CN115396013A - Measurement, operation and control integrated system, satellite-to-ground communication method, device and medium - Google Patents

Abstract

This application discloses a measurement, operation and control integrated system, satellite-ground communication method, device and medium, which relate to the field of satellite communication technology and are used to realize satellite measurement and control, operation and control management, etc., aiming at the current measurement and control, operation and control separation mode It is difficult to adapt to the management requirements of future constellation measurement, operation and control. An integrated system of measurement, operation and control is provided, which integrates the original measurement and control boards and digital transmission boards used to realize satellite measurement and control and satellite operation and control tasks respectively. Together, and through the switching module to control whether the baseband connected to the board is the measurement and control baseband or the digital transmission baseband, so as to complete the integration of the measurement and control and operation control modes of the ground station, and realize that a set of equipment can complete the original two work centers. The function reduces the number and cost of ground station construction, and it is also more convenient for unified scheduling of satellite measurement and control and operation control.

Description

An integrated system of measurement, operation and control, satellite-ground communication method, device and medium

technical field

The present application relates to the technical field of satellite communication, in particular to an integrated system of measurement, operation and control, a satellite-ground communication method, device and medium.

Background technique

As the number of commercial micro-satellites continues to increase and the complexity of the constellation network becomes higher, the traditional model based on the measurement and control center + operation control center has been difficult to meet the management requirements of future constellation measurement, operation and control. The traditional separation mode of measurement and control and operation and control provides the measurement and control center with satellite telemetry, remote control, life status monitoring and other functions. The operation and control center puts forward the operation and control requirements for business data, and completes tasks such as task planning, task monitoring, and inter-satellite communication management. . The task is only sent to the measurement and control center, which is only used as a data channel, and the business data is still processed by the operation and control center. In this existing mode, the satellite also has two working modes, which are low-speed measurement and control mode and high-speed operation and control mode, corresponding to different frequency bands.

This mode results in short satellite communication time and long revisit period. In view of the unique operation mode of commercial satellites and the urgent need to reduce costs and increase efficiency, it is necessary to improve the efficiency of on-orbit operation management of commercial satellites and reduce the cost of satellite on-orbit management. It is necessary to build a ground measurement, operation and control integrated system. Under the condition of a ground system, it can realize the measurement and control, operation and control management of multiple low-orbit commercial satellites, complete the analysis, processing, and storage of satellite telemetry data and business data in real time, and adapt to the reality of multiple satellites, multiple systems, and multiple working modes Require.

Therefore, technicians in this field urgently need an integrated system of measurement, operation and control to solve the problem that the current mode of measurement and control center + operation and control center is difficult to adapt to the management needs of measurement, operation and control of future constellations.

Contents of the invention

The purpose of this application is to provide an integrated system of measurement, operation and control, satellite-ground communication method, device and medium, to solve the problem that the current mode of measurement and control center + operation and control center is difficult to meet the needs of measurement, operation and control management of future constellations.

In order to solve the above technical problems, this application provides an integrated measurement, operation and control system, including: a measurement, operation and control module and a station control module;

The measurement, operation and control module integrates a measurement and control board, a data transmission board, a measurement and control baseband, a data transmission baseband and a switching module; among them, the rate of the measurement and control baseband is lower than that of the data transmission baseband;

The measurement and control board and the data transmission board are respectively connected to the antenna feed module through the channel equipment, and are used to receive or send satellite signals;

The measurement and control board and the digital transmission board are connected to the measurement and control baseband and the digital transmission baseband through the switching module, and the switching module is used to switch the measurement and control board and the digital transmission board to connect the measurement and control baseband or the digital transmission baseband;

The station control module is connected with the switch module, and is used to control the switch module to realize the switch function.

Preferably, it also includes a plurality of remote receiving nodes connected to the antenna feed module, and the setting positions of each remote receiving node are different.

In order to solve the above technical problems, this application also provides a satellite-ground communication method, which is applied to an integrated system of measurement, operation and control including a measurement and operation control module and a station control module, wherein the measurement and operation control module is integrated with a measurement and control board and a data transmission board card, measurement and control baseband, data transmission baseband and switching module; among them, the rate of measurement and control baseband is lower than the data transmission baseband; the measurement and control board and the data transmission board are respectively connected to the antenna feed module through the channel equipment, and are used to receive or send satellite signals The measurement and control board and the digital transmission board are connected to the measurement and control baseband and the digital transmission baseband through the switching module, and the switching module is used to switch the measurement and control board and the digital transmission board to connect the measurement and control baseband or the digital transmission baseband; the station control module is connected to the switching module , used to implement the control switching module to realize the switching function; the method includes:

When a satellite signal is received, it is judged whether the satellite working mode information is received in advance;

If so, control the switching module to switch the baseband corresponding to the connection according to the satellite working mode information;

If not, the data frame header of the satellite signal is obtained, and the switching module is controlled to switch the corresponding baseband according to the data frame header; wherein, the data frame header of the satellite signal includes a pseudo signal used to indicate that the satellite is in low-speed measurement and control or high-speed operation and control mode Code initial item.

