Target monitoring methods, systems, and media

Abstract

The application provides a target monitoring method, system and medium, wherein the method comprises: after a second satellite receives a remote sensing imaging task broadcast by a first satellite, determining whether an attitude condition corresponding to the remote sensing imaging task is met, the attitude condition being used to indicate that a position attitude of the second satellite can execute the remote sensing imaging task earliest among m satellites; when it is determined that the attitude condition is met, executing the remote sensing imaging task to obtain a remote sensing image of a target area, and performing on-orbit identification on the remote sensing image to obtain corresponding identification information; when the identification information meets a preset alarm condition, generating a corresponding early warning message and broadcasting the early warning message to the space-based system, so as to send the early warning message to a ground station in the territory for processing by a third satellite in the space-based system. In this way, technical problems in the prior art, such as the need for occupying more transmission arc segment resources for a remote sensing image, long transmission time consumption and reduced timeliness of target monitoring, can be solved.

Description

Technical Field

[0001] This application relates to the field of satellite remote sensing technology, specifically to a target monitoring method, system, and medium. Background Technology

[0002] Satellite remote sensing technology can provide target monitoring and situational awareness capabilities across the entire airspace and time domain. Remote sensing monitoring, in particular, can be used to track target activities and behavioral trajectories, offering flexibility, speed, and versatility, and providing a powerful monitoring tool for key areas and high-value targets on the ground.

[0003] Traditional remote sensing satellite monitoring schemes require transmitting remote sensing images within the country's borders and then establishing a satellite-to-ground link via ground stations to download the images. However, in practice, it has been found that when the amount of remote sensing image data is large, it requires significant transmission resources, such as satellite-to-ground link usage and long transmission times. Target monitoring analysis can only be performed after all the remote sensing image data has arrived. This reliance on long satellite-to-ground link transmission times reduces the timeliness of target monitoring. Summary of the Invention

[0004] In view of this, the embodiments of this application aim to provide a target monitoring method, system and medium that can solve the technical problems in the prior art, such as remote sensing images requiring a large amount of transmission arc resources, long transmission time and reduced timeliness of target monitoring.

[0005] In a first aspect, this application provides a target monitoring method applied to a space-based system, wherein the space-based system comprises m satellites, where m is a positive integer, and the method includes: After receiving the remote sensing imaging task broadcast by the first satellite, the second satellite determines whether the attitude conditions corresponding to the remote sensing imaging task are met. The attitude conditions are used to indicate that the position and attitude of the second satellite can execute the remote sensing imaging task earliest among the m satellites. The first satellite is the satellite among the m satellites that communicates with the ground station in the country at a preset minimum elevation angle. When the second satellite determines that the attitude conditions are met, it performs the remote sensing imaging task to acquire remote sensing images of the target area and performs on-orbit identification on the remote sensing images to obtain corresponding identification information. When the identification information meets the preset alarm conditions, the second satellite generates a corresponding early warning message and broadcasts it to the space-based system, so that the early warning message can be sent to the domestic ground station for processing by the third satellite in the space-based system. The third satellite is any one of the m satellites that can communicate with the domestic ground station.

[0006] In some embodiments, determining whether the attitude conditions corresponding to the remote sensing imaging task are met includes: The state information of the second satellite is predicted and calculated to obtain the state information of the second satellite at different times, and the state information includes at least the position and attitude data of the second satellite. Based on the position and attitude data of the second satellite at different times, determine whether the position and attitude of the second satellite can be the earliest among the m satellites to perform the remote sensing imaging task.

[0007] In some embodiments, the identification information includes at least one of the target type, target size, target location, target speed, and target heading in the target area, and the identification information satisfying a preset alarm condition includes at least one of the following: When the identification information includes the target type, if it is determined that the target type is not within the preset type range, then the identification information is determined to meet the preset alarm conditions. When the identification information includes the target size, if it is determined that the target size is not within a preset size range, then the identification information is determined to meet a preset alarm condition. When the identification information includes the target location, if the target location is not within a preset location range, then the identification information is determined to meet the preset alarm conditions. When the identification information includes the target speed, if the target speed is not within the preset speed range, then the identification information is determined to meet the preset alarm conditions. When the identification information includes the target heading, if the target heading is not within the preset heading range, then the identification information is determined to meet the preset alarm conditions.

[0008] In some embodiments, the method further includes: After receiving monitoring information of the target area from the ground station within the territory, the first satellite generates the corresponding remote sensing imaging task and broadcasts it to the space-based system, so that the second satellite in the space-based system can receive the remote sensing imaging task broadcast by the first satellite.

[0009] In some embodiments, the m satellites in the space-based system have the same satellite inclination angle and are distributed in equal phase on the same orbital plane.

