CN112948093A - Satellite reconstruction system, data processing method thereof and satellite-to-ground link communication system - Google Patents
Satellite reconstruction system, data processing method thereof and satellite-to-ground link communication system Download PDFInfo
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- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/46—Multiprogramming arrangements
- G06F9/48—Program initiating; Program switching, e.g. by interrupt
- G06F9/4806—Task transfer initiation or dispatching
- G06F9/4843—Task transfer initiation or dispatching by program, e.g. task dispatcher, supervisor, operating system
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- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
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- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
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Abstract
The application discloses a satellite reconstruction system, a data processing method thereof and a satellite-to-ground link communication system, wherein the method comprises the following steps: determining the current state of a data processing chip, wherein the data processing chip stores current frame reconstruction data which is annotated by a ground measurement and control center; if the current state of the data processing chip is determined to be in a data readable state, reading the reconstruction data of the current byte from the data processing chip and storing the reconstruction data in a first memory; if the current state of the data processing chip is determined to be in a data unreadable state, recording the timeout duration; if the recorded overtime duration reaches the overtime time limit, overtime notification information is sent to the ground measurement and control center, so that the ground measurement and control center resends the current frame reconstruction data according to the overtime notification information. By adopting the satellite reconstruction system, the data processing method thereof and the satellite-to-ground link communication system, a non-blocking satellite-to-ground link communication interaction mode is provided, and the transmission efficiency of reconstructed data is effectively improved.
Description
Technical Field
The present application relates to the field of data processing technologies, and in particular, to a satellite reconstruction system, a data processing method of the satellite reconstruction system, and a satellite-to-ground link communication system including the satellite reconstruction system.
Background
The types of satellites are wide, and the tasks that the satellites need to perform are also various. Many satellite tasks are performed by data interaction between satellite devices. Therefore, how to grasp the interactive process of the data in real time and process the data in time is very important for completing the satellite task. In the conventional data interaction mode, if data transmission is not completed, the current program continuously waits without executing subsequent tasks.
In the above data interaction method, once the transmission of data is blocked, this may cause a problem that the subsequent task cannot be executed.
Disclosure of Invention
In view of this, the present application provides a satellite reconfiguration system, a data processing method thereof, and a satellite-to-ground link communication system, so as to enable a ground measurement and control center to grasp the execution condition of a current task in real time, and to control the task to exit in time, thereby solving the problem that a subsequent task cannot be executed when data transmission is blocked.
In a first aspect, an embodiment of the present application provides a data processing method for a satellite reconstruction system, including:
the satellite reconstruction system comprises a data processing chip and a control chip, wherein the control chip comprises a processor and a first memory, and the following data processing method is executed in the processor:
determining the current state of a data processing chip, wherein current frame reconstruction data which is annotated by a ground measurement and control center is stored in the data processing chip, and the current frame reconstruction data comprises a plurality of bytes of reconstruction data;
if the current state of the data processing chip is determined to be in a data readable state, reading the reconstruction data of the current byte from the data processing chip and storing the reconstruction data in a first memory;
if the current state of the data processing chip is determined to be in a data unreadable state, recording the timeout duration;
if the recorded overtime duration reaches the overtime time limit, overtime notification information is sent to the ground measurement and control center, so that the ground measurement and control center resends the current frame reconstruction data according to the overtime notification information.
Optionally, the satellite reconstruction system may further include a second memory, wherein the data processing method may further include: determining whether the reconstruction data stored in the first memory is complete current frame reconstruction data; if the current frame reconstruction data is determined to be complete, writing the current frame reconstruction data into a second memory; and if the current frame reconstruction data is determined not to be complete, continuing to read the next byte of reconstruction data from the data processing chip.
Optionally, the timeout notification information may include a timeout flag, and the timeout flag may indicate at least one of: the frame number of the current frame reconstruction data, the error frame count and the confirmation frame number, wherein the confirmation frame number indicates the frame number corresponding to the frame reconstruction data which is written into the second memory at the latest time.
