CN115913336B - Satellite communication system efficiency evaluation method and device - Google Patents
Satellite communication system efficiency evaluation method and device Download PDFInfo
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Abstract
The invention discloses a satellite communication system efficiency evaluation method and device, wherein the method comprises the following steps: constructing a satellite communication system; the satellite communication system comprises M satellite communication systems; constructing a performance evaluation index set of the satellite communication system; the efficacy evaluation index set comprises a system construction degree, a network connection degree and an application support degree; the system construction degree comprises a system capacity matching degree and a satellite effective utilization rate; the network connectivity comprises network average connectivity and network survivability; the application support degree comprises satellite coverage rate, access success rate and service quality; and processing the performance evaluation index set of the satellite communication system to obtain a performance evaluation result of the satellite communication system. The invention comprehensively analyzes the efficiency of satellite communication system construction, network communication and application support, and provides design support for future satellite communication system overall construction and fusion application.
Description
Technical Field
The present invention relates to the field of satellite communications technologies, and in particular, to a method and an apparatus for evaluating performance of a satellite communications system.
Background
With the wider and wider application of satellite communication in daily life of military, commercial and people, the interconnection, intercommunication and fusion application of various satellite communication systems become a necessary trend, and it is necessary to comprehensively evaluate the overall efficiency of the existing satellite communication system from the aspect of the system, find a short board for system construction application, and provide support for planning and construction of future systems. The current performance evaluation methods applied to satellite communication systems are mainly directed to a single system or device. If the communication satellite performance evaluation adopts an evaluation model based on a fuzzy theory, the overall performance of the Oriental red series communication satellite is evaluated in aspects of transponder power, transponder quality, working life and the like; the performance evaluation of the constellation satellite communication system evaluates the comprehensive performance of the single constellation system in the aspects of coverage, access, service quality, system guarantee and the like.
In the prior art, the satellite communication efficiency evaluation method is efficiency evaluation of single equipment, and the constellation satellite communication system efficiency evaluation is efficiency evaluation of a single system, is not suitable for satellite communication system efficiency evaluation, and cannot comprehensively reflect the capabilities of system construction coordination, network interconnection interoperability, system application guarantee and the like.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a satellite communication system efficiency evaluation method and device, which can build a satellite communication system key index system from three dimensions of system construction degree, network connectivity and application support degree by aiming at overall construction of various satellite communication systems and performance evaluation of fusion application among satellite systems, ground network and service system, acquire evaluation index values by adopting an analysis method, a simulation method and the like, normalize and aggregate indexes, and obtain an overall efficiency evaluation result of the satellite communication system.
In order to solve the above technical problems, a first aspect of the present invention discloses a method for evaluating performance of a satellite communication system, where the method includes:
s1, constructing a satellite communication system; the satellite communication system comprises M satellite communication systems;
s2, constructing a performance evaluation index set of the satellite communication system; the efficacy evaluation index set comprises a system construction degree, a network connection degree and an application support degree; the system construction degree comprises a system capacity matching degree and a satellite effective utilization rate; the network connectivity comprises network average connectivity and network survivability; the application support degree comprises satellite coverage rate, access success rate and service quality;
And S3, processing the performance evaluation index set of the satellite communication system to obtain a performance evaluation result of the satellite communication system.
In an optional implementation manner, in a first aspect of the embodiment of the present invention, the method for calculating the system capacity matching degree includes:
processing the M satellite communication systems by using a system capacity matching degree calculation model to obtain the system capacity matching degree
The system capacity matching degree calculation model is as follows:
wherein CS is i For the satellite capacity of the ith satellite communication system, i is more than or equal to 1 and less than or equal to M, CG i For the ground station capacity of the ith satellite communication system, CU i CS for subscriber station traffic of ith satellite communication system max CG being the maximum of the M satellite capacities max For the maximum of the M ground station capacities, CU max For the maximum of M subscriber station traffic,for the system capacity of the ith satellite communication system, < > j->
In an optional implementation manner, in the first aspect of the embodiment of the present invention, the method for calculating the effective satellite usage rate includes:
processing the M satellite communication systems by using a satellite effective utilization rate calculation model to obtain satellite effective utilization rates SR;
the satellite effective utilization rate calculation model is as follows:
Wherein the M satellite communication systems share N satellites, TL n For the effective service life of the nth satellite in orbit, N is more than or equal to 1 and less than or equal to N, TL n ＝T3 n -(T2 n -T1 n )，T3 n For the service life of the nth satellite, T1 n T2 is the transmission time of the nth satellite n Is the small-scale test time of the nth satellite.
In an optional implementation manner, in a first aspect of the embodiment of the present invention, the method for calculating the average connectivity of the network includes:
processing the satellite communication system by using a network average connectivity calculation model to obtain the network average connectivity Z;
the network average connectivity calculation model is as follows:
wherein, the liquid crystal display device comprises a liquid crystal display device,n is the number of nodes in the undirected communication graph G of the satellite communication system, G= (V, E), V= { V 1 ,v 2 ,…,v n The node set in the undirected connectivity graph G, v 1 ,v 2 ,…,v n Which represents a number of n nodes and,for edge set, add>Representing node v i And node v j L is more than or equal to 0 and less than or equal to m ij A direct link, m ij For node v i And node v j Number of direct links between d ij For node v i And node v j The degree of communication between the two;
by means of node v i And node v j The connectivity calculation model between the nodes is used for obtaining a node v i And node v j Degree of communication d between ij ；
The node v i And node v j The calculation model of the connectivity between the two is:
wherein the method comprises the steps ofk > 1 is node v i And nodev j Indirect connectivity between them, k is hop count, < >>
In a first aspect of the embodiment of the present invention, as an optional implementation manner, the method for calculating the network survivability is:
s21, carrying out N times of attacks on the satellite communication system by utilizing a method of randomly attacking a network node;
and S22, calculating the average connectivity of the network of the satellite communication system after N times of attacks to obtain the network destructiveness ZL.