[0010] Secondly, this application provides a space-based system comprising m satellites, where m is a positive integer. Each satellite includes at least an inter-satellite system, an on-orbit identification module, a remote sensing payload module, and a satellite-based computing module, wherein: The inter-satellite system of the second satellite is used to receive remote sensing imaging missions broadcast by the first satellite, which is one of the m satellites that communicates with ground stations within the territory at a preset minimum elevation angle. The satellite's satellite computing module is used to determine whether the attitude conditions corresponding to the remote sensing imaging task are met. The attitude conditions are used to indicate that the position and attitude of the second satellite can execute the remote sensing imaging task earliest among the m satellites. The remote sensing payload module of the second satellite is used to perform the remote sensing imaging task to acquire remote sensing images of the target area when the attitude conditions are met. The on-orbit identification module of the second satellite is used to perform on-orbit identification on the remote sensing image to obtain corresponding identification information; when the identification information meets the preset alarm conditions, a corresponding early warning message is generated. The inter-satellite system of the second satellite is also used to broadcast the early warning message to the space-based system, so that the early warning message can be sent to the domestic ground station for processing by a third satellite in the space-based system. The third satellite is any one of the m satellites that can communicate with the domestic ground station.

[0011] In some embodiments, the satellite further includes a telemetry, tracking, and command (TT&C) system, wherein: The first satellite's telemetry and control system is used to receive monitoring information of the target area sent by the domestic ground station through the telemetry and control antenna of the telemetry and control system, and then generate the corresponding remote sensing imaging task. The inter-satellite system of the first satellite is also used to broadcast the remote sensing imaging mission to the space-based system, so that the second satellite in the space-based system can receive the remote sensing imaging mission broadcast by the first satellite.

[0012] Thirdly, this application provides a target monitoring system, characterized in that it includes a space-based system and a ground-based system, wherein the space-based system is the space-based system provided in the second aspect above, and the ground-based system includes at least a domestic ground station.

[0013] In some embodiments, the domestic ground station includes a ground station antenna, a mission planning system, and a message alarm system, wherein: The mission planning system is used to plan and generate monitoring information of the target area by the domestic ground stations; The ground station antenna is used to send monitoring information of the target area to the first satellite in the space-based system and to receive early warning messages sent by the third satellite in the space-based system. The message alarm system is used to perform corresponding alarm processing based on the warning message.

[0014] For any content not introduced or described in the embodiments of this application, please refer to the relevant descriptions in the foregoing method embodiments; they will not be repeated here.

[0015] Fourthly, this application provides a computer-readable storage medium having computer program instructions stored thereon, which, when executed by a processor, implement the steps of the above-described target monitoring method.

[0016] The technical solution provided in this application embodiment may include the following beneficial effects: After receiving the remote sensing imaging task broadcast by the first satellite, the second satellite of the space-based system determines whether the attitude conditions corresponding to the remote sensing imaging task are met. The attitude conditions are used to indicate that the position and attitude of the second satellite can execute the remote sensing imaging task earliest among the m satellites. The first satellite is the satellite among the m satellites that communicates with the domestic ground station at a preset minimum elevation angle. When the second satellite determines that the attitude conditions are met, it executes the remote sensing imaging task to acquire remote sensing images of the target area and performs on-orbit identification on the remote sensing images to obtain corresponding identification information. When the identification information meets the preset alarm conditions, the second satellite generates a corresponding early warning message and broadcasts it to the space-based system, so that the early warning message can be sent to the domestic ground station for processing by a third satellite in the space-based system. The third satellite is any satellite among the m satellites that can communicate with the domestic ground station. In this way, this application can quickly acquire remote sensing images based on multiple satellites in the space-based system, perform on-orbit identification and early warning message generation on the remote sensing images, and send the generated early warning messages to the domestic ground station for processing, ensuring that the remote sensing images do not participate in the transmission of the satellite-to-ground link, which significantly reduces the problems of excessive occupation of transmission arc resources and long transmission time in the prior art, and also improves the timeliness of target monitoring.

[0017] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, specific embodiments of this application are given below. Attached Figure Description

[0018] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings.

[0019] Figure 1 This is a flowchart illustrating a target monitoring method provided in an embodiment of this application.

[0020] Figure 2 This is a schematic diagram of the structure of a target monitoring system provided in an embodiment of this application.

[0021] Figure 3This is a schematic diagram of the structure of a target monitoring device provided in an embodiment of this application. Detailed Implementation

[0022] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0023] Unless otherwise defined, the technical or scientific terms used in the embodiments of this specification shall have the ordinary meaning understood by one of ordinary skill in the art to which this specification pertains. The terms "first," "second," and similar terms used in the embodiments of this specification do not indicate any order, quantity, or importance, but are merely used to avoid confusion of constituent elements.