Optionally, the current frame reconstruction data is encapsulated in the target file, wherein the step of writing the current frame reconstruction data into the second memory may include: extracting a current frame serial number, a current frame type and a file type of a target file of current frame reconstruction data; determining whether the current frame reconstruction data meets the storage condition based on the extracted current frame serial number, the current frame type and the file type; and if the current frame reconstruction data are determined to meet the storage condition, writing the file attribute of the target file into a second memory, and writing the current frame reconstruction data into the second memory.
In a second aspect, an embodiment of the present application provides a satellite reconstruction system, including: the control chip comprises a processor and a first memory;
the processor determines the current state of the data processing chip, wherein the data processing chip stores current frame reconstruction data which is annotated by the ground measurement and control center, and the current frame reconstruction data comprises a plurality of bytes of reconstruction data;
if the processor determines that the current state of the data processing chip is in a data readable state, reading reconstruction data of the current byte from the data processing chip and storing the reconstruction data in a first memory;
if the processor determines that the current state of the data processing chip is in a data unreadable state, recording the timeout duration;
and if the recorded overtime duration reaches the overtime time limit, the processor sends overtime notification information to the ground measurement and control center, so that the ground measurement and control center resends the current frame reconstruction data according to the overtime notification information.
Optionally, the satellite reconstruction system may further include a second memory, wherein the processor determines whether the reconstruction data stored in the first memory is complete current frame reconstruction data; if the processor determines that the current frame reconstruction data is complete, writing the current frame reconstruction data into a second memory; if the processor determines that the current frame reconstruction data is not complete, then the next byte of reconstruction data continues to be read from the data processing chip.
Optionally, the timeout notification information may include a timeout flag, and the timeout flag may indicate at least one of: the frame number of the current frame reconstruction data, the error frame count and the confirmation frame number, wherein the confirmation frame number indicates the frame number corresponding to the frame reconstruction data which is written into the second memory at the latest time.
Optionally, the current frame reconstruction data is encapsulated in the target file, wherein the processing performed by the processor to write the current frame reconstruction data into the second memory may include: the processor extracts the current frame serial number, the current frame type and the file type of the target file of the current frame reconstruction data; the processor determines whether the current frame reconstruction data meets the storage condition based on the extracted current frame sequence number, the current frame type and the file type; and if the processor determines that the current frame reconstruction data meets the storage condition, writing the file attribute of the target file into the second storage, and writing the current frame reconstruction data into the second storage.
In a third aspect, an embodiment of the present application provides a satellite-ground link communication system, including: ground measurement and control center and satellite reconstruction system.
In a fourth aspect, the present application provides a computer-readable storage medium, on which a computer program is stored, where the computer program is executed by a processor to execute the steps of the data processing method of the satellite reconstruction system.
The embodiment of the application brings the following beneficial effects:
the embodiment of the application provides a data processing method of a satellite reconstruction system, which comprises the following steps: determining the current state of a data processing chip, wherein current frame reconstruction data which is annotated by a ground measurement and control center is stored in the data processing chip, and the current frame reconstruction data comprises a plurality of bytes of reconstruction data; if the current state of the data processing chip is determined to be in a data readable state, reading the reconstruction data of the current byte from the data processing chip and storing the reconstruction data in a first memory; if the current state of the data processing chip is determined to be in a data unreadable state, recording the timeout duration; and if the recorded overtime duration reaches the overtime time limit, sending overtime notification information to the ground measurement and control center so that the ground measurement and control center resends the current frame reconstruction data according to the overtime notification information. According to the method and the device, the ground measurement and control center can timely master the receiving and storing conditions of the current frame reconstruction data through the overtime notification information, and reasonably analyze and modify the execution conditions of the program tasks, so that the problem that the subsequent tasks cannot be executed due to data transmission blockage is avoided, and meanwhile, the ground measurement and control center can control the program tasks more flexibly and timely.
In order to make the aforementioned objects, features and advantages of the present application more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments are briefly described below, and it is obvious that the following drawings are some embodiments of the present application, and it is obvious for those skilled in the art to obtain other related drawings without creative efforts.
