A reliable long-distance satellite communication method and communication system

Abstract

The present invention provides a reliable remote communication method and a communication system. The provided method comprises: constructing a satellite communication network including relay communication nodes; constructing a communication link and a verification communication node between the relay communication nodes; constructing a verification link between the relay communication node and the verification communication node; obtaining a first Rayleigh distribution and a first Poisson distribution when a satellite communication device communicates via relay; sending a direct signal with the same amplitude distribution as that in the first Rayleigh distribution to a satellite system, and the satellite system returns the received direct signal to the verification communication node for backup; sending an analog signal to the verification node via the verification link to obtain a decay of the verification signal; looping to obtain an Nth Rayleigh distribution and an Nth Poisson distribution; determining a theoretical Poisson distribution of a satellite device in response to an arbitrary communication node; determining a problematic relay communication node and a problematic communication link by an error between a data response and a theoretical value, so as to diagnose an erroneous node in the satellite communication network.

Description

Technical Field

[0001] The invention belongs to the technical field of satellite communications, and in particular relates to a reliable long-distance satellite communication method and a communication system. Background Art

[0002] Satellite communications were originally used for military purposes. With the development of science and technology, they have gradually developed into dual-use for military and civilian purposes. With the successful test of large-bandwidth and high-throughput satellites, the services that satellite communications can provide are becoming more and more diverse. As a new strategic industry of the country, satellite communications have achieved rapid development in recent years.

[0003] Satellite communications usually include satellite equipment and ground receiving terminals. Satellite communications include direct communications, i.e., satellite and ground equipment exchange data directly without relaying, or relay communications, i.e., satellite and ground equipment exchange data after being relayed by another device. For relay communications, the stability of the ground communication link assumed in advance is required to be high.

[0004] In view of this, it is urgent to propose a reliable long-distance satellite communication method and communication system. Summary of the invention

[0005] The present invention provides a reliable long-distance satellite communication method and system, which encrypts and backs up data in the satellite communication process, and judges the stability and error of the satellite communication system by checking the signal decay during the communication process and checking the nodes that obtain the data on average, determines the error between the nodes through relay communication and diagnoses the system to improve reliability.

[0006] A first aspect of the present invention provides a reliable long-distance satellite communication method, comprising the following steps:

[0007] S1. Build a satellite communication network based on satellite systems and satellite communication equipment.

[0008] The satellite communication network includes relay communication nodes, each of which backs up communication data exchanged and encrypted by the satellite communication equipment;

[0009] S2, constructing communication links between the plurality of relay communication nodes, and simultaneously constructing a verification communication node in each communication link;

[0010] S3, constructing a verification link between the relay communication node and the verification communication node, wherein the verification link is a simulated link of a direct channel between the relay communication node and the satellite system;

[0011] S4, the relay communication node obtains a first Rayleigh distribution and a first Poisson distribution when the satellite communication device communicates via relay;

[0012] The first Rayleigh distribution is a non-direct distribution of signal attenuation;

[0013] The first Poisson distribution is the reception probability distribution of each amplitude signal tested by direct radiation within a preset time period;

[0014] Using the first Rayleigh distribution and the first Poisson distribution as key parameters to encrypt the communication data of the satellite communication device and then back it up;

[0015] S5, the relay communication node sends a direct signal having the same amplitude distribution as the first Rayleigh distribution to the satellite system, and the satellite system returns the received direct signal to the verification communication node for backup;

[0016] S6, the relay communication node sends a simulation signal to the verification node via the verification link to obtain a decay of the verification signal;

[0017] S7, looping through S4-S6 until the Nth Rayleigh distribution and the Nth Poisson distribution are obtained, where N is the number of relay communication nodes, and N≥2;

[0018] S8. Determine, based on the first Poisson distribution to the Nth Poisson distribution, a theoretical Poisson distribution of the satellite communication device's signal response to any of the communication nodes at a preset time;

[0019] S9. When any relay communication node is responded to by communication, determine whether the obtained Poisson distribution is within the first threshold interval and whether the Rayleigh distribution is within the second threshold interval. If any condition is no, determine the problematic relay communication node and the problematic communication link.

