CN115396013A - Measurement, operation and control integrated system, satellite-to-ground communication method, device and medium - Google Patents
Measurement, operation and control integrated system, satellite-to-ground communication method, device and medium Download PDFInfo
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- CN115396013A CN115396013A CN202211054417.7A CN202211054417A CN115396013A CN 115396013 A CN115396013 A CN 115396013A CN 202211054417 A CN202211054417 A CN 202211054417A CN 115396013 A CN115396013 A CN 115396013A
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Abstract
The application discloses a measurement, operation and control integrated system, a satellite-ground communication method, a device and a medium, relates to the technical field of satellite communication, is used for realizing the work of satellite measurement, operation and control management and the like, and aims to solve the problem that the current measurement, operation and control separation mode is difficult to adapt to the measurement, operation and control management requirements of future constellations.
Description
Technical Field
The present application relates to the field of satellite communications technologies, and in particular, to a measurement, operation, and control integrated system, a satellite-to-ground communications method, an apparatus, and a medium.
Background
With the increasing number of commercial microsatellites and the increasing complexity of constellation networking, the traditional mode based on the measurement and control center + the operation and control center is difficult to adapt to the measurement, operation and control management requirements of future constellations. The traditional measurement and control and operation control separation mode only provides functions of remote measurement and control of a satellite, life state monitoring and the like for a measurement and control center, the measurement and control center puts forward operation and control requirements on service data, and tasks such as task planning, task monitoring and inter-satellite communication management are completed. And only the task is issued to the measurement and control center, the measurement and control center only serves as a data channel, and the service data is still processed by the operation and control center. In the existing mode, the satellite also has two working modes, namely a low-speed measurement and control mode and a high-speed operation and control mode, which correspond to different frequency bands.
This mode results in short satellite communication times and long revisit periods. Aiming at the urgent requirements of a special operation mode and cost reduction and efficiency improvement of a commercial satellite, the in-orbit operation management efficiency of the commercial satellite needs to be improved, the in-orbit management cost of the satellite is reduced, a set of ground measurement, operation and control integrated system is required to be established, the measurement, operation and control management and other work of a plurality of low-orbit commercial satellites can be realized under the condition that only one set of ground system is operated, the satellite telemetering data and service data are analyzed, processed and stored in real time, and the practical requirements of a plurality of satellites, a plurality of systems and a plurality of operation modes are met.
Therefore, those skilled in the art need an integrated measurement, operation and control system to solve the problem that the current measurement, control and center mode is difficult to adapt to the measurement, operation and control management requirements of future constellations.
Disclosure of Invention
The application aims to provide a measurement, operation and control integrated system, a satellite-to-ground communication method, a device and a medium, and solves the problem that the current measurement, operation and control center and operation and control center mode is difficult to adapt to the measurement, operation and control management requirements of future constellations.
In order to solve the above technical problem, the present application provides a measurement, operation and control integrated system, which includes: the system comprises a measurement, operation and control module and a station control module;
the measurement, operation and control module is integrated with a measurement and control board card, a data transmission board card, a measurement and control baseband, a data transmission baseband and a switching module; wherein, the rate of the measurement and control baseband is lower than that of the data transmission baseband;
the measurement and control board card and the data transmission board card are respectively connected with the antenna feedback module through channel equipment and used for receiving or transmitting satellite signals;
the measurement and control board card and the data transmission board card are connected with the measurement and control baseband and the data transmission baseband through a switching module, and the switching module is used for switching the measurement and control board card and the data transmission board card to connect the measurement and control baseband or the data transmission baseband;
the station control module is connected with the switching module and is used for controlling the switching module to realize the switching function.
Preferably, the system further comprises a plurality of remote receiving nodes connected with the antenna feeding module, and the arrangement positions of the remote receiving nodes are different.
In order to solve the technical problem, the application also provides a satellite-ground communication method, which is applied to a measurement, operation and control integrated system comprising a measurement, operation and control module and a station control module, wherein the measurement, operation and control module is integrated with a measurement and control board card, a data transmission board card, a measurement and control baseband, a data transmission baseband and a switching module; wherein, the rate of the measurement and control base band is lower than that of the data transmission base band; the measurement and control board card and the data transmission board card are respectively connected with the antenna feedback module through channel equipment and used for receiving or transmitting satellite signals; the measurement and control board card and the data transmission board card are connected with the measurement and control baseband and the data transmission baseband through a switching module, and the switching module is used for switching the measurement and control board card and the data transmission board card to connect the measurement and control baseband or the data transmission baseband; the station control module is connected with the switching module and is used for controlling the switching module to realize the switching function; the method comprises the following steps:
when receiving satellite signals, judging whether satellite working mode information is received in advance;
if so, controlling the switching module to switch and connect the corresponding baseband according to the satellite working mode information;
if not, acquiring a data frame header of the satellite signal, and controlling a switching module to switch and connect a corresponding baseband according to the data frame header; the data frame header of the satellite signal comprises a pseudo code initial item used for indicating that the satellite is in a low-speed measurement control or high-speed operation control working mode.
Preferably, the method further comprises the following steps:
adding a pseudo code initial item in a data frame of a control instruction sent to a satellite; the control instruction comprises pseudo code initial items, a satellite and a control object, wherein the pseudo code initial items and the satellite have a one-to-one correspondence relation and are used for representing the control object of the control instruction, and the control instruction is executed only when the satellite identifies that the control instruction comprises the corresponding pseudo code initial items;
control commands are broadcast to each satellite.