Fig. 1 is a schematic flowchart of a data processing method of a satellite reconstruction system according to an embodiment of the present disclosure;
fig. 2 is a schematic structural diagram of a satellite reconstruction system according to an embodiment of the present disclosure;
fig. 3 is a schematic structural diagram of a satellite-ground link communication system according to an embodiment of the present application.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions of the present application will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the prior art, in the execution process of a satellite task, a data interaction mode of a low earth orbit satellite security protection module mainly adopts a data interaction mode of an autonomous release mode (namely, a blocking mode). For example, when data interaction between satellite devices is performed, if data transmission is not ready or problems are encountered during transmission, the current program may continuously wait for data without performing subsequent tasks, resulting in failure to complete data interaction. The above-mentioned data interaction blocking mode is not favorable to a large amount of real-time data interaction, and in data blocking transmission, transmission state information cannot be formed in time, the task blocks the follow-up proceeding of the program, and the transmission state cannot be informed to the ground, which can lead to that ground personnel are difficult to judge the execution condition of the current task, and the task can not be controlled to exit in time.
Based on this, the embodiments of the present application provide a satellite reconstruction system, a data processing method thereof, and a satellite-to-ground link communication system, where a ground measurement and control center can timely grasp the receiving and/or writing conditions of current frame reconstruction data through an overtime notification message, and make reasonable analysis and modification for the task execution conditions, so as to avoid the problem that subsequent tasks cannot be executed due to data transmission blocking, and at the same time, make the ground measurement and control center control program tasks more flexibly and timely.
To facilitate understanding of the present embodiment, first, a data processing method of a satellite reconstruction system disclosed in an embodiment of the present application is described in detail, and fig. 1 is a schematic flow chart of the data processing method of the satellite reconstruction system provided in the embodiment of the present application, as shown in fig. 1, the method includes the following steps:
Specifically, the ground measurement and control center performs sub-packet processing on the reconstruction data to be uploaded, encapsulates each frame reconstruction data subjected to sub-packet processing in a corresponding file, and then uploads only one frame reconstruction data file to the data processing chip at a time. The data processing chip includes basic structures such as a Programmable input/output unit, a configurable logic block, digital clock management, and the like, for example, the data processing chip may be an FPGA (Field Programmable Gate Array) chip; it can be understood that the frame reconstruction data file stored in the current data processing chip is current frame reconstruction data, and the current frame reconstruction data includes multiple single-byte reconstruction data, for example: each current frame reconstruction data may be 512 bytes in length; the reconstruction data types of the current frame reconstruction data include, but are not limited to: FPGA program data, CPU program data and DSP program data. The processor can determine whether the data processing chip is currently in a data readable state according to the state of the input and output unit of the data processing chip.
In one example, the processor initializes a timeout count to 0 before determining the current state of the data processing chip. Here, the timeout count is used to record the length of the timeout.
And 102, if the current state of the data processing chip is determined to be in a data readable state, reading the reconstruction data of the current byte from the data processing chip and storing the reconstruction data in the first memory.
Specifically, if the processor finds that the data processing chip has readable current frame reconstruction data by reading the state of the input/output unit in the data processing chip, it is determined that the data processing chip is currently in a data readable state. After determining that the data processing chip is currently in a data readable state, the processor reads one byte of reconstruction data from the data processing chip. Upon successful reading of a byte of reconstruction data, the processor sets a timeout flag to no timeout, and saves the read byte of reconstruction data in the first memory while deleting the byte of reconstruction data stored in the data processing chip. Here, after the read one-byte reconstruction data is stored in the first memory, it is also determined whether the reconstruction data stored in the first memory is complete current frame reconstruction data, and if it is determined that the reconstruction data is complete current frame reconstruction data, the current frame reconstruction data is written in the second memory; and if the current frame reconstruction data is determined not to be complete, continuing to read the next byte of reconstruction data from the data processing chip. The first memory may be a static random access memory, which is a memory with a static access function, and can store data stored therein without a refresh circuit, for example: an SRAM (Static Random-Access Memory); the second memory may be a non-volatile memory such as: FLASH (FLASH memory).
In one example, the step of writing the current frame reconstruction data to the second memory comprises: the processor extracts the current frame serial number, the current frame type and the file type of the target file of the current frame reconstruction data from the current frame reconstruction data; determining whether the current frame reconstruction data meets the storage condition based on the extracted current frame serial number, the current frame type and the file type; and if the current frame reconstruction data are determined to meet the storage condition, writing the file attribute of the target file into a second memory, and writing the current frame reconstruction data into the second memory. Wherein, the file attribute refers to basic attribute information of the file, including but not limited to: total length of file, version number, CRC check code.
