Time period leasing system and method for remote sensing satellite data acquisition

Abstract

The invention discloses a time period leasing system and method for remote sensing satellite data acquisition. The remote sensing satellite data acquisition time period leasing system comprises a demand analysis and order subsystem, a satellite test operation control subsystem, a data receiving subsystem and a data processing subsystem. Wherein the demand analysis and order subsystem is used for generating programming order data; the satellite measurement, operation and control subsystem is used for determining imaging plan data and data receiving plan data corresponding to the transit satellites based on the programming order data; determining a telemetry instruction based on the imaging plan data; the data receiving subsystem comprises a ground station which is used for uploading a telemetering instruction to a transit satellite; on the basis of the data receiving plan data, satellite original data sent by the transit satellites are received; the data processing subsystem is used for correcting satellite original data and generating standard remote sensing image data. Therefore, the time span from data acquisition to user acquisition is shortened, and the risk of data leakage is reduced.

Description

Technical Field

[0001] The present invention relates to the field of satellite remote sensing technology, and in particular to a time period leasing system and method for acquiring remote sensing satellite data. Background Art

[0002] At present, remote sensing satellite technology is gradually becoming an important driving force for the development of modern science and technology with its efficient data collection capabilities. Its data has the advantages of wide coverage, high timeliness, and high resolution, providing unprecedented information support for all walks of life. In recent years, with the booming commercial aerospace, remote sensing satellite technology has ushered in a period of rapid development and has been widely used in many fields such as environmental monitoring, urban planning, agricultural management, and disaster warning.

[0003] Remote sensing data is highly time-sensitive and is updated rapidly on a daily basis. Therefore, how to obtain the latest and fastest data is a technical problem that needs to be solved urgently in this field. Summary of the invention

[0004] In view of this, an embodiment of the present application provides a time period leasing system and method for remote sensing satellite data acquisition, aiming to shorten the time span from data collection to user acquisition while reducing the risk of data leakage.

[0005] The technical solution of the embodiment of the present application is implemented as follows: In a first aspect, an embodiment of the present application provides a time period leasing system for acquiring remote sensing satellite data, which is applied to a user side, and the time period leasing system includes: The demand analysis and order subsystem is used to obtain satellite photography order data of the target user within the rental period, wherein the satellite photography order data at least includes the target photography area and the target photography time; Based on the target shooting area, the target shooting time and the first mapping relationship, determine the identification information of the transit satellite corresponding to the target shooting area and the transit data of the transit satellite; the transit data at least includes transit time period data; based on the identification information and the transit time period data, generate programming order data; The first mapping relationship includes a correspondence between each shooting area and the identification information of each transit satellite and a correspondence between the identification information of each transit satellite and each transit data; The satellite measurement, operation and control subsystem is used to obtain the programming order; determine the imaging plan data and data receiving plan data corresponding to the transit satellite based on the programming order data; and determine the telemetry instruction based on the imaging plan data; A data receiving subsystem is used to obtain the telemetry instruction and the data receiving plan data; the data receiving subsystem includes a ground station, the ground station is used to upload the telemetry instruction to the transit satellite; and based on the data receiving plan data, receive the satellite raw data sent by the transit satellite; the satellite raw data is generated by the transit satellite in response to the uploaded telemetry instruction; The data processing subsystem is used to obtain the satellite raw data, correct the satellite raw data, and generate standard remote sensing image data.

[0006] In some embodiments, the demand analysis and order subsystem includes a first visualization module; the satellite measurement, transportation and control subsystem includes a second visualization module; the data receiving subsystem includes a third visualization module; the data processing subsystem includes a fourth visualization module; The demand analysis and order subsystem is also used to respond to the order retrieval request of the target user within the rental period, and search for the target order corresponding to the order retrieval request based on the historical order list. The first visualization module is used to display the target order.

[0007] In some embodiments, the satellite photography order data further includes: sensor type information, remote sensing image data type information, satellite roll angle data and cloud cover data; the demand and order subsystem is further used to generate satellite orbit forecast information, transit information corresponding to the target area and target access data based on the identification information, the transit period data, the sensor type information, the remote sensing image data type information, the satellite roll angle data and the cloud cover data; the target access data includes the observed load time and the coverage of the satellite payload; The satellite orbit prediction information, the satellite transit information of the target area and the target access information are programmed to generate the programming order data.