Preferably, the method further comprises the following steps:
calculating a task arc section parameter corresponding to each satellite according to a preset number of two lines; the task arc segment parameters comprise entry time, exit time, arc segment duration, a highest elevation angle and waiting time required for starting a task;
obtaining a weighted value corresponding to each satellite according to each group of task arc segment parameters by a weighted arithmetic mean operator method;
selecting a satellite corresponding to the maximum value in the weighted values as a target satellite for completing daily measurement, operation and control tasks, and adding a pseudo code initial item corresponding to the target satellite in a control instruction;
control commands are broadcast to each satellite.
Preferably, there is inter-satellite communication between satellites located in the same orbital plane or in the same phase, and the method further includes:
when an uplink instruction needs to be sent, adding a pseudo code initial item corresponding to a target satellite in a data frame of the uplink instruction;
and broadcasting the uplink instruction to each satellite so that the target satellite receives the uplink instruction and then transmits the uplink instruction to other satellites which are positioned on the same orbit plane or the same phase with the target satellite through inter-satellite communication.
Preferably, there is inter-satellite communication between satellites located in the same orbital plane or in the same phase, and the method further includes:
when a downlink instruction is received, analyzing the downlink instruction to obtain a plurality of data frames comprising different pseudo code initial terms; the downlink instruction is obtained by integrating downlink data after the target satellite receives the downlink data sent by other satellites on the same orbital plane or the same phase through inter-satellite communication;
and determining the satellite corresponding to each data frame according to the initial pseudo code.
Preferably, the obtaining a weighted value corresponding to each satellite according to each set of task arc parameters by a weighted arithmetic mean operator method comprises:
obtaining a weighted value corresponding to each satellite according to each group of task arc section parameters through a first formula;
the first formula includes:
K＝0.7×α+0.3×(T2-T1)
wherein, K is a weighted value, α is the highest elevation angle, T1 is the inbound time, T2 is the outbound time, and T2-T1 is the arc segment duration.
In order to solve the above technical problem, the present application further provides a satellite-ground communication device, including:
the judging module is used for judging whether satellite working mode information is received in advance or not when a satellite signal is received, if so, triggering the first switching module, and otherwise, triggering the second switching module;
the first switching module is used for controlling the switching module to switch and connect the corresponding baseband according to the satellite working mode information;
the second switching module is used for acquiring a data frame header of the satellite signal and controlling the switching module to switch and connect the corresponding baseband according to the data frame header; the data frame header of the satellite signal comprises a pseudo code initial item used for indicating that the satellite is in a low-speed measurement control or high-speed operation control working mode.
Preferably, the method further comprises the following steps:
the uplink module is used for adding a pseudo code initial item in a data frame of a control command sent to the satellite; the control instruction comprises pseudo code initial items, a satellite and a control object, wherein the pseudo code initial items and the satellite have a one-to-one correspondence relation and are used for representing the control object of the control instruction, and the control instruction is executed only when the satellite identifies that the control instruction comprises the corresponding pseudo code initial items; control commands are broadcast to each satellite.
The preferred transmission module is used for calculating the corresponding task arc section parameters of each satellite according to two preset lines of numbers; the task arc segment parameters comprise entry time, exit time, arc segment duration, a highest elevation angle and waiting time required for starting a task; obtaining a weighted value corresponding to each satellite according to each group of task arc segment parameters by a weighted arithmetic mean operator method; selecting a satellite corresponding to the maximum value in the weighted values as a target satellite for completing a daily measurement, operation and control task, and adding a pseudo code initial item corresponding to the target satellite in a daily measurement, operation and control task instruction; control commands are broadcast to each satellite.
The first inter-satellite communication module is used for adding a pseudo code initial item corresponding to a target satellite in a data frame of an uplink instruction when the uplink instruction needs to be sent; and broadcasting the uplink command to each satellite so that the target satellite can transmit the uplink command to other satellites which are positioned on the same orbit plane or the same phase with the target satellite through inter-satellite communication after receiving the uplink command.
The second inter-satellite communication module is used for analyzing the downlink instruction to obtain a plurality of data frames comprising different pseudo code initial items when the downlink instruction is received; the downlink instruction is obtained by integrating downlink data after the target satellite receives the downlink data sent by other satellites on the same orbital plane or the same phase through inter-satellite communication; and determining the satellite corresponding to each data frame according to the initial pseudo code item.
In order to solve the above technical problem, the present application further provides a satellite-ground communication device, including:
a memory for storing a computer program;
a processor for implementing the steps of the satellite-to-ground communication method as described above when executing the computer program.
To solve the above technical problem, the present application further provides a computer-readable storage medium, on which a computer program is stored, and the computer program, when executed by a processor, implements the steps of the satellite-ground communication method as described above.