[0020] Further, the verification communication node is set to:

[0021] obtained by marking by one of the relay communication nodes to another relay communication node at a preset position of the communication link to which the relay communication node is connected, or

[0022] Simulate a node.

[0023] Furthermore, if the satellite communication device performs relay communication to more than one relay communication node, the following steps are also performed:

[0024] Setting a verification communication node between the two relay communication nodes to form a first sub-link and a second sub-link between the verification communication node and the two relay communication nodes;

[0025] The simulated decay ratio of the first sub-link and the second sub-link is equal to the theoretical decay ratio when the two relay communication nodes are directed toward the satellite system;

[0026] The simulated communication time ratio of the first sub-link and the second sub-link is equal to the theoretical communication time ratio when the two relay communication nodes are directly radiating to the satellite system.

[0027] If the satellite communication device performs relay communication to more than one relay communication node and the two relay communication nodes are not adjacent, the following steps are further performed:

[0028] Obtaining the longest communication link and the shortest communication link when the two relay communication nodes communicate;

[0029] Calculating Rayleigh distribution of signal decay in the longest communication link and the shortest communication link;

[0030] forming a third sub-link and a fourth sub-link between the verification communication node and the two relay communication nodes;

[0031] The simulated decay ratios of the third sub-link and the fourth sub-link are equal to the theoretical decay ratios when they are directly irradiated to the satellite system after communicating via the longest communication link and the shortest communication link respectively;

[0032] The simulated communication time ratio of the third sub-link and the fourth sub-link is equal to the theoretical communication time ratio when the communication is directly directed to the satellite system via the longest communication link and the shortest communication link respectively;

[0033] and obtaining a second Poisson distribution in which one of the satellite communication devices responds to the two relay communication nodes in the theoretical Poisson distribution, wherein the second Poisson distribution is a probability distribution of one of the satellite communication devices communicating via one of the relay communication nodes;

[0034] According to the second Poisson distribution, obtaining a theoretical probability ratio between the longest communication link and the shortest communication link;

[0035] The theoretical decay ratio and the theoretical communication duration ratio are adjusted according to the theoretical probability ratio.

[0036] Furthermore, the verification communication node is arranged on the verification link, the communication duration of each verification link is the same and the sum of the communication durations of adjacent sub-links connected to the verification communication node is equal to the communication duration of the verification link.

[0037] Furthermore, the first threshold interval is determined by the following steps:

[0038] After a random satellite communication device transmits a signal to a relay communication node,

[0039] Obtaining verification of a communication link from the relay communication node to another relay communication node, wherein the communication link includes a link from the satellite to the relay communication node via a new device;

[0040] Obtaining a first error for verifying link transmission and communication link, wherein the first error is a first threshold interval;

[0041] The second threshold interval is determined by the following steps:

[0042] After a random satellite communication device transmits a signal to a relay communication node,

[0043] After obtaining the multipath propagation of the relay communication node, the other relay communication nodes receive a first probability distribution interval of signals in a preset time period and a second probability distribution interval of signals with different amplitudes;

[0044] The first probability distribution interval and the second probability distribution interval are second threshold intervals.

[0045] The second aspect of the present invention provides a reliable long-distance satellite communication system, including a memory, a processor and a computer program stored in the memory and executable on the processor. When the processor executes the program, it is suitable for implementing the reliable long-distance satellite communication method provided by the first aspect of the present invention.

[0046] The third aspect of the present invention provides a storage medium having a computer program stored thereon, which, when executed by a processor, is suitable for implementing the reliable long-distance satellite communication method provided by the first aspect of the present invention. The above technical solution of the present invention has the following advantages over the prior art:

[0047] The present invention takes into account the interference of external factors on the communication link during relay transmission, simulates the direct radiation situation and makes random judgments on the signal position and relay path during the Rayleigh distribution and non-targeted signal relay in the communication process. In the random signal transmission, after the signal is transmitted by the random satellite communication device, the signal attenuation amount and the amount of the signal reaching any relay communication node can be determined by the Rayleigh distribution and the Poisson distribution. The first threshold interval and the second threshold interval can be used to determine whether there is an error in the path between the first relay communication node when the random satellite communication device communicates via relay communication. The error between the communication link and the verification link after the satellite return signal can be determined according to the first threshold interval. During the simulation process, since the setting and state of the verification link are basically the same as those of the satellite return signal, the part with error in the communication link can be determined. Then, according to the second threshold interval, it can be determined whether there is an error between the paths of other relay communication nodes (correspondingly, it can also be obtained whether there is a problem in other relay communication nodes). Therefore, the problem relay communication node and the problem communication link can be determined. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 It is a schematic diagram of a satellite communication network provided by an embodiment of the present invention.

