CN109889229B - Satellite communication anti-interference method and device based on satellite-ground handshake - Google Patents
Satellite communication anti-interference method and device based on satellite-ground handshake Download PDFInfo
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Abstract
The embodiment of the invention provides a satellite communication anti-interference method and a satellite communication anti-interference device based on satellite-to-ground handshake, wherein the method comprises the following steps: if a first request frame is received, sending a first response frame containing target spread spectrum code identification information, wherein the target spread spectrum code is a spread spectrum code which is selected from a prestored spread spectrum code table according to the acquired interference spectrum information and corresponds to the interference spectrum information; if a second request frame for performing spread spectrum modulation according to a spread spectrum code is received, and the spread spectrum code of the second request frame is consistent with the target spread spectrum code, sending a second response frame for confirming the target spread spectrum code; and receiving the information frame modulated according to the target spreading code. According to the satellite communication anti-interference method based on satellite-ground handshake provided by the embodiment of the invention, the spread spectrum code table is maintained by the satellite terminal and the ground terminal together, and the corresponding target spread spectrum code is selected for communication according to the interference spectrum information, so that better anti-interference capability is achieved, and external interference such as non-cooperative interference can be effectively resisted.
Description
Technical Field
The embodiment of the invention relates to the field of wireless communication, in particular to a satellite communication anti-interference method and device based on satellite-ground handshake.
Background
As society has gradually advanced into the information technology era, information has become the most irreplaceable part of human society. In the information age, people increasingly rely on wireless communication, but wireless signals are easily interfered by various nature or man-made factors and cannot be normally used. Therefore, it is necessary to introduce an interference suppression method to improve the interference rejection capability of the wireless communication system.
The spread spectrum communication technology is an anti-interference technology with the characteristics of strong anti-interference capability, multipath effect resistance and the like. The frequency hopping communication system is a communication system in which carrier frequencies hop continuously in a certain range according to a frequency hopping pattern, and signals are modulated and transmitted according to the carrier frequencies. The communication mode greatly widens the whole working frequency band, improves the anti-interference and anti-fading capability of the communication system, and is widely applied to the fields of military and civil communication. Multicarrier modulation techniques are widely used in various communication standards because they can effectively combat multipath effects in wireless channels. The idea is to use several sub-carriers, each sub-carrier corresponding to a specific sub-channel, to transmit each sub-data stream in parallel. The existing multi-carrier modulation modes mainly comprise multi-tone realization, orthogonal multi-carrier modulation and multi-carrier modulation based on wavelet transformation.
However, the conventional multi-hop system and multi-carrier system may encounter non-cooperative interference in application scenarios such as satellite-to-ground transmission, which may seriously affect signal transmission.
Disclosure of Invention
In order to solve the above problem, embodiments of the present invention provide a satellite communication anti-interference method and apparatus based on satellite-to-ground handshake.
In a first aspect, the present invention provides a satellite communication anti-interference method based on satellite-to-ground handshake, including: if a first request frame is received, sending a first response frame containing target spread spectrum code identification information, wherein the target spread spectrum code is a spread spectrum code which is selected from a prestored spread spectrum code table according to the acquired interference spectrum information and corresponds to the interference spectrum information; if a second request frame for performing spread spectrum modulation according to a spread spectrum code is received, and the spread spectrum code of the second request frame is consistent with the target spread spectrum code, sending a second response frame for confirming the target spread spectrum code; and receiving the information frame modulated according to the target spread spectrum code.
In a second aspect, the invention provides a satellite communication anti-interference method based on satellite-to-ground handshake, which includes: transmitting a first request frame; if a first response frame containing target spread spectrum code identification information is received, sending a second request frame modulated according to the target spread spectrum code, wherein the target spread spectrum code is a spread spectrum code which is selected by a satellite terminal from a prestored spread spectrum code table according to acquired interference spectrum information and corresponds to the interference spectrum information; and if a second response frame for confirming the spreading code is received, sending an information frame modulated according to the target spreading code.
