CN114089065A - Electromagnetic compatibility prediction method based on transceiving electromagnetic spectrum - Google Patents

Electromagnetic compatibility prediction method based on transceiving electromagnetic spectrum Download PDF

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CN114089065A
CN114089065A CN202111362949.2A CN202111362949A CN114089065A CN 114089065 A CN114089065 A CN 114089065A CN 202111362949 A CN202111362949 A CN 202111362949A CN 114089065 A CN114089065 A CN 114089065A
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frequency
transmitter
bandwidth
receiver
data
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CN114089065B (en
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李尧尧
蔡少雄
刁晓静
曹成
陈广志
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Beihang University
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Beihang University
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/001—Measuring interference from external sources to, or emission from, the device under test, e.g. EMC, EMI, EMP or ESD testing

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Abstract

The invention discloses an electromagnetic compatibility prediction method based on a transceiving electromagnetic spectrum, which comprises the following steps: s1, for a system comprising a plurality of transmitters and a plurality of receivers, obtaining a transmitter data list [ T ] working in the current state in the system]MAnd receiver data list R]N(ii) a S2, calculating the electromagnetic spectrum of the transmitter; s3, calculating the electromagnetic spectrum of the receiver; and S4, predicting the electromagnetic compatibility of the transmitter and the receiver according to the electromagnetic spectrum of the transmitter and the receiver. The electromagnetic compatibility prediction method based on the transceiving electromagnetic spectrum can solve the problem that the electromagnetic compatibility distributed by indexes relates to the spectrum compatibility in a node discovery system, and provides favorable conditions for the evaluation and design of the electromagnetic compatibility.

Description

Electromagnetic compatibility prediction method based on transceiving electromagnetic spectrum
Technical Field
The invention relates to the field of electromagnetic waves, in particular to an electromagnetic compatibility prediction method based on a transceiving electromagnetic spectrum.
Background
In the index allocation process of the electromagnetic compatibility design stage of a large-scale electronic platform, the transmitted spectrum of a transmitter and the received spectrum of a receiver are often required to be predicted. However, at present, no good analysis and prediction means exists due to data loss in the electromagnetic compatibility design stage; the electromagnetic compatibility design index is relatively abstract, the electromagnetic compatibility characteristic and the related technical state of the equipment cannot be shown in a concrete or visual mode, and the problem of frequency spectrum compatibility in the system cannot be found conveniently in the electromagnetic compatibility design stage of index distribution.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide an electromagnetic compatibility prediction method based on a transmitting-receiving electromagnetic spectrum, which can find the problem of spectrum compatibility in a system at an index distribution stage.
The purpose of the invention is realized by the following technical scheme: an electromagnetic compatibility prediction method based on a transmitting-receiving electromagnetic spectrum comprises the following steps:
s1, for a system comprising a plurality of transmitters and a plurality of receivers, obtaining a transmitter data list [ T ] working in the current state in the system]MAnd receiver data list R]N；
S2, calculating the electromagnetic spectrum of the transmitter;
s3, calculating the electromagnetic spectrum of the receiver;
and S4, predicting the electromagnetic compatibility of the transmitter and the receiver according to the electromagnetic spectrum of the transmitter and the receiver.