[0008] In some embodiments, the standard remote sensing image data includes first standard remote sensing image data and second standard remote sensing image data, and the data processing subsystem is further used to perform relative radiation correction on the satellite raw data; Processing the satellite raw data after relative radiation correction based on the modulation transfer function to generate the first standard remote sensing image data; The first standard remote sensing image data is processed based on average elevation orthorectification to generate the second standard remote sensing image data.

[0009] In some embodiments, the time period leasing system further includes: A data management subsystem, used to obtain the satellite raw data, the first standard remote sensing image data and the second standard remote sensing image data; the data management subsystem includes a first database, a second database and a third database; Updating the first database based on the satellite raw data; updating the second database based on the first standard remote sensing image data; The third database is updated based on the second standard remote sensing image data.

[0010] In some embodiments, the target user includes multiple sub-users, and the time period leasing system further includes: A data distribution subsystem, used for acquiring and sending the standard remote sensing image to the target user, or responding to a data request from a sub-user during the lease period, the data request including at least a data type and a target data time of the target data; Based on the data type, determining a target database; and determining target data in a target database based on the target data time; Verifying the target data and generating a verification result, and if the verification result is successful, sending the target data to the sub-user device; The operation management subsystem is used to monitor the operation status, interface status and hardware resource status of at least one subsystem among the demand analysis and order subsystem, the satellite measurement, operation and control subsystem, the data receiving subsystem, the data processing subsystem and the data distribution subsystem.

[0011] In some embodiments, the demand analysis and order subsystem is also used to monitor the process status of the satellite photography order, and the process status includes the photography time data of the satellite photography order.

[0012] In some embodiments, the satellite measurement, operation and control subsystem is further used to perform sequence conversion based on the telemetry instruction to generate a remote control sequence; Based on the imaging plan, adjusting the operation and control plan data of the transit satellite, the operation and control plan data including satellite orbit parameters, satellite imaging parameters and satellite data transmission parameters; The ground station is also used to upload the remote control sequence and the satellite pre-control plan data to the transit satellite; The data processing subsystem is also used to input and store the satellite raw data; The raw satellite data is catalogued, wherein the cataloguing includes at least one of the following: decompression and formatting, segmentation and scene segmentation.

[0013] In some embodiments, the satellite measurement, operation and control system is further used to perform a legality check on the telemetry instruction and generate a verification result, wherein the verification result includes: a first verification result of a legal verification and a second verification result of an illegal verification; If it is determined that the verification result is the first verification result, sending the telemetry instruction; The performing of a legality check on the telemetry instruction and generating a check result comprises: Based on the satellite telemetry instruction standard usage criteria, preset standard coding and inversion verification rules, the telemetry instruction is verified for legality to generate the verification result.

[0014] In some embodiments, the data receiving subsystem is further used to switch channels based on the frequency of the transit satellite signal corresponding to the satellite original data and the channel characteristics of the transit satellite signal.

[0015] In a second aspect, an embodiment of the present application further provides a remote sensing data acquisition method of a time period leasing system for remote sensing satellite data acquisition as described in the first aspect above, the method comprising: The satellite measurement, operation and control subsystem acquires programming order data; wherein the programming order data is acquired by the demand analysis and order subsystem from satellite photography order data of a target user within a rental period, and the satellite photography order data at least includes a target photography area and a target photography time; based on the target photography area, the target photography time and a first mapping relationship, the identification information of a transit satellite corresponding to the target photography area and the transit data of the transit satellite are determined; the transit data at least includes transit time period data; and is generated based on the identification information and the transit time period data; The first mapping relationship includes a correspondence between each shooting area and the identification information of each transit satellite and a correspondence between the identification information of each transit satellite and each transit data; Determining imaging plan data and data receiving plan data corresponding to the transit satellite based on the programming order data; Based on the imaging planning data, telemetry instructions are determined.

[0016] In some embodiments, the method further comprises: The satellite measurement, operation and control subsystem performs sequence conversion based on the telemetry instruction to generate a remote control sequence; Based on the imaging plan, the operation and control plan data of the transit satellite are adjusted, wherein the operation and control plan data include satellite orbit parameters, satellite imaging parameters and satellite data transmission parameters.