In a third aspect, the present invention provides a satellite communication anti-interference apparatus based on satellite-to-ground handshake, including: a selecting module, configured to send a first response frame including identification information of a target spreading code if a first request frame is received, where the target spreading code is a spreading code selected from a prestored spreading code table according to acquired interference spectrum information and corresponding to the interference spectrum information; the confirmation module is used for sending a second response frame for confirming the target spreading code if a second request frame for carrying out spreading modulation according to the spreading code is received and the spreading code of the second request frame is consistent with the target spreading code; and the receiving module is used for receiving the information frame modulated according to the target spread spectrum code.
In a fourth aspect, the present invention provides a satellite communication anti-interference apparatus based on satellite-to-ground handshake, including: a request module, configured to send a first request frame; the processing module is used for sending a second request frame modulated according to a target spread spectrum code if a first response frame containing target spread spectrum code identification information is received, wherein the target spread spectrum code is a spread spectrum code which is selected by a satellite terminal from a pre-stored spread spectrum code table according to acquired interference spectrum information and corresponds to the interference spectrum information; and the sending module is used for sending an information frame modulated according to the target spreading code if a second response frame for confirming the target spreading code is received.
In a fifth aspect, the present invention provides an electronic device, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the steps of the satellite communication anti-interference method based on the satellite-to-ground handshake according to the first aspect or the second aspect of the present invention.
In a sixth aspect, the present invention provides a non-transitory computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the satellite communication anti-jamming method based on the satellite-to-ground handshake of the first or second aspect of the present invention.
According to the satellite communication anti-interference method based on satellite-ground handshake provided by the embodiment of the invention, the spread spectrum code table is maintained by the satellite terminal and the ground terminal together, and the corresponding target spread spectrum code is selected for communication according to the interference spectrum information, so that better anti-interference capability is achieved, and external interference such as non-cooperative interference can be effectively resisted.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
Fig. 1 is a flowchart of a satellite communication anti-interference method based on satellite-to-ground handshake according to an embodiment of the present invention;
fig. 2 is a flowchart of a satellite communication anti-interference method based on satellite-to-ground handshake according to another embodiment of the present invention;
fig. 3 is a structural diagram of an anti-interference device for satellite communication based on satellite-to-ground handshake according to an embodiment of the present invention;
fig. 4 is a structural diagram of a satellite communication anti-jamming device based on satellite-to-ground handshake according to another embodiment of the present invention;
fig. 5 is a schematic physical structure diagram of an electronic device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The traditional multi-hop system and the multi-carrier system improve the anti-interference and anti-fading capability of the communication system to a certain extent. But in application scenarios such as satellite-to-ground transmission, the type of interference such as non-cooperative interference is encountered, which seriously affects the transmission of signals.
To solve the problem, the embodiment of the invention provides a satellite communication anti-interference method based on satellite-to-ground handshake. The method may be applied to the above scenario of satellite-to-ground data transmission, and may also be applied to other similar scenarios, which is not specifically limited in the embodiment of the present invention. In addition, the execution subject corresponding to the method may be a satellite terminal, or may also be a ground terminal, or may be implemented by interaction between a satellite terminal and a ground terminal, which is not specifically limited in this embodiment of the present invention. For convenience of description, the embodiment of the present invention takes an execution main body as a satellite terminal and a ground terminal in sequence as an example, and explains the satellite communication anti-interference method based on the satellite-ground handshake provided by the embodiment of the present invention. For convenience of description, the satellite terminal and the ground terminal are mentioned in the embodiments of the present invention, and the satellite terminal may be specifically a satellite payload, and the ground terminal may be ground equipment such as each base station.
Fig. 1 is a flowchart of a satellite communication anti-interference method based on satellite-to-ground handshake according to an embodiment of the present invention, and as shown in fig. 1, the satellite communication anti-interference method based on satellite-to-ground handshake according to an embodiment of the present invention includes:
101, if receiving the first request frame, sending a first response frame containing the identification information of the target spreading code. The target spread spectrum code is a spread spectrum code which is selected from a prestored anti-interference code table and corresponds to the interference spectrum information according to the acquired interference spectrum information.
Before executing 101, both the satellite terminal and the ground terminal maintain and pre-store a spreading code table, a spreading code word for suppressing the interference currently received by the satellite terminal can be selected from the spreading code table, and the code word is applied to an information frame to realize communication, thereby achieving the effect of suppressing the interference.