[0024] Unless the context otherwise requires, throughout this specification, "a plurality of" means "at least two," and "including" is interpreted as open-ended or encompassing, that is, "including, but not limited to." In the description of this specification, terms such as "one embodiment," "some embodiments," "exemplary embodiment," "example," "specific example," or "some examples" are intended to indicate that a particular feature, structure, material, or characteristic associated with that embodiment or example is included in at least one embodiment or example of this specification. The illustrative representations of the above terms do not necessarily refer to the same embodiment or example.

[0025] Exemplary embodiments of the present application will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present application are shown in the drawings, it should be understood that the present application may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this application will be thorough and complete, and will fully convey the scope of the present application to those skilled in the art.

[0026] In the process of filing this application, the applicant also discovered that in existing technologies, when the data volume of remote sensing images is large, the downlink to ground stations requires a significant amount of transmission arc resources and takes a long time. Furthermore, the construction of commercial low-Earth orbit (LEO) satellite networks and their data transmission place greater pressure on the construction of ground stations and multi-satellite tracking. In addition, individual satellites, especially LEO microsatellites, are not always over the country's borders. After a satellite leaves the country, the transmission of effective information can only continue after the satellite re-enters the field of view, thus compromising the timeliness of satellite-to-ground link transmission. To address these issues, this application proposes a target monitoring method, system, and medium.

[0027] Please see Figure 1This is a flowchart illustrating a target monitoring method provided in an embodiment of this application. Figure 1 The method shown is applied to a space-based system that may include m satellites within the same network. For example... Figure 1 The method shown may include the following implementation steps: S101. After receiving the remote sensing imaging task broadcast by the first satellite, the second satellite determines whether the attitude conditions corresponding to the remote sensing imaging task are met. The attitude conditions are used to indicate that the position and attitude of the second satellite can execute the remote sensing imaging task earliest among the m satellites. The first satellite is the satellite among the m satellites that communicates with the ground station in the territory at a preset minimum elevation angle.

[0028] The space-based system described in this application may include m satellites, where m is a pre-defined positive integer set by the system according to actual conditions. For example, when m is a positive integer greater than or equal to 3, the m satellites may include a first satellite, a second satellite, a third satellite, etc., and this application does not impose further limitations on this. This application does not limit the specific deployment requirements of the m satellites. For example, the m satellites may have the same inclination angle, or m satellites with the same inclination angle may be grouped into the same space-based system. To meet the requirement of full coverage monitoring of key areas / key targets, the m satellites are usually evenly distributed with equal phase on the same specific orbital plane, and this application does not impose further limitations on this.

[0029] The first satellite mentioned above in this application may refer to one of the m satellites in a space-based system that can communicate with a ground station within the territory at a preset minimum elevation angle. This minimum elevation angle is preset and customized by the system or the user according to the actual situation. It may be an empirical value set based on user experience, or a statistical value calculated based on a series of experimental data, such as the aforementioned minimum elevation angle of 5°.

[0030] In practical applications, users can plan the target area to be monitored or the target to be monitored within that target area (also referred to as the target object) through domestic ground stations, generate monitoring information for that target area, and upload the monitoring information to the aforementioned first satellite. The aforementioned target area is a key monitoring area set by the system or user-defined criteria. The aforementioned target or target object is a target / object to be analyzed set by the system or user-defined criteria, which may include, but is not limited to, ships, aircraft, airports, ports, or other custom target types, etc., which this application does not limit or elaborate on further. Correspondingly, after receiving the monitoring information of the aforementioned target area through the telemetry and control antenna of the telemetry and control system, the aforementioned first satellite can generate a corresponding remote sensing imaging task based on the monitoring information of the aforementioned target area. This remote sensing imaging task is used to instruct the acquisition of remote sensing images of the target area for monitoring and analysis of the corresponding targets in the target area; for example, the aforementioned remote sensing imaging task may include, but is not limited to, information such as shooting time, shooting the target area to be monitored (e.g., the latitude and longitude of the target area), shooting angle (e.g., shooting the solar altitude angle), and shooting duration, etc., which this application does not limit or elaborate on further. After acquiring the aforementioned remote sensing imaging task, the first satellite can enter its own inter-satellite system and broadcast the task to the space-based system, enabling corresponding satellites in the space-based system to receive and process the task. This application does not limit the specific transmission method of the inter-satellite system; for example, microwave transmission, laser transmission, or other custom transmission methods may be used. For instance, microwave transmission may be used to broadcast the remote sensing imaging task to other satellites in the space-based system. For ease of description, this application uses the example of a second satellite in the space-based system receiving the remote sensing imaging task to illustrate the relevant content. Other satellites can similarly receive and process the remote sensing imaging task, and this application does not constitute a limitation.