[0017] The technical solution provided by the embodiment of the present application is a time period leasing system and method for remote sensing satellite data acquisition, which is applied to the user side. The time period leasing system includes: a demand analysis and order subsystem, a satellite measurement and control subsystem, a data receiving subsystem and a data processing subsystem. Among them, the demand analysis and order subsystem is used to obtain the satellite shooting order data of the target user during the rental period, and the satellite shooting order data includes at least the target shooting area and the target shooting time; based on the target shooting area, the target shooting time and the first mapping relationship, the identification information of the transit satellite corresponding to the target shooting area and the transit data of the transit satellite are determined; the transit data includes at least the transit time period data; based on the identification information and the transit time period data, the programming order data is generated; wherein the first mapping relationship includes the correspondence between each shooting area and the identification information of each transit satellite and the correspondence between the identification information of each transit satellite and each transit data; the satellite measurement and control subsystem is used to obtain the satellite shooting order data of the target user during the rental period, and the satellite shooting order data includes at least the target shooting area and the target shooting time; the satellite measurement and control subsystem includes at least the target shooting area and the transit data of the transit satellite ... The operation and control subsystem is used to obtain programming orders; based on the programming order data, the imaging plan data and data reception plan data corresponding to the transit satellite are determined; based on the imaging plan data, the telemetry instructions are determined; the data reception subsystem is used to obtain telemetry instructions and data reception plan data; the data reception subsystem includes a ground station, which is used to upload telemetry instructions to the transit satellite; and based on the data reception plan data, the satellite raw data sent by the transit satellite is received; the satellite raw data is generated by the transit satellite in response to the uploaded telemetry instructions; the data processing subsystem is used to obtain the satellite raw data, and correct the satellite raw data to generate standard remote sensing image data.

[0018] In this way, the time period leasing system for remote sensing satellite data acquisition in the embodiment of the present application covers the demand analysis and order subsystem and the satellite measurement, transportation and control subsystem. This allows users to flexibly plan the satellite transit period according to their own needs during the leasing period, and achieve customized collection of order data. Among them, the demand analysis and order subsystem directly connects with user needs, and the satellite measurement, transportation and control subsystem quickly plans and issues instructions. At the same time, the time period leasing system for remote sensing satellite data acquisition also includes a data receiving subsystem and a data processing subsystem, which can directly receive and process locally, eliminating the intermediate links in the traditional remote sensing data acquisition process, and greatly shortening the time span from data acquisition to user acquisition. In addition, with the data receiving subsystem and the data processing subsystem, local reception and processing of satellite raw data can be achieved, ensuring that all satellite data are stored locally, greatly reducing the risk of data leakage. Finally, the time period leasing system is deployed on the user side. During the leasing period, users can complete the full process of business from ordering to production and management locally, which improves the user's autonomy and controllability of data acquisition and management. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0020] Figure 1 A schematic diagram of the architecture of a time slot leasing system for acquiring remote sensing satellite data provided in an embodiment of the present application; Figure 2 A schematic diagram of a process for acquiring remote sensing satellite data provided in an embodiment of the present application; Figure 3 A schematic diagram of the working implementation process of the rental period system provided for another application example of the present application; Figure 4 A flowchart of a rental period system method provided for yet another application example of the present application. DETAILED DESCRIPTION

[0021] The present application is further described in detail below with reference to the accompanying drawings and embodiments. Unless otherwise defined, all technical and scientific terms used herein are the same as those in the present application. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings.

[0022] The present application embodiment provides a time period leasing system for acquiring remote sensing satellite data, which is applied to the user side, such as Figure 1 As shown, Figure 1 The overall structural diagram of the time period leasing system for satellite data acquisition provided in this application is applied on the user side and includes: a demand analysis and order subsystem, a satellite measurement and control subsystem, a data receiving subsystem and a data processing subsystem.

[0023] It can be understood that the time period leasing system for remote sensing satellite data acquisition provided in the embodiment of the present application is applied to the user side, relying on an autonomous and controllable satellite constellation, and based on the existing ground system, providing satellite-free users with an integrated product for measurement, operation, control, reception and processing. On the one hand, the timeliness of data acquisition is greatly improved. On the other hand, since all subsystems are deployed on the user side, users can complete the entire process from ordering to production and management locally during the leasing period. In this way, the user's autonomy can be further improved during the user's leasing period.

