CN101957890B - Digital model-based method for optimizing and allocating electromagnetic compatibility indexes - Google Patents
Digital model-based method for optimizing and allocating electromagnetic compatibility indexes Download PDFInfo
- Publication number
- CN101957890B CN101957890B CN2010102742883A CN201010274288A CN101957890B CN 101957890 B CN101957890 B CN 101957890B CN 2010102742883 A CN2010102742883 A CN 2010102742883A CN 201010274288 A CN201010274288 A CN 201010274288A CN 101957890 B CN101957890 B CN 101957890B
- Authority
- CN
- China
- Prior art keywords
- expend
- effectiveness
- equipment
- disturbed
- index
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
The invention discloses a digital model-based method for optimizing and allocating electromagnetic compatibility indexes. The technical scheme comprises the following steps of: analyzing the frequency of interference frequency points and simulating by using a computer to obtain an overall reformation index; optimizing and simulating adjustable factors, and combining the actual expense required in the engineering to obtain a digital model of a utility-expense ratio relation; extracting marginal utility curves of the adjustable factors based on the model; and obtaining the optimal allocation indexes according to an equimarginal utility principle. In the index allocation, the marginal utility of each reformation factor is extracted according to the utility-expense ratio relation in the process of reforming each factor of three electromagnetic compatibility factors. According to a principle that the marginal utility of the reformation effect is gradually decreased in the practical situation, under the condition that the sum of sub-indexes meets the requirement of an overall index, when the marginal utility of each factor is equal, the optimum effect of the index allocation can be achieved.
Description
Technical field
The present invention relates to the method that a kind of electromagnetic compatibility index is distributed, specifically, is a kind ofly to come the electromagnetic compatibility index is optimized distribution method in conjunction with principle of maximum utility based on digital model.
Background technology
The airborne communication plateform system comprises many cover transmitting and receiving apparatus, powerful transmitter and highly sensitive receiver all are installed in the limited space, electromagnetic signal is intensive, so that in this local space, may form serious phase mutual interference between communication facilities, cause the communication device works hydraulic performance decline.In order to improve Electro Magnetic Compatibility, usually will be from the electromagnetic compatibility three elements: jamming equipment, interference channel, disturbed equipment be set about.For general electronic and electrical equipment, to through after electromagnetic compatibility prediction, emulation, analysis, the test, carry out rectifying and improving for the frequency that electromagnetic compatibility problem occurs, need totally to rectify and improve in the capable of regulating key element that index is assigned to whole interference and coupling path and go.In the rectification of in the past electromagnetic compatibility, the allocation criterion that does not clearly quantize so that for the index of distributing in implementation process, be difficult to reach optimization.
Summary of the invention
The objective of the invention is to propose a kind of electromagnetic compatibility index optimization distribution method based on digital model, this electromagnetic compatibility index is distributed based on a kind of based on the method for digital model in conjunction with principle of maximum utility, digital model is to change information changeable in many complication systems into can measure numeral, data, set up model with these numerals, data again, as the supportive model for further data mining.In the method, for related effectiveness during the rectification of each key element in the electromagnetic compatibility three elements-expend the digital model than relation, extract the wherein marginal utility of each rectification key element.According to the principle of rectification effect deminishing marginal utility in the actual conditions, each minute the index sum meet in the situation that overall objective requires, when the marginal utility of each key element equates, the optimization effect that can touch the mark and distribute.
A kind of electromagnetic compatibility index optimization distribution method based on digital model of the present invention, its distribution method is for related effectiveness during the rectification of each key element in the electromagnetic compatibility three elements-expend the digital model than relation, extracts that wherein each can rectify and improve the marginal utility of key element; Then according to the principle of rectification effect deminishing marginal utility in the actual conditions, each minute the index sum meet in the situation that overall objective requires, when the marginal utility of each key element equates, the optimization effect that touches the mark and distribute; The index optimization distribution includes following four treatment steps:
First step: the frequency of Analysis interference frequency also obtains rectifying and improving overall objective by Computer Simulation;
Second step: each capable of regulating key element is optimized emulation, and incorporation engineering is actual, match effectiveness-expend than concerning digital model;
Third step: the marginal cost curves of extracting each capable of regulating key element;
The 4th step: the marginal utility theories such as foundation draw the optimal allocation index.