Preferably, it also includes:

Add the initial item of the pseudo code to the data frame of the control command sent to the satellite; among them, there is a one-to-one correspondence between the initial item of the pseudo code and the satellite, which is used to represent the control object of the control command, and only when the satellite recognizes the control command When the corresponding pseudo-code initial item is included, the control instruction is executed;

Broadcast control commands to each satellite.

Preferably, it also includes:

Calculate the mission arc parameters corresponding to each satellite according to the preset two-line root number; among them, the mission arc parameters include entry time, exit time, arc duration, maximum elevation angle and waiting time for mission start;

The weighted value corresponding to each satellite is obtained according to the parameters of each group of task arcs through the weighted arithmetic mean operator method;

Select the satellite corresponding to the maximum value of the weighted value as the target satellite to complete the daily measurement, operation and control task, and add the initial item of the pseudo code corresponding to the target satellite in the control command;

Broadcast control commands to each satellite.

Preferably, there is inter-satellite communication between satellites located on the same orbital plane or at the same phase, which also includes:

When it is necessary to send an uplink command, add the pseudocode initial item corresponding to the target satellite in the data frame of the uplink command;

The uplink command is broadcast to each satellite, so that after the target satellite receives the uplink command, it can send the uplink command to other satellites on the same orbital plane or phase as the target satellite through inter-satellite communication.

Preferably, there is inter-satellite communication between satellites located on the same orbital plane or at the same phase, which also includes:

When the downlink command is received, the downlink command is parsed to obtain a plurality of data frames including different pseudocode initial items; wherein, the downlink command is sent by the target satellite through inter-satellite communication after being received by other satellites on the same orbital plane or the same phase After the downlink data of , it is obtained by integrating the downlink data;

Determine the satellite corresponding to each data frame according to the pseudocode initial item.

Preferably, the weighted value corresponding to each satellite is obtained according to each group of task arc parameters through the weighted arithmetic mean operator method including:

The weighted value corresponding to each satellite is obtained according to the parameters of each group of task arcs through the first formula;

The first formula consists of:

K=0.7×α+0.3×(T2-T1)

Among them, 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 length.

In order to solve the above technical problems, the present application also provides a satellite-ground communication device, including:

The judging module is used for judging whether the satellite working mode information has been received in advance when the satellite signal is received, if so, triggering the first switching module, otherwise triggering the second switching module;

The first switching module is used to control the switching module to switch the baseband corresponding to the connection according to the satellite working mode information;

The second switching module is used to obtain the 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; wherein, the data frame header of the satellite signal includes information used to indicate that the satellite is in low-speed measurement and control or high-speed operation and control work Pseudo-code initial entry for the pattern.

Preferably, it also includes:

The uplink module is used to add the initial item of the pseudo code in the data frame of the control command sent to the satellite; wherein, there is a one-to-one correspondence between the initial item of the pseudo code and the satellite, and is used to represent the control object of the control command, only When the satellite recognizes that the control command contains the corresponding pseudo code initial item, execute the control command; broadcast the control command to each satellite.

The optimal transmission module is used to calculate the corresponding task arc parameters of each satellite according to the preset two-line root number; wherein, the task arc segment parameters include entry time, exit time, arc duration, maximum elevation angle and task start waiting time ; The weighted value corresponding to each satellite is obtained according to the parameters of each group of task arcs through the weighted arithmetic mean operator method; the satellite corresponding to the maximum value of the weighted value is selected as the target satellite for completing the daily measurement, operation and control task, and is The initial item of the pseudocode corresponding to the target satellite is added to the measurement, operation and control task instruction; the control instruction is broadcast to each satellite.

The first inter-satellite communication module is used to add the pseudo code initial item corresponding to the target satellite in the data frame of the uplink command when it is necessary to send the uplink command; broadcast the uplink command to each satellite, so that the target satellite receives the uplink command After that, the uplink command is sent to other satellites on the same orbital plane or phase as the target satellite through inter-satellite communication.