In an optional implementation manner, in the first aspect of the embodiment of the present invention, the method for calculating the satellite coverage rate includes:
processing the satellite communication system by using a satellite coverage rate calculation model to obtain the satellite coverage rate SCA;
the satellite coverage rate calculation model is as follows:
wherein onceCR is a heavy coverage rate of an nth coverage area, N is more than or equal to 1 and less than or equal to N, N is the number of coverage areas, twicCR is a double coverage rate of the nth coverage area, thirdCR is a triple coverage rate of the nth coverage area, satCT is a normalized value of a coverage time of the nth coverage area, satCTI is a normalized value of a coverage interval of the nth coverage area, a is a weight of a heavy coverage rate, beta is a weight of a double coverage rate, gamma is a weight of a triple coverage rate, delta is a weight of a normalized value of a coverage time, epsilon is a weight of a normalized value of a coverage interval, a+beta+gamma+delta+epsilon=1, Representing the relative importance of the different coverage areas, < +.>
As an optional implementation manner, in the first aspect of the embodiment of the present invention, the method for calculating the access success rate includes:
processing the M satellite communication systems by using an access success rate calculation model to obtain the access success rate SucR;
the access success rate calculation model is as follows:
wherein, sucARN i ACCRN for the number of times the ith satellite communication system successfully allocates resources to a requesting user i The total number of the access requests of the ith satellite communication system is equal to or more than 1 and equal to or less than M.
In an optional implementation manner, in a first aspect of the embodiment of the present invention, the method for calculating the service quality of service includes:
processing the M satellite communication systems by using a service quality calculation model to obtain the service quality QoS;
the business service quality calculation model is as follows:
wherein K is the number of services enjoying network service in the satellite communication system within a period of time,the average end-to-end time delay of the kth service is 1.ltoreq.k.ltoreq.k +.>Delay jitter for the kth service; />For the packet loss rate of the kth service, α is an end-to-end delay weight, β is a delay jitter weight, γ is a packet loss rate weight, and α+β+γ=1.
In a first aspect of the embodiment of the present invention, the processing the set of performance evaluation indexes of the satellite communication system to obtain a performance evaluation result of the satellite communication system includes:
processing the system construction degree, the network connection degree and the application support degree by using a satellite communication system efficiency evaluation model to obtain a satellite communication system efficiency evaluation result CE;
the satellite communication system efficiency evaluation model is as follows:
wherein alpha is the weight of the system construction degree, beta is the weight of the network connectivity degree, gamma is the weight of the application support degree, alpha 1 Matching degree for the system capacityWeights, alpha 2 Weighting the satellite effective usage SR, beta 1 Weighting the average connectivity Z of the network, beta 2 Gamma is the weight of the network survivability ZL 1 For the weight of the satellite coverage SCA, γ 2 Gamma is the weight of the access success rate SucR 3 α+β+γ=1, α being a weight of the quality of service QoS 1 +α 2 ＝1，β 1 +β 2 ＝1，γ 1 +γ 2 +γ 3 ＝1。
The second aspect of the embodiment of the invention discloses a satellite communication system efficiency evaluation device, which comprises:
the satellite communication system construction module is used for constructing a satellite communication system; the satellite communication system comprises M satellite communication systems;
The index system construction module is used for constructing a performance evaluation index set of the satellite communication system; the efficacy evaluation index set comprises a system construction degree, a network connection degree and an application support degree; the system construction degree comprises a system capacity matching degree and a satellite effective utilization rate; the network connectivity comprises network average connectivity and network survivability; the application support degree comprises satellite coverage rate, access success rate and service quality;
and the efficiency evaluation module is used for processing the efficiency evaluation index set of the satellite communication system to obtain a satellite communication system efficiency evaluation result.
In a second aspect of the embodiment of the present invention, as an optional implementation manner, the method for calculating the system capacity matching degree is:
processing the M satellite communication systems by using a system capacity matching degree calculation model to obtain the system capacity matching degree
The system capacity matching degree calculation model is as follows:
wherein CS is i For the satellite capacity of the ith satellite communication system, i is more than or equal to 1 and less than or equal to M, CG i For the ground station capacity of the ith satellite communication system, CU i CS for subscriber station traffic of ith satellite communication system max CG being the maximum of the M satellite capacities max For the maximum of the M ground station capacities, CU max For the maximum of M subscriber station traffic,for the system capacity of the ith satellite communication system, < > j->
In a second aspect of the embodiment of the present invention, the method for calculating the effective satellite usage rate includes:
processing the M satellite communication systems by using a satellite effective utilization rate calculation model to obtain satellite effective utilization rates SR;
the satellite effective utilization rate calculation model is as follows:
wherein the M satellite communication systems share N satellites, TL n For the effective service life of the nth satellite in orbit, N is more than or equal to 1 and less than or equal to N, TL n ＝T3 n -(T2 n -T1 n )，T3 n For the service life of the nth satellite, T1 n T2 is the transmission time of the nth satellite n Is the small-scale test time of the nth satellite.
In a second aspect of the embodiment of the present invention, the method for calculating the average connectivity of the network includes:
processing the satellite communication system by using a network average connectivity calculation model to obtain the network average connectivity Z;
the network average connectivity calculation model is as follows:
wherein, the liquid crystal display device comprises a liquid crystal display device,n is the number of nodes in the undirected communication graph G of the satellite communication system, G= (V, E), V= { V 1 ,v 2 ,…,v n The node set in the undirected connectivity graph G, v 1 ,v 2 ,…,v n Which represents a number of n nodes and,for edge set, add>Representing node v i And node v j L is more than or equal to 0 and less than or equal to m ij A direct link, m ij For node v i And node v j Number of direct links between d ij For node v i And node v j The degree of communication between the two;
by means of node v i And node v j The connectivity calculation model between the nodes is used for obtaining a node v i And node v j Degree of communication d between ij ；
The node v i And node v j The calculation model of the connectivity between the two is:
wherein the method comprises the steps ofk > 1 is node v i And node v j Indirect connectivity between them, k is hop count, < >>
In a second aspect of the embodiment of the present invention, as an optional implementation manner, the method for calculating the network survivability is:
s21, carrying out N times of attacks on the satellite communication system by utilizing a method of randomly attacking a network node;
and S22, calculating the average connectivity of the network of the satellite communication system after N times of attacks to obtain the network destructiveness ZL.