Description of drawings
Fig. 1 makes up each can rectify and improve key element effectiveness-expend than concerning digital model figure.
Fig. 2 is that each can rectify and improve key element deminishing marginal utility graph of a relation.
Fig. 3 is the marginal effect principle figure such as the present invention.
Fig. 4 is rectification index distribution diagram under the marginal effect such as the present invention.
Embodiment
The present invention is described in further detail below in conjunction with accompanying drawing.
A kind of electromagnetic compatibility index optimization distribution method based on digital model of the present invention, carrying out index optimization by four steps distributes, in the method, for related effectiveness during the rectification of each key element in the electromagnetic compatibility three elements-expend the digital model than relation, extract the wherein marginal utility of each rectification key element.According to the principle of rectification effect deminishing marginal utility in the actual conditions, each minute the index sum meet in the situation that overall objective requires, when the marginal utility of each key element equates, the optimization effect that can touch the mark and distribute.Four steps refer to:
First step: the frequency of Analysis interference frequency also obtains rectifying and improving overall objective by Computer Simulation;
Second step: each capable of regulating key element is optimized emulation, and incorporation engineering is actual, match effectiveness-expend than concerning digital model;
Third step: the marginal cost curves of extracting each key element;
The 4th step: the marginal utility theories such as foundation draw the optimal allocation index.
The below will be described in detail the processing of each step:
The first step: the frequency of Analysis interference frequency also obtains rectifying and improving overall objective by Computer Simulation
Under the working environment of making an uproar, the band of jamming equipment is launched P outward
tWhen falling within the disturbed equipment working band scope, will produce potential interference to disturbed equipment may.When the outer emission of this band will be passed through jamming equipment cable waste A
Tl, jamming equipment antenna gain G
t, spatial attenuation A
Space, disturbed device antenna gain G
r, disturbed equipment cable waste A
RlCan to the interference of disturbed equipment generation port, can get the link noise interference relationships formula of dB (energy unit of noise) formal representation Deng 5 processes:
P
i＝P
t-A
tl+G
t-A
space+G
r-A
rl (1)
As the link noise P of equivalence to disturbed equipment input port
i(disturb P referred to as equivalent noise
i) when surpassing the interference threshold NT of disturbed equipment, disturbed equipment will be interfered.And P
i-be exactly always system that NT will rectify and improve rectifies and improves index T, i.e. T=P
i-NT;
Utilize computer simulation software ADS (2008U2 version) that jamming equipment, transmission line, disturbed equipment are carried out modeling and simulating, obtain being with outer emission P
t, jamming equipment cable waste A
Tl, disturbed equipment cable waste A
RlAnd four values such as disturbed equipment interference threshold NT.Utilize computer simulation software FEKO (5.4 editions) that transmitting-receiving two-end antenna, space transmission are carried out modeling and simulating and can be obtained the transmitter antenna gain G
t, spatial attenuation A
Space, disturbed device antenna gain G
rUtilize formula (1), the equivalent noise that can obtain disturbed equipment input port is disturbed P
i, the system that further can obtain needing to adjust always rectifies and improves index T, wherein
T＝P
i-NT＝P
t-A
tl+G
t-A
space+G
r-A
rl-NT (2)
In this step, can predict quantitatively the electromagnetic compatibility overall objective of accurate numerical value, and this electromagnetic compatibility overall objective is assigned to seven (the outer emission of band P
t, jamming equipment cable waste A
Tl, jamming equipment antenna gain G
t, spatial attenuation A
Space, disturbed device antenna gain G
r, disturbed equipment cable waste A
Rl, disturbed equipment interference threshold NT) can distribute in the capable of regulating key element of electromagnetic compatibility index and go.
