CN112838886B - Data processing method, device and equipment for small satellite and storage medium - Google Patents

Abstract

The invention discloses a data processing method, a device, equipment and a storage medium for a small satellite, wherein the method comprises the following steps: acquiring a target data object, and determining a target effective data domain of the target data object; determining a target virtual channel identifier corresponding to the target effective data field according to the mapping relation between the effective data field and the virtual channel identifier; determining a target data format corresponding to the target data object according to a mapping relation between the data object and a preset data format; nesting the virtual channel identifier and the effective data field of the target data object according to the target data format to obtain target data format data; and sending the target data object according to the target data format data. The invention simplifies the complexity of software and hardware systems of satellite communication, realizes the support of different communication tasks and communication scenes, and improves the comprehensive capacity of the communication tasks.

Description

A data processing method, device, equipment and storage medium for small satellites

technical field

The present invention relates to the technical field of satellite communications, in particular to a data processing method, device, equipment and storage medium for small satellites.

Background technique

At present, satellite communication has multi-task and multi-link requirements for measurement and control, feeder forwarding, and the existing measurement and control, feeder forwarding still mainly use independent communication links and communication protocols, and the system complexity is high.

Small satellites have received more and more attention in recent years due to their short development cycle, low development cost, flexible design, and rapid deployment. However, its shortcomings are also very obvious. Due to the small size of the satellite, the resources that can be provided to the product such as weight, volume, and power consumption are also limited. This requires that the small satellite must consider the product in the product design. Integration and integration of functions in order to maximize the effectiveness of small satellites.

SUMMARY OF THE INVENTION

In order to solve the problems in the prior art, the embodiments of the present invention provide a small satellite communication working mode method, device, device and storage medium, and the technical solutions are as follows:

On the one hand, the present application proposes a data processing method for small satellites, the method comprising:

Obtain a target data object, and determine the target valid data field of the target data object;

According to the mapping relationship between the valid data field and the virtual channel identifier, determine the target virtual channel identifier corresponding to the target valid data field, and use the target virtual channel identifier as the virtual channel identifier of the target data object;

Determine the target data format corresponding to the target data object according to the mapping relationship between the data object and the preset data format;

Perform nesting processing on the virtual channel identifier and the valid data field of the target data object according to the target data format to obtain target data format data;

The target data object is sent according to the target data format data.

On the other hand, the present application proposes a data processing device for small satellites, the device comprising:

Data acquisition module: used to acquire the target data object, and determine the target valid data field of the target data object;

Data identification determination module: used to determine the target virtual channel identifier corresponding to the target effective data field according to the mapping relationship between the effective data field and the virtual channel identifier, and use the target virtual channel identifier as the target data object. virtual channel identifier;

Data format generation module: used to determine the target data format corresponding to the target data object according to the mapping relationship between the data object and the preset data format;

Data embedding processing module: for performing nesting processing on the virtual channel identifier and valid data field of the target data object according to the target data format, to obtain target data format data;

Data sending module: used for sending the target data object according to the target data format data.

Optionally, the data embedding processing module includes:

Task source determination module: used to determine the task source of the target data object;

Data frame format determination module: for determining the data frame format of the valid data field according to the task source of the target data object;

Valid data field generation module: used to process the valid data field according to the data frame format of the valid data field to obtain the processed valid data field;

The module for obtaining target data format data is configured to perform nesting processing on the virtual channel identifier of the target data object and the processed valid data field according to the target data format to obtain target data format data.

Optionally, in an embodiment, the data embedding processing module further includes:

Identifier acquisition module: used to acquire local aerospace identifiers;

Filling target data module: used to fill the local aerospace identifier, the virtual channel identifier of the target data object, and the processed valid data fields into corresponding areas in the target data format, respectively, to obtain the Target data format data.

Optionally, in an embodiment, the data processing apparatus for small satellites further includes:

Data receiving module: used to receive a data object in a preset data format, where the preset data format includes a virtual channel identifier of the data object;

Data type determination module: for determining the data type of the data object according to the virtual channel identifier of the data object;

Execution object determination module: used to determine the execution object of the data object according to the data type of the data object;

Data execution module: used to send the data object to the execution object, so that the execution object executes the data object.