The application provides a survey, operation and control integrated system, the original survey and control integrated board card and the data transmission integrated board card that are used for realizing satellite survey and control and satellite operation and control tasks respectively are integrated together, and be supporting with corresponding baseband, because the speed of the baseband that the task and the operation and control task used are accomplished to the completion is different, so survey and control integrated board card and data transmission integrated board card can not general same baseband, this application then through switching module control and the baseband that the integrated board card is connected is specifically for surveying and control baseband or data transmission baseband, specifically, the switching module is controlled by the station control module, when the station control module judges that needs to carry out the task of surveying and control, then control the switching module makes the baseband be connected with the data transmission integrated board card, in order to accomplish the task of surveying and control, when the station control module judges that needs to carry out the operation and control task, then control the switching module makes the data transmission baseband be connected with the data transmission integrated board card, in order to accomplish the task of ground station, thereby realize the integration of ground station, the integration of the operation and control mode, realize accomplishing the function that two work centers can realize by a set of equipment and accomplish originally can realize the station quantity and cost of building of ground station, it is unified to carry out satellite survey and control, it is also more conveniently to carry out the scheduling and control.
The satellite-ground communication method, the satellite-ground communication device and the computer readable storage medium correspond to the measurement, operation and control integrated system, and the effect is the same as that of the measurement, operation and control integrated system.
Drawings
In order to more clearly illustrate the embodiments of the present application, the drawings needed for the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings can be obtained by those skilled in the art without inventive effort.
Fig. 1 is a structural diagram of a measurement, operation and control integrated system provided by the invention;
fig. 2 is a flowchart of a satellite-ground communication method for receiving signals according to the present invention;
FIG. 3 is a flow chart of a method of transmitting signals for satellite-to-ground communications according to the present invention;
FIG. 4 is a flowchart of a satellite-to-ground preferred communication method according to the present invention;
fig. 5 is a schematic structural diagram of a constellation networking provided in the present invention;
FIG. 6 is a block diagram of an inter-satellite communication device according to the present invention;
fig. 7 is a structural diagram of another inter-satellite communication device provided by the present invention.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without any creative effort belong to the protection scope of the present application.
The core of the application is to provide a measurement, operation and control integrated system, a satellite-ground communication method, a device and a medium.
In order that those skilled in the art will better understand the disclosure, the following detailed description will be given with reference to the accompanying drawings.
At present, in a communication structure between a ground station and a satellite, the ground station adopts a structure of separating measurement and control from operation and control, and the measurement and control task and the operation and control task of the satellite are respectively realized. However, with the increasing number of satellites and the increasing complexity of constellation networking, the architecture with separate measurement, control and operation control cannot meet the management requirements of measurement, operation and control more and more, so that a system with integrated measurement, operation and control can implement two tasks of measurement, control and operation control of satellites by using one ground station, so as to facilitate management.
Based on the above problem, as shown in fig. 1, the present application provides a measurement, operation and control integrated system, which includes: a measurement, operation and control module 11 and a station control module 12;
the measurement, operation and control module is integrated with a measurement and control board card 111, a data transmission board card 112, a measurement and control baseband 113, a data transmission baseband 114 and a switching module 115; wherein, the rate of the measurement and control baseband 113 is lower than that of the data transmission baseband 114;
the measurement and control board card 111 and the transmission board card 112 are respectively connected with the antenna feed module 13 through the channel equipment 14, and are used for receiving or sending satellite signals and processing the satellite signals;
the measurement and control board card 111 and the data transmission board card 112 are connected with the measurement and control baseband 113 and the data transmission baseband 114 through a switching module 115, and the switching module 115 is used for switching the measurement and control board card 111 and the data transmission board card 112 to connect with the measurement and control baseband 113 or the data transmission baseband 114;
the station control module 12 is connected to the switching module 115, and is configured to control the switching module 115 to implement a switching function.
It is easy to know that, in a complete integrated system capable of implementing functions independently, the system, in addition to the above-mentioned measurement, operation and control module 11 and station control module 12, as shown in fig. 1, further includes an antenna feeder module 13, a channel device 14, a device security module 15, and the like.
Wherein, the antenna, the servo and the feed source are collectively called as the antenna, the servo and the feed source, and the antenna servo feed module 13 is used for realizing the communication between the ground station and the satellite, namely realizing the receiving and sending of the satellite signal; the channel device 14 is a transmission channel of the satellite signal in the measurement, operation and control integrated system; the equipment security module 15 is responsible for the security of the power, the network and the like of all the equipment in the integrated system for measurement, operation and control, and ensures the normal operation of the integrated system for measurement, operation and control.
It should be further noted that the switching module 115 provided in the present application is used to implement a connection relationship between the switching measurement and control board 111 and the baseband connected to the digital transmission board 112 and the measurement and control baseband 113 or the digital transmission baseband 114, and in practical applications, the connection relationship can be implemented by devices having a gating function, such as a single-pole double-throw switch and a multiplexer, and a person in the art can easily select an appropriate implementation manner of the switch according to an actual engineering situation, so that details of the present application are omitted herein, and the present application does not limit the switch to only several implementation manners of the above examples.
In addition, it should be noted that, in this embodiment, the existing measurement, control, operation and control integrated system that integrates the separate measurement, control, operation and control workstations is used to facilitate the management of satellite measurement, control, operation and control tasks, however, in this application scenario, the number of ground stations that establish a communication relationship with the satellite is reduced from two to one, and in the transmission and reception of satellite signals, the satellite signals are more easily limited by the terrain and the orbital motion of the satellite, and the situation that some satellites cannot receive signals easily occurs.
Based on the above problem, this embodiment further provides a preferred implementation scheme, where the antenna feedback module 13 is further connected to a plurality of remote receiving nodes, and the setting positions of the remote receiving nodes are different, so as to ensure that the communication between the measurement, operation and control integrated system and the satellite is not affected by the motion of the satellite to the greatest extent.