In a second aspect of the embodiment of the present invention, the method for calculating satellite coverage includes:
processing the satellite communication system by using a satellite coverage rate calculation model to obtain the satellite coverage rate SCA;
The satellite coverage rate calculation model is as follows:
wherein onceCR is a heavy coverage rate of an nth coverage area, N is more than or equal to 1 and less than or equal to N, N is the number of coverage areas, twicCR is a double coverage rate of the nth coverage area, thirdCR is a triple coverage rate of the nth coverage area, satCT is a normalized value of a coverage time of the nth coverage area, satCTI is a normalized value of a coverage interval of the nth coverage area, a is a weight of a heavy coverage rate, beta is a weight of a double coverage rate, gamma is a weight of a triple coverage rate, delta is a weight of a normalized value of a coverage time, epsilon is a weight of a normalized value of a coverage interval, a+beta+gamma+delta+epsilon=1,representing the relative importance of the different coverage areas, < +.>
In a second aspect of the embodiment of the present invention, as an optional implementation manner, the method for calculating the access success rate includes:
processing the M satellite communication systems by using an access success rate calculation model to obtain the access success rate SucR;
the access success rate calculation model is as follows:
wherein, sucARN i ACCRN for the number of times the ith satellite communication system successfully allocates resources to a requesting user i For the ith satellite communication systemThe total number of access requests is more than or equal to 1 and less than or equal to M.
In a second aspect of the embodiment of the present invention, as an optional implementation manner, the method for calculating the service quality of service includes:
processing the M satellite communication systems by using a service quality calculation model to obtain the service quality QoS;
the business service quality calculation model is as follows:
wherein K is the number of services enjoying network service in the satellite communication system within a period of time,the average end-to-end time delay of the kth service is 1.ltoreq.k.ltoreq.k +.>Delay jitter for the kth service; />For the packet loss rate of the kth service, α is an end-to-end delay weight, β is a delay jitter weight, γ is a packet loss rate weight, and α+β+γ=1.
In a second aspect of the embodiment of the present invention, the processing the set of performance evaluation indexes of the satellite communication system to obtain a performance evaluation result of the satellite communication system includes:
processing the system construction degree, the network connection degree and the application support degree by using a satellite communication system efficiency evaluation model to obtain a satellite communication system efficiency evaluation result CE;
the satellite communication system efficiency evaluation model is as follows:
wherein alpha is the weight of the system construction degree, beta is the weight of the network connectivity degree, gamma is the weight of the application support degree, alpha 1 Matching degree for the system capacityWeights, alpha 2 Weighting the satellite effective usage SR, beta 1 Weighting the average connectivity Z of the network, beta 2 Gamma is the weight of the network survivability ZL 1 For the weight of the satellite coverage SCA, γ 2 Gamma is the weight of the access success rate SucR 3 α+β+γ=1, α being a weight of the quality of service QoS 1 +α 2 ＝1，β 1 +β 2 ＝1，γ 1 +γ 2 +γ 3 ＝1。
Compared with the prior art, the embodiment of the invention has the following beneficial effects:
(1) The invention provides a performance evaluation method suitable for a satellite communication system, which comprehensively analyzes the performance of the satellite communication system in terms of construction, network communication and application support, and provides design support for future overall construction and fusion application of the satellite communication system.
(2) The system construction degree index is used for measuring the coordination of system construction by associating the matching of physical construction scale and capacity, on one hand, the capacities of the star, the station and the end are matched, and the problems of weak star, strong station, insufficient use or insufficient use of the user and the like of capacity mismatch are avoided, so that the system is cooperatively constructed; on the other hand, the satellite, station and terminal use time are linked, the problems of satellite idling, terminal matching incapacity and the like are avoided, and the uniformity of the construction of the system is improved.
(3) The network connectivity measures the information smoothness of the satellite communication system by quantifying the information accessibility of the user station between the satellite same network system, the satellite cross network system, the satellite network system and the ground network, and the satellite network system and the service system. On the other hand, the importance of the network nodes is analyzed to find out weak points and key points of the network design, so that the design of the network for the damage resistance is enhanced.
(4) The application support is based on the global user ubiquitous access requirement, and the application benefit and the efficiency of the satellite communication system in the user service transmission guarantee are evaluated from the premise of meeting the user requirement to the maximum extent and enhancing the user experience. The satellite communication system not only analyzes the coverage weight and space-time coverage of a satellite communication system aiming at a service area, but also analyzes the resource response capability to a user access request, and simultaneously analyzes the service quality of user business.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flow chart of a method for evaluating performance of a satellite communication system according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a key index system of a performance evaluation method of a satellite communication system according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a satellite communication system performance evaluation device according to an embodiment of the present invention.
Detailed Description
In order to make the present invention better understood by those skilled in the art, the following description will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The terms first, second and the like in the description and in the claims and in the above-described figures are used for distinguishing between different objects and not necessarily for describing a sequential or chronological order. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, apparatus, article, or device that comprises a list of steps or elements is not limited to the list of steps or elements but may, in the alternative, include other steps or elements not expressly listed or inherent to such process, method, article, or device.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the invention. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.
The invention discloses a satellite communication system efficiency evaluation method and device, which comprehensively analyze the efficiency of satellite communication system construction, network communication and application support. The system construction degree is expressed by the system capacity matching degree and the satellite effective utilization rate, and is refined into specific satellite capacity, ground station capacity and user station traffic indexes of each system, so that the system has operability. The network connectivity is expressed by the average connectivity and the network survivability of the network, and is refined into the network topology adjacency matrix operation of the satellite communication system, so that the method has operability. The satellite coverage rate, the user access rate and the service quality representation of the application support degree are defined, and are refined into indexes such as a heavy coverage rate, coverage time, access times, end-to-end time delay and the like, so that the method has operability. The following will describe in detail.
Example 1
Referring to fig. 1, fig. 1 is a flowchart illustrating a method for evaluating performance of a satellite communication system according to an embodiment of the invention. The method for evaluating the performance of the satellite communication system described in fig. 1 is applied to a satellite communication system, for example, performing satellite effective utilization rate evaluation, satellite communication system performance evaluation, etc., which is not limited in the embodiment of the invention. As shown in fig. 1, the satellite communication system performance evaluation method may include the following operations:
s1, constructing a satellite communication system; the satellite communication system comprises a satellite communication system;
s2, constructing a performance evaluation index set of the satellite communication system; the efficacy evaluation index set comprises a system construction degree, a network connection degree and an application support degree; the system construction degree comprises a system capacity matching degree and a satellite effective utilization rate; the network connectivity comprises network average connectivity and network survivability; the application support degree comprises satellite coverage rate, access success rate and service quality;
and S3, processing the performance evaluation index set of the satellite communication system to obtain a performance evaluation result of the satellite communication system.