Optionally, in an embodiment, before the data execution module includes:

Judging module: for judging whether the data type of the data object is a filling data type; if so, the data object is not executed;

Determining module: if the data type of the data object is not padding data, execute the data object and send it to the execution object, so that the execution object executes the data object.

Optionally, in an embodiment, the data execution module includes:

Verification module: for verifying the data object if the data type of the data object is a direct instruction type;

Decoding module: used to decode the data object according to the direct instruction frame format if the verification is passed;

Execution module after verification: sending the decoded data object to the execution object, so that the execution object executes the data object.

Optionally, the data format generation module further includes:

Obtaining bit stream data information module: for obtaining the bit stream data information of the target data format data;

Rate determination module: configured to determine the uplink and downlink transmission rates according to the bit stream data information of the target data format data.

Another aspect provides a device, the device includes a processor and a memory, the memory stores at least one instruction, at least one program, a code set or an instruction set, the at least one instruction, the at least one program, The code set or instruction set is loaded and executed by the processor to implement the data processing method as described above.

Another aspect provides a storage medium in which at least one instruction, at least one piece of program, code set or instruction set is stored, the at least one instruction, the at least one piece of program, the code set or the instruction set Loaded and executed by the processor to implement the data processing method as described above.

A method, device, equipment and storage medium for satellite data processing provided by the present invention have the following technical effects:

The embodiment of the present invention determines the target data format corresponding to the target data object through the mapping relationship between the target data valid data field and the virtual channel identifier, and compares the virtual channel identifier and valid data field of the target data object according to the target data format. The nesting process is performed to obtain target data format data, and then the target data object is sent according to the target data format data. The above technical solution adopts a nested data transmission frame format, which can simultaneously satisfy the transmission tasks of satellite measurement and control, power feeding and inter-satellite information, simplifies the complexity of the software and hardware systems of satellite communication, and realizes different communication tasks. And the support of communication scenarios, improve the comprehensive ability of communication tasks.

It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure.

Description of drawings

In order to illustrate the technical solutions in the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings used in the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained from these drawings without creative effort.

1 is an application environment of a data processing method for a small satellite according to an embodiment of the present invention;

2 is a schematic flowchart of a data processing method for small satellites provided by an embodiment of the present invention;

3 is a schematic diagram of an uplink frame format in a satellite communication mode provided by an embodiment of the present invention;

4 is a schematic diagram of acquiring target format data provided by an embodiment of the present invention;

5a is a schematic diagram of a direct instruction frame format provided by an embodiment of the present invention;

FIG. 5b is a schematic diagram of a top-note data frame format 1 provided by an embodiment of the present invention;

Fig. 5c is a schematic diagram of a top-note data frame format 2 provided by an embodiment of the present invention;

6 is a schematic diagram of data format data obtained according to an aerospace identifier and a valid data field provided by an embodiment of the present invention;

7 is a schematic flowchart of another data processing method for small satellites provided by an embodiment of the present invention;

8 is a schematic diagram of judging data types provided by an embodiment of the present invention;

9 is a schematic diagram of a data execution object selection method provided by an embodiment of the present invention;

10 is a schematic diagram of determining a data transmission rate provided by an embodiment of the present invention;

11 is a schematic diagram of a satellite uplink and downlink communication rate combination mode provided by an embodiment of the present invention;

12 is a block diagram of a data processing device for a small satellite provided by an embodiment of the present invention;

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

Please refer to FIG. 1, which shows an application environment of a data processing method for small satellites according to an embodiment of the present invention, and the application environment can be used for feeder information transmission, satellite measurement and control, And under the three modes of inter-satellite information transmission, it can meet the needs of multi-link and multi-task communication.

Those skilled in the art can understand that FIG. 1 is only a schematic diagram of a communication system, which does not limit the communication system. The communication system between satellite and earth and between satellite and satellite consists of satellite constellation system and earth station system.

The method provided by the implementation of the present invention will be described in detail below with reference to the application scenario shown in FIG. 1 .

Please refer to FIG. 2 , which is a schematic flowchart of a data processing method for small satellites according to an embodiment of the present invention. It should be noted that this specification provides the operation steps of the method as described in the embodiment or the flowchart, But based on routine or non-creative work may include more or less operation steps. The sequence of steps enumerated in the embodiments is only one way of execution sequence of many steps, and does not represent the only execution sequence. When an actual system or product is executed, the methods shown in the embodiments or the accompanying drawings may be executed sequentially or in parallel (for example, a parallel processor or a multi-threaded processing environment). Specifically, as shown in Figure 2, the method specifically includes the following steps:

S201: Acquire a target data object, and determine a target valid data field of the target data object.