The application provides a survey, operation and control integration system will observe and control integrated circuit board 111, data pass integrated circuit board 112 and integrate together for can realize observing and controling and fortune controlling to the satellite through same equipment, and dispose and observe and control baseband 113 and data pass baseband 114 in order to cooperate the use. In addition, a switching module 115 is further arranged for switching the connection relationship between the board card and the baseband, so that the measurement, operation and control integrated system can switch the working mode into a low-speed measurement and control mode or a high-speed measurement and control mode according to the actual operation and control or the measurement and control requirement, and the measurement and control and operation and control integration of the satellite can be further guaranteed to be carried out by the same equipment. Meanwhile, the measurement, control and operation control are controlled by the station control module 12 in the measurement, operation and control integrated system, and management is more convenient compared with a separated mode, so that the method is suitable for the development trend that the number of satellites is increased and the complexity of constellation networking is improved nowadays, and is better applied to actual scenes.
In addition to the above-mentioned integrated system for measurement, operation and control provided by the embodiment, the present application also provides a satellite-to-ground communication method for the above-mentioned integrated system for measurement, operation and control, as shown in fig. 2, including:
s21: when receiving the satellite signal, determining whether the satellite working mode information is received in advance, if yes, going to step S22, if no, going to step S23.
The satellite working information mode information, namely the information for representing whether the satellite is in a low-speed measurement and control working mode or a high-speed operation and control working mode, can be input into the measurement, operation and control integrated system in advance by ground station management personnel.
Furthermore, when the working mode of the satellite at different time is preset in advance with the satellite, the information is input into the integrated system, and the time division control of the integrated system can be realized.
S22: and controlling the switching module to switch and connect the corresponding baseband according to the satellite working mode information.
S23: and acquiring a data frame header of the satellite signal, and controlling the switching module to switch and connect the corresponding baseband according to the data frame header.
The data frame header of the satellite signal comprises a pseudo code initial item used for indicating that the satellite is in a low-speed measurement control or high-speed operation control working mode.
It should be noted that the pseudo code is a language between a natural language and a programming language, which is artificially designed for convenience of description and understanding when the satellite and the ground station are in a non-coherent spread spectrum communication system.
Therefore, by inserting the pseudo code into the instruction, the system can be used for indicating whether the satellite sending the satellite signal is in a low-speed operation control working mode or a high-speed operation control working mode, the integrated system for operation control and measurement of the ground station can also know the working state of the satellite sending the signal, and then the switching module is controlled to switch the baseband, and the corresponding working mode is adopted to process the signal. In the mode, manual intervention is not needed, and the satellite working mode can be automatically identified and the working mode of the satellite can be automatically switched by the integrated measurement, operation and control system.
Furthermore, the pseudo code may further include information for characterizing the satellite, that is, it is determined by the initial term of the pseudo code that the satellite signal is transmitted by a specific one of the satellites.
The above embodiment is an explanation of a downlink in satellite-to-ground communication. For the uplink in the satellite-to-ground communication, this embodiment also provides a preferred implementation, as shown in fig. 3, the method further includes:
s31: pseudo-code initial terms are added to data frames of control commands to the satellite.
The control instruction comprises a pseudo code initial item, a satellite and a control object, wherein the pseudo code initial item and the satellite have a one-to-one correspondence relation and are used for representing the control object of the control instruction, and the control instruction is executed only when the satellite identifies that the control instruction comprises the corresponding pseudo code initial item.
In the above embodiments, it has been clearly described that the pseudo code is used as a language and may be used to represent a plurality of contents, so that whether the control instruction received by the satellite is directed to itself or not can be identified by the corresponding relationship between the pseudo code and the satellite, which is predetermined by each satellite. Furthermore, the satellite has a function of instruction identification, and when the received pseudo code initial item in the control instruction does not correspond to the satellite, the satellite does not execute the instruction, so that the interference on normal operation is avoided.
S32: control commands are broadcast to each satellite.
By means of the method, the satellite has the capability of identifying the object of the ground station sending instruction by means of presetting the corresponding relation between the pseudo code initial item and the satellite, so that when the ground station sends satellite signals, the satellite signals can be sent to all satellites (all satellites capable of receiving the ground station signals of the current position) in a broadcasting mode, directional sending of the instructions is not needed, and difficulty of signal sending is greatly reduced.
The application aims at the above measurement, operation and control integrated system, and provides a satellite-ground communication method, which can identify which satellite signal is transmitted by which satellite through a pseudo code initial item preset in a satellite signal transmitted by the satellite, and can also identify whether the working mode of the satellite is in low-speed measurement and control or high-speed operation and control, so that the measurement, operation and control integrated system can realize the switching of a baseband connected with a board card through a control switching module, realize the switching of the working mode, and further complete a corresponding measurement, control and control task or an operation and control task. Therefore, the integrated control of measurement and control and operation control is realized, the functions of the original two ground stations can be realized by one ground station, the number of the built ground stations is reduced, and the management difficulty of satellite measurement, operation and control is also reduced.
In addition, in practical application, there is a need for implementing a daily measurement, operation and control task for a satellite, where the daily task is less specific and usually needs to be performed by each satellite, so how to reasonably implement resource scheduling of measurement and control equipment by combining satellite-ground resource states to formulate a multi-satellite parallel measurement and control work plan becomes a problem to be solved urgently by those skilled in the art.