Second step: each capable of regulating key element is optimized emulation, and incorporation engineering is actual, match effectiveness-expend than concerning digital model
By formula (1) as can be known: on the one hand when reducing to be with outer emission P
t, jamming equipment antenna gain G
t, disturbed device antenna gain G
rOn the other hand when increasing jamming equipment transmission line cable waste A
Tl, spatial attenuation A
Space, disturbed device transmission line cable waste A
Rl, during disturbed equipment interference threshold NT, all can be of value to the Electro Magnetic Compatibility of improvement system, divide timing just system always need to be rectified and improved index T in index and be assigned in above seven concrete capable of regulating key elements and go.It is as follows that system always rectifies and improves index relations of distribution formula:
T＝(-ΔP
t)+ΔA
tl+(-ΔG
t)+ΔA
space+(-ΔG
r)+ΔA
rl+ΔNT
＝-(ΔP
t+ΔG
t+ΔG
r)+ΔA
tl+ΔA
space+ΔA
rl+ΔNT (3)
Make T
1=(Δ P
t), T
2=Δ A
Tl, T
3=(Δ G
t), T
4=Δ A
Space, T
5=(Δ G
r), T
6=Δ A
Rl, T
7=Δ NT, then system always rectifies and improves the index relations of distribution and is simplified shown as:
T＝T
1+T
2+T
3+T
4+T
5+T
6+T
7 (4)
In the formula ,-Δ P
tThe band of expression jamming equipment is launched indicator of distribution outward, Δ A
TlThe Loss allocation index of the transmission line cable of expression jamming equipment ,-Δ G
tThe antenna gain indicator of distribution of expression jamming equipment, Δ A
SpaceThe spatial attenuation indicator of distribution of expression interference channel ,-Δ G
rRepresent disturbed device antenna gain indicator of distribution, Δ A
RlShow in the Loss allocation index of the transmission line cable of disturbed equipment, Δ NT shows the interference threshold indicator of distribution in disturbed equipment.
For above seven capable of regulating key elements, each capable of regulating key element has specific engineering characteristic, comprises the interference characteristic of jamming equipment, the isolation characteristic of interference channel, the sensitivity characteristic of disturbed equipment.
In the present invention-Δ P
tCharacteristic for improving this class feature, generally can be taked: be with outer filtering, strengthen the cabinet shield effectiveness, the measures to rectify and reform such as good earth.These different measures to rectify and reform effects are not quite similar, thus according to corresponding measure in computer simulation software ADS to the Practical Project capable of regulating measure carry out emulation checking and draw the effectiveness of adjustment-expend ratio.With the effectiveness of these measures to rectify and reform-expend curve to sort from big to small according to its ratio, form and launch P outward for the band of jamming equipment
tThe effectiveness of rectifying and improving-expend and compare curve U
1(C), i.e. the first effectiveness-expend and compare curve U
1(C).
Δ A in the present invention
TlCharacteristic, for improving this class feature, generally can adopt the replacing transmission cable, the outer attenuating of reinforcing band, the measures to rectify and reform such as wire cable layout on the optimization machine, these different measures to rectify and reform effects are not quite similar, thus according to corresponding measure in computer simulation software ADS to the Practical Project capable of regulating measure carry out emulation checking and draw the effectiveness of adjustment-expend ratio.With the effectiveness of these measures to rectify and reform-expend curve to sort from big to small according to its ratio, form for jamming equipment transmission line cable waste A
TlThe effectiveness of rectifying and improving-expend and compare curve U
2(C), i.e. the second effectiveness-expend and compare curve U
2(C).
In the present invention-Δ G
tCharacteristic (isolation), for improving this class feature, generally can adopt and change antenna type or adopt antenna array, improve antenna radiation pattern, reinforcing band suppresses to subtract the measures to rectify and reform such as effect, these different measures to rectify and reform effects are not quite similar, thus according to corresponding measure in computer simulation software FEKO to the Practical Project capable of regulating measure carry out emulation checking and draw the effectiveness of adjustment-expend ratio.With the effectiveness of these measures to rectify and reform-expend curve to sort from big to small according to its ratio, form for jamming equipment antenna gain G
tThe effectiveness of rectifying and improving-expend and compare curve U
3(C), i.e. the 3rd effectiveness-expend and compare curve U
3(C).
Δ A in the present invention
SpaceCharacteristic (isolation), for improving this class feature, generally can adopt change dual-mode antenna installation position, increase the measures to rectify and reform such as shield assembly, these different measures to rectify and reform effects are not quite similar, thus according to corresponding measure in computer simulation software FEKO to the Practical Project capable of regulating measure carry out emulation checking and draw the effectiveness of adjustment-expend ratio.With the effectiveness of these measures to rectify and reform-expend curve to sort from big to small according to its ratio, form for jamming equipment antenna gain G
tThe effectiveness of rectifying and improving-expend and compare curve U
4(C), namely quadruple effect with-expend and compare curve U
4(C).