In the embodiment of the present invention, specifically, the target data object includes information such as data type, data size, and data length, and the effective data field of the target data of the target data object is determined according to the specific content of the transmitted data information.

S202: Determine the target virtual channel identifier corresponding to the target valid data field according to the mapping relationship between the valid data field and the virtual channel identifier, and use the target virtual channel identifier as the virtual channel identifier of the target data object.

In the embodiment of the present invention, specifically, the virtual channel identifier is generated when the signal performs data encoding, and different data types are identified by different virtual channels, so as to distinguish the transmission data types.

Specifically, there is a corresponding mapping relationship between the virtual channel identifier and the valid data field, and the corresponding relationship between different virtual channel identifiers and the valid data field determines the target data object to be transmitted.

S203: Determine a target data format corresponding to the target data object according to the mapping relationship between the data object and the preset data format.

In the embodiment of the present invention, specifically, the data transmission format may be determined according to the relationship between the transmission data object and the preset format and according to the communication information protocol. The transmission frame of the data transmission format includes synchronization code, version number, spacecraft identifier, virtual channel identifier, frame count, signal field, bit stream data and check symbol. The upstream frame format is shown in Figure 3:

Specifically, the synchronization code of the data transmission frame is used to complete the synchronization of the data information frame to ensure that the receiving end can output a complete and coherent signal. The version number is used to specify the version of the current format information. Here, the version number is 2 bits, and takes a fixed "01", indicating that the data structure is a virtual channel specification data unit, and the format information version is specified.

Specifically, the spacecraft identifier is used to specify the spacecraft code corresponding to the current data frame format. The data bit size of the spacecraft identifier can be freely selected according to the number of satellites, but generally it should not be too large. The spacecraft identifier here is 8 bits, which can characterize up to 256 satellites.

Specifically, the virtual channel identifier is used to specify the sending address of the bit stream data in the data frame format. The data bit size of the virtual channel identifier is determined according to the number of virtual channels, and is represented by a binary number. Its virtual channel is a plurality of parallel "virtual" paths established on a physical channel, which enables the upper-layer data streams of multiple users to share the same physical channel, and each virtual channel has its own service requirements and service levels. Before the user data from different service types are sent to the channel, a fixed-length virtual channel specification data unit is used, and a synchronization preamble is used to delimit it.

Specifically, the frame count is used to specify the number of data frames to be sent. The frame count is 24 bits, which are sequentially coded for transmission frames generated on each virtual channel, and the value ranges from 0 to 2 ²⁴ -1, and each virtual channel is counted separately. The check symbol is used to check the correctness of the data transmission frame. The RS-check symbol is 1024 bits, the length is 128 bytes, and the RS (255, 223) error correction coding with the interleaving depth of 4 is adopted.

Specifically, the signal field is used to specify the state of the data frame sent by the satellite. For the uplink data frame, the signal field has no practical significance, and this feature is reserved for reserved use only. For downstream frame data, the signal field contains the playback identifier and the storage partition identifier.

The playback flag indicates whether the downstream data is real-time data or playback data. If the playback identifier is represented as real-time data, the content of the storage partition identifier is meaningless, and only fills data. If the playback identifier representation is playback data, the content of the persistent storage partition identifier represents the address from which the playback data is stored.

Specifically, the bit stream data field is used to agree on the actual valid data content to be sent. Bit stream data can be unformatted data or formatted data. When the bit stream data is formatted data, the format should contain at least the spacecraft identifier and the virtual channel identifier.

Here, the bit stream data field is 7088 bits and the total length is 886 bytes. If the data bits of the valid data are less than 886 bytes, the AA code is filled after the valid data until the bit stream data field of 886 bytes is filled.

S204: Perform nesting processing on the virtual channel identifier and the valid data field of the target data object according to the target data format, to obtain target data format data.

In the embodiment of the present invention, the virtual channel identifier and the valid data field of the target data object are nested, and it may be considered that the target data object is filled with valid data fields and the virtual channel identifier is identified according to the target data format. , to obtain the target data format data.