Based on the above problem, as shown in fig. 4, this example provides a preferred embodiment, and the method further includes:
s41: and calculating the task arc section parameters corresponding to each satellite according to the preset two-line number.
The task arc segment parameters comprise an entry time T1, an exit time T2, an arc segment time length T2-T1, a highest elevation angle alpha and a waiting time Tw required for starting a task.
The two-row root, also called two-row orbit root, is a set of parameters for describing the orbital motion state of the celestial body. Generally, the method refers to 6 parameters which are necessary for describing the celestial body moving along a conical curve by using the law of classical universal gravitation. And calculating the task arc segment parameters through two lines of numbers so as to carry out quantitative processing on the current satellite-ground resource state.
S42: and obtaining a weighted value corresponding to each satellite according to each group of task arc section parameters by a weighted arithmetic mean operator method.
Specifically, that is, the weight value is calculated by weighting the arc segment parameters of each task through a preconfigured weight value, and the setting of the weight value is determined according to actual needs, which is easily performed by a person skilled in the art, so that details are not described here in this embodiment, but a preferred embodiment is provided, that is, the weight value is calculated through the following formula:
K＝0.7×α+0.3×(T2-T1)
wherein K is also the weight value of a certain satellite.
It is easy to understand that not all task arcs are required for calculating the weighted values, or it can be understood that the weighted values of the task arc parameters not embodied in the above equations are 0.
Through the above formula, the satellite-ground resources of each satellite in the current state can be simply quantized, and the optimal satellite can be conveniently selected as the next target satellite to complete daily measurement and control tasks.
S43: and selecting the satellite corresponding to the maximum value in the weighted values as a target satellite for completing the daily measurement, operation and control tasks, and adding a pseudo code initial item corresponding to the target satellite in the control instruction.
As can be seen from the above, the weighted value K obtained in the above step is a quantization of satellite-ground resources in the current state of the satellite, that is, the satellite-ground resources of the satellite with the higher weighted value are better, that is, the satellite is the optimal satellite for realizing satellite-ground communication. In the above embodiment, it can be seen that, the corresponding pseudo code primitive is added to the transmitted command data frame, that is, the target of the command is designated as the determined target satellite.
S44: control commands are broadcast to each satellite.
Therefore, in the implementation of the daily measurement and control task, the selection of the satellite with the optimal satellite-ground resources and the transmission of the related instruction are completed through the above steps, and how to implement the instruction transmission of other satellites, this embodiment provides a further implementation scheme, and when inter-satellite communication exists between the satellites, the method further includes:
when an uplink command needs to be sent, a pseudo code initial item corresponding to the target satellite is added in a data frame of the uplink command.
And broadcasting the uplink instruction to each satellite so that the target satellite receives the uplink instruction and then transmits the uplink instruction to other satellites which are positioned on the same orbit plane or the same phase with the target satellite through inter-satellite communication.
To more clearly illustrate the command transmission process between the satellites, the following description is further provided with reference to fig. 5:
further calculating a weighted value of each satellite according to the task arc section parameters calculated by the two lines of numbers, and selecting the satellite with the largest weighted value as a target satellite, namely the satellite S0 in the figure 5; further, a satellite located on the left side of the same orbital plane as the target satellite S0 (relative to the left side in FIG. 5) is named SL1, SL2 \8230accordingto the distance from the target satellite
Only satellite SL1 is shown in fig. 5, but it is readily appreciated that SL2, SL3, etc. should also be present to the left of satellite SL 1.
Similarly, the satellites positioned on the right side of the same orbit plane of the target satellite S0 are named as SR1, SR2 \8230
Satellites located on the upper side of the same phase of the target satellite S0 are named SU1, SU2 \8230, \8230
The satellites positioned at the upper side of the same phase of the target satellite S0 are named as SD1, SD2, 8230, 8230
Namely, constellation networking formed by the whole satellite is marked, correspondingly, after the target satellite S0 receives an instruction for carrying out a daily measurement and control task, the instruction is respectively transmitted to the satellite SL1, the satellite SR1, the satellite SU1 and the satellite SD1 through inter-satellite communication, further, the SL1, the SR1, the SU1 and the SD1 are used as new main bodies, and then the instruction is transmitted to the satellites around the main bodies through inter-satellite communication, so that the transmission of the daily measurement and control task instruction to the whole constellation networking is completed.
It should be noted that, the above instruction sending mode is not limited to only completing the daily measurement and control task instruction, and may also be used for sending other instructions, which is not limited in this embodiment.
Similarly, if there is inter-satellite communication between satellites located on the same orbital plane or in the same phase, the same method can be adopted for each satellite to transmit signals to the ground, as shown in the following one embodiment:
when a downlink instruction is received, analyzing the downlink instruction to obtain a plurality of data frames comprising different pseudo code initial terms; the downlink instruction is obtained by integrating downlink data after the target satellite receives the downlink data sent by other satellites on the same orbital plane or the same phase through inter-satellite communication; and determining the satellite corresponding to each data frame according to the initial pseudo code.
That is, when each satellite needs to send data to the ground terminal, the data is sent to the target satellite determined through the above steps through inter-satellite communication, and after the target satellite receives the data sent by all satellites, the data is integrated and sent to the ground terminal together, that is, a downlink in the satellite-to-ground communication is realized.