The second inter-satellite communication module is used to parse the downlink instructions to obtain a plurality of data frames comprising different pseudocode initial items when receiving the downlink instructions; After the downlink data sent by other satellites in the phase through inter-satellite communication, the downlink data is integrated; the satellite corresponding to each data frame is determined according to the initial item of the pseudo code.

In order to solve the above technical problems, the present application also provides a satellite-ground communication device, including:

memory for storing computer programs;

The processor is used for implementing the steps of the above-mentioned satellite-to-earth communication method when executing the computer program.

In order to solve the above technical problems, the present application also provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the steps of the above-mentioned satellite-to-earth communication method are realized.

The integrated measurement, operation and control system provided by this application integrates the original measurement and control boards and digital transmission boards used to realize satellite measurement and control and satellite operation and control tasks respectively, and is equipped with corresponding basebands. Due to the completion of measurement and control The rate of the baseband used by the task and the operation and control task is different, so the measurement and control board and the digital transmission board cannot use the same baseband. This application controls whether the baseband connected to the board is the measurement and control baseband or the digital transmission baseband by switching the module. Specifically, the switching module is controlled by the station control module. When the station control module judges that the measurement and control task needs to be performed, the switching module is controlled to connect the measurement and control baseband to the measurement and control board to complete the measurement and control task. When the station control module determines that the operation and control task needs to be performed During the task, the switching module is controlled to connect the digital transmission baseband with the digital transmission board to complete the measurement and control task, so as to realize the integration of ground station measurement and control and operation control modes, and realize the realization of what the original two work centers can achieve by one set of equipment The function reduces the number and cost of ground station construction, and it is also more convenient for unified scheduling of satellite measurement and control and operation control.

The satellite-ground communication method, device, and computer-readable storage medium provided by the present application correspond to the above-mentioned integrated measurement, operation and control system, and the effect is the same as above.

Description of drawings

In order to illustrate the embodiments of the present application more clearly, the following will briefly introduce the accompanying drawings used in the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present application. As far as people are concerned, other drawings can also be obtained based on these drawings on the premise of not paying creative work.

Fig. 1 is a structural diagram of an integrated measurement, operation and control system provided by the present invention;

Fig. 2 is a flow chart of a satellite-ground communication method for receiving signals provided by the present invention;

Fig. 3 is a flow chart of a satellite-ground communication method for sending signals provided by the present invention;

Fig. 4 is the flow chart of a kind of satellite preferred satellite ground communication method provided by the present invention;

FIG. 5 is a schematic structural diagram of a constellation network provided by the present invention;

FIG. 6 is a structural diagram of an inter-satellite communication device provided by the present invention;

FIG. 7 is a structural diagram of another inter-satellite communication device provided by the present invention.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of this application.

The core of the present application is to provide an integrated measurement, operation and control system, a satellite-to-earth communication method, device and medium.

In order to enable those skilled in the art to better understand the solution of the present application, the present application will be further described in detail below in conjunction with the drawings and specific implementation methods.

At present, in the communication structure between the ground station and the satellite, the ground station adopts the structure of separation of measurement and control and operation and control, and realizes the measurement and control task and the operation and control task of the satellite respectively. However, with the continuous increase in the number of satellites and the continuous improvement of the complexity of the constellation network, this structure of separation of measurement and control and operation and control is increasingly unable to meet the management needs of measurement, operation and control, so those skilled in the art urgently need a measurement and control The integrated system of operation and control can realize two tasks of satellite measurement and control and operation and control by one ground station, so as to facilitate management.

Based on the above problems, as shown in Figure 1, the present application provides an integrated system for measurement, operation and control, including: a measurement, operation and control module 11 and a station control module 12;

The measurement and control module integrates a measurement and control board 111, a data transmission board 112, a measurement and control baseband 113, a data transmission baseband 114, and a switching module 115; wherein, the measurement and control baseband 113 has a lower rate than the data transmission baseband 114;

The measurement and control board 111 and the data transmission board 112 are respectively connected to the antenna feed module 13 through the channel device 14, and are used to receive or send satellite signals and process them;

The measurement and control board 111 and the digital transmission board 112 are connected to the measurement and control baseband 113 and the digital transmission baseband 114 through the switching module 115, and the switching module 115 is used to switch the measurement and control board 111 and the digital transmission board 112 to connect to the measurement and control baseband 113 or the digital transmission baseband 114;

The station control module 12 is connected with the switching module 115 for controlling the switching module 115 to realize the switching function.