The satellite terminal performs spectrum detection analysis on the surrounding electromagnetic environment in real time to obtain the spectrum information of the current electromagnetic environment, and obtains interference spectrum information according to the spectrum information of the electromagnetic environment, wherein the interference spectrum information comprises interference cluster frequency points. The embodiment of the invention does not specifically limit the method for acquiring the interference cluster frequency point in the interference spectrum information, and includes but is not limited to:
the satellite terminal obtains two detection threshold values of high and low according to a continuous Mean value removal algorithm (CME for short), divides a frequency spectrum obtained by a frequency spectrum detection result into two parts, and forms continuous items in the frequency spectrum value higher than the low threshold into a cluster. And after the low threshold detection is finished, sequentially comparing the maximum value of the spectral lines in each cluster of the frequency spectrum with the high threshold, and if the maximum value exceeds the high threshold, marking the corresponding cluster as interference so as to obtain an interference cluster frequency point.
In 101, a satellite terminal waits for receiving a first request frame sent by a ground terminal, where the first request frame is used to initiate a communication request, and if the first request frame is received, the satellite terminal selects a spreading code corresponding to interference spectrum information from a pre-stored anti-interference code table, where the spreading code is an optimal code capable of suppressing the interference spectrum, and uses the optimal code as a target spreading code, and in the spreading code table, each spreading code has identification information corresponding to the spreading code, where the identification information is used to search for the spreading code, and an embodiment form of the identification information includes an index and the like. The satellite terminal sends a first response frame containing target spread spectrum code identification information to the ground terminal, and the first response frame is used for informing the ground terminal to carry out communication by using the target spread spectrum code.
And 102, if a second request frame which carries out spread spectrum modulation according to the spreading code is received, and the spreading code of the second request frame is consistent with the target spreading code, sending a second response frame for confirming the target spreading code.
In 102, after receiving the first response frame, the ground terminal finds out a corresponding spreading code according to the identification information of the target spreading code in the first response frame, and sends a second request frame modulated by the target spreading code, which is used for confirming whether the spreading code is correct or not with the satellite terminal. And after receiving the second request frame, the satellite terminal verifies whether the used spreading code is consistent with the target spreading code. And if the spreading code used by the second request frame is consistent with the target spreading code, sending confirmation information for confirming that the spreading code used by the ground terminal is correct, namely a second response frame, to the ground terminal.
103. And receiving the information frame modulated according to the target spreading code.
And after receiving the second response frame containing the confirmation information, the ground terminal starts to transmit the information frame modulated according to the target spread spectrum code, and the satellite terminal receives the information frame.
According to the satellite communication anti-interference method based on satellite-ground handshake provided by the embodiment of the invention, the spread spectrum code table is maintained by the satellite terminal and the ground terminal together, and the corresponding target spread spectrum code is selected for communication according to the interference spectrum information, so that better anti-interference capability is achieved, and external interference such as non-cooperative interference can be effectively resisted.
Based on the content of the foregoing embodiment, as an optional embodiment, if a second request frame that is subjected to spreading modulation according to a spreading code is received, and the spreading code of the second request frame is inconsistent with the target spreading code, the first response frame that includes the identification information of the target spreading code is sent again.
And after receiving the second request frame, the satellite terminal verifies whether the used spreading code is consistent with the target spreading code. And if the spreading code used by the second request frame is inconsistent with the target spreading code, the spreading code searched by the ground terminal is inconsistent with the target spreading code informed by the satellite terminal. The satellite terminal sends the first response frame containing the identification information of the target spreading code to the ground terminal again for informing the ground terminal to carry out communication with the target spreading code.
And if the spreading code in the second request frame received again is still inconsistent with the target spreading code, repeating the process.
In a preferred embodiment, if the spreading code in the second request frame received again is still inconsistent with the target spreading code after reaching the preset number of times, the warning message is sent to the ground terminal.
According to the satellite communication anti-interference method based on the satellite-to-ground handshake provided by the embodiment of the invention, the spread spectrum codes used by the second request frame are verified, and the response is carried out in time when the spread spectrum codes used by the second request frame are inconsistent, so that the satellite communication anti-interference method based on the satellite-to-ground handshake can be recovered to be normal as soon as possible if corresponding errors occur in the satellite communication anti-interference process.