In the present invention-Δ G
rCharacteristic (isolation), for improving this class feature, generally can adopt and change antenna type or adopt antenna array, improve antenna radiation pattern, reinforcing band suppresses to subtract the measures to rectify and reform such as effect, these different measures to rectify and reform effects are not quite similar, thus according to corresponding measure in computer simulation software FEKO to the Practical Project capable of regulating measure carry out emulation checking and draw the effectiveness of adjustment-expend ratio.With the effectiveness of these measures to rectify and reform-expend curve to sort from big to small according to its ratio, form for disturbed device antenna gain G
rThe effectiveness of rectifying and improving-expend and compare curve U
5(C), i.e. the 5th effectiveness-expend and compare curve U
5(C).
Δ A in the present invention
RlCharacteristic (susceptibility), for improving this class feature, generally can adopt the replacing transmission cable, the outer attenuating of reinforcing band, the measures to rectify and reform such as wire cable layout on the optimization machine, thus these different measures to rectify and reform effects be not quite similar according to corresponding measure in computer simulation software ADS to the Practical Project capable of regulating measure carry out the emulation checking and draw the effectiveness of adjustment-expend ratio.With the effectiveness of these measures to rectify and reform-expend curve to sort from big to small according to its ratio, form for disturbed transmission line cable waste A
RlThe effectiveness of rectifying and improving-expend and compare curve U
6(C), i.e. the 6th effectiveness-expend and compare curve U
6(C).
Δ NT characteristic (susceptibility) in the present invention, for improving this class feature, generally can adopt the noise figure that reduces low noise amplifier, improve the Out-of-band rejection ratio of receiver system, strengthen the measures to rectify and reform such as cabinet shield effectiveness, these different measures to rectify and reform effects are not quite similar, thus according to corresponding measure in computer simulation software ADS to the Practical Project capable of regulating measure carry out emulation checking and draw the effectiveness of adjustment-expend ratio.With the effectiveness of these measures to rectify and reform-expend curve to sort from big to small according to its ratio, form the effectiveness rectified and improved for jamming equipment transmission line cable waste NT-expend and compare curve U
7(C), i.e. the 7th effectiveness-expend and compare curve U
7(C).
By this step, can obtain with a kind of plain mode of emulation incorporation engineering reality can rectifying and improving the effectiveness of key element-expend than curve, as shown in Figure 1 for each.
The 3rd step: the marginal cost curves of extracting each capable of regulating key element
For any effectiveness in the step 2-expend and compare curve U
n(C) ask for first order derivative, can obtain deminishing marginal utility curved line relation formula:
In open (5), n=1,2,3,4,5,6,7, Δ U
nRepresent the variation of n rectification key element effectiveness, Δ C represents to expend variation, dU
nRepresent the differential variation of n rectification key element effectiveness, dC represents to expend the differential variation.
This first order derivative is exactly related marginal cost curves of when rectification, namely unit expend lower, the value of resulting rectification effectiveness.Owing to the effectiveness of each capable of regulating key element in the second step-expend curve is all arranged from big to small according to effectiveness-expend ratio by concrete capable of regulating operation and is got, as shown in Figure 2, this meets the model of deminishing marginal utility, namely whenever how units expend the improvement effectiveness that plays all is to successively decrease, and this meets the engineering actual conditions.
By to effectiveness-expend a differentiate than curve, just can extract the marginal cost curves of each capable of regulating key element.The realization simple to operate, easy of this mode.
The 4th step: the marginal utility theories such as foundation draw the optimal allocation index
In microeconomics, maximize the utility theory of setting up according to deminishing marginal utility principle and total utility, be responsible for the rational decision making person that the top layer index is distributed, be regarded as under a series of constraint conditions, asking most the individuality of maximization of utility, and be rationality.These decision maker wish to exchange maximization of utility for the cost of minimum reasoningly, and this maximized effectiveness can satisfy the overall rectification index of system.If reached this purpose, just realized the optimal parameter distribution method.
In order to realize that optimal parameter distributes, need at any time every many expending of a unit all to be spent on the key element rectified and improved of maximum marginal utility, expending for any marginal utility of rectifying and improving key element of last unit all equated, the marginal principle such as Here it is.