[0031] After receiving the remote sensing imaging task, the second satellite can determine whether it meets the attitude conditions corresponding to the task. This application does not limit the specific implementation method for determining the attitude conditions. For example, this application uses the satellite's satellite computing module (also called a satellite computer) to predict and calculate the satellite's state information, obtaining the satellite's state information at different times. Specifically, this application can use a preset orbit extrapolation algorithm to calculate the satellite's historical state information and predict its state information at different future times. The state information can include the satellite's state data at different times, which may include, but is not limited to, the satellite's position, attitude, velocity, number of orbits, or other custom data; this application does not impose further limitations on this. Next, based on the predicted state information of the second satellite at different times (specifically, position and attitude data), this application determines whether the second satellite's position and attitude among the m satellites will be the first to execute the remote sensing imaging task, that is, whether the second satellite will be the first to meet the attitude conditions corresponding to the remote sensing imaging task. If so, step S102 can be continued.

[0032] In some alternative embodiments, after determining that the attitude conditions corresponding to the remote sensing imaging task are met, the second satellite may also send a stop imaging task to the space-based system. Specifically, the second satellite sends the stop imaging task to other satellites in the space-based system through its own inter-satellite system. The stop imaging task is used to instruct the cessation of broadcasting / transmitting the remote sensing imaging task and to stop other satellites in the space-based system from receiving and processing the remote sensing imaging task. This application does not impose further limitations on this aspect.

[0033] S102. When the second satellite determines that the attitude conditions are met, it performs the remote sensing imaging task to acquire remote sensing images of the target area and performs on-orbit identification on the remote sensing images to obtain corresponding identification information.

[0034] When the aforementioned second satellite meets the above attitude conditions, it can execute / respond to the aforementioned remote sensing imaging task and acquire remote sensing images of the target area. These images can also be remote sensing photographs. For ease of description, this application uses remote sensing photographs as an example to illustrate the relevant content, but this does not constitute a limitation. Furthermore, the second satellite can utilize its on-orbit recognition capabilities to perform on-orbit recognition on the aforementioned remote sensing images and obtain corresponding recognition information. Specifically, for example, this application can use a preset remote sensing scene classification algorithm to perform scene analysis on the aforementioned remote sensing images and obtain the target images corresponding to the target areas. Then, it can use an on-orbit recognition algorithm (such as the YOLO model) to perform on-orbit recognition and calculation on the target images corresponding to the aforementioned target areas and obtain the corresponding recognition information. The aforementioned recognition information may include, but is not limited to, target type, target size, target location (such as target latitude and longitude), target speed, target heading, or other custom information used to describe the target or target object in the target area. This application does not impose further limitations on this.

[0035] S103. When the identification information meets the preset alarm conditions, the second satellite generates a corresponding early warning message and broadcasts it to the space-based system, so as to use the third satellite in the space-based system to send the early warning message to the domestic ground station for processing. The third satellite is any one of the m satellites that can communicate with the domestic ground station.

[0036] After obtaining the identification information, the second satellite can determine whether the identification information meets the corresponding preset alarm conditions. The preset alarm conditions are pre-defined warning conditions set by the system, which may include threshold judgments. Specifically, they may include, but are not limited to, any one or more combinations of the following possible implementation methods: In one implementation, the identification information includes a target type, and the preset alarm condition includes the target type not being within a preset type range. After obtaining the target type, this application can determine whether the target type is within a preset type range, such as a preset type library. If it is not, it is determined that the identification information does not meet the preset alarm condition, and the process can end; otherwise, it is determined that the identification information meets the preset alarm condition, and subsequent processes can continue.

[0037] In another embodiment, the identification information includes the target size, and the preset alarm condition includes the target size not being within a preset size range. After obtaining the target size, this application can determine whether the target size is within a preset size range, such as whether it exceeds a preset size threshold. If it is not, it can be determined that the identification information does not meet the preset alarm condition, and the process can end; otherwise, it can be determined that the identification information meets the preset alarm condition, and subsequent processes can continue.

[0038] In another embodiment, the identification information includes the target location (e.g., target latitude and longitude), and the preset alarm condition may include the target location not being within a preset location range. After obtaining the target location, this application can determine whether the target location is within the preset location range, for example, whether the target latitude and longitude exceed a preset latitude and longitude threshold. If not, it can be determined that the identification information does not meet the preset alarm condition, and the process can end; otherwise, it can be determined that the identification information meets the preset alarm condition, and subsequent processes can continue.