[0049] Figure 2 It is a communication diagram of a verification communication node and its adjacent sub-links provided by an embodiment of the present invention.

[0050] Figure 3 It is a communication diagram of verifying a communication node and its adjacent sub-links when relay communication nodes are not adjacent to each other provided by an embodiment of the present invention.

[0051] Figure 4 It is a schematic diagram of an electronic device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0052] In order to be able to understand the features and technical contents of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure is described in detail below in conjunction with the accompanying drawings. The attached drawings are for reference only and are not used to limit the embodiments of the present disclosure. In the following technical description, for the convenience of explanation, a full understanding of the disclosed embodiments is provided through multiple details. However, one or more embodiments can still be implemented without these details. In other cases, to simplify the drawings, well-known structures and devices can be simplified for display. Embodiment 1

[0053] The present disclosure provides a reliable long-distance satellite communication method, comprising the following steps:

[0054] S1. Build a satellite communication network based on satellite systems and satellite communication equipment.

[0055] like Figure 1 As shown, the satellite communication network includes relay communication nodes, and each of the relay communication nodes backs up the communication data exchanged and encrypted by the satellite communication equipment.

[0056] Specifically, in the embodiment of the present disclosure, the satellite communication network includes a satellite system, a relay communication node and a satellite communication device. The number of the relay communication nodes is set to N and N ≥ 2. For simplicity, the appendix of the embodiment of the present disclosure is Figure 1 Only the first relay communication node, the second relay communication node and the Nth relay communication node are shown.

[0057] S2. Construct communication links between the plurality of relay communication nodes, and simultaneously construct a verification communication node in each communication link.

[0058] S3. Construct a verification link between the relay communication node and the verification communication node, wherein the verification link is a simulated link of the direct channel between the relay communication node and the satellite system. Specifically, in this field, the signal propagated through the channel includes not only the attenuation value of the direct signal, but also the attenuation of the indirect signal. The relay communication node is set in an area with a relatively high altitude or position and no obstructions. Therefore, when the relay communication node communicates with the satellite system, it generally communicates directly. Since the position of the satellite communication device itself is unknown, it randomly initiates channel transmission to the relay communication node and then relays the communication to the satellite system through the relay communication node. In the embodiment of the present disclosure, the purpose of setting the verification link is to verify the communication status of the direct channel between the relay communication node and the satellite system. The simulated link in the embodiment of the present disclosure has the same direct signal attenuation as that of the relay communication node when transmitting from a relay communication node to the corresponding verification communication node.

[0059] S4, the relay communication node obtains a first Rayleigh distribution and a first Poisson distribution when the satellite communication device communicates via relay;

[0060] The first Rayleigh distribution is a non-direct distribution of signal attenuation;

[0061] The first Poisson distribution is the reception probability distribution of each amplitude signal tested by direct radiation within a preset time period;

[0062] The communication data of the satellite communication device is encrypted using the first Rayleigh distribution and the first Poisson distribution as key parameters and then backed up. As a specific implementation method, the first Rayleigh distribution and the first Poisson distribution are used as key parameters for encryption, and the modulus of the entire amplitude in the Rayleigh distribution and the probability in the first Poisson distribution are adaptively taken as keys to encrypt using an encryption algorithm. Since the signal strength and signal transmission position of a satellite communication device are different, and the time-varying and other interferences during transmission are different, the first Rayleigh distribution and the first Poisson distribution of the signal also have sufficient encryption strength when used as keys. For example, the key parameter is set to an array formed by (amplitude modulus, probability), or other arrays formed by parameters of the two are adaptively used as keys to ensure the security of signal backup. The encryption algorithm used in the embodiment of the present disclosure can be a SHA algorithm or other algorithms commonly used in the art.

