as limiting the scope of the patent.It should be pointed out that come for one of ordinary skill in the art
Say, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the protection of the present invention
Scope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (10)
1. Forecasting Methodology is lost in a kind of electromagnetic wave, it is characterised in that including step：
According to the feature information extraction external structure parameter of the objective body where electromagnetic wave receiving point；
The perforate proportionality coefficient and perforate material loss factor of the objective body are determined according to the external structure parameter；
According to the perforate proportionality coefficient, perforate material loss factor, objective body outside material loss factor and electromagnetic wave
Incident angle obtain the electromagnetic wave penetration loss value of the objective body.
2. Forecasting Methodology is lost in electromagnetic wave according to claim 1, it is characterised in that described according to the perforate ratio system
Number, the incident angle of outside material loss factor and electromagnetic wave of perforate material loss factor, objective body obtain the target
The step of electromagnetic wave penetration loss value of body：
The target is built according to the incident angle of the perforate ratio of the objective body, outside material, perforate material and electromagnetic wave
The penetration loss model of body；
By entering for the perforate proportionality coefficient of the objective body, outside material loss factor, perforate material loss factor and electromagnetic wave
Firing angle degree inputs the penetration loss model and obtains the electromagnetic wave penetration loss value.
3. Forecasting Methodology is lost in electromagnetic wave according to claim 2, it is characterised in that the penetration loss model includes：
<mrow>
<msub>
<mi>L</mi>
<mrow>
<mi>p</mi>
<mi>e</mi>
<mi>n</mi>
</mrow>
</msub>
<mo>=</mo>
<mo>-</mo>
<mn>10</mn>
<mi>lg</mi>
<mo>&lsqb;</mo>
<mrow>
<mo>(</mo>
<mn>1</mn>
<mo>-</mo>
<mi>p</mi>
<mo>)</mo>
</mrow>
<msup>
<mn>10</mn>
<mrow>
<mo>-</mo>
<msub>
<mi>L</mi>
<mi>w</mi>
</msub>
<mo>/</mo>
<mn>10</mn>
</mrow>
</msup>
<mo>+</mo>
<mi>p</mi>
<msup>
<mn>10</mn>
<mrow>
<mo>-</mo>
<msub>
<mi>L</mi>
<mi>g</mi>
</msub>
<mo>/</mo>
<mn>10</mn>
</mrow>
</msup>
<mo>&rsqb;</mo>
<mo>+</mo>
<msub>
<mi>L</mi>
<mi>v</mi>
</msub>
<msup>
<mrow>
<mo>(</mo>
<mn>1</mn>
<mo>-</mo>
<mi>s</mi>
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<mi>&theta;</mi>
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<mi>&alpha;</mi>
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</mrow>
Wherein, LpenThe electromagnetic wave penetration loss is represented, p represents the perforate proportionality coefficient, LwRepresent the outside material damage
Consume coefficient, LgThe perforate material loss factor is represented, θ represents the incident angle of the electromagnetic wave, LvAdditional for setting penetrates
Loss value, α are the index parameter of setting.
4. the electromagnetic wave loss Forecasting Methodology according to any one of claims 1 to 3, it is characterised in that also including step：
The internal structure parameter of objective body is extracted from the characteristic information of the objective body, according to the internal structure parameter acquiring
The internal loss coefficient of the objective body；
The internal transmission distance of electromagnetic wave is determined according to the position of the receiving point, according to the internal transmission distance and internal exergy dissipation
Consumption coefficient obtains electromagnetic wave internal communication loss value.
5. Forecasting Methodology is lost in electromagnetic wave according to claim 4, it is characterised in that it is described according to the internal transmission away from
Include from the step of obtaining the loss of electromagnetic wave internal communication with internal loss coefficient：
Electromagnetic wave internal communication loss value is calculated using equation below：
Lindoor=β d1
Wherein, LindoorThe electromagnetic wave internal communication loss value is represented, β represents the internal loss coefficient, d1In representing described
Portion's transmission range.
6. the electromagnetic wave loss Forecasting Methodology according to any one of claims 1 to 3, it is characterised in that also including step：
The positional information of electromagnetic wave emission source is obtained, the outside transmission range of electromagnetic wave is determined according to the positional information；Wherein,
The outside transmission range is the distance that electromagnetic wave propagates to the objective body from the emission source of electromagnetic wave；
The external communication loss value of electromagnetic wave is obtained according to the frequency values of the outside transmission range and electromagnetic wave.
7. Forecasting Methodology is lost in electromagnetic wave according to claim 6, it is characterised in that described according to the outside transmission distance
The step of obtaining the external communication loss value of electromagnetic wave from the frequency values with electromagnetic wave includes：
Electromagnetic wave external communication loss value is calculated using equation below：
Lf=32.4+20lg f+20lg d2
Wherein, LfThe electromagnetic wave external communication loss value is represented, f represents the frequency values of the electromagnetic wave, d2Represent the outside
Transmission range.
8. a kind of radio field intensity Forecasting Methodology, it is characterised in that including step：
Obtain the antenna gain of the transmission power of transmitting antenna of electromagnetic wave, the antenna gain of transmitting antenna and reception antenna；Its
In, the reception antenna is located at the inside of objective body；
Obtain the electromagnetic wave loss value of the objective body；Wherein, the electromagnetic wave loss includes electromagnetic wave penetration loss value, electromagnetism
Ripple internal communication loss value and electromagnetic wave external communication loss value, damaged using the electromagnetic wave as described in any one of claims 1 to 3
Consume Forecasting Methodology prediction electromagnetic wave penetration loss value；
According to the transmission power of the transmitting antenna, the antenna gain of transmitting antenna, the antenna gain of reception antenna and the electricity
Magnetic wave loss value determines the inside field strength of the objective body.
9. forecasting system is lost in a kind of electromagnetic wave, it is characterised in that including：
Parameter extraction module, for the feature information extraction external structure parameter according to the objective body where electromagnetic wave receiving point；
Coefficient determination module, for determining the perforate proportionality coefficient and perforate material of the objective body according to the external structure parameter
Matter loss factor；
Acquisition module is lost, for being damaged according to the outside material of the perforate proportionality coefficient, perforate material loss factor, objective body
Consume the electromagnetic wave penetration loss value of the incident angle acquisition objective body of coefficient and electromagnetic wave.
A kind of 10. radio field intensity forecasting system, it is characterised in that including：
Parameter acquisition module, for obtaining the transmission power of electromagnetic wave transmitting antenna, the antenna gain of transmitting antenna and receiving day
The antenna gain of line；Wherein, the reception antenna is located at the inside of objective body；
Prediction module is lost, for obtaining the electromagnetic wave loss value of the objective body；Wherein, the electromagnetic wave loss includes electromagnetism
Ripple penetration loss value, electromagnetic wave internal communication loss value and electromagnetic wave external communication loss value, appointed using such as claims 1 to 3
Electromagnetic wave loss Forecasting Methodology prediction electromagnetic wave penetration loss value described in one；
Field intensity prediction module, for transmission power according to the transmitting antenna, the antenna gain of transmitting antenna, reception antenna
Antenna gain and the electromagnetic wave loss value predict the inside field strength of the objective body.
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