Specifically, the extracted current frame number is compared with an expected frame number; if the current frame serial number is consistent with the expected frame serial number, comparing the extracted current frame type with the expected frame type; if the current frame type is determined to be consistent with the expected frame type, comparing the extracted file type with the expected file type; if the file type is determined to be consistent with the expected file type, determining that the current frame reconstruction data meets the storage condition; and if the current frame serial number is determined to be inconsistent with the expected frame serial number, the current frame type is determined to be inconsistent with the expected frame type, or the file type is determined to be inconsistent with the expected file type, determining that the current frame reconstruction data does not meet the storage condition.
By way of example, the frame types of the data to be annotated include, but are not limited to: FPGA program frame type, CPU program frame type, DSP program frame type, file type includes but is not limited to: FPGA program file type, CPU program file type, DSP program file type. The expected frame type is used for judging whether a data type corresponding to current frame reconstruction data annotated by the ground measurement and control center is expected, and the expected frame type and the current frame type are consistent with the reconstruction data type, and include but are not limited to: FPGA program frame type, CPU program frame type, DSP program frame type; the file type identifier is used by the control unit 102 to determine whether a file type corresponding to a current frame reconstruction data file injected by the ground measurement and control center is expected, where the file type includes but is not limited to: FPGA program file type, CPU program file type, DSP program file type; the expected frame sequence number is used for judging whether the sequence number corresponding to the current frame reconstruction data to be received accords with the expectation.
Taking the above example as an example, the processor obtains the FIFO status from the FPGA and determines whether to read one byte of reconstruction data according to the FIFO status. And if the FIFO state is determined to be a data readable state, reading one byte of reconstruction data from the FPGA, marking that no timeout occurs, and storing the read reconstruction data in the SRAM. If the current frame reconstruction data is 512 bytes, the current frame reconstruction data is written into FLASH after all 512 bytes of the current frame reconstruction data are stored in the SRAM.
And 103, recording the timeout duration if the current state of the data processing chip is determined to be in the data unreadable state.
Specifically, if the processor finds that the data processing chip does not have readable current frame reconstruction data by reading the state of the input/output unit in the data processing chip, it is determined that the data processing chip is currently in a data unreadable state. And after the data processing chip is determined to be in the data unreadable state at present, the processor controls the digital clock to start the overtime counting and records the overtime duration. If the recorded timeout duration reaches the timeout time limit, marking that timeout occurs, and continuing to execute step 104; if the recorded timeout period has not reached the timeout period, the processor returns to step 101.
And 104, if the recorded timeout duration reaches the timeout time limit, sending timeout notification information to the ground measurement and control center, so that the ground measurement and control center resends the current frame reconstruction data according to the timeout notification information.
Specifically, if the recorded timeout duration reaches the timeout period, for example: and if the time is 1 second, marking that the time is overtime, and sending overtime notification information to the ground measurement and control center. After receiving the overtime notification information, the ground measurement and control center determines a frame number corresponding to the frame reconstruction data which is read unsuccessfully according to the information, and retransmits the frame reconstruction data corresponding to the frame number to the satellite reconstruction system through the satellite-ground link, so that the satellite reconstruction system reads the frame reconstruction data again. Wherein the timeout notification information includes a timeout flag indicating at least one of: frame number of reconstructed data of current frame, error frame count and confirmed frame number. The confirmation frame sequence number indicates a frame sequence number corresponding to the frame reconstruction data which is written into the second memory at the latest time, and the error frame count is used for recording the times that the frame reconstruction data cannot be successfully written into the second memory; the frame number is extracted from the frame reconstruction data, and each frame reconstruction data includes a corresponding frame number.