It is easy to know that, in terms of a complete integrated system of measurement, operation and control that can independently realize functions, the above-mentioned measurement, operation and control module 11 and station control module 12 are removed, as shown in Figure 1, and the antenna feeder is also included. Module 13, channel equipment 14, equipment guarantee module 15 and other devices.

Among them, the antenna feed is the collective name of antenna, servo, and feed source. The antenna feed module 13 is used to realize the communication between the ground station and the satellite, that is, to realize the transmission and reception of satellite signals; the channel device 14 is the satellite signal in the measurement The transmission channel in the integrated system of operation and control; the equipment guarantee module 15 is used to guarantee the power and network of all equipment in the integrated system of measurement, operation and control, so as to ensure the normal operation of the integrated system of measurement, operation and control.

It should also be noted that the switching module 115 provided in this application is used to switch the connection relationship between the baseband connected to the measurement and control board 111 and the digital transmission board 112, whether it is the measurement and control baseband 113 or the digital transmission baseband 114. , can be realized by devices with gating functions such as single-pole double-throw switches and multiplexers. Those skilled in the art can easily select a suitable implementation mode of the switch according to the actual engineering situation, so this application will not repeat them here. In addition The present application does not limit the switch to only a few implementations of the above examples.

In addition, it needs to be explained that this embodiment integrates the existing separate measurement and control and operation control workstations into an integrated measurement and operation control system to facilitate the management of satellite measurement and control and operation and control tasks. However, in this In the application scenario, the number of ground stations that establish a communication relationship with the satellite is reduced from two to one. In the transmission and reception of satellite signals, it is more likely to be restricted by terrain and satellite orbital movement, and it is prone to situations where some satellites cannot receive signals. Appear.

Based on the above problems, this embodiment also provides a preferred implementation solution. The above-mentioned antenna feed module 13 is also connected to multiple remote receiving nodes, and the setting positions of each remote receiving nodes are different, so as to ensure the maximum The communication between the integrated operation and control system and the satellite is not affected by the movement of the satellite.

An integrated measurement, operation and control system provided by this application integrates the measurement and control board 111 and the digital transmission board 112 together, so that the measurement, control and operation of satellites can be realized through the same device, and is equipped with a measurement and control baseband 113 and digital transmission baseband 114 to cooperate with use. In addition, a switching module 115 is also provided to switch the connection relationship between the board and the baseband, so that the integrated system of measurement, operation and control can switch the working mode to low-speed measurement and control mode or high-speed operation and control according to the actual operation and control or the needs of measurement and control. There are two modes to further ensure that the same equipment can take into account the integration of satellite measurement and control and operation control. At the same time, the above-mentioned measurement and control and operation control are all controlled by the station control module 12 in the measurement, operation and control integrated system, which is easier to manage than the separated mode, so as to meet the development trend of the increasing number of satellites and the increasing complexity of constellation networking , which is better applied in practical scenarios.

In addition to the integrated measurement, operation and control system provided in the above-mentioned embodiments, the present application also provides a satellite-ground communication method for the above-mentioned integrated measurement, operation and control system, as shown in Figure 2, including:

S21: When the satellite signal is received, judge whether the satellite working mode information has been received in advance, if yes, go to step S22, if not, go to step S23.

The satellite working information mode information, that is, the information representing whether the satellite is in the low-speed measurement and control working mode or the high-speed operation and control working mode, can be pre-input into the measurement, operation and control integrated system by the ground station management personnel.

Furthermore, when the working mode of the satellite at different times is predetermined in advance with the satellite, this part of information is input into the integrated measurement, operation and control system, and the time-division control of the integrated measurement, operation and control system can be realized.

S22: Control the switching module to switch the baseband corresponding to the connection according to the satellite working mode information.

S23: Obtain the data frame header of the satellite signal, and control the switching module to switch the corresponding baseband according to the data frame header.

Wherein, the data frame header of the satellite signal includes a pseudocode initial item used to indicate that the satellite is in a low-speed measurement and control or high-speed operation and control mode.

What needs to be explained is that the pseudo code is a language between natural language and programming language that is artificially designed for the convenience of description and understanding and is used when the satellite and the ground station are in the non-coherent spread spectrum communication system. .

Therefore, by inserting the pseudo code in the command, it can be used to indicate whether the satellite sending the satellite signal is in the low-speed measurement and control mode or the high-speed operation and control mode. The working state, and then control the switching module to switch the baseband, and use the corresponding working mode to process the signal. This method does not require manual intervention, and the integrated system of measurement, operation and control can automatically realize the identification of the satellite working mode and the switching of its own working mode.