[0039] In another embodiment, the identification information includes the target speed, and the preset alarm condition includes the target speed not being within a preset speed range. After obtaining the target speed, this application can determine whether the target speed is within the preset speed range, such as whether it exceeds a preset speed threshold. If it is not, it can be determined that the identification information does not meet the preset alarm condition, and the process can end; otherwise, it can be determined that the identification information meets the preset alarm condition, and subsequent processes can continue.

[0040] In another embodiment, the identification information includes the target heading, and the preset alarm condition includes the target heading not being within a preset heading range. After obtaining the target heading, this application can determine whether the target heading is within the preset heading range, for example, whether the target heading deviates from / exceeds a preset heading value. If not, it can be determined that the identification information does not meet the preset alarm condition, and the process can end; otherwise, it can be determined that the identification information meets the preset alarm condition, and subsequent processes can continue.

[0041] After determining that the aforementioned identification information meets the aforementioned preset alarm conditions, this application can generate a corresponding early warning message. Specifically, for example, the identification information can be processed using a specific communication protocol for framing and encryption encoding to generate early warning messages for target types that suddenly appear or disappear in the target area. This early warning message can then enter the inter-satellite system of the second satellite. The second satellite broadcasts the early warning message to the space-based system via its own inter-satellite system, specifically to other satellites in the space-based system. Correspondingly, other satellites in the space-based system receive the early warning message and forward it to domestic ground stations. Specifically, a third satellite in the space-based system capable of communicating with domestic ground stations—for example, the first satellite to receive the early warning message broadcast by the second satellite and capable of communicating with domestic ground stations—can forward / send the early warning message to the domestic ground station for processing. Correspondingly, after receiving the early warning message, the domestic ground station can parse it and perform corresponding early warning processing, such as ground personnel intervening to repair / maintain the corresponding early warning prompts. This application does not further limit or elaborate on this aspect.

[0042] As can be seen, the proposed solution utilizes multiple satellites within the network for target monitoring. Remote sensing images are not transmitted via the satellite-to-ground link; instead, the satellites' on-orbit identification capabilities transmit the corresponding identification information to domestic ground stations in the form of early warning messages. This significantly reduces the problems associated with satellite-to-ground link transmission, such as excessive resource consumption, long transmission times, and over-reliance on ground stations. Furthermore, utilizing a low-Earth orbit multi-satellite network minimizes situations where there are no satellites over the country's borders, improving the rapid inter-satellite transmission of remote sensing imaging data and early warning messages, reducing human intervention, and enhancing the timeliness of target monitoring.

[0043] By implementing the embodiments of this application, after the second satellite receives the remote sensing imaging task broadcast by the first satellite, it determines whether the attitude conditions corresponding to the remote sensing imaging task are met. The attitude conditions are used to indicate that the position and attitude of the second satellite can execute the remote sensing imaging task earliest among the m satellites. The first satellite is the satellite among the m satellites that communicates with the domestic ground station at a preset minimum elevation angle. When the second satellite determines that the attitude conditions are met, it executes the remote sensing imaging task to acquire remote sensing images of the target area and performs on-orbit identification on the remote sensing images to obtain corresponding identification information. When the identification information meets the preset alarm conditions, the second satellite generates a corresponding early warning message and broadcasts it to the space-based system, so that the early warning message can be sent to the domestic ground station for processing by a third satellite in the space-based system. The third satellite is any satellite among the m satellites that can communicate with the domestic ground station. In this way, this application can quickly acquire remote sensing images based on multiple satellites in the space-based system, perform on-orbit identification and early warning message generation on the remote sensing images, and send the generated early warning messages to the domestic ground station for processing, ensuring that the remote sensing images do not participate in the transmission of the satellite-to-ground link, which significantly reduces the problems of excessive occupation of transmission arc resources and long transmission time in the prior art, and also improves the timeliness of target monitoring.