In a specific embodiment, as shown in FIG. 4 , the step of performing nesting processing according to the virtual channel identifier and the valid data field to obtain the target data format data includes:

S401: Determine the task source of the target data object;

The task source of the target data object includes three modes of satellite measurement and control, power feed, and inter-satellite information transmission, and satellite measurement and control includes operations such as satellite telemetry and remote control, and ranging. Feeding refers to the communication link between the earth and the satellite to complete the data communication between the earth station and the satellite station. Inter-satellite information transmission refers to the interactive transmission of data information between satellites.

In this embodiment, data processing can be performed on these three modes through the target data format to complete the satellite multi-task communication working mode.

S402: Determine the data frame format of the valid data field according to the task source of the target data object;

The data frame format of the effective data field of the target data object includes the direct instruction frame format and the upper note data frame format, wherein the upper note data frame format can include two different formats, as shown in Figure 5a, Figure 5b and Figure 5c, FIG. 5a is a schematic diagram of a direct command frame format provided by an embodiment of the present invention, FIG. 5b is a schematic diagram of a topline data frame format 1, and FIG. 5c is a schematic diagram of a topline data frame format 2. The data frame format can specifically include the satellite address word, the mode word, the frame data field and the frame CRC. According to the different tasks to be performed, different data frame formats are selected. The data transmission carried by the data frame format is not only It can include inter-satellite data transmissions, as well as transmissions between earth stations and satellites.

S403: Process the valid data field according to the data frame format of the valid data field to obtain a processed valid data field;

Among them, the valid data field can satisfy the measurement and control mode, or satisfy the feeding mode and the inter-satellite information transmission mode.

S404: Perform nesting processing on the virtual channel identifier of the target data object and the processed valid data field according to the target data format to obtain target data format data.

The nesting process is to fill in the valid data field and the virtual channel identifier into the upstream data frame format. The nested valid data is nested into the bitstream data, as shown in Figure 5a, Figure 5b, Figure 5c, the direct command, the upper note data 1, and the upper note data 2 can be filled into the upstream data as valid data in different modes. In the bit stream data in the frame format, the spacecraft identifier, the virtual channel identifier and the data field are jointly implemented. At the same time, other transmission frames in the uplink format are also filled in corresponding positions according to the corresponding data.

In another specific embodiment, as shown in FIG. 6 , the step of performing nesting processing on the virtual channel identifier and the valid data field of the target data object according to the target data format, and obtaining the target data format data includes: :

S601: Obtain the local aerospace identifier;

Specifically, according to the spacecraft identifier and the virtual channel identifier, the satellite can specify the type of local data and the object of data reception execution. Similarly, during inter-satellite information transmission, the spacecraft identifier and virtual channel identifier in the bit stream data format can determine the target satellite code for inter-satellite information transmission, the data type for target satellite information reception, and the object for data reception execution. .

S602: Fill the local aerospace identifier, the virtual channel identifier of the target data object, and the processed valid data field into corresponding regions in the target data format, respectively, to obtain the target data format data.

The following describes the specific process of inter-satellite information forwarding in a specific embodiment as follows:

Step 1. The target data object is composed and forwarded to the satellite labeled 01 according to the format shown in Figure 3, wherein the spacecraft identifier is filled in the identifier of the satellite labeled 01, and the virtual channel identifier is filled in to indicate the payload channel identifier. . By filling in the identifier of the satellite with the label of 01 and the identifier of the load channel, the source of the data transmission and the virtual channel identifier of the transmitted data are determined.

Step 2. Fill the bit stream data in the upstream data frame format with valid data, as shown in Figure 5a, Figure 5b, Figure 5c, the direct instruction, the upper note data 1, and the upper note data 2 can be filled into the bit stream as valid data. in the data.

Among them, the satellite address word in Fig. 5a, Fig. 5b, Fig. 5c is filled with the satellite address word labeled 02, the purpose of which is to determine the target satellite object of data transmission.

In view of this, in an exemplary embodiment, the data processing method may further include, as shown in FIG. 7 :

S701: Receive a data object in a preset data format, where the preset data format includes a virtual channel identifier of the data object;

Among them, the virtual channel identifier is generated when the data object is formed.

S702: Determine the data type of the data object according to the virtual channel identifier of the data object;

It can be understood that the data transmission object is identified by the virtual channel identifier.