[0024] Here, the demand analysis and order subsystem is used to obtain satellite photography order data of the target user within the rental period, and the satellite photography order data at least includes the target photography area and the target photography time; based on the target photography area, the target photography time and the first mapping relationship, determine the identification information of the transit satellite corresponding to the target photography area and the transit data of the transit satellite; the transit data at least includes the transit time period data; based on the identification information and the transit time period data, generate programming order data; The first mapping relationship includes a correspondence between each shooting area and identification information of each transit satellite and a correspondence between identification information of each transit satellite and each transit data.

[0025] It is understandable that the demand analysis and order subsystem is used for users to pre-plan satellite photography needs and submit satellite photography orders. In this way, the user's satellite photography order data can be directly obtained through the demand analysis and order subsystem, avoiding the traditional method of user needs being transmitted between multiple intermediate links and shortening the time span of data collection.

[0026] Here, the satellite measurement, operation and control subsystem is used to obtain programming orders; based on the programming order data, the imaging plan data and data reception plan data corresponding to the transit satellite are determined; based on the imaging plan data, the telemetry instructions are determined.

[0027] It can be understood that the satellite measurement, operation and control subsystem receives satellite shooting orders to autonomously plan satellite shooting tasks and generate measurement and control instructions, namely telemetry instructions. In this way, the satellite measurement, operation and control subsystem directly plans satellite shooting tasks and data reception plans based on user orders. It does not need to go through multiple levels of approval and coordination, and can quickly generate and issue instructions.

[0028] Here, the data receiving subsystem is used to obtain telemetry instructions and data receiving plan data; the data receiving subsystem includes a ground station, which is used to upload telemetry instructions to the transit satellite; and based on the data receiving plan data, receives the satellite raw data sent by the transit satellite; the satellite raw data is generated by the transit satellite in response to the uploaded telemetry instructions.

[0029] It can be understood that the telemetry instructions are injected into the satellite by the ground station, the satellite generates satellite raw data by imaging the target area when passing over it, and the data receiving subsystem and the ground station receive the satellite raw data. In this way, the satellite raw data can be directly received locally through the data receiving subsystem.

[0030] Here, the data processing subsystem is used to obtain satellite raw data, correct the satellite raw data, and generate standard remote sensing image data. It can be understood that the satellite raw data passes through the data processing subsystem to realize the entry and processing of satellite data and complete the production of standard products. In this way, through the data receiving subsystem and the data processing subsystem, data can be directly received and processed locally, without the need to transmit the data to multiple intermediate sites for processing, reducing the path and time of data transmission, thereby significantly shortening the time span from data collection to user acquisition, and also avoiding the risk of data leakage due to passing through multiple intermediate links during the transmission process.

[0031] In this way, the time period leasing system for remote sensing satellite data acquisition in the embodiment of the present application covers the demand analysis and order subsystem and the satellite measurement, transportation and control subsystem. This allows users to flexibly plan the satellite transit time period according to their own needs and achieve customized collection of order data. Among them, the demand analysis and order subsystem directly connects with user needs, and the satellite measurement, transportation and control subsystem quickly plans and issues instructions. At the same time, the time period leasing system for remote sensing satellite data acquisition also includes a data receiving subsystem and a data processing subsystem, which can directly receive and process locally, eliminating the intermediate links in the traditional remote sensing data acquisition process, and greatly shortening the time span from data acquisition to user acquisition. In addition, with the data receiving subsystem and the data processing subsystem, local reception and processing of satellite raw data can be achieved, ensuring that all satellite data are stored locally, greatly reducing the risk of data leakage. Finally, the time period leasing system is deployed on the user side, which can realize the user's local completion of the entire business process from ordering to production and management during the leasing period, and improve the user's autonomy and controllability of data acquisition and management.

[0032] In some embodiments, the demand analysis and order subsystem includes a first visualization module; the satellite measurement, transportation and control subsystem includes a second visualization module; the data receiving subsystem includes a third visualization module; the data processing subsystem includes a fourth visualization module; The demand analysis and order subsystem is also used to respond to the target user's order retrieval request within the rental period, and to search for the target order corresponding to the order retrieval request in the historical order list. The first visualization module is used to display the target order.

[0033] It is understandable that each operating system in the embodiment of the present application has an independent front-end display, i.e., a visualization module, by which the user can intuitively and clearly manage each operation step. By using a visualization system, the user can quickly master the working mode from ordering to receiving, processing, and distributing without having to go through the cumbersome process and complex matters of launching a satellite.