Further, the pseudocode may also include information used to characterize the satellite, that is, the initial item of the pseudocode determines that the satellite signal is sent by a specific satellite.

The above embodiments are descriptions for the downlink in satellite-to-earth communication. For the uplink in satellite-ground communication, this embodiment also provides a preferred implementation solution, as shown in Figure 3, the above method also includes:

S31: Add a pseudo code initial item in the data frame of the control command sent to the satellite.

Among them, there is a one-to-one correspondence between the pseudocode initial item and the satellite, which is used to represent the control object of the control instruction, and the satellite executes the control instruction only when it recognizes that the control instruction contains the corresponding pseudocode initial item.

It has been clearly explained in the above-mentioned embodiments that the pseudocode, as a language, can be used to express various contents, so the satellite can identify the received Controls whether the instruction is directed at itself. Furthermore, the satellite has the function of command recognition. When the initial item of the pseudo code in the received control command does not correspond to itself, the satellite will not execute the command to avoid interference with normal operation.

S32: broadcast the control instruction to each satellite.

From the above, it can be known that by pre-agreement on the correspondence between the initial item of the pseudo code and the satellite, the satellite has the ability to identify the object of the command sent by the ground station, so that when the ground station sends the satellite signal, it can be broadcast to all satellites (All satellites that can receive the signal of the ground station at the current position), without the need for directional transmission of instructions, greatly reducing the difficulty of signal transmission.

This application aims at the above-mentioned integrated system of measurement, operation and control, and provides a satellite-ground communication method, which can identify which satellite the satellite signal is sent by using the initial pseudo-code preset in the satellite signal sent by the satellite, or Identify whether the working mode of the satellite is in low-speed measurement and control or high-speed operation and control, and then the measurement, operation and control integrated system can realize the switching of the baseband connected to the board through the control switching module, realize the switching of the working mode, and then complete the corresponding measurement and control tasks or control tasks. In this way, the integrated control of measurement, control and operation control is realized, and the functions of the original two ground stations can be realized by one ground station, which reduces the number of ground stations and reduces the management difficulty of satellite measurement, operation and control.

In addition, in practical applications, there is also a need for satellites to achieve daily measurement, operation and control tasks. This daily task is less specialized and is usually required for each satellite. Then, how to reasonably combine the status of satellite-ground resources Realizing resource scheduling of measurement and control equipment to formulate multi-satellite parallel measurement and control work plan has become another problem to be solved urgently by those skilled in the art.

Based on the above problems, as shown in Figure 4, this embodiment provides a preferred implementation, the method also includes:

S41: Calculate the mission arc parameters corresponding to each satellite according to the preset two-line root number.

Wherein, the mission arc parameters include entry time T1, exit time T2, arc duration T2-T1, highest elevation angle α, and task start waiting time Tw.

Two-line radicals, also known as two-line orbital radicals, are a set of parameters used to describe the state of celestial bodies in their orbits. Usually, it refers to the six parameters necessary to describe the movement of celestial bodies according to the conic curve by the classical law of universal gravitation. Calculate the above-mentioned task arc parameters through the two-line root number, so as to perform a quantitative processing on the current star-earth resource status.

S42: Obtain a weighted value corresponding to each satellite according to each group of mission arc parameters by means of a weighted arithmetic mean operator method.

Specifically, weighted calculations are performed on the above-mentioned task arc parameters through pre-configured weights, and the setting of the weights should be determined according to actual needs, which is easily done by those skilled in the art, so this embodiment I won’t go into details here, but provide a more preferred implementation mode, that is, calculate the weighted value by the following formula:

K=0.7×α+0.3×(T2-T1)

Wherein, K is also the weighted value of a certain satellite.

It is easy to understand that the calculation of the weighted value is not required for all the task arcs, or it can be understood that the weight value of the parameters of the task arcs not reflected in the above formula is 0.

Through the above calculation formula, the satellite-earth resources in the current state of each satellite can be simply quantified, and then the optimal satellite can be conveniently selected as the next target satellite to complete the daily measurement and control tasks.

S43: Select the satellite corresponding to the maximum value of the weighted value as the target satellite for completing the daily measurement, operation and control task, and add a pseudo code initial item corresponding to the target satellite to the control instruction.