Optionally, the satellite communication system comprises M satellite communication systems, a ground bearing network, a ground internet and an information system.
The set of performance evaluation indicators of the satellite communication system is shown in fig. 2.
Optionally, the method for calculating the capacity matching degree of the system comprises the following steps:
processing the M satellite communication systems by using a system capacity matching degree calculation model to obtain the system capacity matching degree
The system capacity matching degree calculation model is as follows:
wherein CS is i For the satellite capacity of the ith satellite communication system, i is more than or equal to 1 and less than or equal to M, CG i For the ground station capacity of the ith satellite communication system, CU i CS for subscriber station traffic of ith satellite communication system max CG being the maximum of the M satellite capacities max For the maximum of the M ground station capacities, CU max Traffic for M subscriber stationsIs selected from the group consisting of a maximum value of (c),for the system capacity of the ith satellite communication system, < > j->
Alternatively, satellite capacity, ground station capacity, and subscriber station traffic of the M satellite communication systems are obtained using a simulation method, such as Matlab simulation.
The system capacity matching degree represents the matching degree among satellite capacity, ground station capacity and subscriber station traffic of a plurality of systems.
Optionally, the method for calculating the satellite effective utilization rate includes:
processing the M satellite communication systems by using a satellite effective utilization rate calculation model to obtain satellite effective utilization rates SR;
The satellite effective utilization rate calculation model is as follows:
wherein the M satellite communication systems share N satellites, TL n For the effective service life of the nth satellite in orbit, N is more than or equal to 1 and less than or equal to N, TL n ＝T3 n -(T2 n -T1 n )，T3 n For the service life of the nth satellite, T1 n T2 is the transmission time of the nth satellite n Is the small-scale test time of the nth satellite.
Optionally, obtaining the on-orbit effective service life, the satellite service life, the transmitting time and the satellite small-scale test time of N satellites by an analysis method;
the satellite effective utilization represents the degree of matching of the effective in-orbit life of a plurality of satellites with the satellite life.
Optionally, the method for calculating the average connectivity of the network includes:
processing the satellite communication system by using a network average connectivity calculation model to obtain the network average connectivity Z;
the network average connectivity calculation model is as follows:
wherein, the liquid crystal display device comprises a liquid crystal display device,n is the number of nodes in the undirected communication graph G of the satellite communication system, G= (V, E), V= { V 1 ,v 2 ,…,v n The node set in the undirected connectivity graph G, v 1 ,v 2 ,…,v n Which represents a number of n nodes and,for edge set, add>Representing node v i And node v j L is more than or equal to 0 and less than or equal to m ij A direct link, m ij For node v i And node v j Number of direct links between d ij For node v i And node v j The degree of communication between the two;
By means of node v i And node v j The connectivity calculation model between the nodes is used for obtaining a node v i And node v j Degree of communication d between ij ；
The node v i And node v j The calculation model of the connectivity between the two is:
wherein the method comprises the steps ofk > 1 is node v i And node v j Indirect connectivity between them, k is hop count, < >>
Optionally, a network topology structure (undirected connectivity graph G) of the satellite communication system is constructed by using a graph theory method.
The average connectivity of the network represents the interconnection and interworking degree between a plurality of satellite communication systems, a ground network and a service system.
Optionally, the method for calculating the network survivability includes:
s21, carrying out N times of attacks on the satellite communication system by utilizing a method of randomly attacking a network node;
and S22, calculating the average connectivity of the network of the satellite communication system after N times of attacks to obtain the network destructiveness ZL.
Network survivability represents the average connectivity of a network after the network has been subjected to N attacks, e.g., 20 times.
Optionally, the method for calculating the satellite coverage rate includes:
processing the satellite communication system by using a satellite coverage rate calculation model to obtain the satellite coverage rate SCA;
the satellite coverage rate calculation model is as follows:
wherein onceCR is a weight coverage rate of an nth coverage area, N is more than or equal to 1 and less than or equal to N, N is the number of coverage areas, twicCR is a weight coverage rate of the nth coverage area, thirdCR is a triple coverage rate of the nth coverage area, satCT is a normalized value of a coverage time of the nth coverage area, satCTI is a normalized value of a coverage interval of the nth coverage area, a is a weight of a weight coverage rate, beta is a weight of a double coverage rate, gamma is a weight of a triple coverage rate, delta is a weight of a normalized value of a coverage time, epsilon is a normalized value of a coverage interval The weight of the value, a + beta + gamma + delta + epsilon = 1,representing the relative importance of the different coverage areas, < +.>
Optionally, obtaining a one-time coverage rate, a two-time coverage rate, a three-time coverage rate, a coverage time and a coverage interval of the M satellite communication systems to the N coverage areas by adopting a simulation method (such as STK simulation);
satellite coverage represents a comprehensive assessment of coverage in different regions of the world.
Optionally, the method for calculating the access success rate includes:
processing the M satellite communication systems by using an access success rate calculation model to obtain the access success rate SucR;
the access success rate calculation model is as follows:
wherein, sucARN i ACCRN for the number of times the ith satellite communication system successfully allocates resources to a requesting user i The total number of the access requests of the ith satellite communication system is equal to or more than 1 and equal to or less than M.
Optionally, obtaining the total number of access requests of the satellite communication system and the number of times that the system successfully allocates resources for the requesting user by adopting a simulation method (such as Matlab simulation);
the access success rate represents the proportion of the number of times the user access request successfully responds to the total number of times the user access request is occupied in a period of time.
Optionally, the calculating method of the service quality of service includes:
Processing the M satellite communication systems by using a service quality calculation model to obtain the service quality QoS;
the business service quality calculation model is as follows:
wherein K is the number of services enjoying network service in the satellite communication system within a period of time,the average end-to-end time delay of the kth service is 1.ltoreq.k.ltoreq.k +.>Delay jitter for the kth service; />For the packet loss rate of the kth service, α is an end-to-end delay weight, β is a delay jitter weight, γ is a packet loss rate weight, and α+β+γ=1.