[0034] Exemplarily, the demand analysis and order subsystem is also used to respond to the target user's order retrieval request, and based on the historical order list, find the target order corresponding to the order retrieval request, and the first visualization module is used to display the target order. In this way, the demand analysis and order subsystem of the embodiment of the present application can perform order list data retrieval and detailed browsing. The user can use the invention to intuitively and clearly manage each operation step without going through the cumbersome process and complex matters of launching a satellite.

[0035] In some embodiments, the satellite photography order data further includes: sensor type information, remote sensing image data type information, satellite roll angle data and cloud cover data; the demand and order subsystem is further used to generate satellite orbit forecast information, transit information corresponding to the target area and target access data based on the identification information, transit period data, sensor type information, remote sensing image data type information, satellite roll angle data and cloud cover data; the target access data includes the observed load time and the coverage of the satellite payload; Satellite orbit prediction information, satellite transit information in the target area and target visit information are programmed to generate programming order data.

[0036] It is understandable that users can also select sensor type, data type, swing angle and cloud cover through the demand analysis and order subsystem, and submit satellite imaging requirements to form programming orders.

[0037] It is understandable that the sensor type information determines the type of sensor used by the satellite, and different sensors vary in data collection capabilities and accuracy. Remote sensing image data type information specifies the specific type of image data required, such as different spectral ranges or resolution requirements. Satellite sway angle data affects the satellite's observation angle and can adjust the satellite's observation range and focus on the target area. Cloud cover data is crucial for evaluating the quality of remote sensing images, and excessive cloud cover may affect the availability of images.

[0038] The demand and order subsystem uses the identification information, transit period data, and the above data to generate satellite orbit forecast information. This allows users to know the satellite's trajectory in advance so that they can better plan data collection. At the same time, the system can also generate transit information corresponding to the target area, that is, the specific time and situation of the satellite passing through the target area. In addition, by processing these data, target access data can also be obtained, including observation load time, that is, the effective working time of the satellite when observing the target area, and the coverage of the satellite payload, that is, the geographical area that the sensors on the satellite can cover.

[0039] Finally, programming satellite orbit prediction information, satellite transit information of the target area, and target visit information can generate a programming order, which will guide the satellite to observe the target area at a specific time and in a specific way to meet the specific needs of the user.

[0040] In some embodiments, the standard remote sensing image data includes first standard remote sensing image data and second standard remote sensing image data, and the data processing subsystem is further used to perform relative radiation correction on the satellite raw data; Processing the satellite raw data after relative radiation correction based on the modulation transfer function to generate first standard remote sensing image data; The first standard remote sensing image data is processed based on average elevation orthorectification to generate the second standard remote sensing image data.

[0041] It is understandable that the standard remote sensing image data includes the first remote sensing image data and the second remote sensing image data. Exemplarily, the standard remote sensing image data is a standard image product, which can be divided into a standardized level 1 product and a standardized level 2 product according to the level.

[0042] It is understood that the main task of the data processing subsystem is to automatically produce standard level 1 and 2 products after receiving the raw satellite data. It is understood that the data processing subsystem can decompress, format, relatively correct, correct the sensor, and perform orthorectification based on average elevation on the raw satellite data, correct based on the average elevation of the target area and project it onto the earth plane, etc., to complete the batch automatic production of level 1 and 2 standard image products, thereby outputting standardized level 1 and 2 products, namely, the first standard remote sensing image data and the second standard remote sensing image data.

[0043] In some embodiments, the time period leasing system further includes: A data management subsystem is used to obtain satellite raw data, first standard remote sensing image data and second standard remote sensing image data; the data management subsystem includes a first database, a second database and a third database; Updating the first database based on the satellite raw data; updating the second database based on the first standard remote sensing image data; The third database is updated based on the second standard remote sensing image data.

[0044] It is understandable that the data management subsystem archives and manages the satellite product data. The data management subsystem needs to have good compatibility and can update the first database, the second database, and the third database for different types of satellite raw data, level 0 data, and advanced product data, such as the first standard remote sensing image data and the second standard remote sensing image data.

[0045] It is understandable that the data management subsystem can also access and manage subsequent star source data in the later stage. In addition, the data management subsystem supports local data order production, by retrieving level 0 data and placing orders to produce standard products. The data management subsystem also includes the fifth visualization module, thereby supporting the monitoring of the entire order process status.