In addition, it should be noted that no matter the corresponding relationship among the satellite working mode information, the pseudo code initial terms and the satellites, or the number of the two lines, a mode of pre-embedding the measurement, operation and control integrated system can be adopted, so as to achieve the purpose that the measurement, operation and control integrated system automatically completes corresponding functions without manual intervention, and the effect can be better embodied in the measurement and control task of the daily satellites.
According to the preferred scheme provided by the embodiment, the task arc section parameters of each satellite are calculated through two lines of numbers, and then a weighted value is calculated through a weighted average method and used for quantifying the satellite-ground resources of each satellite in the current state, so that the satellite-ground resource condition of each satellite is simply and scientifically known, and the optimal satellite is selected as the target satellite to better complete signal transmission. Furthermore, when inter-satellite communication exists between satellites, communication between the ground station and the constellation networking can be achieved through the determined target satellite, except that the inter-satellite communication can be achieved by fully utilizing the satellite-ground resources, signals sent by the ground end can be transmitted to the satellites which cannot be seen by the current ground end (namely, the satellites with which the ground end cannot directly transmit signals) by utilizing the inter-satellite communication, so that the influence of space factors on the satellite-ground communication is reduced, and the satellite-ground communication is better achieved.
In the foregoing embodiments, a satellite-to-ground communication method is described in detail, and the present application also provides a corresponding embodiment of a satellite-to-ground communication device. It should be noted that the present application describes the embodiments of the apparatus portion from two perspectives, one is from the perspective of the function module, and the other is from the perspective of the hardware.
Based on the angle of the function module, as shown in fig. 6, the present embodiment provides a satellite-ground communication device, including:
the judging module 51 is configured to judge whether satellite operating mode information is received in advance when a satellite signal is received, trigger the first switching module if the satellite operating mode information is received, and trigger the second switching module if the satellite operating mode information is not received;
the first switching module 52 is configured to control the switching module to switch and connect to a corresponding baseband according to the satellite operating mode information;
the second switching module 53 is configured to obtain a data frame header of the satellite signal, and control the switching module to switch and connect the corresponding baseband according to the data frame header; the data frame header of the satellite signal comprises a pseudo code initial item used for indicating that the satellite is in a low-speed measurement control or high-speed operation control working mode.
Preferably, the method further comprises the following steps:
the uplink module is used for adding a pseudo code initial item in a data frame of a control instruction sent to the satellite; the control instruction comprises pseudo code initial items, a satellite and a control object, wherein the pseudo code initial items and the satellite have a one-to-one correspondence relation and are used for representing the control object of the control instruction, and the control instruction is executed only when the satellite identifies that the control instruction comprises the corresponding pseudo code initial items; control commands are broadcast to each satellite.
The preferred transmission module is used for calculating a task arc section parameter corresponding to each satellite according to the preset two-line number; the task arc segment parameters comprise the entry time, the exit time, the arc segment duration, the highest elevation angle and the waiting time required for starting the task; obtaining a weighted value corresponding to each satellite according to each group of task arc section parameters by a weighted arithmetic mean operator method; selecting a satellite corresponding to the maximum value in the weighted values as a target satellite for completing a daily measurement, operation and control task, and adding a pseudo code initial item corresponding to the target satellite in a daily measurement, operation and control task instruction; control commands are broadcast to each satellite.
The first inter-satellite communication module is used for adding a pseudo code initial item corresponding to a target satellite in a data frame of an uplink instruction when the uplink instruction needs to be sent; and broadcasting the uplink command to each satellite so that the target satellite can transmit the uplink command to other satellites which are positioned on the same orbit plane or the same phase with the target satellite through inter-satellite communication after receiving the uplink command.
The second inter-satellite communication module is used for analyzing the downlink instruction to obtain a plurality of data frames comprising different pseudo code initial items when the downlink instruction is received; the downlink instruction is obtained by integrating downlink data after a target satellite receives the downlink data transmitted by other satellites on the same orbit plane or the same phase through inter-satellite communication; and determining the satellite corresponding to each data frame according to the initial pseudo code.
Since the embodiments of the apparatus portion and the method portion correspond to each other, please refer to the description of the embodiments of the method portion for the embodiments of the apparatus portion, which is not repeated here.
The embodiment provides a satellite-ground communication device, whether satellite working mode information exists in a measurement, operation and control integrated system is judged through a judgment module, if the satellite working mode information exists, the first switching module directly controls the switching module to switch the working mode of the measurement, operation and control integrated system according to the satellite working mode information, if the satellite working mode information does not exist, the second switching module identifies whether the working mode of a satellite is in low-speed measurement and control or high-speed operation and control according to a pseudo code initial item preset in a satellite signal sent by the satellite, and can also identify which satellite signal is sent by which satellite, and furthermore, the measurement, operation and control integrated system can realize switching of a baseband connected with a board card through the control switching module, so that the switching of the working modes is realized, and a corresponding measurement, control task or operation and control task is completed. Therefore, the integrated control of measurement and control and operation control is realized, the functions of the original two ground stations can be realized by one ground station, the number of the built ground stations is reduced, and the management difficulty of satellite measurement, operation and control is also reduced.
Fig. 7 is a structural diagram of a satellite-ground communication device according to another embodiment of the present application, and as shown in fig. 7, the satellite-ground communication device includes: a memory 60 for storing a computer program;
a processor 61, configured to execute the computer program to implement the steps of the satellite-to-ground communication method according to the above-mentioned embodiment.