Optionally, obtaining average end-to-end delay, delay jitter and packet loss rate of K services by adopting a simulation method (such as network virtual simulation);
the quality of service refers to the ability of a satellite communications network to provide business services at a guaranteed level of quality.
Optionally, the processing the performance evaluation index set of the satellite communication system to obtain a performance evaluation result of the satellite communication system includes:
processing the system construction degree, the network connection degree and the application support degree by using a satellite communication system efficiency evaluation model to obtain a satellite communication system efficiency evaluation result CE;
the satellite communication system efficiency evaluation model is as follows:
Wherein alpha is the weight of the system construction degree, beta is the weight of the network connectivity degree, gamma is the weight of the application support degree，α 1 Matching degree for the system capacityWeights, alpha 2 Weighting the satellite effective usage SR, beta 1 Weighting the average connectivity Z of the network, beta 2 Gamma is the weight of the network survivability ZL 1 For the weight of the satellite coverage SCA, γ 2 Gamma is the weight of the access success rate SucR 3 α+β+γ=1, α being a weight of the quality of service QoS 1 +α 2 ＝1，β 1 +β 2 ＝1，γ 1 +γ 2 +γ 3 ＝1。
Optionally, the system architecture weight, the network connectivity weight, the application support weight, the system capacity matching weight, the satellite effective utilization weight, the network average connectivity weight, the network survivability weight, the satellite coverage weight, the access success rate weight and the business service quality weight may be obtained through a large number of experiments or through analyzing test data of an actual system, and the invention is not limited.
Optionally, the system construction degree weight, the network connectivity degree weight, the application support degree weight, the system capacity matching degree weight, the satellite effective utilization rate weight, the network average connectivity degree weight, the network survivability weight, the satellite coverage rate weight, the access success rate weight and the business service quality weight can be calculated by using a principal component analysis method, which specifically comprises the following steps:
(1) Known index set x= { x 1 ,x 2 ,…,x p P is the number of indices in the index set;
(2) Calculating a correlation coefficient set R of a set x:
wherein r is ij I, j=1, 2, …, p is x i And x j Is a correlation coefficient of (2);
(3) For characteristics ofSolving the equation |λE-R|=0, taking E as an identity matrix to obtain eigenvalues, and sequencing the eigenvalues lambda 1 ≥λ 2 …≥λ p Not less than 0, and obtaining a feature vector e corresponding to the feature value i ，i＝1,2,…,p；
(4) Calculating the accumulated contribution rate according to the characteristic value:
selecting a characteristic value lambda with a calculated contribution rate exceeding 95% 1 ,λ 2 …λ m Corresponding m principal components;
(5) Calculating coefficient l of original index in different component linear combination ij ：
Wherein e ij For the ith principal component to the original index x j I=1, 2, …, m, j=1, 2, …, p;
(6) Calculating the contribution rate of principal components
(7) Calculating coefficients of original indexes in comprehensive model
(8) Index weight normalization
Alternatively, a performance evaluation model may be constructed to evaluate performance of the satellite communication system. The efficacy evaluation model is:
(1) Scheme layer: a total of 7 evaluation factors, comprising: the system capacity matching degree, the satellite effective utilization rate, the network average connectivity, the network survivability, the satellite coverage rate, the access success rate and the service quality;
(2) An intermediate layer: classifying and summarizing the 7 factors according to the characteristics and the influence modes of the factors, and classifying the factors into 3 types, namely system construction degree, network connection degree and application support degree;
(3) Highest layer: this layer is the final result to be obtained, and the quantized value of the satellite communication system performance evaluation result is obtained.
Constructing a judgment matrix: analyzing two indexes of the system capacity matching degree of the system construction degree and the satellite effective utilization rate, giving importance comparison results, and constructing a judgment matrix A of the system construction degree; the same analysis method is adopted to obtain a judgment matrix B of the network connectivity, and the judgment matrix C of the support degree is applied to further obtain a satellite communication system efficiency evaluation judgment matrix D of the highest layer.
For the judgment matrix A, determining the maximum eigenvalue of the judgment matrix and the eigenvector corresponding to the maximum eigenvalue, namely, the eigenvector meeting the following relation and the corresponding eigenvector AW:
AW＝λ max W
wherein lambda is max To determine the maximum eigenvalue of matrix a, where W is the eigenvector corresponding to the maximum eigenvalue. Calculating the maximum eigenvalue of the judgment matrix and the eigenvector corresponding to the maximum eigenvalue, and normalizing the eigenvector to obtain the weight of each element in the next layer relative to the index of the upper layer subjected to dominant control, wherein the calculation steps are as follows:
calculating the geometric mean value of all elements in each row of the judgment matrix A:
Obtaininga ij To determine the j-th column element of the i-th row in matrix A, will +.>Normalization, i.e.
To obtain a weight vector w= (w) 1 ,w 2 ,...w n ) The weight vector is an approximation of the relative weight of the feature vector corresponding to the largest feature root, i.e., the relative weight of the next layer element and the previous layer;
calculating the maximum eigenvalue lambda of the judgment matrix max ：
Wherein (AW) i N elements are the i-th element of the vector AW. The processing method for the matrixes B, C and D is the same as that of the matrix A.
And (3) checking whether the judgment matrixes A, B and C have consistency, wherein the judgment matrixes A, B and C are respectively a 2-order matrix, a 2-order matrix and a 3-order matrix, and the corresponding correction factors are respectively 0,0,0.58. Finally, the weight vector of each layer of the three judgment matrixes A, B and C relative to the layer above can be obtained. According to the feature vector, the weight vector of each layer is calculated as w a ＝(w 1 ,w 2 )，w b ＝(w 3 ,w 4 )，w c ＝(w 5 ,w 6 ,w 7 ) The weights of 7 evaluation factors relative to the upper layer can be obtained. Obtaining weight vectors w of each layer of the system construction degree, network connection degree and application support degree to the highest-layer satellite communication system efficiency evaluation judgment matrix D d ＝(w d1 ,w d2 ,w d3 )。
Establishing membership function u of 7 evaluation factors 1 (x)、u 2 (x)、u 3 (x)、u 4 (x)、u 5 (x)、u 6 (x)、u 7 (x)。
The comprehensive weight of the system construction degree is as follows
The comprehensive weight of the network connectivity is
The comprehensive weight of the application support degree is as follows
The quantized value of the satellite communication system performance evaluation result is as follows:
example two
Referring to fig. 3, fig. 3 is a flow chart of a satellite communication system performance evaluation device according to an embodiment of the invention. The device for evaluating the performance of the satellite communication system described in fig. 3 is applied to a satellite communication system, for example, to perform satellite effective utilization rate evaluation, satellite communication system performance evaluation, etc., which is not limited in the embodiment of the invention. As shown in fig. 3, the satellite communication system performance evaluation apparatus may include the following operations:
the satellite communication system construction module is used for constructing a satellite communication system; the satellite communication system comprises M satellite communication systems;
the index system construction module is used for constructing a performance evaluation index set of the satellite communication system; the efficacy evaluation index set comprises a system construction degree, a network connection degree and an application support degree; the system construction degree comprises a system capacity matching degree and a satellite effective utilization rate; the network connectivity comprises network average connectivity and network survivability; the application support degree comprises satellite coverage rate, access success rate and service quality;
And the efficiency evaluation module is used for processing the efficiency evaluation index set of the satellite communication system to obtain a satellite communication system efficiency evaluation result.