[0044] Based on the foregoing embodiments, please refer to Figure 2 This is a schematic diagram of the structure of a target monitoring system provided in an embodiment of this application. Figure 2The target monitoring system 20 shown may include a space-based system 100 and a ground-based system 200. The space-based system 100 may include m satellites within the same network, where m is a pre-defined positive integer based on actual conditions. For example, when m is greater than or equal to 3, the m satellites may include a first satellite, a second satellite, and a third satellite; this application does not impose further limitations on this. Each satellite may include an inter-satellite system 101, an on-orbit identification module 102, a remote sensing payload module 103, a satellite service computing module 104, and a telemetry, tracking, and command (TT&C) system 105. The ground-based system 200 may include domestic ground stations, which may specifically include, but are not limited to, ground station antennas 201, mission planning systems 202, and message alarm systems 203. Wherein: The inter-satellite system 101 of the second satellite is used to receive remote sensing imaging missions broadcast by the first satellite, which is one of the m satellites that communicates with the ground station in the territory at a preset minimum elevation angle. The second satellite's satellite computing module 104 is used to determine whether the attitude conditions corresponding to the remote sensing imaging task are met. The attitude conditions are used to indicate that the position and attitude of the second satellite can execute the remote sensing imaging task earliest among the m satellites. The remote sensing payload module 103 of the second satellite is used to perform the remote sensing imaging task to acquire remote sensing images of the target area when the attitude conditions are met. The on-orbit identification module 102 of the second satellite is used to perform on-orbit identification on the remote sensing image to obtain corresponding identification information; when the identification information meets the preset alarm conditions, a corresponding early warning message is generated. The inter-satellite system 101 of the second satellite is also used to broadcast the early warning message to the space-based system, so that the early warning message can be sent to the domestic ground station for processing by a third satellite in the space-based system. The third satellite is any one of the m satellites that can communicate with the domestic ground station.

[0045] In practical applications, the user or ground-based system 200 plans and generates monitoring information of the target area by domestic ground stations through the mission planning system 202 of the ground-based system 200, and transmits the monitoring information to the first satellite through the ground station antenna 201 in the ground-based system 200. The first satellite can refer to one of the m satellites of the space-based system 100 that can communicate with the domestic ground station at a preset minimum elevation angle. Correspondingly, the first satellite receives the monitoring information transmitted by the domestic ground station through the telemetry and control antenna of its own telemetry and control system 105. Then, the first satellite analyzes and processes the monitoring information through its own satellite computing module 104 to generate a remote sensing imaging task for the target area; and determines whether the satellite currently possesses the attitude conditions to meet the remote sensing imaging task. If so, the first satellite itself performs the remote sensing imaging task to achieve target monitoring. Conversely, if not, the aforementioned remote sensing imaging task enters the inter-satellite system 101 of the first satellite. The first satellite broadcasts the remote sensing imaging task to the space-based system 100 through its own inter-satellite system 101, thereby distributing the remote sensing imaging task to each satellite in the space-based system 100. Correspondingly, each satellite in the space-based system 100 can receive the remote sensing imaging task through its own inter-satellite system 101. For example, the inter-satellite system 101 of the second satellite receives the remote sensing imaging task and processes it through other modules of the second satellite. Specifically, the second satellite uses its own satellite service computing module 104 to determine whether the attitude conditions corresponding to the remote sensing imaging task are met, and uses the remote sensing payload module 103 and on-orbit identification module 102 of the second satellite to acquire the corresponding remote sensing images, perform on-orbit identification on the remote sensing images, and generate corresponding early warning messages, etc. For content not introduced or described in the embodiments of this application, please refer to the foregoing. Figure 1 The relevant descriptions in the embodiments are not subject to further limitation or detail in this application.

[0046] In some optional embodiments, the third satellite in the space-based system 100 can send / transmit the aforementioned early warning message to the ground station of the ground-based system 200 via its own inter-satellite system 101. Correspondingly, the ground-based system 200 can receive the aforementioned early warning message via the ground station antenna 201 and transmit it to the message early warning system 203 for processing. For example, the message early warning system 203 can perform corresponding early warning processing based on the aforementioned early warning message. Specifically, it can parse the aforementioned early warning message and hand it over to ground personnel for maintenance or processing of corresponding early warning prompts, etc. This application does not impose further limitations or details on this.

[0047] For any content not described or introduced in the embodiments of this application, please refer to the foregoing. Figure 1 The relevant descriptions in the embodiments will not be repeated here.

[0048] By implementing the embodiments of this application, after the second satellite receives the remote sensing imaging task broadcast by the first satellite, it determines whether the attitude conditions corresponding to the remote sensing imaging task are met. The attitude conditions are used to indicate that the position and attitude of the second satellite can execute the remote sensing imaging task earliest among the m satellites. The first satellite is the satellite among the m satellites that communicates with the domestic ground station at a preset minimum elevation angle. When the second satellite determines that the attitude conditions are met, it executes the remote sensing imaging task to acquire remote sensing images of the target area and performs on-orbit identification on the remote sensing images to obtain corresponding identification information. When the identification information meets the preset alarm conditions, the second satellite generates a corresponding early warning message and broadcasts it to the space-based system, so that the early warning message can be sent to the domestic ground station for processing by a third satellite in the space-based system. The third satellite is any satellite among the m satellites that can communicate with the domestic ground station. In this way, this application can quickly acquire remote sensing images based on multiple satellites in the space-based system, perform on-orbit identification and early warning message generation on the remote sensing images, and send the generated early warning messages to the domestic ground station for processing, ensuring that the remote sensing images do not participate in the transmission of the satellite-to-ground link, which significantly reduces the problems of excessive occupation of transmission arc resources and long transmission time in the prior art, and also improves the timeliness of target monitoring.