The embodiment of the application provides a data processing method of a satellite reconstruction system, which is used for determining the current state of a data processing chip, wherein current frame reconstruction data which is annotated by a ground measurement and control center is stored in the data processing chip, and the current frame reconstruction data comprises a plurality of bytes of reconstruction data; if the current state of the data processing chip is determined to be in a data readable state, reading the reconstruction data of the current byte from the data processing chip and storing the reconstruction data in a first memory; if the current state of the data processing chip is determined to be in a data unreadable state, recording the timeout duration; if the recorded overtime duration reaches the overtime time limit, overtime notification information is sent to the ground measurement and control center, so that the ground measurement and control center resends the current frame reconstruction data according to the overtime notification information. By adopting the data processing method of the satellite reconstruction system, the ground measurement and control center can timely master the receiving and/or writing condition of the current frame reconstruction data through the overtime notification information and reasonably analyze and modify the execution condition of the task, so that the problem that the subsequent task cannot be executed due to data transmission blockage is avoided, and meanwhile, the ground staff can more flexibly and timely control the program task.
Based on the same inventive concept, a satellite reconstruction system corresponding to the data processing method of the satellite reconstruction system shown in fig. 1 is also provided in the embodiments of the present application, and since the principle of solving the problem of the system in the embodiments of the present application is similar to the data processing method of the satellite reconstruction system described above in the embodiments of the present application, the implementation of the system may refer to the implementation of the method, and repeated details are not described.
Fig. 2 is a schematic structural diagram of a satellite reconstruction system according to an embodiment of the present disclosure, and as shown in fig. 2, the satellite reconstruction system 200 includes a data processing chip 210 and a control chip 220, where the control chip includes a processor 221 and a first memory 222;
the processor 221 determines the current state of the data processing chip 210, wherein the data processing chip 210 stores current frame reconstruction data annotated by the ground measurement and control center, and the current frame reconstruction data includes multiple bytes of reconstruction data;
if the processor 221 determines that the current state of the data processing chip 210 is in a data-readable state, reading the reconstructed data of the current byte from the data processing chip 210 and storing in the first memory 222;
if the processor 221 determines that the current state of the data processing chip 210 is in the data unreadable state, recording the timeout duration;
if the recorded timeout duration reaches the timeout time limit, the processor 221 sends timeout notification information to the ground measurement and control center, so that the ground measurement and control center resends the current frame reconstruction data according to the timeout notification information.
An embodiment of the present application further provides a satellite-to-ground link communication system, and fig. 3 is a schematic structural diagram of the satellite-to-ground link communication system provided in the embodiment of the present application. As shown in fig. 3, the satellite-ground link communication system 10 includes a ground measurement and control center 300 and the satellite reconstruction system 200.
The description of the processing flow of each part in the system and the interaction flow between each part may refer to the related description in the above method embodiments, and will not be described in detail here.
Corresponding to the data processing method of the satellite reconstruction system in fig. 1, an embodiment of the present application further provides a computer-readable storage medium, on which a computer program is stored, and the computer program is executed by a processor to perform the steps of the data processing method of the satellite reconstruction system.
In particular, the storage medium can be a general-purpose storage medium, such as a removable disk, a hard disk, or the like, and when executed, the computer program on the storage medium can execute the data processing method of the non-blocking satellite reconstruction system.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the foregoing systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, a division of a unit is merely a division of one logic function, and there may be other divisions when actually implemented, and for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection of devices or units through some communication interfaces, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments provided in the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium and including instructions for causing an electronic device (which may be a personal computer, a server, or a network device) to perform all or part of the steps of the method according to 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 or an optical disk, and other various media capable of storing program codes.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus once an item is defined in one figure, it need not be further defined and explained in subsequent figures, and moreover, the terms "first", "second", "third", etc. are used merely to distinguish one description from another and are not to be construed as indicating or implying relative importance.
Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present application, and are used for illustrating the technical solutions of the present application, but not limiting the same, and the scope of the present application is not limited thereto, and although the present application is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope disclosed in the present application; such modifications, changes or substitutions do not depart from the spirit and scope of the exemplary embodiments of the present application, and are intended to be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (10)
1. A data processing method of a satellite reconstruction system is characterized in that the satellite reconstruction system comprises a data processing chip and a control chip, the control chip comprises a processor and a first memory, wherein the following data processing method is executed in the processor:
determining the current state of a data processing chip, wherein current frame reconstruction data which is annotated by a ground measurement and control center is stored in the data processing chip, and the current frame reconstruction data comprises a plurality of bytes of reconstruction data;
if the current state of the data processing chip is determined to be in a data readable state, reading the reconstruction data of the current byte from the data processing chip and storing the reconstruction data in a first memory;
if the current state of the data processing chip is determined to be in a data unreadable state, recording the timeout duration;
and if the recorded overtime duration reaches the overtime time limit, sending overtime notification information to the ground measurement and control center so that the ground measurement and control center resends the current frame reconstruction data according to the overtime notification information.