Optionally, the method for calculating the capacity matching degree of the system comprises the following steps:
processing the M satellite communication systems by using a system capacity matching degree calculation model to obtain the system capacity matching degree
The system capacity matching degree calculation model is as follows:
wherein CS is i For the satellite capacity of the ith satellite communication system, i is more than or equal to 1 and less than or equal to M, CG i For the ground station capacity of the ith satellite communication system, CU i CS for subscriber station traffic of ith satellite communication system max CG being the maximum of the M satellite capacities max For the maximum of the M ground station capacities, CU max For the maximum of M subscriber station traffic,for the system capacity of the ith satellite communication system, < > j->
Optionally, the method for calculating the satellite effective utilization rate includes:
processing the M satellite communication systems by using a satellite effective utilization rate calculation model to obtain satellite effective utilization rates SR;
the satellite effective utilization rate calculation model is as follows:
wherein the M satellite communication systems share N satellites, TL n For the effective service life of the nth satellite in orbit, N is more than or equal to 1 and less than or equal to N, TL n ＝T3 n -(T2 n -T1 n )，T3 n For the service life of the nth satellite, T1 n T2 is the transmission time of the nth satellite n Is the small-scale test time of the nth satellite.
Optionally, the method for calculating the average connectivity of the network includes:
processing the satellite communication system by using a network average connectivity calculation model to obtain the network average connectivity Z;
the network average connectivity calculation model is as follows:
wherein, the liquid crystal display device comprises a liquid crystal display device,n is the number of nodes in the undirected communication graph G of the satellite communication system, G= (V, E), V= { V 1 ,v 2 ,…,v n The node set in the undirected connectivity graph G, v 1 ,v 2 ,…,v n Which represents a number of n nodes and,for edge set, add>Representing node v i And node v j L is more than or equal to 0 and less than or equal to m ij A direct link, m ij For node v i And node v j Number of direct links between d ij For node v i And node v j Communication betweenA degree;
by means of node v i And node v j The connectivity calculation model between the nodes is used for obtaining a node v i And node v j Degree of communication d between ij ；
The node v i And node v j The calculation model of the connectivity between the two is:
wherein the method comprises the steps ofk > 1 is node v i And node v j Indirect connectivity between them, k is hop count, < >>
Optionally, the method for calculating the network survivability includes:
s21, carrying out N times of attacks on the satellite communication system by utilizing a method of randomly attacking a network node;
And S22, calculating the average connectivity of the network of the satellite communication system after N times of attacks to obtain the network destructiveness ZL.
Optionally, the method for calculating the satellite coverage rate includes:
processing the satellite communication system by using a satellite coverage rate calculation model to obtain the satellite coverage rate SCA;
the satellite coverage rate calculation model is as follows:
wherein onceCR is a heavy coverage rate of the nth coverage area, N is more than or equal to 1 and less than or equal to N, N is the number of the coverage areas,TwicCr is the double coverage rate of the nth coverage area, thirdCR is the triple coverage rate of the nth coverage area, satCT is the normalized value of the coverage time of the nth coverage area, satCTI is the normalized value of the coverage interval of the nth coverage area, a is the weight of one double coverage rate, beta is the weight of the double coverage rate, gamma is the weight of the triple coverage rate, delta is the weight of the normalized value of the coverage time, epsilon is the weight of the normalized value of the coverage interval, a+beta+gamma+delta+epsilon=1,representing the relative importance of the different coverage areas, < +.>
Optionally, the method for calculating the access success rate includes:
processing the M satellite communication systems by using an access success rate calculation model to obtain the access success rate SucR;
The access success rate calculation model is as follows:
wherein, sucARN i ACCRN for the number of times the ith satellite communication system successfully allocates resources to a requesting user i The total number of the access requests of the ith satellite communication system is equal to or more than 1 and equal to or less than M.
Optionally, the calculating method of the service quality of service includes:
processing the M satellite communication systems by using a service quality calculation model to obtain the service quality QoS;
the business service quality calculation model is as follows:
wherein K is within a period of timeThe amount of traffic enjoying network service in satellite communication systems,the average end-to-end time delay of the kth service is 1.ltoreq.k.ltoreq.k +.>Delay jitter for the kth service; />For the packet loss rate of the kth service, α is an end-to-end delay weight, β is a delay jitter weight, γ is a packet loss rate weight, and α+β+γ=1.
Optionally, the processing the performance evaluation index set of the satellite communication system to obtain a performance evaluation result of the satellite communication system includes:
processing the system construction degree, the network connection degree and the application support degree by using a satellite communication system efficiency evaluation model to obtain a satellite communication system efficiency evaluation result CE;
The satellite communication system efficiency evaluation model is as follows:
wherein alpha is the weight of the system construction degree, beta is the weight of the network connectivity degree, gamma is the weight of the application support degree, alpha 1 Matching degree for the system capacityWeights, alpha 2 Weighting the satellite effective usage SR, beta 1 Weighting the average connectivity Z of the network, beta 2 Gamma is the weight of the network survivability ZL 1 For the weight of the satellite coverage SCA, γ 2 Gamma is the weight of the access success rate SucR 3 α+β+γ=1, α being a weight of the quality of service QoS 1 +α 2 ＝1，β 1 +β 2 ＝1，γ 1 +γ 2 +γ 3 ＝1。
The apparatus embodiments described above are merely illustrative, in which the modules illustrated as separate components may or may not be physically separate, and the components shown as modules may or may not be physical, i.e., may be located in one place, or may be distributed over multiple network modules. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art will understand and implement the present invention without undue burden.