[0049] Please see Figure 3 This is a schematic diagram of the structure of a target monitoring device provided in an embodiment of this application. For example, as shown... Figure 3 As shown, the device 300 includes a memory 301 and a processor 302. The memory 301 stores executable program code 3011, and the processor 302 is used to call and execute the executable program code 3011 to perform the above-mentioned target monitoring method.

[0050] In an exemplary embodiment, the apparatus 300 may be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field-programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components to perform the target monitoring method described above.

[0051] Understandably, the processor 302 in this application embodiment can be an integrated circuit chip with signal processing capabilities. In implementation, each step of the above method embodiment can be completed by integrated logic circuits in the processor's hardware or by software instructions. The processor described above can be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components.

[0052] Understandably, the memory 301 in the embodiments of this application can be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory. The non-volatile memory can be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. The volatile memory can be random access memory (RAM), which is used as an external cache. By way of example, but not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDRSDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous linked dynamic random access memory (SLDRAM), and direct rambus RAM (DR RAM). It should be noted that the memory used in the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0053] The aforementioned device can be a standalone electronic device or a part of a standalone electronic device. For example, in one embodiment, the device can be an integrated circuit (IC) or a chip, wherein the integrated circuit can be a single IC or a collection of multiple ICs. The chip can include, but is not limited to, the following types: GPU (Graphics Processing Unit), CPU (Central Processing Unit), FPGA (Field Programmable Gate Array), DSP (Digital Signal Processor), ASIC (Application Specific Integrated Circuit), and SoC (System on Chip). The aforementioned integrated circuit or chip can be used to execute executable instructions (or code) to implement the aforementioned target monitoring method. The executable instructions can be stored in the integrated circuit or chip or obtained from other devices or equipment. For example, the integrated circuit or chip includes a processor, memory, and an interface for communicating with other devices. The executable instructions can be stored in the memory, and when the executable instructions are executed by the processor, the above-mentioned target monitoring method can be implemented; or, the integrated circuit or chip can receive the executable instructions through the interface and transmit them to the processor for execution to implement the above-mentioned target monitoring method.

[0054] In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions is also provided, such as a memory 301 including instructions, which can be executed by a processor 302 of the device 300 to complete the above-described upper-level target monitoring method. For example, the non-transitory computer-readable storage medium may be a ROM, random access memory (RAM), CD-ROM, magnetic tape, floppy disk, and optical data storage device, etc.

[0055] This application embodiment can divide the system / device into functional modules according to the above method embodiment. For example, each function can be assigned to a separate module, or two or more functions can be integrated into a processing module. The integrated module can be implemented in hardware. It should be noted that the module division in this embodiment is illustrative and only represents one logical functional division. In actual implementation, there may be other division methods. When dividing each functional module according to its corresponding function, the corresponding system / device may include: a processing module and a communication module, etc.

[0056] It should be noted that all relevant content of each step involved in the above method embodiments can be referenced from the functional description of the corresponding functional module, and will not be repeated here. The apparatus provided in this embodiment is used to execute the above-described target monitoring method, and therefore can achieve the same effect as the above-described implementation method.

[0057] In another exemplary embodiment, a computer program product is also provided, the computer program product comprising a computer program executable by a programmable device, the computer program having a code portion for performing the target monitoring method described above when executed by the programmable device.

[0058] It should be noted that the descriptions of the storage media, devices, and systems described above are similar to those of the method embodiments described above, and have similar beneficial effects. For technical details not disclosed in the storage media, storage media, and device embodiments of this application, please refer to the descriptions of the method embodiments of this application for understanding.

[0059] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of this application. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed in this application. The specification and embodiments are to be considered exemplary only, and the true scope and spirit of this application are indicated by the following claims.

[0060] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications or equivalent substitutions made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A target monitoring method, characterized in that, Applied to a space-based system comprising m satellites, where m is a positive integer, the method includes: After receiving the remote sensing imaging task broadcast by the first satellite, the second satellite determines whether the attitude conditions corresponding to the remote sensing imaging task are met. The attitude conditions are used to indicate that the position and attitude of the second satellite can execute the remote sensing imaging task earliest among the m satellites. The first satellite is the satellite among the m satellites that communicates with the ground station in the country at a preset minimum elevation angle. When the second satellite determines that the attitude conditions are met, it performs the remote sensing imaging task to acquire remote sensing images of the target area and performs on-orbit identification on the remote sensing images to obtain corresponding identification information. When the identification information meets the preset alarm conditions, the second satellite generates a corresponding early warning message and broadcasts it to the space-based system, so that the early warning message can be sent to the domestic ground station for processing by the third satellite in the space-based system. The third satellite is any one of the m satellites that can communicate with the domestic ground station.