S703: Determine the execution object of the data object according to the data type of the data object;

Specifically, different data types are processed by different execution objects.

S704: Send the data object to the execution object, so that the execution object executes the data object.

In the above embodiment, the data object is sent to the execution object, and the execution object makes a corresponding data processing method. In order to determine the data type of the data object, the data identified by the virtual channel is distinguished. In an exemplary embodiment, before step S704, as shown in FIG. 8, it may further include:

Judging whether the data type of the data object is a filling data type, if so, do not execute the data object; if not, execute the data object and send it to the execution object, so that the execution object executes the data object.

The execution of the data object is sent to the execution object, so that the execution object executes the data object. In an embodiment, when the execution object executes the data object, the steps are as shown in FIG. 9 :

S901: If the data type of the data object is a direct instruction type, verify the data object;

Specifically, if the data type is platform data or payload data, this operation is also performed.

S902: If the verification is passed, decode the data object according to the direct instruction frame format;

Specifically, if the direct instruction passes the verification, the data will be decoded. However, if the data transmission type is platform data or payload data, regardless of whether the data verification is correct, the bit stream of the platform data will be decoded. The first 514 bytes of the data are forwarded to the platform star service computer, and the payload data will be forwarded to the payload except for the frame data of the 128-byte check digit.

S903: Send the decoded data object to the execution object, so that the execution object executes the data object.

In satellite communication, the uplink and downlink rates of data transmission are part of the communication system. In this embodiment of the present invention, the data transmission rate is determined by bit stream data, and the size of the bit stream data determines the uplink and downlink transmission rates. In a specific embodiment, as shown in Figure 10, it includes:

S1001: Obtain bit stream data information of the target data format data;

S1002: Determine the uplink and downlink transmission rates according to the bit stream data information of the target data format data.

Specifically, when the bit stream data information of data transmission is relatively small, the transmission power is the same during the satellite communication process. In order to ensure the accuracy of data transmission and reduce the bit error rate of transmission information, a low rate is used to complete the transmission of target data.

Uplink rates currently typically do not exceed 5Mbps, with most being below 1Mbps. In addition to the size of the bit stream data, the influencing factors of the downlink rate are also related to external factors, such as the capability and power of the satellite processor. At the same time, it is also related to the allocation of frequency resources by ITU.

Correspondingly, different selection and matching modes of uplink and downlink communication transmission rates can be determined by communication task requirements. Here, four free combinations are listed. Different communication rates can be selected, and the upper and lower communication rates can be combined arbitrarily. There are transmission combinations of uplink low rate and downlink low rate, and there are also transmission combinations of uplink high rate and downlink high rate. Combinations of different communication rates can meet the needs of different communication tasks and communication scenarios.

S205: Send the target data object according to the target data format data.

It can be seen from the above-mentioned technical solutions of the embodiments of the present invention that the present invention determines the target data format corresponding to the target data object through the mapping relationship between the target data valid data field and the virtual channel identifier, and virtualizes the target data object according to the target data format. The channel identifier and the valid data field are nested to obtain target data format data, and then the target data object is sent according to the target data format data. The above technical scheme adopts a nested data transmission frame format, which can simultaneously satisfy the transmission tasks of satellite measurement and control, power feeding and inter-satellite information, simplifies the complexity of the software and hardware systems of satellite communication, and realizes different communication tasks. And the support of communication scenarios, improve the comprehensive ability of communication tasks.

An embodiment of the present invention also provides an apparatus for data processing of small satellites. As shown in FIG. 12, the apparatus includes a data acquisition module 1201, a data identification module 1202, a data format correspondence module 1203, and a data embedding processing module 1204, a data sending module 1205.

Data acquisition module 1201: for acquiring a target data object, and determining a target valid data field of the target data object;

Data identification module 1202: used to determine the target virtual channel identifier corresponding to the target valid data field according to the mapping relationship between the valid data field and the virtual channel identifier, and use the target virtual channel identifier as the target data object. virtual channel identifier;

Data format correspondence module 1203: for determining the target data format corresponding to the target data object according to the mapping relationship between the data object and the preset data format;

Data embedding processing module 1204: for performing nesting processing on the virtual channel identifier and the valid data field of the target data object according to the target data format, to obtain target data format data;

Data sending module 1205: configured to send the target data object according to the target data format data.