From the above detailed description of the embodiments, it will be apparent to those skilled in the art that the embodiments may be implemented by means of software plus necessary general hardware platforms, or of course by means of hardware. Based on such understanding, the foregoing technical solutions may be embodied essentially or in part in the form of a software product that may be stored in a computer-readable storage medium including Read-Only Memory (ROM), random-access Memory (Random Access Memory, RAM), programmable Read-Only Memory (Programmable Read-Only Memory, PROM), erasable programmable Read-Only Memory (Erasable Programmable Read Only Memory, EPROM), one-time programmable Read-Only Memory (OTPROM), electrically erasable programmable Read-Only Memory (EEPROM), compact disc Read-Only Memory (Compact Disc Read-Only Memory, CD-ROM) or other optical disc Memory, magnetic disc Memory, tape Memory, or any other medium that can be used for computer-readable carrying or storing data.
Finally, it should be noted that: the disclosed method and apparatus for evaluating performance of a satellite communication system are only preferred embodiments of the present invention, and are only used for illustrating the technical scheme of the present invention, but not limiting the technical scheme; although the invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art will understand that; the technical scheme recorded in the various embodiments can be modified or part of technical features in the technical scheme can be replaced equivalently; such modifications and substitutions do not depart from the spirit and scope of the corresponding technical solutions.
Claims (3)
1. A method for evaluating performance of a satellite communication system, the method comprising:
s1, constructing a satellite communication system; the satellite communication system comprises M satellite communication systems;
s2, constructing a performance evaluation index set of the satellite communication system; the efficacy evaluation index set comprises a system construction degree, a network connection degree and an application support degree; the system construction degree comprises a system capacity matching degree and a satellite effective utilization rate; the network connectivity comprises network average connectivity and network survivability; the application support degree comprises satellite coverage rate, access success rate and service quality;
The calculation method of the system capacity matching degree comprises the following steps:
processing the M satellite communication systems by using a system capacity matching degree calculation model to obtain the system capacity matching degree
The system capacity matching degree calculation model is as follows:
wherein CS is i For the satellite capacity of the ith satellite communication system, i is more than or equal to 1 and less than or equal to M, CG i For the ground station capacity of the ith satellite communication system, CU i CS for subscriber station traffic of ith satellite communication system max CG being the maximum of the M satellite capacities max For the maximum of the M ground station capacities, CU max For the maximum of M subscriber station traffic,for the system capacity of the ith satellite communication system, < > j->
The method for calculating the effective utilization rate of the satellite comprises the following steps:
processing the M satellite communication systems by using a satellite effective utilization rate calculation model to obtain satellite effective utilization rates SR;
the satellite effective utilization rate calculation model is as follows:
wherein the M satellite communication systems share N satellites, TL n For the effective service life of the nth satellite in orbit, N is more than or equal to 1 and less than or equal to N, TL n ＝T3 n -(T2 n -T1 n )，T3 n For the service life of the nth satellite, T1 n T2 is the transmission time of the nth satellite n The small-scale test time of the nth satellite;
the calculation method of the average connectivity of the network comprises the following steps:
Processing the satellite communication system by using a network average connectivity calculation model to obtain the network average connectivity Z;
the network average connectivity calculation model is as follows:
wherein, the liquid crystal display device comprises a liquid crystal display device,n is a node in the undirected communication graph G of the satellite communication systemNumber, g= (V, E), v= { V 1 ,v 2 ,…,v n The node set in the undirected connectivity graph G, v 1 ,v 2 ,…,v n Representing n nodes, ++>For edge set, add>Representing node v i And node v j L is more than or equal to 0 and less than or equal to m ij A direct link, m ij For node v i And node v j Number of direct links between d ij For node v i And node v j The degree of communication between the two;
by means of node v i And node v j The connectivity calculation model between the nodes is used for obtaining a node v i And node v j Degree of communication d between ij ；
The node v i And node v j The calculation model of the connectivity between the two is:
wherein the method comprises the steps ofFor node v i And node v j Indirect connectivity between them, k is hop count, < >>
The method for calculating the network survivability comprises the following steps:
carrying out N times of attacks on the satellite communication system by utilizing a method of randomly attacking a network node;
calculating the average connectivity of the network of the satellite communication system after N times of attacks to obtain the network destruction resistance ZL;
the satellite coverage rate calculating method comprises the following steps:
processing the satellite communication system by using a satellite coverage rate calculation model to obtain the satellite coverage rate SCA;
The satellite coverage rate calculation model is as follows:
wherein onceCR is a heavy coverage rate of an nth coverage area, N is more than or equal to 1 and less than or equal to N, N is the number of coverage areas, twicCR is a double coverage rate of the nth coverage area, thirdCR is a triple coverage rate of the nth coverage area, satCT is a normalized value of a coverage time of the nth coverage area, satCTI is a normalized value of a coverage interval of the nth coverage area, a is a weight of a heavy coverage rate, beta is a weight of a double coverage rate, gamma is a weight of a triple coverage rate, delta is a weight of a normalized value of a coverage time, epsilon is a weight of a normalized value of a coverage interval, a+beta+gamma+delta+epsilon=1,representing the relative importance of the different coverage areas, < +.>
The method for calculating the success rate of the access comprises the following steps:
processing the M satellite communication systems by using an access success rate calculation model to obtain the access success rate SucR;
the access success rate calculation model is as follows:
wherein, sucARN i ACCRN for the number of times the ith satellite communication system successfully allocates resources to a requesting user i The total number of the access requests of the ith satellite communication system is equal to or more than 1 and equal to or less than M;
the calculating method of the business service quality comprises the following steps:
processing the M satellite communication systems by using a service quality calculation model to obtain the service quality QoS;
The business service quality calculation model is as follows:
wherein K is the number of services enjoying network service in the satellite communication system within a period of time,the average end-to-end time delay of the kth service is 1.ltoreq.k.ltoreq.k +.>Delay jitter for the kth service; />The packet loss rate of the kth service is alpha, the end-to-end delay weight, beta, the delay jitter weight, gamma, the packet loss rate weight, and alpha+beta+gamma=1;
and S3, processing the performance evaluation index set of the satellite communication system to obtain a performance evaluation result of the satellite communication system.