Seven capable of regulating key elements are arranged in the interfering link.U
1(C), U
2(C), U
3(C), U
4(C) ... U
7(C) be respectively the effectiveness of these seven capable of regulating key elements-expend function.Their marginal utility value can be asked first order derivative and got by total adjustment utility value so, adjusts the band of jamming equipment and launches P outward
tThe marginal utility value can be obtained by following formula:
Required expending when wherein C is for adjustment.
In like manner can get all the other six capable of regulating key element marginal utility values:
Then the marginal principle such as foundation obtains following formula:
MU
1＝MU
2＝MU
3＝MU
4＝MU
5＝MU
6＝MU
7 (7)
And assurance U
1, U
2, U
3, U
4U
7The value of this moment satisfies equation:
T＝U
1+U
2+U
3+U
4+U
5+U
6+U
7 (8)
Wherein T is the overall objective that will revise in the system; This moment U
1Value is system assignment and launches P outward to the jamming equipment band
tOptimal parameter T
1, U
2Value is system assignment to jamming equipment cable waste A
TlOptimal parameter T
2, U
3Value is system assignment to jamming equipment antenna gain G
tOptimal parameter T
3, U
4Value is system assignment to spatial attenuation A
SpaceOptimal parameter T
4, U
5Value is system assignment to disturbed device antenna gain G
rOptimal parameter T
5, U
6This moment, value was system assignment to disturbed equipment cable waste A
RlOptimal parameter T
6, U
7Value is system assignment to the optimal parameter T of the interference threshold NT of disturbed equipment
7
Formula (8) expression is assigned to different the rectification in the key elements when electromagnetic compatibility index distributor need to rectify and improve overall system index.Formula (7) expression is used these seven and can be rectified and improved when going in the key element when electromagnetic compatibility index distributor expends last, can both produce same marginal utility.Distribute so realize optimal parameter, by satisfying simultaneously formula (7) and formula (8), can easily overall electromagnetic compatibility index is assigned to respectively can rectify and improve in the key element in optimized mode and go.Allow and be assigned to any one and can rectify and improve the marginal utility that expending of key element obtain and all equate, as shown in Figure 3, the improvement of their corresponding rectification effectiveness is exactly the optimal parameter distribution that top layer index distributor formulates, as shown in Figure 4, namely among the figure area sum with the oblique line layout be overall system indicator of distribution T.
Electromagnetic compatibility index optimization distribution method based on digital model of the present invention is to carry out rectifying and improving for the frequency that electromagnetic compatibility problem occurs, needs totally to rectify and improve in the capable of regulating key element that index is assigned to whole interference and coupling path to go.Adopt the means of quantizing distribution standard, so that electromagnetic compatibility rectification index obtains optimization in implementation process.
Claims (2)
1. electromagnetic compatibility index optimization distribution method based on digital model, it is characterized in that: this distribution method is for related effectiveness during the rectification of each key element in the electromagnetic compatibility three elements-expend the digital model than relation, extracts that wherein each can rectify and improve the marginal utility of key element; Then according to the principle of rectification effect deminishing marginal utility in the actual conditions, each minute the index sum meet in the situation that overall objective requires, when the marginal utility of each key element equates, the optimization effect that touches the mark and distribute; The index optimization distribution includes following four treatment steps:
First step: the frequency of Analysis interference frequency also obtains system by Computer Simulation and always rectifies and improves index T=P
i-NT;
In first step, if having under the working environment of making an uproar, the band of jamming equipment is launched P outward
tWhen falling within the disturbed equipment working band scope, will produce potential interference to disturbed equipment, the link noise interference relationships that application can get the energy dB formal representation of noise is P
i=P
t-A
Tl+ G
t-A
Space+ G
r-A
RlAs the link noise P of equivalence to disturbed equipment input port
iWhen surpassing the interference threshold NT of disturbed equipment, disturbed equipment will be interfered, and P
i-be exactly always system that NT will rectify and improve rectifies and improves index T=P