[0063] In accordance with the S3 record, as a preferred method of the embodiment of the present disclosure, the verification communication node is set by marking another relay communication node at a preset position of the communication link connected to it by one of the relay communication nodes. It should be noted that in the setting method of using another relay communication node as the verification communication node, since there is a multipath channel (including a direct channel) between the two relay communication nodes, it is necessary to consider the decay of the non-direct channel, and introduce the decay of the non-direct channel as a predetermined error value into the verification communication, that is, the original signal to be verified transmitted through the multipath channel is transmitted after the non-direct error is introduced. In a specific implementation method, the non-direct non-direct error channel is first transmitted to the verification communication node to obtain the non-direct decay and obtain the corresponding Rayleigh distribution, and then the non-direct error channel and the original signal to be verified are transmitted according to the verification link, and the direct attenuation of the analog link is determined after processing the noise of the signals of different amplitudes according to the Rayleigh distribution of the non-direct error, and then the noise is gradually added to the signal to obtain the direct decay of the analog link close to the direct decay corresponding to the S3 record.

[0064] As another preferred method of the embodiment of the present disclosure adapted to S3, the configuration mode of the verification communication node is a simulation node.

[0065] In the embodiment of the present disclosure, the simulation node is set as a virtual communication node. In one setting mode, it is set as a physical simulation node to construct a simulation link as provided in S3 of the embodiment of the present disclosure, and the simulation link is a real channel. The corresponding interference noise is set in the channel so that the signal attenuation value of the signal passing through the simulation link adapts to the Rayleigh distribution in S4. It should be noted that when it is set as a real channel, it has a time-varying decay such as the Rayleigh distribution, but it is different from the method of setting after marking another relay communication node recorded in the embodiment of the present disclosure. In this setting mode, there is no decay of non-direct error and only direct decay needs to be considered.

[0066] In another setting mode, the analog link is also set as an analog channel. In this setting mode, the decay of non-setting errors is not considered, and the direct decay and the communication time of the analog link are both simulation parameters.

[0067] As a preferred embodiment of the present disclosure, if the satellite communication device performs relay communication to more than one relay communication node, such as Figure 2 As shown, the following steps are also performed:

[0068] Setting a verification communication node between the two relay communication nodes to form a first sub-link and a second sub-link between the verification communication node and the two relay communication nodes;

[0069] The simulated decay ratio of the first sub-link and the second sub-link is equal to the theoretical decay ratio when the two relay communication nodes are directed toward the satellite system;

[0070] The simulated communication time ratio of the first sub-link and the second sub-link is equal to the theoretical communication time ratio when the two relay communication nodes are directly radiating to the satellite system.

[0071] In the embodiment of the present disclosure, the setting of the verification communication node is to simulate the satellite system to save the actual time of verifying the communication. Since the position of the satellite is fixed relative to the position of the ground, and there is generally no interference that causes non-direct errors during the communication process, the signal transmission decay and state between the relay communication node and the satellite system are relatively stable. Therefore, the subsequent verification can be performed without the satellite system by setting up the verification communication node.

[0072] As a further preferred embodiment of the present disclosure, if the satellite communication device performs relay communication to more than one relay communication node and the two relay communication nodes are not adjacent, Figure 3 As shown, the following steps are also performed:

[0073] Obtaining the longest communication link and the shortest communication link when the two relay communication nodes communicate;

[0074] Calculating Rayleigh distribution of signal decay in the longest communication link and the shortest communication link;

[0075] forming a third sub-link and a fourth sub-link between the verification communication node and the two relay communication nodes;

[0076] The simulated decay ratios of the third sub-link and the fourth sub-link are equal to the theoretical decay ratios when they are directly irradiated to the satellite system after communicating via the longest communication link and the shortest communication link respectively;

[0077] The simulated communication time ratio of the third sub-link and the fourth sub-link is equal to the theoretical communication time ratio when the communication is directly directed to the satellite system via the longest communication link and the shortest communication link respectively;

[0078] and obtaining a second Poisson distribution in which one of the satellite communication devices responds to the two relay communication nodes in the theoretical Poisson distribution, wherein the second Poisson distribution is a probability distribution of one of the satellite communication devices communicating via one of the relay communication nodes;

[0079] According to the second Poisson distribution, obtaining a theoretical probability ratio between the longest communication link and the shortest communication link;

[0080] The theoretical decay ratio and the theoretical communication duration ratio are adjusted according to the theoretical probability ratio. Specifically, in the disclosed embodiment, if the number of relay communication nodes passed by a random satellite communication device exceeds 2, when it performs relay communication, the length of the communication link is unknown in a random state, so the longest communication path and the shortest communication path are obtained.