2. The method for evaluating the performance of a satellite communication system according to claim 1, wherein the processing the set of performance evaluation indexes of the satellite communication system to obtain the performance evaluation result of the satellite communication system comprises:
processing the system construction degree, the network connection degree and the application support degree by using a satellite communication system efficiency evaluation model to obtain a satellite communication system efficiency evaluation result CE;
the satellite communication system efficiency evaluation model is as follows:
wherein alpha is the weight of the system construction degree, beta is the weight of the network connectivity degree, gamma is the weight of the application support degree, alpha 1 Matching degree for the system capacityWeights, alpha 2 Weighting the satellite effective usage SR, beta 1 Weighting the average connectivity Z of the network, beta 2 Gamma is the weight of the network survivability ZL 1 For the weight of the satellite coverage SCA, γ 2 Gamma is the weight of the access success rate SucR 3 α+β+γ=1, α being a weight of the quality of service QoS 1 +α 2 ＝1，β 1 +β 2 ＝1，γ 1 +γ 2 +γ 3 ＝1。
3. A satellite communication system performance assessment apparatus, the apparatus comprising:
the satellite communication system construction module is used for constructing a satellite communication system; the satellite communication system comprises M satellite communication systems;
the index system construction module is used for constructing a performance evaluation index set of the satellite communication system; the efficacy evaluation index set comprises a system construction degree, a network connection degree and an application support degree; the system construction degree comprises a system capacity matching degree and a satellite effective utilization rate; the network connectivity comprises network average connectivity and network survivability; the application support degree comprises satellite coverage rate, access success rate and service quality;
the calculation method of the system capacity matching degree comprises the following steps:
processing the M satellite communication systems by using a system capacity matching degree calculation model to obtain the system capacity matching degree
The system capacity matching degree calculation model is as follows:
wherein CS is i For the satellite capacity of the ith satellite communication system, i is more than or equal to 1 and less than or equal to M, CG i For the ground station capacity of the ith satellite communication system, CU i CS for subscriber station traffic of ith satellite communication system max CG being the maximum of the M satellite capacities max For the maximum of the M ground station capacities, CU max For the maximum of M subscriber station traffic,for the system capacity of the ith satellite communication system, < > j->
The method for calculating the effective utilization rate of the satellite comprises the following steps:
processing the M satellite communication systems by using a satellite effective utilization rate calculation model to obtain satellite effective utilization rates SR;
the satellite effective utilization rate calculation model is as follows:
wherein the M satellite communication systems share N satellites, TL n For the effective service life of the nth satellite in orbit, N is more than or equal to 1 and less than or equal to N, TL n ＝T3 n -(T2 n -T1 n )，T3 n For the service life of the nth satellite, T1 n T2 is the transmission time of the nth satellite n The small-scale test time of the nth satellite;
the calculation method of the average connectivity of the network comprises the following steps:
processing the satellite communication system by using a network average connectivity calculation model to obtain the network average connectivity Z;
the network average connectivity calculation model is as follows:
Wherein, the liquid crystal display device comprises a liquid crystal display device,n is the number of nodes in the undirected communication graph G of the satellite communication system, G= (V, E), V= { V 1 ,v 2 ,…,v n The node set in the undirected connectivity graph G, v 1 ,v 2 ,…,v n Representing n nodes, ++>For edge set, add>Representing node v i And node v j L is more than or equal to 0 and less than or equal to m ij A direct link, m ij For node v i And node v j Number of direct links between d ij For node v i And node v j The degree of communication between the two;
by means of node v i And node v j The connectivity calculation model between the nodes is used for obtaining a node v i And node v j Degree of communication d between ij ；
The node v i And node v j The calculation model of the connectivity between the two is:
wherein the method comprises the steps ofFor node v i And node v j Indirect connectivity between them, k is hop count, < >>
The method for calculating the network survivability comprises the following steps:
carrying out N times of attacks on the satellite communication system by utilizing a method of randomly attacking a network node;
calculating the average connectivity of the network of the satellite communication system after N times of attacks to obtain the network destruction resistance ZL;
the satellite coverage rate calculating method comprises the following steps:
processing the satellite communication system by using a satellite coverage rate calculation model to obtain the satellite coverage rate SCA;
the satellite coverage rate calculation model is as follows:
wherein onceCR is a re-coverage rate of the nth coverage area, N is not less than 1 and not more than N, N is the number of coverage areas, twicCR is a re-coverage rate of the nth coverage area, thirdCR is a triple coverage rate of the nth coverage area, satCT is a normalized value of coverage time of the nth coverage area, satCTI is a normalized value of coverage interval of the nth coverage area, a is a weight of re-coverage rate, beta is a weight of re-coverage rate, and gamma is a weight of triple coverage rate Delta is the weight of the normalized value of the overlay time, epsilon is the weight of the normalized value of the overlay interval, a + beta + gamma + delta + epsilon = 1,representing the relative importance of the different coverage areas, < +.>
The method for calculating the success rate of the access comprises the following steps:
processing the M satellite communication systems by using an access success rate calculation model to obtain the access success rate SucR;
the access success rate calculation model is as follows:
wherein, sucARN i ACCRN for the number of times the ith satellite communication system successfully allocates resources to a requesting user i The total number of the access requests of the ith satellite communication system is equal to or more than 1 and equal to or less than M;
the calculating method of the business service quality comprises the following steps:
processing the M satellite communication systems by using a service quality calculation model to obtain the service quality QoS;
the business service quality calculation model is as follows:
wherein K is the number of services enjoying network service in the satellite communication system within a period of time,the average end-to-end time delay of the kth service is 1.ltoreq.k.ltoreq.k +.>Delay jitter for the kth service; />The packet loss rate of the kth service is alpha, the end-to-end delay weight, beta, the delay jitter weight, gamma, the packet loss rate weight, and alpha+beta+gamma=1;
And the efficiency evaluation module is used for processing the efficiency evaluation index set of the satellite communication system to obtain a satellite communication system efficiency evaluation result.
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