It can be seen from the above that the weighted value K obtained in the above steps is the quantification of the satellite-ground resources in the current state of the satellite, that is, the satellite-ground resources of the satellite with a higher corresponding weight value are better, that is, the optimal satellite-ground communication is realized. satellite. According to the above embodiment, it can be seen that the initial item of pseudo-code corresponding to the transmitted instruction data frame is added, that is, the object of the instruction is designated as the above-mentioned determined target satellite.

S44: broadcast the control instruction to each satellite.

So far, through the above steps, the selection of the satellite with the best satellite-earth resources and the sending of related commands in the daily measurement and control tasks have been completed. Then, how to realize the sending of commands from other satellites, this embodiment provides a further implementation plan , when there is inter-satellite communication between the satellites, the above method also includes:

When an uplink command needs to be sent, an initial pseudo code item corresponding to the target satellite is added to the data frame of the uplink command.

The uplink command is broadcast to each satellite, so that after the target satellite receives the uplink command, it can send the uplink command to other satellites on the same orbital plane or phase as the target satellite through inter-satellite communication.

In order to more clearly illustrate the command transmission process of the inter-satellite communication between the above-mentioned satellites, the following will be further explained in conjunction with Figure 5:

The weighted value of each satellite is further calculated through the parameters of the mission arc calculated by the above two lines of roots, and the satellite with the largest weighted value is selected as the target satellite, that is, satellite S0 in Figure 5; further, the satellite located at the target The satellites on the left side of the same orbital plane of satellite S0 (relative to the left side in Figure 5) are named SL1, SL2...

Only the satellite SL1 is shown in FIG. 5 , but it is easy to know that there should be SL2 , SL3 , etc. on the left side of the satellite SL1 .

Similarly, the satellites located on the right side of the same orbital plane of the target satellite S0 are named SR1, SR2...

The satellites located on the upper side of the same phase of the target satellite S0 are named SU1, SU2...

The satellites located on the upper side of the same phase of the target satellite S0 are named SD1, SD2...

That is to say, the constellation network composed of the entire satellite is marked, and correspondingly, when the target satellite S0 receives the instructions for daily measurement and control tasks, it transmits them to satellite SL1, satellite SR1, satellite SU1 and satellite respectively through inter-satellite communication. Satellite SD1, furthermore, SL1, SR1, SU1 and SD1 are used as new subjects, and then transmit commands to satellites around them through inter-satellite communication, so as to complete the sending of daily measurement and control task commands to the entire constellation network.

It should be noted that, the above-mentioned command sending mode is not limited to the completion of daily measurement and control task commands, but can also be used for sending other commands, which is not limited in this embodiment.

Similarly, for each satellite to send signals to the ground terminal, if there is inter-satellite communication between satellites located on the same orbital plane or at the same phase, the same method can also be adopted, as shown in the following embodiment:

When the downlink command is received, the downlink command is parsed to obtain a plurality of data frames including different pseudocode initial items; wherein, the downlink command is sent by the target satellite through inter-satellite communication after being received by other satellites on the same orbital plane or the same phase After the downlink data, it is obtained by integrating the downlink data; the satellite corresponding to each data frame is determined according to the initial item of the pseudo code.

That is, when each satellite needs to send data to the ground terminal, it first sends the data to the target satellite determined through the above steps through inter-satellite communication. After the target satellite receives the data sent by all satellites, it integrates the above data, It is also sent to the ground terminal, that is, to realize the downlink in satellite-ground communication.

In addition, it needs to be explained that whether it is the above-mentioned satellite working mode information, the corresponding relationship between the pseudocode initial item and each satellite, or the number of two lines, it can be pre-embedded into the integrated measurement, operation and control system. In order to realize the purpose of the measurement, operation and control integrated system to automatically complete the corresponding functions without manual intervention, this effect can be better reflected in the daily satellite measurement and control tasks.

The preferred solution provided by this embodiment calculates the mission arc parameters of each satellite through two rows of roots, and then calculates a weighted value through the method of weighted average, which is used to quantify the satellite-ground resources of each satellite in the current state, so that Simply and scientifically know the satellite-ground resources of each satellite, and select the optimal satellite as the target satellite to better complete signal transmission. Furthermore, when there is inter-satellite communication between satellites, the communication between the ground station and the constellation network can also be realized through the above-mentioned determined target satellites. In addition to making full use of satellite-ground resources to complete satellite-ground communication, it can also The use of inter-satellite communication enables the transmission of signals sent by the ground terminal to satellites that cannot be seen by the ground terminal (that is, satellites that the ground terminal cannot directly transmit signals to), thereby reducing the impact of space factors on satellite-ground communication, and more Complete the star-to-earth communication well.