Optionally, the data embedding processing module includes:

Task source determination module: used to determine the task source of the target data object;

Data frame format determination module: for determining the data frame format of the valid data field according to the task source of the target data object;

Valid data field generation module: used to process the valid data field according to the data frame format of the valid data field to obtain the processed valid data field;

The module for obtaining target data format data is configured to perform nesting processing on the virtual channel identifier of the target data object and the processed valid data field according to the target data format to obtain target data format data.

Optionally, in an embodiment, the data embedding processing module further includes:

Identifier acquisition module: used to acquire local aerospace identifiers;

Filling target data module: used to fill the local aerospace identifier, the virtual channel identifier of the target data object, and the processed valid data fields into corresponding areas in the target data format, respectively, to obtain the Target data format data.

Optionally, in an embodiment, the data processing apparatus for small satellites further includes:

Data receiving module: used to receive a data object in a preset data format, where the preset data format includes a virtual channel identifier of the data object;

Data type determination module: for determining the data type of the data object according to the virtual channel identifier of the data object;

Execution object determination module: used to determine the execution object of the data object according to the data type of the data object;

Data execution module: used to send the data object to the execution object, so that the execution object executes the data object.

Optionally, in an embodiment, before the data execution module includes:

Judging module: for judging whether the data type of the data object is a filling data type; if so, the data object is not executed;

Determining module: if the data type of the data object is not padding data, execute the data object and send it to the execution object, so that the execution object executes the data object.

Optionally, in an embodiment, the data execution module includes:

Verification module: for verifying the data object if the data type of the data object is a direct instruction type;

Decoding module: used to decode the data object according to the direct instruction frame format if the verification is passed;

Execution module after verification: sending the decoded data object to the execution object, so that the execution object executes the data object.

Optionally, the data format generation module further includes:

Obtaining bit stream data information module: for obtaining the bit stream data information of the target data format data;

Rate determination module: configured to determine the uplink and downlink transmission rates according to the bit stream data information of the target data format data.

Regarding the apparatus in the above-mentioned embodiment, the specific manner in which each module performs operations has been described in detail in the embodiment of the method, and will not be described in detail here.

An embodiment of the present invention provides a device, the device includes a processor and a memory, the memory stores at least one instruction or at least one piece of program, the at least one instruction or the at least one piece of program is loaded and executed by the processor to realize the The data processing method provided by the above method embodiments.

The memory can be used to store software programs and modules, and the processor executes various functional applications and data processing methods by running the software programs and modules stored in the memory. The memory may mainly include a stored program area and a stored data area, wherein the stored program area may store programs required by the system and functions, and the like; the stored data area may store data and the like created according to the use of the device. In addition, the memory may include high-speed random access memory, and may also include non-volatile memory. Accordingly, the memory may also include a memory controller to provide processor access to the memory.

An embodiment of the present invention further provides a storage medium, which can be set outside or inside the processor chip to store at least one instruction and at least one piece of program related to implementing a data processing method in the method embodiment. , a code set or an instruction set, the at least one instruction, the at least one piece of program, the code set or the instruction set is loaded and executed by the processor chip to implement the data processing method provided by the above method embodiments.

Optionally, in this embodiment, the above-mentioned storage medium may use solid-state storage, or may use static random access memory (SRAM), FLASH memory, or various media for storing program codes, such as a storage area provided in the chip.

It should be noted that: the above-mentioned order of the embodiments of the present invention is only for description, and does not represent the advantages and disadvantages of the embodiments. And the foregoing describes specific embodiments of the present specification. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recited in the claims can be performed in an order different from that in the embodiments and still achieve desirable results. Additionally, the processes depicted in the figures do not necessarily require the particular order shown, or sequential order, to achieve desirable results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

Each embodiment in this specification is described in a progressive manner, and the same and similar parts between the various embodiments may be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the system and server embodiments, since they are basically similar to the method embodiments, the description is relatively simple, and for related parts, please refer to the partial descriptions of the method embodiments.

Those of ordinary skill in the art can understand that all or part of the steps of implementing the above embodiments can be completed by hardware, or can be completed by instructing relevant hardware through a program, and the program can be stored in a computer-readable storage medium. The storage medium mentioned may be a read-only memory, a magnetic disk or an optical disk, etc.