[0081] As a further preferred embodiment of the present disclosure, if the satellite communication device performs relay communication to more than one relay communication node and the two relay communication nodes are not adjacent, it also includes a traversal simulation, wherein the traversal simulation is to obtain all communication links between the two relay communication nodes, and according to the number of other relay communication nodes spaced between the two relay communication nodes, the theoretical decay ratio and the theoretical communication duration ratio of the third sub-link and the fourth sub-link are set in turn to the corresponding ratios when the communication links are divided by other relay communication nodes, and the theoretical decay and theoretical communication duration during the theoretical communication are traversally calculated.

[0082] Therefore, in the embodiment of the present disclosure, a complete simulation of the signal transmission process is implemented when a random satellite communication device performs relay communication to a random relay communication node, and the error value is determined based on the complete simulation situation. During the simulation process, the situation in which any relay communication node completely relays the signal to the satellite communication system after receiving the signal is considered.

[0083] In the embodiment of the present disclosure, the verification communication node and the verification link also have the following settings:

[0084] The verification communication node is set on the verification link, the communication duration of each verification link is the same, and the sum of the communication durations of adjacent sub-links connected to the verification communication node is equal to the communication duration of the verification communication link. The duration is set to no longer consider the error of signal transmission between the satellite system and the relay communication node when simulating the satellite system.

[0085] S5. The relay communication node sends a direct signal with the same amplitude distribution as the first Rayleigh distribution to the satellite system, and the satellite system returns the received direct signal to the verification node for backup.

[0086] S6. The relay communication node sends a simulated direct signal to the verification node via the verification link to obtain a decay of the verification signal.

[0087] S7, looping through steps S4 to S6 until the Nth Rayleigh distribution and the Nth Poisson distribution are obtained.

[0088] S8. Determine the theoretical Poisson distribution of the satellite communication device's signal response to any of the relay communication nodes at a preset time based on the first Poisson distribution to the Nth Poisson distribution.

[0089] S9. When any relay communication node is responded to by communication,

[0090] It is determined whether the obtained Poisson distribution is within a first threshold interval and whether the Rayleigh distribution is within a second threshold interval. If either condition is negative, the problematic relay communication node and the problematic communication link are determined.

[0091] As a preferred method of the embodiment of the present disclosure, adapted to S9,

[0092] The first threshold interval is determined by the following steps:

[0093] After a random satellite communication device transmits a signal to a relay communication node,

[0094] Obtaining a communication link for the relay communication node to transmit a signal to an adjacent relay communication node, wherein the communication link includes a path for the satellite communication device to transmit;

[0095] The relay communication node transmits the received signal after gaining the signal to the adjacent relay communication node for transmission,

[0096] Obtain an error interval between the data returned by the relay communication node after simulated link simulation, the data returned by the adjacent relay communication node after simulated link simulation and the data directly transmitted to the satellite system by both, and the error interval is a first threshold interval; it should be noted that the first threshold interval is the case when one relay communication node performs relay communication. If there are more than two relay communication nodes, it is necessary to adaptively simulate again the steps performed in the embodiment of the present disclosure when the satellite communication device performs relay communication to more than one relay communication node to obtain the error interval, and record and back up the different error intervals.

[0097] The second threshold interval is determined by the following steps:

[0098] After a random satellite communication device transmits a signal to a relay communication node,

[0099] After obtaining the multipath propagation of the relay communication node, the other relay communication nodes receive a first probability distribution interval of signals in a preset time period and a second probability distribution interval of signals of different amplitudes in the preset time period;

[0100] The first probability distribution interval and the second probability distribution interval are the second threshold interval. It should be noted that the first threshold interval and the second threshold interval are both determined when the satellite communication network in the embodiment of the present disclosure is in a steady state, and are used for signal transmission after calibration.