2. The data processing method of claim 1, wherein the satellite reconstruction system further comprises a second memory,
wherein, the data processing method further comprises:
determining whether the reconstruction data stored in the first memory is complete current frame reconstruction data;
if the current frame reconstruction data is determined to be complete, writing the current frame reconstruction data into a second memory;
and if the current frame reconstruction data is determined not to be complete, continuing to read the next byte of reconstruction data from the data processing chip.
3. The data processing method according to claim 1 or 2, wherein the timeout notification information comprises a timeout flag indicating at least one of: the frame number of the current frame reconstruction data, the error frame count and the confirmation frame number, wherein the confirmation frame number indicates the frame number corresponding to the frame reconstruction data which is written into the second memory at the latest time.
4. The data processing method of claim 2, wherein the current frame reconstruction data is encapsulated in a target file,
wherein writing the current frame reconstruction data to a second memory comprises:
extracting the current frame serial number, the current frame type and the file type of the target file of the current frame reconstruction data;
determining whether the current frame reconstruction data meets the storage condition based on the extracted current frame serial number, the current frame type and the file type;
and if the current frame reconstruction data are determined to meet the storage condition, writing the file attribute of the target file into a second memory, and writing the current frame reconstruction data into the second memory.
5. The satellite reconstruction system is characterized by comprising a data processing chip and a control chip, wherein the control chip comprises a processor and a first memory;
the processor determines the current state of a data processing chip, wherein current frame reconstruction data which is annotated by a ground measurement and control center is stored in the data processing chip, and the current frame reconstruction data comprises reconstruction data of a plurality of bytes;
if the processor determines that the current state of the data processing chip is in a data readable state, reading reconstruction data of a current byte from the data processing chip and storing the reconstruction data in a first memory;
if the processor determines that the current state of the data processing chip is in a data unreadable state, recording the timeout duration;
and if the recorded overtime duration reaches the overtime time limit, the processor sends overtime notification information to the ground measurement and control center so that the ground measurement and control center resends the current frame reconstruction data according to the overtime notification information.
6. The satellite reconstruction system of claim 5 further comprising a second memory,
wherein the processor determines whether the reconstruction data stored in the first memory is complete current frame reconstruction data;
if the processor determines that the current frame reconstruction data is complete, writing the current frame reconstruction data into a second memory;
and if the processor determines that the current frame reconstruction data is not complete, continuing to read the next byte of reconstruction data from the data processing chip.
7. The satellite reconstruction system of claim 5 or 6 wherein said timeout notification information includes a timeout flag indicating at least one of: the frame number of the current frame reconstruction data, the error frame count and the confirmation frame number, wherein the confirmation frame number indicates the frame number corresponding to the frame reconstruction data which is written into the second memory at the latest time.
8. The satellite reconstruction system of claim 6 wherein the current frame reconstruction data is encapsulated in an object file,
wherein the processing executed by the processor to write the current frame reconstruction data into the second memory comprises:
the processor extracts the current frame serial number, the current frame type and the file type of the target file of the current frame reconstruction data;
the processor determines whether the current frame reconstruction data meets the storage condition based on the extracted current frame sequence number, the current frame type and the file type;
and if the processor determines that the current frame reconstruction data meets the storage condition, writing the file attribute of the target file into the second storage, and writing the current frame reconstruction data into the second storage.
9. A satellite-to-ground link communication system, characterized in that it comprises a ground measurement and control center and a satellite reconstruction system according to any of claims 5-8.
10. 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, performs the steps of the data processing method of a satellite reconstruction system according to any one of claims 1-4.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110342659.5A CN112948093B (en) | 2021-03-30 | 2021-03-30 | Satellite reconstruction system, data processing method thereof and satellite-ground link communication system |
Applications Claiming Priority (1)
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