In the foregoing embodiments, a satellite-ground communication method is described in detail, and the present application also provides a corresponding embodiment of a satellite-ground communication device. It should be noted that this application describes the embodiments of the device part from two perspectives, one is based on the perspective of functional modules, and the other is based on the perspective of hardware.

Based on the perspective of functional modules, as shown in Figure 6, this embodiment provides a satellite-to-earth communication device, including:

Judgment module 51, for when receiving satellite signal, judge whether to receive satellite working mode information in advance, if so then trigger the first switching module, if otherwise trigger the second switching module;

The first switching module 52 is used to control the switching module to switch the baseband corresponding to the connection according to the satellite working mode information;

The second switching module 53 is used to obtain the data frame header of the satellite signal, and controls the switching module to switch and connect the corresponding baseband according to the data frame header; wherein, the data frame header of the satellite signal includes a signal used to indicate that the satellite is in low-speed measurement and control or high-speed operation and control Pseudocode initial entry for working mode.

Preferably, it also includes:

The uplink module is used to add the initial item of the pseudo code in the data frame of the control command sent to the satellite; wherein, there is a one-to-one correspondence between the initial item of the pseudo code and the satellite, and is used to represent the control object of the control command, only When the satellite recognizes that the control command contains the corresponding pseudo code initial item, execute the control command; broadcast the control command to each satellite.

The optimal transmission module is used to calculate the corresponding task arc parameters of each satellite according to the preset two-line root number; wherein, the task arc segment parameters include entry time, exit time, arc duration, maximum elevation angle and task start waiting time ; The weighted value corresponding to each satellite is obtained according to the parameters of each group of task arcs through the weighted arithmetic mean operator method; the satellite corresponding to the maximum value of the weighted value is selected as the target satellite for completing the daily measurement, operation and control task, and is The initial item of the pseudocode corresponding to the target satellite is added to the measurement, operation and control task instruction; the control instruction is broadcast to each satellite.

The first inter-satellite communication module is used to add the pseudo code initial item corresponding to the target satellite in the data frame of the uplink command when it is necessary to send the uplink command; broadcast the uplink command to each satellite, so that the target satellite receives the uplink command After that, the uplink command is sent to other satellites on the same orbital plane or phase as the target satellite through inter-satellite communication.

The second inter-satellite communication module is used to parse the downlink instructions to obtain a plurality of data frames comprising different pseudocode initial items when receiving the downlink instructions; After the downlink data sent by other satellites in the phase through inter-satellite communication, the downlink data is integrated; the satellite corresponding to each data frame is determined according to the initial item of the pseudo code.

Since the embodiment of the device part corresponds to the embodiment of the method part, please refer to the description of the embodiment of the method part for the embodiment of the device part, and details will not be repeated here.

The satellite-ground communication device provided in this embodiment judges whether there is satellite working mode information in the measurement, operation and control integrated system through the judging module. If the operating mode of the integrated system of operation and control does not exist, then through the second switching module, according to the initial item of the pseudo-code preset in the satellite signal sent by the satellite, it is recognized whether the operating mode of the satellite is in low-speed measurement and control or high-speed operation and control, It can also identify which satellite the satellite signal is sent from, and then, the measurement, operation and control integrated system can realize the switching of the baseband connected to the board card by controlling the switching module, and realize the switching of the working mode to complete the corresponding measurement and control task or control task. In this way, the integrated control of measurement, control and operation control is realized, and the functions of the original two ground stations can be realized by one ground station, which reduces the number of ground stations and reduces the management difficulty of satellite measurement, operation and control.

FIG. 7 is a structural diagram of a satellite-ground communication device provided by another embodiment of the present application. As shown in FIG. 7 , a satellite-ground communication device includes: a memory 60 for storing computer programs;

The processor 61 is configured to implement the steps of a satellite-to-earth communication method in the above-mentioned embodiment when executing a computer program.

A satellite-ground communication device provided in this embodiment may include, but is not limited to, an earth station, an integrated measurement, operation and control system, and the like.