[0101] Specifically, in random signal transmission, after the signal is transmitted by a random satellite communication device, the signal attenuation amount and the amount of the signal reaching any relay communication node can be determined by Rayleigh distribution and Poisson distribution. The above-mentioned first threshold interval and the above-mentioned second threshold interval can be used to determine whether there is an error in the path between the first relay communication node of the random satellite communication device during relay communication. The error between the communication link and the verification link after the satellite return signal can be determined according to the first threshold interval. During the simulation process, since the settings and states of the verification link and the satellite return signal are basically the same, the part of the communication link with errors can be determined. Then, according to the second threshold interval, it can be determined whether there are errors between the paths of other relay communication nodes (correspondingly, it can also be obtained whether there are problems in other relay communication nodes), so the problem relay communication node and the problem communication link can be determined.

[0102] Embodiment 2

[0103] Combination Figure 4 As shown, the embodiment of the present disclosure provides a reliable long-distance satellite communication method and a communication system, including a processor (processor) 30 and a memory (memory) 31.

[0104] Optionally, the device may further include a communication interface (CommunicationInterface) 32 and a bus 33. The processor 30, the communication interface 32, and the memory 31 may communicate with each other through the bus 33. The communication interface 32 may be used for information transmission. The processor 30 may call the logic instructions in the memory 31 to execute the reliable remote satellite communication method of the above embodiment.

[0105] An embodiment of the present disclosure provides a storage medium storing computer executable instructions, wherein the computer executable instructions are configured to execute the above-mentioned reliable long-distance satellite communication method.

[0106] The above-mentioned storage medium may be a transient computer-readable storage medium or a non-transient computer-readable storage medium. Non-transient storage media include: USB flash drives, mobile hard disks, read-only memories (ROMs), random access memories (RAMs), magnetic disks or optical disks, and other media that can store program codes, which may also be transient storage media.

[0107] The above description and the accompanying drawings fully illustrate the embodiments of the present disclosure so that those skilled in the art can practice them. Other embodiments may include structural, logical, electrical, process and other changes. The embodiments represent only possible changes. Unless explicitly required, separate components and functions are optional, and the order of operations may vary. Parts and features of some embodiments may be included in or replace parts and features of other embodiments. Moreover, the words used in this application are only used to describe the embodiments and are not used to limit the claims. As used in the description of the embodiments and the claims, unless the context clearly indicates, the singular forms of "a", "an" and "the" are intended to include plural forms as well. Similarly, the term "and / or" as used in this application refers to any and all possible combinations of one or more associated listings. In addition, when used in this application, the term "comprise" and its variants "comprises" and / or comprising refer to the presence of stated features, wholes, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or groups thereof. In the absence of further restrictions, the elements defined by the sentence "including one..." do not exclude the presence of other identical elements in the process, method or device including the elements. In this article, each embodiment may focus on the differences from other embodiments, and the same and similar parts between the embodiments may refer to each other. For the methods, products, etc. disclosed in the embodiments, if they correspond to the method part disclosed in the embodiments, then the relevant parts can refer to the description of the method part.