The step S2 includes:
s201: for the ith transmitter, from the transmitter data list T]MTo obtain the working center frequency thereof
Figure BDA0003359979940000011
Amplitude of transmitted signal
Figure BDA0003359979940000012
A 3dB bandwidth of
Figure BDA0003359979940000013
A 20dB bandwidth of
Figure BDA0003359979940000014
40dB bandwidth of
Figure BDA0003359979940000015
A 60dB bandwidth of
Figure BDA0003359979940000016
S202, when each value of i is 1,2, …, M, respectively calculating the frequency range of 60dB bandwidth of the ith transmitter as
Figure BDA0003359979940000017
Wherein M is the number of transmitters;
and when i is 1,2, …, M
Figure BDA0003359979940000018
Is recorded as
Figure BDA0003359979940000019
When i is equal to 1,2, …, M
Figure BDA00033599799400000110
Is recorded as
Figure BDA00033599799400000111
Will be provided with
Figure BDA00033599799400000112
Frequency list F for adding to emission spectrumTPerforming the following steps;
s203: data according to ith transmitter
Figure BDA00033599799400000113
Respectively will be respectively provided with
Figure BDA00033599799400000114
Figure BDA00033599799400000115
Figure BDA00033599799400000116
Figure BDA00033599799400000125
Figure BDA00033599799400000117
Figure BDA00033599799400000118
Figure BDA00033599799400000119
Figure BDA00033599799400000120
Figure BDA00033599799400000121
Figure BDA00033599799400000122
Figure BDA00033599799400000123
And
Figure BDA00033599799400000124
frequency list F for adding to the emission spectrumTPerforming the following steps;
s204: when i is 1,2, …, M, step S203 is repeatedly executed; after the execution is finished, a frequency list F of the emission spectrum is finally obtainedTThe data in (1) are sorted from low to high to form F'T；
S205: go through F'TTo obtain the kth frequency value
Figure BDA0003359979940000021
S206: traversing all transmitters in the system, calculating based on the transmitter data
Figure BDA0003359979940000022
Corresponding amplitude
Figure BDA0003359979940000023
S207: when K is 1,2, …, K1, steps S205-S206 are executed in a loop, until all values of K are traversed, collecting values of each frequency value
Figure BDA0003359979940000024
Forming the electromagnetic spectrum V of the transmitterTWherein K1 is F'TThe number of frequency values in (1).
The step S3 includes:
s301: for the jth receiver, from the receiver data list R]NTo obtain the working center frequency thereof
Figure BDA0003359979940000025
Sensitivity of reception
Figure BDA0003359979940000026
A 3dB selective bandwidth of
Figure BDA0003359979940000027
A 20dB selectivity bandwidth of
Figure BDA0003359979940000028
40dB selective bandwidth of
Figure BDA0003359979940000029
60dB selective bandwidth of
Figure BDA00033599799400000210
S302, when j is equal to each value of 1,2, …, N, respectively calculating the frequency range of 60dB bandwidth of the j receiver as
Figure BDA00033599799400000211
Wherein N is the number of receivers;
when j is 1,2, …, N
Figure BDA00033599799400000212
Is recorded as
Figure BDA00033599799400000213
When j is 1,2, …, N
Figure BDA00033599799400000214
Is recorded as the maximum value of
Figure BDA00033599799400000215
S303. will
Figure BDA00033599799400000216
Frequency list F for adding to the received spectrumRThe preparation method comprises the following steps of (1) performing;
s304, according to the j transmitter data
Figure BDA00033599799400000217
Respectively to be provided with
Figure BDA00033599799400000218
Figure BDA00033599799400000219
Figure BDA00033599799400000220
And
Figure BDA00033599799400000221
frequency list F added to the received spectrumRPerforming the following steps;
s305, when j is 1,2, …, N, repeatedly executing step S304; frequency list F of received spectrum obtained after executionRThe data in (1) are sorted from low to high to form F'R；
S306, traversing F'RTo obtain the kth frequency value
Figure BDA00033599799400000222
S307, traversing all receivers in the system, and calculating according to data of the receivers
Figure BDA00033599799400000223
Corresponding amplitude
Figure BDA00033599799400000224
S308, when K is 1,2, … and K2, executing steps S306 to S307 in a circulating way until all values of K are traversed, and collecting values on each frequency
Figure BDA00033599799400000225
Forming the electromagnetic spectrum V of a receiverRWherein K2 represents F'RNumber of frequency values in (1).
The step S4 includes:
whether a shared frequency band exists in the electromagnetic spectrum of the transmitter and the electromagnetic spectrum of the receiver in a specified bandwidth (for example, a specified 20dB bandwidth) is judged, if the shared frequency band exists, the situation that the working frequency bands of the transmitter and the receiver conflict with each other in the specified bandwidth exists, namely, the problem of electromagnetic compatibility exists, and if the shared frequency band does not exist, the problem of electromagnetic compatibility does not exist in the specified bandwidth of the transmitter and the receiver.
Preferably, when there is an electromagnetic compatibility problem, the transmitter may cause electromagnetic interference to the receiver, and therefore, it is necessary to reduce the coupling between the devices by means of shielding, receiving, filtering, and the like at a later stage, so that the devices can operate compatibly. Or directly reconsider new transmit or receive bands at the design stage for compatible operation.
The invention has the beneficial effects that: the invention can find the problem of the frequency spectrum compatibility in the system at the electromagnetic compatibility design stage of index distribution, and provides favorable conditions for the evaluation of the electromagnetic compatibility.
Drawings
FIG. 1 is a flow chart of a method of the present invention;
FIG. 2 is a schematic diagram of a transmitter transmission spectrum;
FIG. 3 is a schematic diagram of a frequency selective spectrum in a receiver;
FIG. 4 is a schematic diagram of an emission spectrum in the system;
FIG. 5 is a schematic diagram of an in-system receive spectrum;
fig. 6 is a schematic diagram of the system adduction/adduction mixing spectrum.
Detailed Description
The technical solutions of the present invention are further described in detail below with reference to the accompanying drawings, but the scope of the present invention is not limited to the following.
As shown in fig. 1, an electromagnetic compatibility prediction method based on a transceiving electromagnetic spectrum is characterized in that: the method comprises the following steps:
s1, for a system comprising a plurality of transmitters and a plurality of receivers, obtaining a transmitter data list [ T ] operating in the current state in the system]MAnd receiver data list R]N；
S2, calculating the electromagnetic spectrum of the transmitter;
s3, calculating the electromagnetic spectrum of the receiver;
and S4, predicting the electromagnetic compatibility of the transmitter and the receiver according to the electromagnetic spectrum of the transmitter and the receiver.
In an embodiment of the application, the transmitter data list [ T [ ]]MIncluding data from each transmitter; the data for each transmitter includes:
the working center frequency is in MHz;
the amplitude of the transmitted signal, in dBm;
3dB bandwidth in MHz;
20dB bandwidth in MHz;
40dB bandwidth in MHz;
60dB bandwidth in MHz.
The schematic diagram of the transmission spectrum of the transmitter is shown in FIG. 2;
in an embodiment of the application, the receiver data list R]NThe method comprises the following steps of containing data of each receiver, wherein the data of each receiver comprises the following steps:
the working center frequency is in MHz;
receive sensitivity in dBm;
3dB selective bandwidth in MHz;
20dB selective bandwidth in MHz;
40dB selective bandwidth in MHz;
60dB selectivity bandwidth in MHz.
A schematic diagram of the frequency selective spectrum in the receiver is shown in fig. 3.
The step S2 includes:
s201: for the ith transmitter, from the transmitter data list T]MTo obtain the working center frequency thereof
Figure BDA0003359979940000041
Amplitude of transmitted signal
Figure BDA0003359979940000042
A 3dB bandwidth of
Figure BDA0003359979940000043
A 20dB bandwidth of
Figure BDA0003359979940000044
A 40dB bandwidth of
Figure BDA0003359979940000045
A 60dB bandwidth of
Figure BDA0003359979940000046
S202, when each value of i is 1,2, …, M, respectively calculating the frequency range of 60dB bandwidth of the ith transmitter as
Figure BDA0003359979940000047
Wherein M is the number of transmitters;
and when i is 1,2, …, M
Figure BDA0003359979940000048
Is recorded as the minimum value of
Figure BDA0003359979940000049
When i is 1,2, …, M
Figure BDA00033599799400000410
Is recorded as
Figure BDA00033599799400000411
Will be provided with
Figure BDA00033599799400000412
Frequency list F for adding to emission spectrumTPerforming the following steps;
s203: data according to ith transmitter
Figure BDA00033599799400000413
Respectively to be provided with
Figure BDA00033599799400000414
Figure BDA00033599799400000415
Figure BDA00033599799400000416
And
Figure BDA00033599799400000417
frequency list F added to the emission spectrumTPerforming the following steps;
s204: when i is 1,2, …, M, step S203 is repeatedly executed; after the execution is finished, a frequency list F of the emission spectrum is finally obtainedTThe data in (1) are sorted from low to high to form F'T；
S205: go through F'TTo obtain the kth frequency value
Figure BDA00033599799400000418
S206: traversing all transmitters in the system, calculating based on the transmitter data
Figure BDA00033599799400000419
Corresponding amplitude
Figure BDA00033599799400000420
S207: when K is 1,2, … and K1, steps S205 to S206 are executed in a loop until all values of K are traversed, and the values of each frequency value are collected
Figure BDA0003359979940000051
Forming the electromagnetic spectrum V of the transmitterTWherein K1 is F'TNumber of frequency values in (1).
Wherein the step S204 includes:
a1: initialization will be
Figure BDA0003359979940000052
Assigning a preset lowest emission amplitude; i is initialized to 1;
a2: obtaining ith transmitter data
Figure BDA0003359979940000053
And
Figure BDA0003359979940000054
go to step A3;
a3: if it is used
Figure BDA0003359979940000055
Or
Figure BDA0003359979940000056
Then will be
Figure BDA0003359979940000057
Is endowed with
Figure BDA0003359979940000058
Go to step A9; otherwise, turning to A4;
a4: if it is used
Figure BDA0003359979940000059
Or
Figure BDA00033599799400000510
Then will be
Figure BDA00033599799400000511
Is endowed with
Figure BDA00033599799400000512
Turning to step A9; otherwise, turning to A5;
a5: if it is used
Figure BDA00033599799400000513
Or
Figure BDA00033599799400000514
Then will be
Figure BDA00033599799400000515
Is endowed with
Figure BDA00033599799400000516
Go to step A9; otherwise, switching to A6;
a6: if it is not
Figure BDA00033599799400000517
Or
Figure BDA00033599799400000518
Then will be
Figure BDA00033599799400000519
Is endowed with
Figure BDA00033599799400000520
Go to step A9; otherwise, turning to A7;
a7: if it is not
Figure BDA00033599799400000521
Then will be
Figure BDA00033599799400000522
Is endowed with
Figure BDA00033599799400000523
Go to step A9; otherwise, turning to A8;
a8: judgment of
Figure BDA00033599799400000524
Whether or not to fall into
Figure BDA00033599799400000525
Figure BDA00033599799400000526
If the eight frequency intervals consisting of nine frequencies are positive, the frequency intervals satisfying the conditions are [ freq1, freq2 ]]The amplitudes corresponding to the nine frequencies are respectively
Figure BDA00033599799400000527
Recording the amplitude corresponding to the frequency freq1 as val1 and the amplitude corresponding to the frequency freq2 as val2, there are
Figure BDA00033599799400000528
Corresponding amplitude is
Figure BDA00033599799400000529
Figure BDA00033599799400000530
Go to step A9; if not, directly switching to the step A9;
for example, if the frequency interval satisfying the condition is the 4 th interval, there are
Figure BDA00033599799400000531
Figure BDA00033599799400000532
Figure BDA00033599799400000533
Figure BDA00033599799400000534
A9: judging whether i +1 is larger than M;
if yes, the transmitter finishes traversing and returns to the current state
Figure BDA00033599799400000535
Namely that
Figure BDA00033599799400000536
A corresponding magnitude;
if not, assigning i +1 to i, and circularly executing the step A2 to the step A9.
The step S3 includes:
s301: for the jth receiver, from the receiver data list R]NTo obtain the working center frequency thereof
Figure BDA0003359979940000061
Sensitivity of reception
Figure BDA0003359979940000062
3dB selectivity bandwidth of
Figure BDA0003359979940000063
A 20dB selective bandwidth of
Figure BDA0003359979940000064
A 40dB selective bandwidth of
Figure BDA0003359979940000065
60dB selective bandwidth of
Figure BDA0003359979940000066
S302, when j is equal to each of 1,2, …, N, the frequency range of 60dB bandwidth of j-th receiver is calculated as
Figure BDA0003359979940000067
Wherein N is the number of receivers;
when j is 1,2, …, N
Figure BDA0003359979940000068
Minimum value of (2)Is marked as
Figure BDA0003359979940000069
When j is 1,2, …, N
Figure BDA00033599799400000610
Is recorded as
Figure BDA00033599799400000611
S303. will
Figure BDA00033599799400000612
Frequency list F for adding to the received spectrumRPerforming the following steps;
s304, according to the j transmitter data
Figure BDA00033599799400000613
Respectively to be provided with
Figure BDA00033599799400000614
Figure BDA00033599799400000615
Figure BDA00033599799400000616
And
Figure BDA00033599799400000617
frequency list F added to the received spectrumRPerforming the following steps;
s305, when j is 1,2, …, N, repeatedly executing step S304; frequency list F of received spectrum obtained after executionRThe data in (1) are sorted from low to high to form F'R；
S306, traversing F'RTo obtain the kth frequency value
Figure BDA00033599799400000618
S307, traversing all the nodes in the systemReceiver, calculating from the data of the receiver
Figure BDA00033599799400000619
Corresponding amplitude
Figure BDA00033599799400000620
S308, when K is equal to 1,2, … and K2, the steps S306 to S307 are executed in a circulating way until all values of K are traversed, and the values on each frequency are collected
Figure BDA00033599799400000621
Forming the electromagnetic spectrum V of a receiverRWherein K2 represents F'RThe number of frequency values in (1).
Wherein the step S304 includes:
b1: initialization will be
Figure BDA00033599799400000622
Assigning a preset maximum receiving amplitude; j is initialized to 1;
b2: obtaining jth receiver data
Figure BDA00033599799400000623
And
Figure BDA00033599799400000624
b3: if it is not
Figure BDA00033599799400000625
Or
Figure BDA00033599799400000626
Then will be
Figure BDA00033599799400000627
Is endowed with
Figure BDA00033599799400000628
Go to step B9; if not, directly switching to the step B4;
B4: if it is not
Figure BDA00033599799400000629
Or
Figure BDA00033599799400000630
Then will be
Figure BDA00033599799400000631
Is endowed with
Figure BDA00033599799400000632
Go to step B9; if not, directly switching to the step B5;
b5: if it is not
Figure BDA00033599799400000633
Or
Figure BDA00033599799400000634
Then will be
Figure BDA00033599799400000635
Is endowed with
Figure BDA00033599799400000636
Go to step B9; if not, directly switching to the step B6;
b6: if it is not
Figure BDA0003359979940000071
Or
Figure BDA0003359979940000072
Then will be
Figure BDA0003359979940000073
Is endowed with
Figure BDA0003359979940000074
Go to step B9; if not, directly switching to the step B7;
b7: if it is not
Figure BDA0003359979940000075
Then will be
Figure BDA0003359979940000076
Is endowed with
Figure BDA0003359979940000077
Go to step B9; if not, directly switching to the step B8;
b8: judgment of
Figure BDA0003359979940000078
Whether or not to fall into
Figure BDA0003359979940000079
Figure BDA00033599799400000710
If the eight frequency intervals consisting of nine frequencies are equal, the frequency interval meeting the conditions is [ freq1, freq2 ]]The amplitudes corresponding to the nine frequencies are respectively
Figure BDA00033599799400000711
Recording the amplitude corresponding to the frequency freq1 as val1 and the amplitude corresponding to the frequency freq2 as val2, there are
Figure BDA00033599799400000712
Corresponding amplitude is
Figure BDA00033599799400000713
Go to step B9; if not, directly switching to the step B9;
for example, if the frequency interval satisfying the condition is the 4 th interval, there are
Figure BDA00033599799400000714
Figure BDA00033599799400000715
Figure BDA00033599799400000716
Figure BDA00033599799400000717
B9: judging whether j +1 is larger than N;
if yes, the transmitter finishes traversing and returns to the current state
Figure BDA00033599799400000718
Namely, it is
Figure BDA00033599799400000719
A corresponding magnitude;
if not, j +1 is assigned to j, and the steps A2 to A9 are executed in a circulating mode.
The step S4 includes:
judging whether the electromagnetic spectrum of the transmitter and the electromagnetic spectrum of the receiver have a shared frequency band in the designated bandwidth, if so, the transmitter and the receiver have the condition that the working frequency bands conflict with each other in the designated bandwidth, namely, the problem of electromagnetic compatibility exists, and if not, the transmitter and the receiver do not have the problem of electromagnetic compatibility in the designated bandwidth. When the electromagnetic compatibility problem exists, the transmitter may cause electromagnetic interference to the receiver, so that the coupling between the devices needs to be reduced by means of shielding, receiving, filtering and the like at a later stage, so that the devices can work compatibly. Or directly reconsider the new transmit or receive band in the design stage to make the two operate compatibly.
In the embodiment of the present application, by using the application method, a schematic diagram of a plurality of transmitters, a plurality of receivers, and a transmission spectrum, a reception spectrum, and a reception/transmission mixed spectrum in a system is obtained, where the schematic diagram of the transmission spectrum in the system is shown in fig. 4, the schematic diagram of the reception spectrum in the system is shown in fig. 5, and the schematic diagram of the reception/transmission mixed spectrum in the system is shown in fig. 6; in the system interior receiving/transmitting mixed spectrum, the co-location interference frequency band of the shared frequency band existing in the transmitter and the receiver and the corresponding transmitting and receiving equipment can be visually and obviously seen.
By comparing the transmitted spectrum of the transmitter and the received spectrum of the receiver within the system to find the co-occupied frequency ranges, the scheme and design phase requires careful treatment of the transmitter and receiver operating in these frequency ranges, since these transmitters and receivers, if not well processed, are very susceptible to electromagnetic interference between them. After the jointly occupied frequency range is visually expressed in a graph form during design, the coupling channel of the transmitter and receiver pair shared by the frequency ranges needs to be designed in an important way, for example, the electromagnetic interference between the transmitter and receiver pair is reduced by adding the isolation between the transmitter and receiver pair, receiving, shielding and other means.
While the foregoing description shows and describes a preferred embodiment of the invention, it is to be understood, as noted above, that the invention is not limited to the form disclosed herein, but is not intended to be exhaustive or to exclude other embodiments and may be used in various other combinations, modifications, and environments and may be modified within the scope of the inventive concept described herein by the above teachings or the skill or knowledge of the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (8)

1. A method for predicting electromagnetic compatibility based on a transmitting-receiving electromagnetic spectrum is characterized in that: the method comprises the following steps:
s1, for a system comprising a plurality of transmitters and a plurality of receivers, obtaining a transmitter data list [ T ] working in the current state in the system]MAnd receiver data list R]N；
S2, calculating the electromagnetic spectrum of the transmitter;
s3, calculating the electromagnetic spectrum of the receiver;
and S4, predicting the electromagnetic compatibility of the transmitter and the receiver according to the electromagnetic spectrum of the transmitter and the receiver.
2. The method of claim 1, wherein the method comprises: said transmitter data list [ T ]]MIncluding data from each transmitter; the data for each transmitter includes:
the working center frequency is in MHz;
the amplitude of the transmitted signal is dBm;
3dB bandwidth in MHz;
20dB bandwidth in MHz;
40dB bandwidth in MHz;
60dB bandwidth in MHz.
3. The method according to claim 1, wherein the method for predicting electromagnetic compatibility based on the transceiving electromagnetic spectrum comprises: said receiver data list [ R ]]NThe data of each receiver is contained, and the data of each receiver comprises:
the working center frequency is in MHz;
receive sensitivity in dBm;
3dB selective bandwidth in MHz;
20dB selective bandwidth in MHz;
40dB selective bandwidth in MHz;
60dB selective bandwidth in MHz.
4. The method according to claim 1, wherein the method for predicting electromagnetic compatibility based on the transceiving electromagnetic spectrum comprises: the step S2 includes:
s201: for the ith transmitter, from the transmitter data list T]MTo obtain the working center frequency f thereofc (i)Amplitude of the transmitted signal
Figure FDA0003359979930000011
A 3dB bandwidth of
Figure FDA0003359979930000012
A 20dB bandwidth of
Figure FDA0003359979930000013
A 40dB bandwidth of
Figure FDA0003359979930000014
60dB bandwidth of
Figure FDA0003359979930000015
S202, when each of i 1,2, and M takes a value, respectively calculating a frequency range of 60dB bandwidth of the i-th transmitter as
Figure FDA0003359979930000016
Wherein M is the number of transmitters;
and when i is 1,2, say, M
Figure FDA0003359979930000017
Is recorded as
Figure FDA0003359979930000018
When i is 1,2, said, M
Figure FDA0003359979930000019
Is recorded as
Figure FDA0003359979930000021
Will be provided with
Figure FDA0003359979930000022
Frequency list F for adding to emission spectrumTThe preparation method comprises the following steps of (1) performing;
s203: data f from ith transmitterc (i)、
Figure FDA0003359979930000023
Respectively to be provided with
Figure FDA0003359979930000024
Figure FDA0003359979930000025
Figure FDA0003359979930000026
And
Figure FDA0003359979930000027
frequency list F for adding to the emission spectrumTPerforming the following steps;
s204: when i is 1, 2.. times.m, step S203 is repeatedly executed; after the execution is finished, a frequency list F of the emission spectrum is finally obtainedTThe data in (1) are sorted from low to high to form F'T；
S205: go through F'TTo obtain the kth frequency value
Figure FDA0003359979930000028
S206: traversing all transmitters in the system, calculating based on the data from the transmitters
Figure FDA0003359979930000029
Corresponding amplitude
Figure FDA00033599799300000210
S207: when K is 1, 2.., K1, steps S205 to S206 are executed in a loop until all values of K are traversed, and the values of each frequency value are collected
Figure FDA00033599799300000211
Forming the electromagnetic spectrum V of the transmitterTWherein K1 is F'TThe number of frequency values in (1).
5. The method according to claim 3, wherein the method for predicting electromagnetic compatibility based on the transceiving electromagnetic spectrum comprises: the step S204 includes:
a1: initialization will be
Figure FDA00033599799300000212
Assigned as preset minimum hairShot size; i is initialized to 1;
a2: obtaining ith transmitter data fc (i)、
Figure FDA00033599799300000213
And
Figure FDA00033599799300000214
go to step A3;
a3: if it is not
Figure FDA00033599799300000215
Or
Figure FDA00033599799300000216
Then will be
Figure FDA00033599799300000217
Is endowed with
Figure FDA00033599799300000218
Go to step A9; otherwise, turning to A4;
a4: if it is used
Figure FDA00033599799300000219
Or
Figure FDA00033599799300000220
Then will be
Figure FDA00033599799300000221
Is endowed with
Figure FDA00033599799300000222
Go to step A9; otherwise, turning to A5;
a5: if it is not
Figure FDA00033599799300000223
Or
Figure FDA00033599799300000224
Then will be
Figure FDA00033599799300000225
Is endowed with
Figure FDA00033599799300000226
Go to step A9; otherwise, switching to A6;
a6: if it is not
Figure FDA00033599799300000227
Or
Figure FDA00033599799300000228
Then will be
Figure FDA00033599799300000229
Is endowed with
Figure FDA00033599799300000230
Go to step A9; otherwise, turning to A7;
a7: if it is not
Figure FDA00033599799300000231
Then will be
Figure FDA00033599799300000232
Is endowed with
Figure FDA00033599799300000233
Go to step A9; otherwise, turning to A8;
a8: judgment of
Figure FDA00033599799300000234
Whether or not to fall into
Figure FDA00033599799300000235
Figure FDA00033599799300000236
Among eight frequency intervals consisting of nine frequencies, if so, the frequency interval satisfying the conditions is [ freq1, freq2 ]]The amplitudes corresponding to the nine frequencies are respectively
Figure FDA0003359979930000031
Recording the amplitude corresponding to the frequency freq1 as val1 and the amplitude corresponding to the frequency freq2 as val2, there are
Figure FDA0003359979930000032
Corresponding amplitude is
Figure FDA0003359979930000033
Figure FDA0003359979930000034
Go to step A9; if not, directly switching to the step A9;
a9: judging whether i +1 is larger than M;
if yes, the transmitter finishes traversing and returns to the current state
Figure FDA0003359979930000035
Namely, it is
Figure FDA0003359979930000036
The corresponding amplitude;
if not, assigning i +1 to i, and circularly executing the steps A2-A9.
6. The method of claim 1, wherein the method comprises: the step S3 includes:
s301: for the jth receiver, from the receiver data list R]NTo obtain the working center frequency f thereofc (j)Sensitivity of reception
Figure FDA0003359979930000037
A 3dB selective bandwidth of
Figure FDA0003359979930000038
A 20dB selective bandwidth of
Figure FDA0003359979930000039
A 40dB selective bandwidth of
Figure FDA00033599799300000310
60dB selective bandwidth of
Figure FDA00033599799300000311
S302, when j is 1,2, and N, respectively calculating the frequency range of 60dB bandwidth of the jth receiver as
Figure FDA00033599799300000312
Wherein N is the number of receivers;
when j is 1,2,.. times.n
Figure FDA00033599799300000313
Is recorded as
Figure FDA00033599799300000314
When j is 1,2,.. times.n
Figure FDA00033599799300000315
Is recorded as
Figure FDA00033599799300000316
S303. will
Figure FDA00033599799300000317
Frequency list F for adding to the received spectrumRPerforming the following steps;
s304. according to the j transmitter data fc (j)、
Figure FDA00033599799300000318
Respectively to be provided with
Figure FDA00033599799300000319
Figure FDA00033599799300000320
Figure FDA00033599799300000321
And
Figure FDA00033599799300000322
frequency list F added to the received spectrumRPerforming the following steps;
s305. when j is 1, 2.., N, step S304 is repeatedly executed; frequency list F of received spectrum obtained after executionRThe data in (1) are sorted from low to high to form F'R；
S306, traversing F'RTo obtain the kth frequency value
Figure FDA00033599799300000323
S307, traversing all receivers in the system, and calculating according to data of the receivers
Figure FDA00033599799300000324
Corresponding amplitude
Figure FDA00033599799300000325
S308, when K is 1,2, 9, K2, executing steps S306 to S307 in a loop manner, and collecting values on each frequency until all values of K are traversed
Figure FDA00033599799300000326
Forming the electromagnetic spectrum V of a receiverRWhereinK2 represents F'RThe number of frequency values in (1).
7. The method according to claim 1, wherein the method for predicting electromagnetic compatibility based on the transceiving electromagnetic spectrum comprises: the step S304 includes:
b1: initialization will be
Figure FDA0003359979930000041
Assigning a preset maximum receiving amplitude; j is initialized to 1;
b2: obtaining jth receiver data fc (j)、
Figure FDA0003359979930000042
And
Figure FDA0003359979930000043
b3: if it is not
Figure FDA0003359979930000044
Or
Figure FDA0003359979930000045
Then will be
Figure FDA0003359979930000046
Is endowed with
Figure FDA0003359979930000047
Go to step B9; if not, directly switching to the step B4;
b4: if it is not
Figure FDA0003359979930000048
Or
Figure FDA0003359979930000049
Then will be
Figure FDA00033599799300000410
Is endowed with
Figure FDA00033599799300000411
Go to step B9; if not, directly switching to the step B5;
b5: if it is not
Figure FDA00033599799300000412
Or
Figure FDA00033599799300000413
Then will be
Figure FDA00033599799300000414
Is endowed with
Figure FDA00033599799300000415
Go to step B9; if not, directly switching to the step B6;
b6: if it is not
Figure FDA00033599799300000416
Or
Figure FDA00033599799300000417
Then will be
Figure FDA00033599799300000418
Is endowed with
Figure FDA00033599799300000419
Go to step B9; if not, directly switching to the step B7;
b7: if it is used
Figure FDA00033599799300000420
Then will be
Figure FDA00033599799300000421
Is endowed with
Figure FDA00033599799300000422
Go to step B9; if not, directly switching to the step B8;
b8: judgment of
Figure FDA00033599799300000423
Whether or not to fall into
Figure FDA00033599799300000424
fc (j)，
Figure FDA00033599799300000425
If the eight frequency intervals consisting of nine equal frequencies are positive, the frequency interval satisfying the conditions is [ freq1, freq2 ]]The amplitudes corresponding to the nine frequencies are respectively
Figure FDA00033599799300000426
Recording the amplitude corresponding to the frequency freq1 as val1 and the amplitude corresponding to the frequency freq2 as val2, there are
Figure FDA00033599799300000427
Corresponding amplitude is
Figure FDA00033599799300000428
Go to step B9; if not, directly switching to the step B9;
b9: judging whether j +1 is larger than N;
if yes, the transmitter finishes traversing and returns to the current state
Figure FDA00033599799300000429
Namely, it is
Figure FDA00033599799300000430
A corresponding magnitude;
if not, j +1 is assigned to j, and the steps A2 to A9 are executed in a circulating mode.
8. The method according to claim 1, wherein the method for predicting electromagnetic compatibility based on the transceiving electromagnetic spectrum comprises: the step S4 includes:
and judging whether a shared frequency band exists in the electromagnetic spectrum of the transmitter and the electromagnetic spectrum of the receiver in the designated bandwidth, if so, determining that the transmitter and the receiver have the condition that the working frequency bands conflict with each other in the designated bandwidth, namely, the problem of electromagnetic compatibility exists, and if not, determining that the transmitter and the receiver have the problem of electromagnetic compatibility in the designated bandwidth.
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