Wherein, the processor 61 may include one or more processing cores, such as a 4-core processor, an 8-core processor, and the like. Processor 61 can adopt at least one hardware form in Digital Signal Processor (Digital Signal Processor, DSP), Field-Programmable Gate Array (Field-Programmable Gate Array, FPGA), Programmable Logic Array (Programmable LogicArray, PLA) accomplish. The processor 61 may also include a main processor and a coprocessor, the main processor is a processor for processing data in the wake-up state, and is also called a central processing unit (Central Processing Unit, CPU); Low-power processor for processing data in standby state. In some embodiments, the processor 61 may be integrated with a graphics processor (Graphics Processing Unit, GPU), and the GPU is used for rendering and drawing the content that needs to be displayed on the display screen. In some embodiments, the processor 61 may also include an artificial intelligence (Artificial Intelligence, AI) processor, and the AI processor is used to process computing operations related to machine learning.

Memory 60 may include one or more computer-readable storage media, which may be non-transitory. The memory 60 may also include high-speed random access memory, and 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 to store the following computer program 601, wherein, after the computer program is loaded and executed by the processor 61, the relevant steps of a satellite-to-earth communication method disclosed in any of the foregoing embodiments can be implemented. In addition, the resources stored in the memory 60 may also include an operating system 602 and data 603, etc., and the storage method may be temporary storage or permanent storage. Wherein, the operating system 602 may include Windows, Unix, Linux and so on. Data 603 may include, but is not limited to, a method of satellite-to-ground communication, and the like.

In some embodiments, a satellite-ground communication device may further include a display screen 62 , an input/output interface 63 , a communication interface 64 , a power supply 65 and a communication bus 66 .

Those skilled in the art can understand that the structure shown in FIG. 7 does not constitute a limitation to a satellite-ground communication device, and may include more or less components than those shown in the figure.

A satellite-ground communication device provided in an embodiment of the present application includes a memory and a processor. When the processor executes a program stored in the memory, the following method can be implemented: a satellite-ground communication method.

The satellite-ground communication device provided in this embodiment executes the computer program stored in the memory through the processor to realize whether there is satellite working mode information in the integrated system of measurement, operation and control, and if it exists, directly according to the satellite working mode The information control switching module switches the working mode of the measurement, operation and control integrated system. If it does not exist, it will identify whether the working mode of the satellite is in low-speed measurement and control or high-speed operation and control according to the initial pseudo-code preset in the satellite signal sent by the satellite. , can also identify which satellite the satellite signal is sent from, and then, the measurement, operation and control integrated system can realize the switching of the baseband connected to the board card through the control switching module, and realize the switching of the working mode to complete the corresponding measurement and control tasks or control tasks. In this way, the integrated control of measurement, control and operation control is realized, and the functions of the original two ground stations can be realized by one ground station, which reduces the number of ground stations and reduces the management difficulty of satellite measurement, operation and control.

Finally, the present application also provides an embodiment corresponding to a computer-readable storage medium. A computer program is stored on a computer-readable storage medium, and when the computer program is executed by a processor, the steps described in the foregoing method embodiments are implemented.

It can be understood that if the methods in the above embodiments are implemented in the form of software function units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium , executing all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk and other various media that can store program codes. .

This embodiment provides a computer-readable storage medium. When the computer program stored in it is executed, it can be used to judge whether there is satellite working mode information in the integrated system of measurement, operation and control. The information control switching module switches the working mode of the measurement, operation and control integrated system. If it does not exist, it will identify whether the working mode of the satellite is in low-speed measurement and control or high-speed operation and control according to the initial pseudo-code preset in the satellite signal sent by the satellite. , can also identify which satellite the satellite signal is sent from, and then, the measurement, operation and control integrated system can realize the switching of the baseband connected to the board card through the control switching module, and realize the switching of the working mode to complete the corresponding measurement and control tasks or control tasks. In this way, the integrated control of measurement, control and operation control is realized, and the functions of the original two ground stations can be realized by one ground station, which reduces the number of ground stations and reduces the management difficulty of satellite measurement, operation and control.

A measurement, operation and control integrated system, a satellite-ground communication method, a device and a medium provided in the present application have been introduced in detail above. Each embodiment in the description is described in a progressive manner, each embodiment focuses on the difference from other embodiments, and the same and similar parts of each embodiment can be referred to each other. As for the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and for the related information, please refer to the description of the method part. It should be pointed out that those skilled in the art can make some improvements and modifications to the application without departing from the principles of the application, and these improvements and modifications also fall within the protection scope of the claims of the application.

It should also be noted that in this specification, relative terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that these entities or operations There is no such actual relationship or order between the operations. Furthermore, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article or apparatus comprising a set of elements includes not only those elements, but also includes elements not expressly listed. other elements of or also include elements inherent in such a process, method, article, or device. Without further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article or apparatus comprising said 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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