i-NT; Utilize the link noise interference relationships P of dB formal representation
i=P
t-A
Tl+ G
t-A
Space+ G
r-A
RlThe equivalent noise that can access disturbed equipment input port is disturbed P
i, the system that further obtains needing to adjust always rectifies and improves index T=P
i-NT=P
t-A
Tl+ G
t-A
Space+ G
r-A
Rl-NT;
P
tThe outer emission of expression band, A
TlThe outer emission of expression band is through the loss of jamming equipment cable, G
tExpression jamming equipment antenna gain, A
SpaceThe representation space decay, G
rRepresent disturbed device antenna gain, A
RlRepresent disturbed equipment cable waste;
Second step: each capable of regulating key element is optimized emulation, and incorporation engineering is actual, and match obtains effectiveness-expend and compare curve U
n(C);
Described capable of regulating key element refers to be with outer emission P
t, jamming equipment cable waste A
Tl, jamming equipment antenna gain G
t, spatial attenuation A
Space, disturbed device antenna gain G
r, disturbed equipment cable waste A
RlWith disturbed equipment interference threshold NT;
Described effectiveness-expend and compare curve U
n(C) include the first effectiveness-expend and compare curve U
1(C), the second effectiveness-expend and compare curve U
2(C), the 3rd effectiveness-expend and compare curve U
3(C), quadruple effect with-expend and compare curve U
4(C), the 5th effectiveness-expend and compare curve U
5(C), the 6th effectiveness-expend and compare curve U
6(C) and the 7th effectiveness-expend and compare curve U
7(C);
The band of jamming equipment is launched indicator of distribution-Δ P outward
tAccording to the effectiveness of capable of regulating measure in the Practical Project-expend ratio to sort from big to small, form the first effectiveness-expend and compare curve U
1(C); The capable of regulating measure refers to adopt the outer filtering of band in the described Practical Project, strengthens the cabinet shield effectiveness, the measures to rectify and reform of good earth;
Loss allocation index Δ A with the transmission line cable of jamming equipment
TlAccording to the effectiveness of capable of regulating measure in the Practical Project-expend ratio to sort from big to small, form the second effectiveness-expend and compare curve U
2(C); The capable of regulating measure refers to adopt the replacing transmission cable in the described Practical Project, the outer attenuating of reinforcing band, the measures to rectify and reform of wire cable layout on the optimization machine;
With the antenna gain indicator of distribution of jamming equipment-Δ G
tAccording to the effectiveness of capable of regulating measure in the Practical Project-expend ratio to sort from big to small, form the 3rd effectiveness-expend and compare curve U
3(C); The capable of regulating measure refers to adopt and changes antenna type or adopt antenna array in the described Practical Project, improves antenna radiation pattern, and reinforcing band suppresses to subtract the measures to rectify and reform of effect;
Spatial attenuation indicator of distribution Δ A with interference channel
SpaceAccording to the effectiveness of capable of regulating measure in the Practical Project-expend ratio to sort from big to small, form quadruple effect with-expend and compare curve U
4(C); The capable of regulating measure refers to adopt change dual-mode antenna installation position in the described Practical Project, increases the measures to rectify and reform of shield assembly;
With disturbed device antenna gain indicator of distribution-Δ G
rAccording to the effectiveness of capable of regulating measure in the Practical Project-expend ratio to sort from big to small, form the 5th effectiveness-expend and compare curve U
5(C); The capable of regulating measure refers to adopt and changes antenna type or adopt antenna array in the described Practical Project, improves antenna radiation pattern, and reinforcing band suppresses to subtract the measures to rectify and reform of effect;
Loss allocation index Δ A with the transmission line cable of disturbed equipment
RlAccording to the effectiveness of capable of regulating measure in the Practical Project-expend ratio to sort from big to small, form the 6th effectiveness-expend and compare curve U
6(C); The capable of regulating measure refers to adopt the replacing transmission cable in the described Practical Project, the outer attenuating of reinforcing band, the measures to rectify and reform of wire cable layout on the optimization machine;
The interference threshold indicator of distribution Δ NT of disturbed equipment according to the effectiveness of capable of regulating measure in the Practical Project-expend ratio to sort from big to small, is formed the 7th effectiveness-expend and compare curve U