Claims

1. A reliable long-distance satellite communication method, characterized in that: The steps include: S1. Build a satellite communication network based on satellite systems and satellite communication equipment. The satellite communication network includes relay communication nodes, each of which backs up communication data exchanged and encrypted by the satellite communication equipment; S2, constructing communication links between the plurality of relay communication nodes, and simultaneously constructing a verification communication node in each communication link; S3, constructing a verification link between the relay communication node and the verification communication node, wherein the verification link is a simulated link of a direct channel between the relay communication node and the satellite system; S4, the relay communication node obtains a first Rayleigh distribution and a first Poisson distribution when the satellite communication device communicates via relay; The first Rayleigh distribution is a non-direct distribution of signal attenuation; The first Poisson distribution is the reception probability distribution of each amplitude signal tested by direct radiation within a preset time period; Using the first Rayleigh distribution and the first Poisson distribution as key parameters to encrypt the communication data of the satellite communication device and then back it up; S5, the relay communication node sends a direct signal having the same amplitude distribution as the first Rayleigh distribution to the satellite system, and the satellite system returns the received direct signal to the verification communication node for backup; S6, the relay communication node sends a simulation signal to the verification node via the verification link to obtain a decay of the verification signal; S7, looping through S4-S6 until the Nth Rayleigh distribution and the Nth Poisson distribution are obtained, where N is the number of relay communication nodes, and N≥2; S8. Determine, based on the first Poisson distribution to the Nth Poisson distribution, a theoretical Poisson distribution of the satellite communication device's signal response to any of the communication nodes at a preset time; S9, when any relay communication node is responded to by communication, determine whether the obtained Poisson distribution is within the first threshold interval and whether the Rayleigh distribution is within the second threshold interval, if any condition is no, determine the problematic relay communication node and the problematic communication link; The first threshold interval is determined by the following steps: After a random satellite communication device transmits a signal to a relay communication node, Obtaining verification of a communication link from the relay communication node to another relay communication node, wherein the communication link includes a link from the satellite communication device to the relay communication node; Obtaining a first error for verifying link transmission and communication link, wherein the first error is a first threshold interval; The second threshold interval is determined by the following steps: After a random satellite communication device transmits a signal to a relay communication node, After obtaining the multipath propagation of the relay communication node, the other relay communication nodes receive a first probability distribution interval of signals in a preset time period and a second probability distribution interval of signals with different amplitudes; The first probability distribution interval and the second probability distribution interval are second threshold intervals.

2. The reliable long-distance satellite communication method according to claim 1, characterized in that: The verification communication node is set to: It is obtained by marking another relay communication node at a preset position of a communication link connected to it by one of the relay communication nodes, or a simulated node.

3. The reliable long-distance satellite communication method according to claim 1, characterized in that: If the satellite communication device performs relay communication to more than one relay communication node, the following steps are further performed: Setting a verification communication node between the two relay communication nodes to form a first sub-link and a second sub-link between the verification communication node and the two relay communication nodes; The simulated decay ratio of the first sub-link and the second sub-link is equal to the theoretical decay ratio when the two relay communication nodes are directed toward the satellite system; The simulated communication time ratio of the first sub-link and the second sub-link is equal to the theoretical communication time ratio when the two relay communication nodes are directly radiating to the satellite system.

4. The reliable long-distance satellite communication method according to claim 3, characterized in that: If the satellite communication device performs relay communication to more than one relay communication node and the two relay communication nodes are not adjacent, the following steps are further performed: Obtaining the longest communication link and the shortest communication link when the two relay communication nodes communicate; Calculating Rayleigh distribution of signal decay in the longest communication link and the shortest communication link; forming a third sub-link and a fourth sub-link between the verification communication node and the two relay communication nodes; The simulated decay ratios of the third sub-link and the fourth sub-link are equal to the theoretical decay ratios when they are directly irradiated to the satellite system after communicating via the longest communication link and the shortest communication link respectively; The simulated communication time ratio of the third sub-link and the fourth sub-link is equal to the theoretical communication time ratio when the communication is directly directed to the satellite system via the longest communication link and the shortest communication link respectively; and obtaining a second Poisson distribution in which one of the satellite communication devices responds to the two relay communication nodes in the theoretical Poisson distribution, wherein the second Poisson distribution is a probability distribution of one of the satellite communication devices communicating via one of the relay communication nodes; According to the second Poisson distribution, obtaining a theoretical probability ratio between the longest communication link and the shortest communication link; The theoretical decay ratio and the theoretical communication duration ratio are adjusted according to the theoretical probability ratio.

5. The reliable long-distance satellite communication method according to claim 4, characterized in that: The verification communication node is arranged on the verification link, the communication duration of each verification link is the same, and the sum of the communication durations of adjacent sub-links connected to the verification communication node is equal to the communication duration of the verification link.

6. A reliable satellite communication system, characterized in that: The invention comprises a memory, a processor and a computer program stored in the memory and executable on the processor. When the processor executes the program, the reliable long-distance satellite communication method as claimed in any one of claims 1 to 5 is implemented.

7. A storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, it is suitable for implementing the reliable long-distance satellite communication method as described in any one of claims 1-5.

Images