It can be seen from the technical solutions provided by the above embodiments of this specification that in the small satellite communication mode, the embodiments of this specification can meet the conditions of multi-link and multi-task data forwarding of satellites, and not only complete the unified forwarding of data for measurement, control and feeding, but also To meet the requirements of different communication tasks and communication scenarios, it not only improves the reliability of communication, but also simplifies the complexity of system communication.

The above are only specific embodiments of the present application, but the protection scope of the present application is not limited to this. should be covered within the scope of protection of this application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims (10)

1. A data processing method for a microsatellite, comprising:

acquiring a target data object, and determining a target effective data domain of the target data object;

determining a target virtual channel identifier corresponding to a target effective data field according to a mapping relation between the effective data field and the virtual channel identifier, and taking the target virtual channel identifier as the virtual channel identifier of the target data object;

determining a target data format corresponding to the target data object according to a mapping relation between the data object and a preset data format;

nesting the virtual channel identifier and the effective data field of the target data object according to the target data format to obtain target data format data;

and sending the target data object according to the target data format data.

2. The data processing method for the small satellite, as claimed in claim 1, wherein the nesting the virtual channel identifier and the valid data field of the target data object according to the target data format to obtain the target data format data comprises:

determining a task source of the target data object;

determining a data frame format of the effective data field according to the task source of the target data object;

processing the effective data field according to the data frame format of the effective data field to obtain a processed effective data field;

and performing nesting processing on the virtual channel identifier of the target data object and the processed effective data field according to the target data format to obtain target data format data.

3. The data processing method for the small satellite as claimed in claim 2, wherein the nesting of the virtual channel identifier of the target data object and the processed valid data field according to the target data format to obtain target data format data comprises:

acquiring a local space identifier;

and respectively filling the local space identifiers, the virtual channel identifiers of the target data objects and the processed effective data fields into corresponding areas in the target data format to obtain the target data format data.

4. A data processing method for a microsatellite according to claim 1, wherein said method further comprises:

receiving a data object in a preset data format, wherein the preset data format comprises a virtual channel identifier of the data object;

determining a data type of the data object according to the virtual channel identifier of the data object;

determining an execution object of the data object according to the data type of the data object;

and sending the data object to the execution object so that the execution object executes the data object.

5. The data processing method for the microsatellite according to claim 4, wherein before sending the data object to the execution object to cause the execution object to execute the data object, further comprising:

judging whether the data type of the data object is a filling data type;

if yes, the data object is not executed;

if not, the step of sending the data object to the execution object is executed, so that the execution object executes the data object.

6. The data processing method for the microsatellite according to claim 4 or 5, wherein said sending said data object to said execution object to cause said execution object to execute said data object comprises:

if the data type of the data object is a direct instruction type, verifying the data object;

if the check is passed, decoding the data object according to a direct instruction frame format;

and sending the decoded data object to the execution object so that the execution object executes the data object.

7. The data processing method for the small satellite as claimed in claim 1, wherein after determining the target data format corresponding to the target data object according to the mapping relationship between the data object and the preset data format, the method further comprises:

acquiring bit stream data information of the target data format data;

and determining the transmission rate of the uplink and the downlink according to the bit stream data information of the target data format data.

8. A data processing apparatus for a microsatellite, said apparatus comprising:

a data acquisition module: the system comprises a data acquisition module, a data storage module and a data processing module, wherein the data acquisition module is used for acquiring a target data object and determining a target effective data field of the target data object;

a data identification determination module: the virtual channel identifier is used for determining a target virtual channel identifier corresponding to a target effective data domain according to the mapping relation between the effective data domain and the virtual channel identifier, and the target virtual channel identifier is used as the virtual channel identifier of the target data object;

a data format generation module: the device comprises a data object, a target data format and a data processing module, wherein the data object is used for generating a data object;

the data embedding processing module: the virtual channel identifier and the effective data field of the target data object are nested according to the target data format to obtain target data format data;

a data sending module: for sending the target data object according to the target data format data.

9. A data processing device for a microsatellite comprising a processor and a memory having stored therein at least one instruction, at least one program, set of codes or set of instructions, which is loaded and executed by the processor to implement the data processing method according to any one of claims 1 to 7.

10. A storage medium having stored therein at least one instruction, at least one program, set of codes, or set of instructions, which is loaded and executed by a processor to implement the data processing method according to any one of claims 1 to 7.

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