7(C); The capable of regulating measure refers to adopt the noise figure that reduces low noise amplifier in the described Practical Project, improves the Out-of-band rejection ratio of receiver system, strengthens the measures to rectify and reform of cabinet shield effectiveness;
Third step: the marginal cost curves of extracting each capable of regulating key element;
In third step for any effectiveness in the second step-expend and compare curve U
n(C) ask for first order derivative, obtain the deminishing marginal utility curve
N=1,2,3,4,5,6,7, Δ U
nRepresent the variation of n rectification key element effectiveness, Δ C represents to expend variation, dU
nRepresent the differential variation of n rectification key element effectiveness, dC represents to expend the differential variation;
The 4th step: the marginal utility theories such as foundation draw the optimal allocation index;
U in the 4th step on the interfering link
1(C), U
2(C), U
3(C), U
4(C), U
5(C), U
6(C) and U
7(C) be respectively the effectiveness of described capable of regulating key element-expend function, according to the deminishing marginal utility curve
Obtain respectively the U on the interfering link
1(C), U
2(C), U
3(C), U
4(C), U
5(C), U
6(C) and U
7(C) marginal utility value;
Adjust the band of jamming equipment and launch P outward
tThe marginal utility value be
Required expending when C is adjustment;
Adjust the transmission line cable waste A of jamming equipment
TlThe marginal utility value be
Adjust the antenna gain G of jamming equipment
tThe marginal utility value be
Adjust the spatial attenuation A of jamming equipment
SpaceThe marginal utility value be
Adjust the antenna gain G of disturbed equipment
rThe marginal utility value be
Adjust the transmission line cable waste A of disturbed equipment
RlThe marginal utility value be
The marginal utility value of adjusting the interference threshold NT of disturbed equipment is
Then the marginal principle such as foundation obtains MU
1=MU
2=MU
3=MU
4=...=MU
7, and U
1, U
2, U
3, U
4U
7The value of this moment satisfies T=U
1+ U
2+ U
3+ U
4+ ... + U
7
2. a kind of electromagnetic compatibility index optimization distribution method based on digital model according to claim 1 is characterized in that: by the link noise interference relationships P of dB formal representation
i=P
t-A
Tl+ G
t-A
Space+ G
r-A
RlAs can be known, when reducing to be with outer emission P
t, jamming equipment antenna gain G
tWith disturbed device antenna gain G
rThe time, increase jamming equipment transmission line cable waste A
Tl, spatial attenuation A
Space, disturbed device transmission line cable waste A
RlWith disturbed equipment interference threshold NT, all can be of value to the Electro Magnetic Compatibility of improvement system, divide timing just the airborne communication plateform system always need to be rectified and improved index T in index and be assigned in the described capable of regulating key element and go; Then system always rectifies and improves the index relations of distribution and is
T＝(-ΔP
t)+ΔA
tl+(-ΔG
t)+ΔA
space+(-ΔG
r)+ΔA
rl+ΔNT
＝-(ΔP
t+ΔG
t+ΔG
r)+ΔA
tl+ΔA
space+ΔA
rl+ΔNT ；
Make T
1=(Δ P
t), T
2=Δ A
Tl, T
3=(Δ G
t), T
4=Δ A
Space, T
5=(Δ G
r), T
6=Δ A
Rl, T
7=Δ NT, then system always rectifies and improves the index relations of distribution and is reduced to T=T
1+ T
2+ T
3+ T
4+ T
5+ T
6+ T
7
-Δ P
tThe band of expression jamming equipment is launched indicator of distribution outward, Δ A
TlThe Loss allocation index of the transmission line cable of expression jamming equipment ,-Δ G
tThe antenna gain indicator of distribution of expression jamming equipment, Δ A
SpaceThe spatial attenuation indicator of distribution of expression interference channel ,-Δ G
rRepresent disturbed device antenna gain indicator of distribution, Δ A
RlShow in the Loss allocation index of the transmission line cable of disturbed equipment, Δ NT shows the interference threshold indicator of distribution in disturbed equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102742883A CN101957890B (en) | 2010-09-07 | 2010-09-07 | Digital model-based method for optimizing and allocating electromagnetic compatibility indexes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102742883A CN101957890B (en) | 2010-09-07 | 2010-09-07 | Digital model-based method for optimizing and allocating electromagnetic compatibility indexes |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101957890A CN101957890A (en) | 2011-01-26 |
| CN101957890B true CN101957890B (en) | 2013-03-27 |
Family
ID=43485216