The satellite-ground communication device provided by the embodiment can include, but is not limited to, an earth station, a measurement, operation and control integrated system, and the like.
The processor 61 may include one or more processing cores, such as a 4-core processor, an 8-core processor, and the like. The Processor 61 may be implemented in hardware using at least one of a Digital Signal Processor (DSP), a Field-Programmable Gate Array (FPGA), and a Programmable Logic Array (PLA). The processor 61 may also include a main processor and a coprocessor, where the main processor is a processor for Processing data in a wake state, and is also called a Central Processing Unit (CPU); a coprocessor is a low power processor for processing data in a standby state. In some embodiments, the processor 61 may be integrated with a Graphics Processing Unit (GPU) which is responsible for rendering and drawing the content required to be displayed by the display screen. In some embodiments, processor 61 may also include an Artificial Intelligence (AI) processor for processing computational operations related to machine learning.
Memory 60 may include one or more computer-readable storage media, which may be non-transitory. Memory 60 may also include high speed random access memory, as well as non-volatile memory, such as one or more magnetic disk storage devices, flash memory storage devices. In this embodiment, the memory 60 is at least used for storing a computer program 601, wherein the computer program is loaded and executed by the processor 61, and then the relevant steps of a satellite-ground communication method disclosed in any one of the foregoing embodiments can be implemented. In addition, the resources stored by the memory 60 may also include an operating system 602, data 603, and the like, and the storage may be transient storage or permanent storage. Operating system 602 may include Windows, unix, linux, etc., among others. Data 603 may include, but is not limited to, a satellite-to-ground communication method, and the like.
In some embodiments, a satellite-to-ground communication device may further include a display 62, an input/output interface 63, a communication interface 64, a power supply 65, and a communication bus 66.
Those skilled in the art will appreciate that the configuration shown in fig. 7 does not constitute a limitation of a satellite-to-ground communication device and may include more or fewer components than those shown.
The satellite-ground communication device provided by the embodiment of the application comprises a memory and a processor, wherein when the processor executes a program stored in the memory, the processor can realize the following method: a satellite-to-ground communication method.
The satellite-ground communication device provided by the embodiment executes a computer program stored in a memory through a processor to judge whether satellite working mode information exists in a measurement, operation and control integrated system, if so, a switching module is directly controlled to switch the working mode of the measurement, operation and control integrated system according to the satellite working mode information, if not, the satellite working mode is identified to be in low-speed measurement and control or high-speed operation and control according to a pseudo code initial item preset in a satellite signal sent by a satellite, and the satellite signal can also be identified to be sent by which satellite, so that the measurement, operation and control integrated system can realize the switching of a baseband connected with a board card through controlling the switching module, realize the switching of the working mode, and complete a corresponding measurement, control task or operation and control task. Therefore, the integrated control of measurement and control and operation control is realized, the functions of the original two ground stations can be realized by one ground station, the number of the built ground stations is reduced, and the management difficulty of satellite measurement, operation and control is also reduced.
Finally, the application also provides a corresponding embodiment of the computer readable storage medium. The computer-readable storage medium has stored thereon a computer program which, when being executed by a processor, carries out the steps as set forth in the above-mentioned method embodiments.
It is understood that, if the method in the above embodiments is implemented in the form of software functional units and sold or used as a stand-alone product, it can be stored in a computer readable storage medium. Based on such understanding, the technical solutions of the present application, which are essential or part of the prior art, or all or part of the technical solutions may be embodied in the form of a software product, which is stored in a storage medium and executes all or part of the steps of the methods described in the embodiments of the present application. 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, an optical disk, or other various media capable of storing program codes.
The present embodiment provides a computer readable storage medium, where when a stored computer program is executed, it may be implemented to determine whether satellite operating mode information exists in a measurement, operation, and control integrated system, if so, directly control a switching module to switch an operating mode of the measurement, operation, and control integrated system according to the satellite operating mode information, and if not, identify whether the operating mode of the satellite is in low-speed measurement and control or high-speed operation and control according to a pseudo code initial item preset in a satellite signal sent by the satellite, and also identify which satellite the satellite signal is sent by, so that the measurement, operation, and control integrated system may implement switching of a baseband connected to a board card by controlling the switching module, thereby implementing switching of the operating mode, and completing a corresponding measurement, control task or operation and control task. Therefore, the integrated control of measurement and control and operation control is realized, the functions of the original two ground stations can be realized by one ground station, the number of the built ground stations is reduced, and the management difficulty of satellite measurement, operation and control is also reduced.
The detailed description is given above to a measurement, operation and control integrated system, a satellite-to-ground communication method, a device and a medium provided by the present application. The embodiments are described in a progressive manner in the specification, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description. It should be noted that, for those skilled in the art, without departing from the principle of the present application, the present application can also make several improvements and modifications, and those improvements and modifications also fall into the protection scope of the claims of the present application.
It should also be noted that, in this specification, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising a," "8230," "8230," or "comprising" does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.
Claims (11)
1. A measurement, operation and control integrated system is characterized by comprising: the system comprises a measurement, operation and control module and a station control module;
the measurement, operation and control module is integrated with a measurement and control board card, a data transmission board card, a measurement and control baseband, a data transmission baseband and a switching module; the rate of the measurement and control baseband is lower than that of the data transmission baseband;
the measurement and control board card and the data transmission board card are respectively connected with the antenna feedback module through channel equipment and are used for receiving or sending satellite signals and processing the satellite signals;
the measurement and control board card and the data transmission board card are connected with the measurement and control baseband and the data transmission baseband through the switching module, and the switching module is used for switching the connection between the measurement and control board card and the data transmission board card and the measurement and control baseband or the data transmission baseband;
the station control module is connected with the switching module and is used for controlling the switching module to realize a switching function.