[0046] In some embodiments, the target user includes multiple sub-users, and the time period leasing system further includes: A data distribution subsystem, used to acquire and send standard remote sensing images to target users, or respond to a data request sent by a sub-user device, the data request at least including the data type and target data time of the target data; Determine the target database based on the data type; and determining the target data in the target database based on the target data time; Verify the target data and generate a verification result. If the verification result is successful, send the target data to the sub-user device; The operation management subsystem is used to monitor the operation status, interface status and hardware resource status of at least one subsystem among the demand analysis and order subsystem, the satellite measurement, operation and control subsystem, the data receiving subsystem, the data processing subsystem and the data distribution subsystem.

[0047] It is understandable that the data distribution subsystem pushes the saved data products to sub-users on demand, which can meet the personalized data needs of sub-users. Sub-users can submit data security requirements including data range, data type, data time, product level and other specific requirements through the device. The data distribution subsystem can parse these requirements, analyze the satisfaction of the requirements, query and aggregate the data that meets the requirements from the corresponding database, and push the target data that meets the requirements to the sub-users after strict data verification to ensure data quality. In this way, the data distribution subsystem can push the saved data products to sub-users on demand, improving the efficiency and pertinence of data utilization.

[0048] It is understandable that the main business of the operation management subsystem is business process monitoring, equipment status monitoring, interface status monitoring, system status monitoring, etc.

[0049] Monitor the usage status of hardware devices, monitor the usage of system resources such as CPU, memory, disk, network, etc., promptly identify system bottlenecks and performance problems, and provide real-time performance data; monitor the operation of each subsystem application, including the application's response time, operating status, error log, etc., promptly identify application problems, provide monitoring system and application logs, and promptly identify errors, anomalies and security issues; monitor the operation of each interface, including whether the weather interface is unobstructed, and return a log report.

[0050] Exemplarily, the operation management subsystem also includes a comprehensive display module, which can independently display the above monitoring data and collect effective data, provide data basis for statistical analysis, and is also the information source of the comprehensive display module.

[0051] In some embodiments, the demand analysis and order subsystem is also used to monitor the process status of satellite photography orders, and the process status includes the photography time data of the satellite photography orders.

[0052] In some embodiments, the satellite measurement, operation and control subsystem is further used to perform sequence conversion based on telemetry instructions to generate a remote control sequence; Based on the imaging plan, adjust the operation and control plan data of the transit satellite, which includes satellite orbit parameters, satellite imaging parameters and satellite data transmission parameters; The ground station is also used to upload remote control sequences and satellite pre-control plan data to transit satellites; The data processing subsystem is also used to input and store raw satellite data; The satellite raw data is catalogued, and the cataloguing process includes at least one of the following: deformatting and decompression processing, formatting data segmentation processing and scene segmentation processing.

[0053] It is understandable that the satellite measurement, operation and control subsystem can also generate corresponding remote control sequences according to satellite remote control instructions, and send them to the ground station using a "one-button" trigger method, thereby completing the remote control sequence upload task.

[0054] Here, the satellite measurement and control subsystem can also adjust the transit satellite's control plan data based on the imaging plan. The control plan data includes satellite orbit parameters, satellite imaging parameters and satellite data transmission parameters. In addition, the satellite measurement and control subsystem can also monitor the entire remote control injection process.

[0055] It can be understood that the data processing subsystem can complete the functions of satellite raw data, level 0 data entry, etc., and complete the automatic cataloging processing, providing functions such as formatting and decompression, formatting data segmentation, scene segmentation, scene positioning calculation, and scene metadata generation; In some embodiments, the satellite measurement, operation and control system is further used to perform a legality check on the telemetry instruction and generate a verification result, the verification result including: a first verification result of a legal verification and a second verification result of an illegal verification; If it is determined that the verification result is the first verification result, sending a telemetry instruction; Perform a validity check on the telemetry command and generate the following verification results: Based on the standard usage criteria of satellite telemetry commands, preset standard coding and inversion verification rules, the telemetry commands are verified for legitimacy and verification results are generated.

[0056] In some embodiments, the data receiving subsystem is further used to switch channels based on the frequency of the transit satellite signal corresponding to the satellite raw data and the channel characteristics of the transit satellite signal.

[0057] The time slot leasing system for acquiring remote sensing satellite data is described in detail below with reference to an application example.