Based on the content of the foregoing embodiment, as an optional embodiment, after receiving the information frame modulated according to the target spreading code, the method further includes: if the end flag is detected in the information frame, the received acknowledgement information is sent.
The end of the information frame sent by the ground terminal is added with an end symbol, and the satellite terminal indicates that the transmission of the information frame is completed when receiving the end symbol. And after the satellite terminal correctly detects the end symbol at the end of the received information frame, sending a data frame receipt to inform the ground terminal of the received information frame.
Based on the content of the foregoing embodiment, as an optional embodiment, the method further includes, if it is detected that the interference spectrum information obtained in real time changes, selecting a second target spreading code from a pre-stored anti-interference code table according to the interference spectrum information obtained in real time, and sending a first response frame including identification information of the second target spreading code.
And the satellite terminal detects the interference spectrum information in real time, and if the interference spectrum information is detected to be inconsistent with the interference spectrum information when the target spread spectrum code is selected, a new target spread spectrum code, namely the second target spread spectrum code, is selected from a prestored anti-interference code table according to the new interference spectrum information acquired in real time, and a first response frame containing identification information of the second target spread spectrum code is sent. And the ground terminal selects the corresponding spreading code from the spreading code table after receiving the first response frame containing the second target spreading code identification information, modulates the corresponding spreading code by using the new spreading code, and sends a second request frame again. After receiving the second request frame, the satellite terminal sends out a corresponding second response frame.
According to the satellite communication anti-interference method based on satellite-to-ground handshake provided by the embodiment of the invention, the received data frame is detected in real time through the satellite terminal, and a link can be established according to a new spread spectrum code under the condition that the interference transmission is changed, so that stronger anti-interference capability is realized.
Fig. 2 is a flowchart of a satellite communication anti-interference method based on satellite-to-ground handshake according to another embodiment of the present invention, and as shown in fig. 2, an embodiment of the present invention provides a satellite communication anti-interference method based on satellite-to-ground handshake, including:
a first request frame is sent 201.
Before 201, both the satellite terminal and the ground terminal maintain and pre-store a spreading code table, a spreading code word for suppressing the current interference can be selected from the spreading code table, and the spreading code word is applied to an information frame to realize communication, so that the effect of suppressing the interference is achieved.
In 201, a ground terminal initiates a communication request and transmits a first request frame to a satellite terminal.
202, if a first response frame containing the identification information of the target spreading code is received, a second request frame modulated according to the target spreading code is sent, wherein the target spreading code is a spreading code which is selected by the satellite terminal from a pre-stored anti-interference code table according to the acquired interference spectrum information and corresponds to the interference spectrum information.
In 202, after the ground terminal sends the first request frame, the satellite terminal receives the first request frame sent by the ground terminal, the satellite terminal selects a spreading code corresponding to interference spectrum information from a pre-stored anti-interference code table, the spreading code is an optimal code capable of suppressing the interference spectrum, the optimal code is used as a target spreading code, each spreading code in the spreading code table has identification information corresponding thereto, the identification information is used for searching for the spreading code, and the embodiment form of the identification information includes an index and the like. The satellite terminal sends a first response frame containing target spread spectrum code identification information to the ground terminal, and the first response frame is used for informing the ground terminal to carry out communication by using the target spread spectrum code.
And if the ground terminal receives the first response frame containing the identification information of the target spreading code, searching for the corresponding spreading code according to the identification information of the target spreading code in the first response frame, and sending a second request frame modulated by the target spreading code for confirming whether the spreading code is correct or not with the satellite terminal.
203. And if a second response frame for confirming the target spreading code is received, sending an information frame modulated according to the target spreading code.
In 203, the satellite terminal verifies whether the spreading code used is identical to the target spreading code after receiving the second request frame. And if the spreading code used by the second request frame is consistent with the target spreading code, sending confirmation information for confirming that the spreading code used by the ground terminal is correct, namely a second response frame, to the ground terminal.
And if the ground terminal starts to transmit the information after receiving a second response frame which contains the confirmation information and is sent by the satellite terminal, the ground terminal sends an information frame modulated according to the target spreading code to the satellite terminal.
According to the satellite communication anti-interference method based on satellite-ground handshake provided by the embodiment of the invention, the spread spectrum code table is maintained by the satellite terminal and the ground terminal together, and the corresponding target spread spectrum code is selected for communication according to the interference spectrum information, so that better anti-interference capability is achieved, and external interference such as non-cooperative interference can be effectively resisted.