2. The integrated measurement, operation and control system according to claim 1, further comprising a plurality of remote receiving nodes connected to the antenna feeding module, wherein the remote receiving nodes are disposed at different positions.
3. A satellite-ground communication method is characterized by being applied to a measurement, operation and control integrated system comprising a measurement, operation and control module and a station control module, wherein the measurement, operation and control module is integrated with a measurement and control board card, a data transmission board card, a measurement and control baseband, a data transmission baseband and a switching module; the rate of the measurement and control baseband is lower than that of the data transmission baseband; the measurement and control board card and the data transmission board card are respectively connected with the antenna feedback module through channel equipment and are used for receiving or sending satellite signals and processing the satellite signals; the measurement and control board card and the data transmission board card are connected with the measurement and control baseband and the data transmission baseband through the switching module, and the switching module is used for switching the connection between the measurement and control board card and the data transmission board card and the measurement and control baseband or the data transmission baseband; the station control module is connected with the switching module and is used for controlling the switching module to realize a switching function; the method comprises the following steps:
when the satellite signal is received, judging whether satellite working mode information is received in advance;
if yes, controlling the switching module to switch and connect the corresponding baseband according to the satellite working mode information;
if not, acquiring a data frame header of the satellite signal, and controlling the switching module to switch and connect a corresponding baseband according to the data frame header; the data frame header of the satellite signal comprises a pseudo code initial item used for indicating that the satellite is in a low-speed measurement and control or high-speed operation and control working mode.
4. The satellite-to-ground communication method according to claim 3, further comprising:
adding the pseudo code initial item in a data frame of a control instruction sent to a satellite; the control instruction comprises pseudo code initial items, wherein one-to-one correspondence exists between the pseudo code initial items and a satellite, the pseudo code initial items are used for representing a control object of the control instruction, and the control instruction is executed only when the satellite identifies that the control instruction comprises the corresponding pseudo code initial items;
broadcasting the control instructions to each satellite.
5. The satellite-to-ground communication method according to claim 3, further comprising:
calculating a task arc section parameter corresponding to each satellite according to a preset number of two lines; the task arc segment parameters comprise the entry time, the exit time, the arc segment duration, the highest elevation angle and the waiting time required for starting the task;
obtaining a weighted value corresponding to each satellite according to each group of task arc segment parameters by a weighted arithmetic mean operator method;
selecting a satellite corresponding to the maximum value in the weighted values as a target satellite for completing daily measurement, operation and control tasks, and adding the pseudo code initial item corresponding to the target satellite in the control instruction;
broadcasting the control instructions to each satellite.
6. The satellite-to-ground communication method according to claim 5, wherein there is inter-satellite communication between satellites located in the same orbital plane or in the same phase, further comprising:
when an uplink instruction needs to be sent, adding the pseudo code initial item corresponding to the target satellite in a data frame of the uplink instruction;
and broadcasting the uplink instruction to each satellite so that the target satellite can send the uplink instruction to other satellites which are positioned on the same orbital plane or the same phase as the target satellite through inter-satellite communication after receiving the uplink instruction.
7. The satellite-to-ground communication method according to claim 5, wherein there is inter-satellite communication between satellites located in the same orbital plane or in the same phase, further comprising:
when a downlink instruction is received, analyzing the downlink instruction to obtain a plurality of data frames comprising different pseudo code initial terms; the downlink instruction is obtained by integrating downlink data sent by other satellites on the same orbital plane or the same phase through inter-satellite communication after the target satellite receives the downlink data;
and determining the satellite corresponding to each data frame according to the pseudo code initial item.
8. The method of any one of claims 5 to 7, wherein said deriving a weight value for each satellite from each set of said mission arc parameters by a weighted arithmetic mean operator method comprises:
obtaining the weighted value corresponding to each satellite according to each group of the task arc section parameters through a first formula;
the first formula includes:
K＝0.7×α+0.3×(T2-T1)
wherein K is the weighted value, α is the highest elevation angle, T1 is the entry time, T2 is the exit time, and T2-T1 is the arc segment duration.
9. A satellite-to-ground communication device, comprising:
the judging module is used for judging whether satellite working mode information is received in advance or not when the satellite signal is received, if so, the first switching module is triggered, and if not, the second switching module is triggered;
the first switching module is used for controlling the switching module to switch and connect the corresponding baseband according to the satellite working mode information;
the second switching module is used for acquiring a data frame header of the satellite signal and controlling the switching module to switch and connect a corresponding baseband according to the data frame header; the data frame header of the satellite signal comprises a pseudo code initial item used for indicating that the satellite is in a low-speed measurement control or high-speed operation control working mode.
10. A satellite-to-ground communication device, comprising:
a memory for storing a computer program;
processor for implementing the steps of the satellite-to-ground communication method according to any one of claims 3 to 8 when executing said computer program.
11. A computer-readable storage medium, characterized in that a computer program is stored on the computer-readable storage medium, which computer program, when being executed by a processor, carries out the steps of the satellite-to-ground communication method according to any one of claims 3 to 8.
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