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102742883A Active CN101957890B (en) | 2010-09-07 | 2010-09-07 | Digital model-based method for optimizing and allocating electromagnetic compatibility indexes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101957890B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102692572B (en) * | 2012-05-14 | 2014-03-12 | 北京航空航天大学 | Airplane radiofrequency device electromagnetic compatibility analysis method based on time availability |
| CN102708298B (en) * | 2012-05-17 | 2016-01-13 | 西安电子科技大学 | A kind of Vehicular communication system electromagnetic compatibility index distribution method |
| CN104734643B (en) * | 2015-01-16 | 2017-10-10 | 南京航空航天大学 | A kind of module Allocation method for realizing low-power consumption radio-frequency transmitter |
| CN105099502B (en) * | 2015-06-30 | 2017-07-11 | 中国船舶重工集团公司第七0九研究所 | Frequency hopping interference signal is to determining the electromagnetic inference analysis method of frequency receiver |
| CN108196132B (en) * | 2017-11-21 | 2020-03-17 | 中国船舶重工集团公司第七一0研究所 | Method for evaluating electromagnetic compatibility in system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101425857A (en) * | 2008-11-20 | 2009-05-06 | 北京航空航天大学 | Diagnosis method for non-linear interference outside communication band of transmission device |
| CN101436221A (en) * | 2008-12-02 | 2009-05-20 | 北京航空航天大学 | Airplane complete machine electromagnetic compatible digitalization model system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090319236A1 (en) * | 2006-05-18 | 2009-12-24 | Nathan Blaunshtein | Method for analyzing wireless network located at a terrestrial environments |
-
2010
- 2010-09-07 CN CN2010102742883A patent/CN101957890B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101425857A (en) * | 2008-11-20 | 2009-05-06 | 北京航空航天大学 | Diagnosis method for non-linear interference outside communication band of transmission device |
| CN101436221A (en) * | 2008-12-02 | 2009-05-20 | 北京航空航天大学 | Airplane complete machine electromagnetic compatible digitalization model system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101957890A (en) | 2011-01-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101957890B (en) | Digital model-based method for optimizing and allocating electromagnetic compatibility indexes | |
| CN101436221B (en) | Airplane complete machine electromagnetic compatible digitalization model system | |
| CN102147429B (en) | Broadband microwave power meter and interference signal filtering method | |
| CN202121589U (en) | Wireless isolated test system | |
| CN102324959B (en) | Frequency spectrum sensing method based on multi-aerial system covariance matrix | |
| CN106872831B (en) | Interference source determines method in highly sensitive antenna of receiving device band in microwave load satellite | |
| CN102073060B (en) | Simulation method for random properties of nuclear signals | |
| CN102647239A (en) | Test system for information acquisition wireless downlink channel network | |
| CN102692572B (en) | Airplane radiofrequency device electromagnetic compatibility analysis method based on time availability | |
| CN106845836A (en) | Electricity transmitting and converting construction process environmental practice security risk analysis method and system | |
| CN103795481A (en) | Cooperative spectrum sensing method based on free probability theory | |
| German et al. | Simulation and data management for cosite interference prediction | |
| CN103176088A (en) | Method for determining weak electromagnetic coupling paths between multi-frequency interference pairs | |
| CN102723576B (en) | Quantitative evaluation method for layout of airborne antennae based on work frequency and analytical hierarchy process | |
| CN103391562A (en) | Method and device for achieving network testing based on uplink interference signals | |
| CN107589430A (en) | ADS B pressing type disturbance restraining methods based on minimum dispersion method | |
| CN103076523A (en) | Method for optimizing electromagnetic compatibility balance state | |
| CN103034913B (en) | A kind of electrical appliance radiation electromagnetic compatibility optimization method based on living quarters exposure limits | |
| CN105808800A (en) | Leakage radiation simulation and prediction method for electronic equipment cabinet | |
| CN107359896B (en) | The Interference Suppression System and method of electromagnetic wave device in a kind of 3D region | |
| Dumont et al. | Use of the parabolic equation propagation model to predict TV white space availability | |
| Xu et al. | FDTD modeling of absorbing materials for EMI applications | |
| CN202524566U (en) | Information acquisition wireless downlink channel network testing system | |
| CN101373985B (en) | Method and apparatus for evaluating multi-user detection interference elimination performance | |
| CN101895306B (en) | Method and device for designing cognitive ultra-wideband orthogonal pulses |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |