CN112788627B - Method and device for evaluating comprehensive anti-interference performance of point-to-point communication system - Google Patents
Method and device for evaluating comprehensive anti-interference performance of point-to-point communication system Download PDFInfo
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Abstract
The invention relates to a method and a device for evaluating the comprehensive anti-interference performance of a point-to-point communication system, wherein the method constructs a simulated point-to-point communication system by utilizing a radio technology, and the simulated point-to-point communication system comprises first equipment and second equipment; inputting a target communication protocol into first equipment and second equipment, and connecting the first equipment and the second equipment with a terminal computer; establishing communication between first equipment and second equipment, applying various interference sources with different styles and different frequencies to the first equipment and the second equipment in a communication area, and acquiring working states of the first equipment and the second equipment through a terminal computer; the comprehensive anti-interference performance of the simulated point-to-point communication system is determined according to the working state based on the pre-constructed anti-interference performance evaluation model, the anti-interference performance of the point-to-point communication system under different types of interference sources can be accurately and quickly tested, and a certain theoretical basis is provided for formulating different anti-interference strategies.
Description
Technical Field
The invention belongs to the technical field of communication systems, and particularly relates to a comprehensive anti-interference performance evaluation method and device for a point-to-point communication system.
Background
Modern communication system development tends to be more and more comprehensive, and a point-to-point communication system realizes information sharing by taking instantaneity and accuracy as characteristics, establishes a digital and networked integrated communication platform, and forms multi-level and large-scale digital integrated all-field communication.
The point-to-point communication system is an important ring for realizing digital integrated communication, and realizes information sharing in the whole field by utilizing point-to-point communication, thereby greatly improving the system combination capability of the information system. The anti-interference performance of the point-to-point communication system is a key index for exerting the joint capability of the communication system, particularly, the environment of an integrated communication platform is complicated, and the interference pattern of the point-to-point communication system is not simple and single, but various electromagnetic interferences are mixed together.
Therefore, how to test the anti-interference performance of the peer-to-peer communication system under different interference patterns becomes a technical problem that needs to be solved urgently by those skilled in the art.
Disclosure of Invention
In order to solve at least the above problems in the prior art, the present invention provides a method and an apparatus for evaluating the comprehensive anti-interference performance of a peer-to-peer communication system, so as to achieve the anti-interference performance test of the peer-to-peer communication system under different interference patterns.
The technical scheme provided by the invention is as follows:
on one hand, the comprehensive anti-interference performance evaluation method for the point-to-point communication system comprises the following steps:
building an analog peer-to-peer communication system using radio technology, the analog peer-to-peer communication system comprising a first device and a second device;
inputting a target communication protocol to the first device and the second device, and connecting the first device and the second device with a terminal computer;
establishing communication between the first equipment and the second equipment, applying various interference sources with different styles and different frequencies to the first equipment and the second equipment in a communication area, and acquiring the working states of the first equipment and the second equipment through the terminal computer;
and determining the comprehensive anti-interference performance of the simulated point-to-point communication system according to the working state based on a pre-constructed anti-interference performance evaluation model.
Optionally, the first device and the second device each include a data computer, an interface control processor, an interface terminal, and a radio transmission module;
the data computer is used for converting the preprocessed data into formatted information according to a point-to-point communication information standard, the interface control processor is used for converting the formatted information according to a target communication protocol and an interface, the interface terminal is used for performing dynamic communication and link protocol processing on the converted formatted information, and the radio transmission module is used for performing transmission processing on the data after the dynamic communication and link protocol processing.
Optionally, the target communication protocol operating parameters include:
the frame rate of channel transmission is 9.5703125kbps, the symbol rate after convolutional coding is 19.140625kbps, 1024-bit pseudo code spreading is adopted, the spreading code rate is 9.8MHz, and 2 symbol bits occupy one pseudo code period; the interference sources include wideband jamming interference, partial band interference, and repeater spoofing interference.
Optionally, the index parameters of the wideband jamming interference include: power suppression degree, frequency suppression degree, synchronization time and error rate;
the index parameters of the partial frequency band interference comprise: power suppression degree, space suppression degree, interference separation degree and error rate;
the index parameters of the forwarding type deception jamming comprise: a time delay suppression degree, a power suppression degree and a signal error rate;
correspondingly, before determining the comprehensive anti-interference performance of the analog point-to-point communication system, the method further includes:
and constructing an anti-interference performance evaluation model according to the index parameters of the broadband blocking interference, the index parameters of the partial frequency band interference and the index parameters of the forwarding type deception interference.
Optionally, the constructing an anti-interference performance evaluation model according to the index parameter of the wideband blocking interference, the index parameter of the partial band interference, and the index parameter of the forwarding spoofing interference includes:
constructing a first-level evaluation layer according to the power suppression degree, the frequency suppression degree, the synchronization time and the error rate of the broadband blocking interference, the power suppression degree, the space suppression degree, the interference separation degree and the error rate of the partial frequency band interference, and the delay suppression degree, the power suppression degree and the error rate of the forwarding type deception interference;
constructing a second-level evaluation layer according to the broadband blocking interference, the partial frequency band interference and the forwarding type deception interference;
and determining comprehensive anti-interference performance according to the grading result of the second-level evaluation layer, constructing a third-level evaluation layer, and constructing an anti-interference performance evaluation model comprising the first-level evaluation layer, the second-level evaluation layer and the third-level evaluation layer.
Optionally, the constructing the first-level evaluation layer includes:
determining a power suppression degree, a frequency suppression degree, a synchronization time and a bit error rate of the broadband blocking interference, a power suppression degree, a space suppression degree, an interference separation degree and a bit error rate of the partial frequency band interference, and a membership degree of a delay suppression degree, a power suppression degree and a signal error rate of the forwarding type deception interference according to a gradient function;
and carrying out fuzzy mapping on the membership degree, and establishing a membership degree matrix as the first-stage evaluation layer.
Optionally, the constructing the second-level evaluation layer includes:
dividing the membership degree matrix into three sub-membership degree matrices, wherein the three sub-membership degree matrices are respectively a broadband blocking interference resisting matrix, a partial frequency band interference resisting matrix and a forwarding deception interference resisting matrix;
respectively determining evaluation vectors of the broadband blocking interference resisting matrix, the partial frequency band interference resisting matrix and the forwarding spoofing interference resisting matrix;
and constructing a second-level evaluation layer according to the evaluation vector.
Optionally, the determining the evaluation vectors of the anti-wideband blocking interference matrix, the anti-partial-band interference matrix, and the anti-forwarding spoofing interference matrix respectively includes:
and solving the evaluation vector of the anti-broadband blocking interference matrix, the evaluation vector of the anti-partial frequency band interference matrix and the evaluation vector of the anti-forwarding spoofing interference matrix by adopting a characteristic root method.
Optionally, the constructing a third-level evaluation layer includes:
calculating a comprehensive evaluation vector based on a preset rule, and constructing a third-level evaluation layer;
correspondingly, the determining the comprehensive anti-interference performance of the analog point-to-point communication system includes:
determining an interval range of the comprehensive evaluation vector;
and determining the comprehensive anti-interference performance of the analog point-to-point communication system according to the interval range and the preset grade interval range.
In another aspect, an apparatus for evaluating the comprehensive anti-interference performance of a peer-to-peer communication system includes:
an analog system construction module for constructing an analog peer-to-peer communication system using radio technology, the analog peer-to-peer communication system comprising a first device and a second device;
the simulation system communication module is used for inputting a target communication protocol to the first equipment and the second equipment and connecting the first equipment and the second equipment with a terminal computer;
the system interference simulation module is used for establishing communication between the first equipment and the second equipment, applying various interference sources with different styles and different frequencies to the first equipment and the second equipment in a communication area, and acquiring the working states of the first equipment and the second equipment through the terminal computer;
and the system performance evaluation module is used for determining the comprehensive anti-interference performance of the simulated point-to-point communication system according to the working state based on a pre-constructed anti-interference performance evaluation model.
The invention has the beneficial effects that:
the invention provides a comprehensive anti-interference performance evaluation method and a comprehensive anti-interference performance evaluation device for a point-to-point communication system, wherein the method is characterized in that a simulated point-to-point communication system is constructed by utilizing a radio technology, and comprises first equipment and second equipment; inputting a target communication protocol into first equipment and second equipment, and connecting the first equipment and the second equipment with a terminal computer; applying various interference sources with different styles and different frequencies to the first equipment and the second equipment, and acquiring the working states of the first equipment and the second equipment through a terminal computer; the comprehensive anti-interference performance of the simulated point-to-point communication system is determined according to the working state based on the pre-constructed anti-interference performance evaluation model, so that the anti-interference performance of the point-to-point communication system under different types of interference sources can be accurately and quickly tested by simulating the point-to-point communication system and applying different types of interference, and a certain theoretical basis is provided for formulating different anti-interference strategies.
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In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a flowchart of a method for evaluating comprehensive anti-interference performance of a peer-to-peer communication system according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of the interference rejection performance evaluation model in fig. 1.
Fig. 3 is a schematic structural diagram of an integrated interference resistance evaluation apparatus for a peer-to-peer communication system according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
Fig. 1 is a flowchart of a method for evaluating comprehensive anti-interference performance of a peer-to-peer communication system according to an embodiment of the present invention, and fig. 2 is a schematic structural diagram of an anti-interference performance evaluation model in fig. 1.
As shown in fig. 1, the method for evaluating the comprehensive anti-interference performance of the peer-to-peer communication system provided in this embodiment includes the following steps:
s11, constructing an analog peer-to-peer communication system using radio technology, the analog peer-to-peer communication system including a first device and a second device.
Specifically, the first device and the second device are the same device, and have the same structure and function, and both the first device and the second device include a data computer, an interface control processor, an interface terminal and a radio transmission module, and the components of the peer-to-peer communication system generally include a transmission channel, a communication protocol and standard formatted information, and the basic components include a data system, an interface control processor, a peer-to-peer terminal device, a radio transceiver device, and the like. The data computer is used for converting the preprocessed data into formatted information according to a point-to-point communication information standard, the interface control processor is used for converting the formatted information according to a target communication protocol and an interface, the interface terminal is used for carrying out dynamic communication and link protocol processing on the converted formatted information, and the radio transmission module is used for carrying out transmission processing on the data after the dynamic communication and the link protocol processing.
A data computer in a peer-to-peer communication system is typically connected to a corresponding terminal computer for performing the processing of formatted information. The hardware of the data computer is usually a computer, which mainly receives and arranges various data into a standard data format, and the input/output buffer in the computer is used for storing and forwarding the data, and further receives and processes the data sent by other communication devices of the terminal.
The interface control processor has the main function of completing the conversion of protocols and interfaces of different types of communication systems. In general, the information exchanged by the peer-to-peer communication system has a certain format, and the purpose is to ensure the real-time performance and the consistency of understanding of information transmission. The wireless transmission module generally consists of a wireless transmission channel and an interface terminal, and the interface terminal receives, transmits and processes data under the control of a communication protocol. The interface terminal machine is a core component unit of the point-to-point communication system, and mainly comprises encryption equipment, a network controller, a modem and the like. The main purpose of the encryption device is to ensure the security of the data transmitted in the system. The message protocol and communication procedure are usually completed in the interface terminal machine, which is responsible for information exchange and affects the work of the whole communication system. Because of the need to implement dynamic communication and link protocol of the peer-to-peer communication system, the interface terminal must have anti-interference capability, anti-interception capability and higher transmission rate. The interface terminals in the communication system are networked according to a certain communication protocol, so that information exchange is facilitated, and the network protocol can be used for maintaining the efficient and orderly operation of the network.
The general working process of the point-to-point communication system is that a computer converts data information to be sent by the unit into formatted information through a data system according to a point-to-point communication information standard, the formatted information is received and processed by a terminal according to a point-to-point network communication system after interface processing and conversion, the formatted information is read through a transmission system after the interface processing and conversion, and the formatted information is displayed in a graphical symbol mode.
And S12, inputting the target communication protocol into the first device and the second device, and connecting the first device and the second device with the terminal computer.
The purpose of this step is to establish communication between the first device and the second device, and to perform mutual transmission and reception of information, and a spread spectrum communication system may be adopted. The work flow is that the sender firstly encodes the signal generated by the information source to form the information code, then multiplies the information code by the pseudo random code, and then modulates the carrier wave by the multiplied information code. The receiver generates a local reference pseudo-random code basically synchronous with the pseudo-code of the transmitter through a clock source, correlates with the received signal, despreads by utilizing the good correlation characteristic of the pseudo-random code, and then performs coherent demodulation and filtering on the despread signal and the signal generated by the local oscillator to recover the original baseband signal. By adopting the spread spectrum communication system, the good autocorrelation of the pseudo-random code can be utilized to carry out XOR on the pseudo-random code and the information code, so that the bandwidth of the signal of the fast frequency hopping point-to-point communication system is expanded and transmitted, and the bandwidth of the expanded fast frequency hopping signal is higher than that of the original signal by multiple orders of magnitude, thereby enhancing the anti-interference capability of the point-to-point communication system.
For example, the selection of the target communication protocol operating parameter may include the following: the frame rate of channel transmission is 9.5703125kbps, the symbol rate after convolutional coding is 19.140625kbps, 1024-bit pseudo code spreading is adopted, the spreading code rate is 9.8MHz, and 2 symbol bits occupy one pseudo code period.
Instruction data: the RS232 serial port is adopted for data communication, the Baud rate is 38400bps, 8-bit data bits and 1-bit stop bits are adopted, and no check is performed. Transparent transmission, the data volume is more than or equal to 7.6 kbps. (limit theoretical value 9.5703125kbps 64/80 ═ 7.65625 kbps).
Setting parameters: signal bandwidth: 6.4 kHz; bandwidth of spreading code: 13.1072 MHz; information code frequency: 6.4 KHz; band-pass sampling frequency: 52.4288 MHz; length of information code: 20.
the terminal computer is mainly used for realizing ground data sending client and airborne received data testing, wherein the ground data sending client can realize basic user data sending (control instructions and the like) and can send data to add a timestamp; the position of the user data in the whole structural frame can be dynamically set; code reconfiguration setting control can be performed, and since the reconfiguration command at the receiving end is extracted from the decoded data, the receiving end responds to the switching command only when the link is locked. The airborne data receiving test end mainly receives data sent by the ground in real time and detects the validity of the information.
S13, establishing communication between the first device and the second device, applying various interference sources with different styles and different frequencies to the first device and the second device in the communication area, and acquiring the working states of the first device and the second device through the terminal computer.
Under the condition of normal data receiving and transmitting, interference is implemented by using interference equipment, the power and the pattern of the interference are continuously adjusted, and the data sent and received by a platform, namely a terminal computer, is analyzed to judge the data communication transmission condition. The interference source comprises broadband blocking interference, partial frequency band interference and forwarding type deception interference, and index parameters of the broadband blocking interference comprise: power suppression degree, frequency suppression degree, synchronization time and error rate; the index parameters of the partial band interference comprise: power suppression degree, space suppression degree, interference separation degree and error rate; the index parameters of the forwarding type deception jamming include: delay suppression, power suppression and false signal rate.
The broadband blocking interference is multi-channel interference which can interfere all communication modes in a certain frequency band, does not generally require complex reconnaissance system coordination, and is mainly dependent on providing communication frequency bands and signal power for reconnaissance. Broadband blocking interference directly attacks the channel capacity of the communication system. The wideband block jammer signal may be generated by modulating a high rate random code onto the frequency band to be jammer, and to prevent energy leakage, a level of wideband filtering is added prior to power amplification. The center frequency of the broadband blocking interference is 4.4 GHz.
The interference bandwidth of the partial band interference is only a portion of the signal bandwidth. And therefore has similar effect to the broadband noise interference. The interference frequency f can be set j ＝f 0 4.4GHz, carrier suppression factor K L ＝1。
Both of the above interference patterns are used in the case of unknown communication system signals. In practice, the deceptive interference is the best interference pattern if the parameters such as spreading codes are known. The signals of the deceptive jamming have similar characteristics with the signals of the communication system, and the repeater jamming and the random binary code modulation jamming belong to the deceptive jamming.
And S14, determining the comprehensive anti-interference performance of the simulated point-to-point communication system according to the working state based on the pre-constructed anti-interference performance evaluation model.
Specifically, before determining the comprehensive anti-interference performance of the analog point-to-point communication system, the method further includes: and constructing an anti-interference performance evaluation model according to the index parameters of the broadband blocking interference, the index parameters of the partial frequency band interference and the index parameters of the forwarding type deception interference. And according to the index parameters of the broadband blocking interference, the index parameters of the partial frequency band interference and the index parameters of the forwarding type deception interference, constructing an anti-interference performance evaluation model, which comprises the following steps: constructing a first-level evaluation layer according to the power suppression degree, the frequency suppression degree, the synchronous time and the error rate of broadband blocking interference, the power suppression degree, the space suppression degree, the interference separation degree and the error rate of partial frequency band interference, the time delay suppression degree, the power suppression degree and the error rate of forwarding type deception interference; constructing a second-level evaluation layer according to the broadband blocking interference, the partial frequency band interference and the forwarding type deception interference; and determining the comprehensive anti-interference performance according to the grading result of the second-level evaluation layer, constructing a third-level evaluation layer, and constructing an anti-interference performance evaluation model comprising the first-level evaluation layer, the second-level evaluation layer and the third-level evaluation layer.
Specifically, the construction of the first-level evaluation layer comprises the following steps: determining the power suppression degree, the frequency suppression degree, the synchronization time and the error rate of broadband blocking interference, the power suppression degree, the space suppression degree, the interference separation degree and the error rate of partial frequency band interference, and the membership degree of the delay suppression degree, the power suppression degree and the error rate of forwarding type deception interference according to the gradient function; and carrying out fuzzy mapping on the membership degree, and establishing a membership degree matrix as a first-level evaluation layer.
Specifically, the construction of the second-level evaluation layer comprises the following steps: dividing the membership degree matrix into three sub-membership degree matrices, wherein the three sub-membership degree matrices are respectively a broadband blocking interference resisting matrix, a partial frequency band interference resisting matrix and a forwarding deception interference resisting matrix; respectively determining evaluation vectors of a broadband blocking interference resisting matrix, a partial frequency band interference resisting matrix and a forwarding spoofing interference resisting matrix; and constructing a second-stage evaluation layer according to the evaluation vector. And determining evaluation vectors of the anti-broadband blocking interference matrix, the anti-partial frequency band interference matrix and the anti-forwarding spoofing interference matrix respectively, wherein the evaluation vectors comprise: and solving an evaluation vector of the anti-broadband blocking interference matrix, an evaluation vector of the anti-partial frequency band interference matrix and an evaluation vector of the anti-forwarding deception interference matrix by adopting a characteristic root method.
Specifically, the third-level evaluation layer is constructed, and the method comprises the following steps: and calculating a comprehensive evaluation vector based on a preset rule, and constructing a third-level evaluation layer. Correspondingly, the method for determining the comprehensive anti-interference performance of the analog point-to-point communication system comprises the following steps: determining an interval range of the comprehensive evaluation vector; and determining the comprehensive anti-interference performance of the analog point-to-point communication system according to the interval range and the preset grade interval range.
As shown in fig. 2, the interference immunity evaluation model includes three levels, a first level is an interference immunity evaluation model including 11 index parameters at the lowermost layer, a second level is an intermediate layer including three interference types, and a third level is a final result calculation layer, that is, the comprehensive interference immunity evaluation layer in fig. 2. The three-level performance evaluation index shown in the diagram can be represented by A, B, C with four symbols, such as a representing the comprehensive anti-interference capability, B1 representing the anti-wideband blocking interference capability, B2 representing the anti-partial band interference capability, B3 representing the anti-forward spoofing interference capability, and C11 representing the power suppression degree, and similarly, the sub-capability indexes of the first level can be represented by CXX respectively. And in combination with the index hierarchical structure, the factor set is divided into B, C two levels. Wherein a ═ is a factor set of a, (B1, B2, B3), B1 ═ is (C11, C12, C13, C14) a factor set of B1, and so on for the rest of the factor sets according to the index hierarchy.
The weight set is determined in correspondence with the factor set, the weight set corresponding to the factor set, e.g., A, being denoted as ω A ＝(b 1 ,b 2 ,b 3 ) The weight set corresponding to the factor set of B1 is denoted as ω B1 ＝(c 11 ,c 12 ,c 13 ,c 14 ) The remaining weight sets and so on. Each weight set should satisfy the normalization requirement, and the weight sum of each set is equal to 1. The weight corresponding to each level of factors is determined by an analytic hierarchy process, and the implementation method is as follows:
and establishing a comparison judgment matrix. Generally, the weight values in an expert scoring mechanism are determined by means of empirical values, certain subjective errors exist, and the anti-interference performance under different interference types is measured in the research, so that the weight values can be determined by adopting a quantitative analysis method.
And determining judgment matrixes of different anti-interference indexes according to different criteria. A comparison matrix of different anti-interference capacities of the unmanned aerial vehicle measurement and control system from weak to strong is obtained by measuring anti-interference indexes.
And calculating a weight vector. At present, the calculation of the weight vector includes a summation method, a root method, a characteristic root method, a logarithm least square method, a least square method and other methods. And solving the weight vector of the judgment matrix by adopting a characteristic root method. The characteristic root method takes a normalized characteristic vector corresponding to the maximum characteristic root of the judgment matrix as a weight vector of the judgment matrix, namely:
BW＝λ max W
wherein λ is max Judging the maximum characteristic root of the matrix B; w is the corresponding characteristic vector, W is obtained through calculation, and W is the weight vector after normalization processing.
And (5) detecting consistency. The decision matrix is usually inconsistent, but in order to use the feature vector as the weight vector of the compared factor, the degree of inconsistency should be within an allowable range. The consistency ratio is used as an index for judging the consistency detection of the matrix.
After a three-level anti-interference performance evaluation model is constructed, specific implementation application of the model is illustrated as follows: according to the determined factor set and evaluation set, carrying out membership fuzzy mapping on the first-level indexes to establish a membership matrix R, wherein the membership matrix R is (R) because the first-level indexes have 11 items in total ij ) I 1, 11j 1,2,3, R is an 11 row 3 column matrix. And the membership degree of each comprehensive anti-interference factor is determined by adopting a reference function method and a gradient function. The first-level indexes are relatively mature equipment performance indexes, wherein the membership degrees of some indexes can be obtained by a performance index calculation formula, and the membership degrees of some indexes are obtained by experimental statistics.
The larger the membership value determined by the evaluation set is, the better the anti-interference capability of the system is. Therefore, a gradient function may be used to calculate or determine the degree of membership of each performance indicator to the interference rejection. The general form of the gradient function is:
wherein x is the function value of the index, a is the standard value of the index, a 1 And a 2 For two different boundary widths of the trapezoidal membership function, a 1 ＜a 2 。
Since the effect of interference only reduces the performance metric value, but does not enhance the metric value, the term takes the lower half of the trapezoidal function, i.e. a reduced half trapezoidal distribution:
in the formula a 1 And a 2 Can be determined by theoretical calculation, numerical simulation or experimental statistics.
According to the hierarchical structure of the index system, in order to calculate the comprehensive evaluation vector of each layer, the matrix R must be decomposed into the following 3 sub-membership degree matrices.
Corresponding to the partial frequency band interference: r 1 ＝(r ij ) I 1, 4, j 1, 3; corresponding to the resistance to broadband blocking interference: r 2 ＝(r ij ) I-5, 8, j-1, 3; corresponding to the anti-forwarding spoofing interference: r 3 ＝(r ij ),i＝9,10,11,j＝1,···3。
And calculating comprehensive evaluation vectors of all levels. Second-level comprehensive evaluation vectors of 3, B i,ωC ＝ω B R j And i 1 · 3, each representing a comprehensive evaluation vector of 3 second-stage sub-capability indicators, ω B And the weight vectors are respectively the weight vectors of the first-level sub-capability indexes corresponding to the 3 sub-membership degree matrixes. .
The first overall evaluation vector, i.e. the interference rejection performance evaluation vector a ═ b 1 b 2 b 3 ]·[B 1,ωB T B 2,ωB T B 3,ωB T ] T 。
An evaluation value is calculated. V is A.E T . Judging which interval of five equal interval intervals of the evaluation set the value falls into, the result of the comprehensive evaluation of the anti-interference performance is the evaluation grade corresponding to the interval, if the value falls into the interval [0.8, 1]If the level of the comprehensive anti-interference capability of the system is 'good', the rest are similar, and the description is not repeated. Therefore, comprehensive test evaluation of the anti-interference performance of the point-to-point communication system under different interference types is obtained.
In the method for evaluating the comprehensive anti-interference performance of the peer-to-peer communication system provided by the embodiment, a simulated peer-to-peer communication system is constructed by utilizing a radio technology, and comprises first equipment and second equipment; inputting a target communication protocol into first equipment and second equipment, and connecting the first equipment and the second equipment with a terminal computer; establishing communication between first equipment and second equipment, applying various interference sources with different styles and different frequencies to the first equipment and the second equipment in a communication area, and acquiring working states of the first equipment and the second equipment through a terminal computer; the comprehensive anti-interference performance of the simulated point-to-point communication system is determined according to the working state based on the pre-constructed anti-interference performance evaluation model, so that the anti-interference performance of the point-to-point communication system under different types of interference sources can be accurately and quickly tested by simulating the point-to-point communication system and applying different types of interference, and a certain theoretical basis is provided for formulating different anti-interference strategies.
Based on the same general inventive concept, the application also protects a comprehensive anti-interference performance evaluation device of the point-to-point communication system.
Fig. 3 is a schematic structural diagram of an apparatus for evaluating comprehensive anti-interference performance of a peer-to-peer communication system according to an embodiment of the present invention.
As shown in fig. 3, the device for evaluating the comprehensive anti-interference performance of the peer-to-peer communication system according to this embodiment includes:
an analog system building module 10 for building an analog peer-to-peer communication system using radio technology, the analog peer-to-peer communication system comprising a first device and a second device;
the simulation system communication module 20 is used for inputting a target communication protocol into the first device and the second device, and connecting the first device and the second device with the terminal computer;
the system interference simulation module 30 is configured to establish communication between the first device and the second device, apply multiple interference sources with different patterns and different frequencies to the first device and the second device in a communication area, and obtain working states of the first device and the second device through a terminal computer;
and the system performance evaluation module 40 is used for determining the comprehensive anti-interference performance of the simulated point-to-point communication system according to the working state based on a pre-constructed anti-interference performance evaluation model.
The comprehensive anti-interference performance evaluation device for the point-to-point communication system provided by the embodiment constructs a simulated point-to-point communication system by using a radio technology, wherein the simulated point-to-point communication system comprises first equipment and second equipment; inputting a target communication protocol into first equipment and second equipment, and connecting the first equipment and the second equipment with a terminal computer; establishing communication between first equipment and second equipment, applying various interference sources with different styles and different frequencies to the first equipment and the second equipment in a communication area, and acquiring working states of the first equipment and the second equipment through a terminal computer; the comprehensive anti-interference performance of the simulated point-to-point communication system is determined according to the working state based on the pre-constructed anti-interference performance evaluation model, so that the anti-interference performance of the point-to-point communication system under different types of interference sources can be accurately and quickly tested by simulating the point-to-point communication system and applying different types of interference, and a certain theoretical basis is provided for formulating different anti-interference strategies.
Embodiments of the apparatus parts have been described in detail in the corresponding method embodiments, so that no specific explanation is given to the corresponding apparatus parts, which can be understood by referring to each other.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
It is understood that the same or similar parts in the above embodiments may be mutually referred to, and the same or similar parts in other embodiments may be referred to for the content which is not described in detail in some embodiments.
It should be noted that, in the description of the present invention, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Further, in the description of the present invention, the meaning of "a plurality" means at least two unless otherwise specified.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and alternate implementations are included within the scope of the preferred embodiment of the present invention in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present invention.
It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, and when the program is executed, the program includes one or a combination of the steps of the method embodiments.
In addition, functional units in the embodiments of the present invention may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a stand-alone product, may also be stored in a computer readable storage medium.
The storage medium mentioned above may be a read-only memory, a magnetic or optical disk, etc.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (9)
1. A comprehensive anti-interference performance evaluation method for a point-to-point communication system is characterized by comprising the following steps:
constructing an analog peer-to-peer communication system using radio technology, the analog peer-to-peer communication system comprising a first device and a second device;
inputting a target communication protocol to the first device and the second device, and connecting the first device and the second device with a terminal computer;
establishing communication between the first equipment and the second equipment, applying various interference sources with different styles and different frequencies to the first equipment and the second equipment in a communication area, and acquiring the working states of the first equipment and the second equipment through the terminal computer;
determining the comprehensive anti-interference performance of the simulated point-to-point communication system according to the working state based on a pre-constructed anti-interference performance evaluation model;
wherein the interference source comprises broadband blocking interference, partial frequency band interference and repeater spoofing interference;
correspondingly, before determining the comprehensive anti-interference performance of the analog point-to-point communication system, the method further includes:
constructing a first-level evaluation layer according to the power suppression degree, the frequency suppression degree, the synchronization time and the error rate of the broadband blocking interference, the power suppression degree, the space suppression degree, the interference separation degree and the error rate of the partial frequency band interference, and the delay suppression degree, the power suppression degree and the error rate of the forwarding type deception interference;
constructing a second-level evaluation layer according to the broadband blocking interference, the partial frequency band interference and the forwarding type deception interference;
and determining comprehensive anti-interference performance according to the grading result of the second-level evaluation layer, constructing a third-level evaluation layer, and constructing an anti-interference performance evaluation model comprising the first-level evaluation layer, the second-level evaluation layer and the third-level evaluation layer.
2. The method according to claim 1, wherein the first device and the second device each comprise a data computer, an interface control processor, an interface terminal and a radio transmission module;
the data computer is used for converting the preprocessed data into formatted information according to a point-to-point communication information standard, the interface control processor is used for converting the formatted information according to a target communication protocol and an interface, the interface terminal is used for performing dynamic communication and link protocol processing on the converted formatted information, and the radio transmission module is used for performing transmission processing on the data after the dynamic communication and link protocol processing.
3. The method of claim 1, wherein the target communication protocol operating parameters include:
the frame rate of channel transmission is 9.5703125kbps, the symbol rate after convolutional coding is 19.140625kbps, 1024-bit pseudo code spreading is adopted, the spreading code rate is 9.8MHz, and 2 symbol bits occupy one pseudo code period.
4. The method according to claim 3, wherein the index parameters of broadband blocking interference comprise: power suppression degree, frequency suppression degree, synchronization time and error rate;
the index parameters of the partial frequency band interference comprise: power suppression degree, space suppression degree, interference separation degree and error rate;
the index parameters of the forwarding type deception jamming comprise: delay suppression, power suppression and false signal rate.
5. The method for evaluating the comprehensive anti-interference performance of the peer-to-peer communication system according to claim 1, wherein the constructing a first-level evaluation layer comprises:
determining a power suppression degree, a frequency suppression degree, a synchronization time and a bit error rate of the broadband blocking interference, a power suppression degree, a space suppression degree, an interference separation degree and a bit error rate of the partial frequency band interference, and a membership degree of a delay suppression degree, a power suppression degree and a signal error rate of the forwarding type deception interference according to a gradient function;
and carrying out fuzzy mapping on the membership degree, and establishing a membership degree matrix as the first-level evaluation layer.
6. The method for evaluating the integrated interference resistance of the peer-to-peer communication system according to claim 5, wherein the constructing the second evaluation layer comprises:
dividing the membership matrix into three sub-membership matrices, wherein the three sub-membership matrices are respectively a broadband blocking interference resisting matrix, a partial frequency band interference resisting matrix and a forwarding deception interference resisting matrix;
respectively determining evaluation vectors of the broadband blocking interference resisting matrix, the partial frequency band interference resisting matrix and the forwarding spoofing interference resisting matrix;
and constructing a second-level evaluation layer according to the evaluation vector.
7. The method for evaluating the comprehensive anti-interference performance of the peer-to-peer communication system according to claim 6, wherein the determining the evaluation vectors of the anti-wideband blocking interference matrix, the anti-partial band interference matrix and the anti-forwarding spoofing interference matrix respectively comprises:
and solving the evaluation vector of the anti-broadband blocking interference matrix, the evaluation vector of the anti-partial frequency band interference matrix and the evaluation vector of the anti-forwarding spoofing interference matrix by adopting a characteristic root method.
8. The method for evaluating the comprehensive anti-interference performance of the peer-to-peer communication system according to claim 6, wherein the constructing a third-level evaluation layer comprises:
calculating a comprehensive evaluation vector based on a preset rule, and constructing a third-level evaluation layer;
correspondingly, the determining the comprehensive anti-interference performance of the analog point-to-point communication system includes:
determining an interval range of the comprehensive evaluation vector;
and determining the comprehensive anti-interference performance of the analog point-to-point communication system according to the interval range and the preset grade interval range.
9. An integrated anti-interference performance evaluation device for a point-to-point communication system, comprising:
an analog system building module for building an analog peer-to-peer communication system using radio technology, the analog peer-to-peer communication system comprising a first device and a second device;
the simulation system communication module is used for inputting a target communication protocol to the first equipment and the second equipment and connecting the first equipment and the second equipment with a terminal computer;
the system interference simulation module is used for establishing communication between the first equipment and the second equipment, applying various interference sources with different styles and different frequencies to the first equipment and the second equipment in a communication area, and acquiring the working states of the first equipment and the second equipment through the terminal computer;
the system performance evaluation module is used for determining the comprehensive anti-interference performance of the simulated point-to-point communication system according to the working state based on a pre-constructed anti-interference performance evaluation model;
wherein the interference source comprises broadband blocking interference, partial frequency band interference and repeater spoofing interference;
correspondingly, the system performance evaluation module is further configured to:
constructing a first-level evaluation layer according to the power suppression degree, the frequency suppression degree, the synchronization time and the error rate of the broadband blocking interference, the power suppression degree, the space suppression degree, the interference separation degree and the error rate of the partial frequency band interference, and the delay suppression degree, the power suppression degree and the error rate of the forwarding type deception interference;
constructing a second-level evaluation layer according to the broadband blocking interference, the partial frequency band interference and the forwarding type deception interference;
and determining comprehensive anti-interference performance according to the grading result of the second-level evaluation layer, constructing a third-level evaluation layer, and constructing an anti-interference performance evaluation model comprising the first-level evaluation layer, the second-level evaluation layer and the third-level evaluation layer.
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