Based on the content of the foregoing embodiment, as an optional embodiment, if the received confirmation information is not received within the preset time period, the data transmission result of this time is set as failure.
The end of the information frame sent by the ground terminal is added with an end symbol, and the satellite terminal indicates that the transmission of the information frame is completed when receiving the end symbol. After the satellite terminal correctly detects the end symbol at the end of the received information frame, the satellite terminal sends a data frame receipt to inform the ground terminal that the information frame has been received. If the ground terminal does not receive the corresponding received confirmation information within the preset time length, such as the data frame receipt, the result of the information transmission is set as failure. Can be used as the basis for whether the communication link is reestablished to transmit data in the subsequent operation.
Fig. 3 is a structural diagram of a satellite communication anti-jamming device based on satellite-to-ground handshake according to an embodiment of the present invention, and as shown in fig. 3, the satellite communication anti-jamming device based on satellite-to-ground handshake includes: a selection module 301, a confirmation module 302 and a receiving module 303. The selecting module 301 is configured to send a first response frame including identification information of a target spreading code if the first request frame is received, where the target spreading code is a spreading code selected from a prestored spreading code table according to the acquired interference spectrum information and corresponding to the interference spectrum information; the confirmation module 302 is configured to send a second response frame for confirming the target spreading code if a second request frame for performing spreading modulation according to the spreading code is received and the spreading code of the second request frame is consistent with the target spreading code; the receiving module 303 is configured to receive an information frame modulated according to a target spreading code.
The selection module 301 and the ground terminal both maintain and pre-store a spreading code table, and a spreading code for suppressing the current interference can be selected from the spreading code table, and the code is applied to the information frame to realize communication, thereby achieving the effect of suppressing the interference.
The selecting module 301 waits for receiving a first request frame sent by the ground terminal, where the first request frame is used to initiate a communication request, and if the first request frame is received, sends a first response frame containing identification information of the target spreading code to the ground terminal, so as to notify the ground terminal of performing communication with the target spreading code.
The selecting module 301 performs spectrum detection and analysis on the surrounding electromagnetic environment in real time to obtain spectrum information of the current electromagnetic environment, and obtains interference spectrum information according to the spectrum information of the electromagnetic environment, wherein the interference spectrum information includes interference cluster frequency points.
The selecting module 301 selects a spreading code corresponding to interference spectrum information from a pre-stored anti-interference code table, where the spreading code is an optimal code capable of suppressing the interference cluster frequency point, and the optimal code is used as a target spreading code.
After receiving the first response frame, the ground terminal finds out the corresponding spreading code according to the identification information of the target spreading code in the first response frame, and sends a second request frame modulated by the target spreading code, which is used for confirming whether the spreading code is correct with the confirmation module 302. The confirmation module 302 verifies whether the spreading code used is identical to the target spreading code after receiving the second request frame. And if the spreading code used by the second request frame is consistent with the target spreading code, sending confirmation information for confirming that the spreading code used by the ground terminal is correct, namely a second response frame, to the ground terminal.
After receiving the second response frame containing the acknowledgement information, the ground terminal starts to transmit the information frame modulated according to the target spreading code, and the receiving module 303 receives the information frame.
According to the satellite communication anti-jamming device based on satellite-ground handshake provided by the embodiment of the invention, the spread spectrum code table is maintained together by the selection module of the satellite terminal and the ground terminal, and the corresponding target spread spectrum code is selected for communication according to the interference spectrum information, so that the anti-jamming capability is better, and external interferences such as non-cooperative interference and the like are effectively resisted.
Fig. 4 is a structural diagram of a satellite communication anti-jamming device based on satellite-to-ground handshake according to another embodiment of the present invention, and as shown in fig. 4, the satellite communication anti-jamming device based on satellite-to-ground handshake includes: a request module 401, a processing module 402 and a sending module 403. The request module 401 is configured to send a first request frame; the processing module 402 is configured to send a second request frame modulated according to a target spreading code if a first response frame including identification information of the target spreading code is received, where the target spreading code is a spreading code selected by the satellite terminal from a prestored spreading code table according to the acquired interference spectrum information and corresponding to the interference spectrum information; the sending module 403 is configured to send an information frame modulated according to the target spreading code if a second response frame for confirming the target spreading code is received.
The satellite terminal and the processing module 402 maintain and pre-store a spreading code table together, and a spreading code word for suppressing the current interference can be selected from the spreading code table and applied to an information frame to realize communication, thereby achieving the effect of suppressing the interference.
The request module 401 initiates a communication request and sends a first request frame to the satellite terminal.
After the request module 401 sends the first request frame, the satellite terminal receives the first request frame sent by the request module 401, and the satellite terminal sends a first response frame containing the identification information of the target spreading code to the ground terminal, so as to inform the ground terminal to perform communication with the target spreading code. The satellite terminal selects a spreading code corresponding to interference spectrum information from a pre-stored anti-interference code table, the spreading code is an optimal code capable of suppressing the interference spectrum, the optimal code is used as a target spreading code, each spreading code in the spreading code table has identification information corresponding to the spreading code, the identification information is used for searching the spreading code, and the embodiment form of the identification information comprises indexes and the like.
If the processing module 402 receives the first response frame containing the identification information of the target spreading code, finds out the corresponding spreading code according to the identification information of the target spreading code in the first response frame, and then sends a second request frame modulated by the target spreading code for confirming whether the spreading code is correct or not with the satellite terminal.
And after receiving the second request frame, the satellite terminal verifies whether the used spreading code is consistent with the target spreading code. And if the spreading code used by the second request frame is consistent with the target spreading code, sending confirmation information for confirming that the spreading code used by the ground terminal is correct, namely a second response frame, to the processing module.
If the processing module 402 receives the second response frame containing the acknowledgement information, it starts to transmit information, and the sending module 403 sends an information frame modulated according to the target spreading code to the satellite terminal.
According to the satellite communication anti-jamming device based on satellite-to-ground handshake provided by the embodiment of the invention, the spread spectrum code table is maintained through the satellite terminal and the processing module, and the corresponding target spread spectrum code is selected for communication according to the interference spectrum information, so that better anti-jamming capability is achieved, and external interferences such as non-cooperative interference and the like are effectively resisted.
The device embodiment provided in the embodiments of the present invention is for implementing the above method embodiments, and for details of the process and the details, reference is made to the above method embodiments, which are not described herein again.
Fig. 5 is a schematic entity structure diagram of an electronic device according to an embodiment of the present invention, and as shown in fig. 5, the electronic device may include: a processor (processor)501, a communication interface (communication interface)502, a memory (memory)503, and a bus 504, wherein the processor 501, the communication interface 502, and the memory 503 are configured to communicate with each other via the bus 504. The communication interface 502 may be used for information transfer of an electronic device. The processor 501 may call logic instructions in the memory 503 to perform a method comprising: if the first request frame is received, sending a first response frame containing target spread spectrum code identification information, wherein the target spread spectrum code is a spread spectrum code which is selected from a prestored spread spectrum code table according to the acquired interference spectrum information and corresponds to the interference spectrum information; if a second request frame for performing spread spectrum modulation according to the spread spectrum code is received and the spread spectrum code of the second request frame is consistent with the target spread spectrum code, sending a second response frame for confirming the target spread spectrum code; and receiving the information frame modulated according to the target spreading code.
In addition, the logic instructions in the memory 503 may be implemented in the form of software functional units and stored in a computer readable storage medium when the logic instructions are sold or used as independent products. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the above-described method embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
An embodiment of the present invention provides a non-transitory computer-readable storage medium, which stores computer instructions for causing a computer to execute the satellite communication anti-interference method based on satellite-to-ground handshake provided in the foregoing embodiment, for example, including: transmitting a first request frame; if a first response frame containing target spread spectrum code identification information is received, sending a second request frame modulated according to the target spread spectrum code, wherein the target spread spectrum code is a spread spectrum code which is selected by the satellite terminal from a prestored spread spectrum code table according to the acquired interference spectrum information and corresponds to the interference spectrum information; and if a second response frame for confirming the spreading code is received, sending an information frame modulated according to the target spreading code.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A satellite communication anti-interference method based on satellite-to-ground handshake is characterized by comprising the following steps:
if a first request frame is received, sending a first response frame containing target spread spectrum code identification information, wherein the target spread spectrum code is a spread spectrum code which is selected from a prestored spread spectrum code table according to the acquired interference spectrum information and corresponds to the interference spectrum information;
if a second request frame for performing spread spectrum modulation according to a spread spectrum code is received, and the spread spectrum code of the second request frame is consistent with the target spread spectrum code, sending a second response frame for confirming the target spread spectrum code;
and receiving the information frame modulated according to the target spread spectrum code.
2. The method of claim 1, wherein if a second request frame is received, wherein the second request frame is spread and modulated according to a spreading code, and wherein the spreading code of the second request frame does not match the target spreading code, then a first response frame containing the identification information of the target spreading code is sent again.
3. The method of claim 1, wherein after receiving the information frame modulated according to the target spreading code, further comprising:
if an end marker is detected in the information frame, sending a received acknowledgement message.
4. The method of claim 1, further comprising:
and if the interference spectrum information acquired in real time is detected to be changed, selecting a second target spread spectrum code from a pre-stored anti-interference code table according to the interference spectrum information acquired in real time, and sending a first response frame containing identification information of the second target spread spectrum code.
5. A satellite communication anti-interference method based on satellite-to-ground handshake is characterized by comprising the following steps:
transmitting a first request frame;
if a first response frame containing target spread spectrum code identification information is received, sending a second request frame modulated according to the target spread spectrum code, wherein the target spread spectrum code is a spread spectrum code which is selected by a satellite terminal from a prestored spread spectrum code table according to acquired interference spectrum information and corresponds to the interference spectrum information;
and if a second response frame for confirming the target spreading code is received, sending an information frame modulated according to the target spreading code.
6. The method of claim 5, wherein the data transmission result is set as failure if the received confirmation message is not received within a preset time period.
7. A satellite communication anti-jamming device based on satellite-ground handshake is characterized by comprising:
a selecting module, configured to send a first response frame including identification information of a target spreading code if a first request frame is received, where the target spreading code is a spreading code selected from a prestored spreading code table according to acquired interference spectrum information and corresponding to the interference spectrum information;
the confirmation module is used for sending a second response frame for confirming the target spreading code if a second request frame for carrying out spreading modulation according to the spreading code is received and the spreading code of the second request frame is consistent with the target spreading code;
and the receiving module is used for receiving the information frame modulated according to the target spread spectrum code.
8. A satellite communication anti-jamming device based on satellite-ground handshake is characterized by comprising:
a request module, configured to send a first request frame;
the processing module is used for sending a second request frame modulated according to a target spread spectrum code if a first response frame containing target spread spectrum code identification information is received, wherein the target spread spectrum code is a spread spectrum code which is selected by a satellite terminal from a pre-stored spread spectrum code table according to acquired interference spectrum information and corresponds to the interference spectrum information;
and the sending module is used for sending an information frame modulated according to the target spreading code if a second response frame for confirming the target spreading code is received.
9. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor when executing the program implements the steps of the satellite communication anti-jamming method based on satellite-to-ground handshake according to any of claims 1 to 6.
10. A non-transitory computer readable storage medium having stored thereon a computer program, wherein the computer program when executed by a processor implements the steps of the satellite communication anti-jamming method based on satellite-to-ground handshake according to any of claims 1 to 6.
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| CN1303191A (en) * | 1994-02-09 | 2001-07-11 | Ntt移动通信网株式会社 | Method and system of code division multiple access mobile communication |
| CN105024748A (en) * | 2015-08-04 | 2015-11-04 | 北京理工大学 | Method and device of uplink access of satellite communication |
| US9743293B1 (en) * | 2016-07-25 | 2017-08-22 | Samsung Electronics Co., Ltd. | System and method for local spreading code manipulation for interference mitigation |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1303191A (en) * | 1994-02-09 | 2001-07-11 | Ntt移动通信网株式会社 | Method and system of code division multiple access mobile communication |
| CN105024748A (en) * | 2015-08-04 | 2015-11-04 | 北京理工大学 | Method and device of uplink access of satellite communication |
| US9743293B1 (en) * | 2016-07-25 | 2017-08-22 | Samsung Electronics Co., Ltd. | System and method for local spreading code manipulation for interference mitigation |
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