2. The method according to claim 1, characterized in that, Determining whether the attitude conditions corresponding to the remote sensing imaging task are met includes: The state information of the second satellite is predicted and calculated to obtain the state information of the second satellite at different times. The state information includes at least the position and attitude data of the second satellite. Based on the position and attitude data of the second satellite at different times, determine whether the position and attitude of the second satellite can be the earliest among the m satellites to perform the remote sensing imaging task.

3. The method according to claim 1, characterized in that, The identification information includes at least one of the target type, target size, target location, target speed, and target heading in the target area. The identification information satisfying a preset alarm condition includes at least one of the following: When the identification information includes the target type, if it is determined that the target type is not within the preset type range, then the identification information is determined to meet the preset alarm conditions. When the identification information includes the target size, if it is determined that the target size is not within a preset size range, then the identification information is determined to meet a preset alarm condition. When the identification information includes the target location, if the target location is not within a preset location range, then the identification information is determined to meet the preset alarm conditions. When the identification information includes the target speed, if the target speed is not within the preset speed range, then the identification information is determined to meet the preset alarm conditions. When the identification information includes the target heading, if the target heading is not within the preset heading range, then the identification information is determined to meet the preset alarm conditions.

4. The method according to claim 1, characterized in that, The method further includes: After receiving monitoring information of the target area from the ground station within the territory, the first satellite generates the corresponding remote sensing imaging task and broadcasts it to the space-based system, so that the second satellite in the space-based system can receive the remote sensing imaging task broadcast by the first satellite.

5. The method according to any one of claims 1-4, characterized in that, The m satellites in the space-based system have the same inclination angle and are distributed in equal phase on the same orbital plane.

6. A space-based system, characterized in that, It includes m satellites, where m is a positive integer. Each satellite includes at least an inter-satellite system, an on-orbit identification module, a remote sensing payload module, and a satellite-based computing module, wherein: The inter-satellite system of the second satellite is used to receive remote sensing imaging missions broadcast by the first satellite, which is one of the m satellites that communicates with ground stations within the territory at a preset minimum elevation angle. The satellite's satellite computing module is used to determine whether the attitude conditions corresponding to the remote sensing imaging task are met. The attitude conditions are used to indicate that the position and attitude of the second satellite can execute the remote sensing imaging task earliest among the m satellites. The remote sensing payload module of the second satellite is used to perform the remote sensing imaging task to acquire remote sensing images of the target area when the attitude conditions are met. The on-orbit identification module of the second satellite is used to perform on-orbit identification on the remote sensing image to obtain corresponding identification information; when the identification information meets the preset alarm conditions, a corresponding early warning message is generated. The inter-satellite system of the second satellite is also used to broadcast the early warning message to the space-based system, so that the early warning message can be sent to the domestic ground station for processing by a third satellite in the space-based system. The third satellite is any one of the m satellites that can communicate with the domestic ground station.

7. The space-based system according to claim 6, characterized in that, The satellite also includes a telemetry, tracking, and command (TT&C) system, in which: The first satellite's telemetry and control system is used to receive monitoring information of the target area sent by the domestic ground station through the telemetry and control antenna of the telemetry and control system, and then generate the corresponding remote sensing imaging task. The inter-satellite system of the first satellite is also used to broadcast the remote sensing imaging mission to the space-based system, so that the second satellite in the space-based system can receive the remote sensing imaging mission broadcast by the first satellite.

8. A target monitoring system, characterized in that, It includes a space-based system and a ground-based system, wherein the space-based system is the space-based system as described in claim 6 or 7 above, and the ground-based system includes at least a ground station within the territory.

9. The target monitoring system according to claim 8, characterized in that, The domestic ground station includes a ground station antenna, a mission planning system, and a message alarm system, wherein: The mission planning system is used to plan and generate monitoring information of the target area by the domestic ground stations; The ground station antenna is used to send monitoring information of the target area to the first satellite in the space-based system and to receive early warning messages sent by the third satellite in the space-based system. The message alarm system is used to perform corresponding alarm processing based on the warning message.

10. A computer storage medium storing computer program instructions thereon, characterized in that, When the computer program instructions are executed by the processor, they implement the steps of the method according to any one of claims 1 to 5.

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