[0058] Since remote sensing data is highly time-sensitive and is updated quickly on a daily basis, how to obtain the latest and fastest data is a widely-concerned issue in the industry. This application example proposes a time slot leasing system for remote sensing satellite data acquisition. The introduction of this time slot leasing system is precisely to meet this challenge.

[0059] The system allows users to flexibly plan satellite transit periods according to their own needs, and realize customized data collection, local reception and processing. By eliminating the intermediate links in the traditional remote sensing data acquisition process, the system significantly shortens the time span from data collection to user acquisition. All satellite data is stored locally, greatly reducing the risk of data leakage.

[0060] Through the time slot leasing system, users can realize localized operations of the entire process from planning, receiving, processing to management, which not only ensures the security of the data, but also meets the high standards for data processing efficiency.

[0061] like Figure 1 As shown in the figure, the time period rental system includes demand analysis and order subsystem, satellite measurement and control subsystem, data reception subsystem, data processing subsystem, operation management subsystem, data management subsystem, and data distribution subsystem. All of the above subsystems are deployed on the user side, and the user completes the entire business process from ordering to production and management locally.

[0062] Next, the system functions of each subsystem in the system are described in detail.

[0063] 1. Demand analysis and order subsystem The demand analysis and order subsystem is used for user analysis, purchase demand collection form, collection form ordering, user order management, order full process status monitoring, order statistics, order shooting time statistics management, etc. It includes target area transit analysis and programming data collection and ordering. It can perform satellite orbit forecast and target area transit situation analysis; it can perform target access calculation, including observation coverage time calculation, satellite payload coverage range calculation, etc.; it can perform order list data retrieval and detail browsing, and the progress of the whole process can be monitored through order list status monitoring.

[0064] 2. Satellite measurement, operation and control subsystem The satellite measurement, operation and control subsystem is mainly responsible for the overall planning of satellite data acquisition, the realization of the coordinated complementarity of satellite resources, station network resources and application resources, and the formulation of satellite shooting tasks and ground reception plans. Determine the parameters and constraints of task coordination, receive observation plans, check constraint modules, and calculate and generate satellite operation and control plans; manage satellites and payloads, and receive ground station resource management; acquire, manage and send satellite operation and control plans and satellite operation and control schemes; check the legality, code comparison, inversion verification, generation and transmission of remote control commands; automatically compile and generate corresponding remote control sequences according to the satellite remote control command usage guidelines, use a "one-button" trigger method to complete the remote control sequence injection task, and support pause, continue, terminate, single step and other functions, and can monitor the remote control injection process throughout; automatically unpack and parse the key telemetry parameters related to remote control injection according to the satellite telemetry processing method, provide a basis for decision to establish a stable uplink between the ground station and the satellite and monitor the execution of remote control, and support satellite management, station management, operation log query and other comprehensive management functions.

[0065] 3. Data receiving subsystem.

[0066] The data receiving subsystem is used to receive raw data, switch channels, convert frequencies, demodulate satellite signals, and process the received satellite downlink data into raw data files. According to the data receiving and control mission plan issued by the satellite measurement and control system, it is responsible for issuing instructions, receiving and recording data transmitted by the satellite, and transmitting the data to the data processing system.

[0067] 4. Data processing subsystem The main task of the data processing subsystem is to automatically produce standard level 1 and 2 products after receiving the original satellite data. It completes the functions of satellite level 0 data entry, completes automatic cataloging processing, provides functions such as formatting and decompression, formatted data segmentation, scene segmentation, scene positioning calculation, and scene metadata generation, completes relative radiation correction, MTF processing, panchromatic multi-spectral registration, CCD stitching, RPC parameter calculation, etc. for satellite data, completes the batch automatic production of level 1 and 2 standard image products, and outputs standardized level 1 and 2 products.

[0068] 5.Data management subsystem The main task of the data management subsystem is to manage business data, catalog data, and store and manage corresponding data. The data management subsystem needs to have good compatibility and can be used for different types of satellite raw data, level 0 data, and advanced product data. Later, it can access and manage subsequent satellite source data. It can support local data order production, retrieve level 0 data and place orders to produce standard products, and support the monitoring of the entire order process status.

[0069] 6. Operation management subsystem The main business of the operation management subsystem is business process monitoring, equipment status monitoring, interface status monitoring, system status monitoring, etc. The collection of effective data provides a data basis for statistical analysis and is also the source of information for the comprehensive display module; monitor the usage status of hardware equipment, monitor the usage of system resources such as CPU, memory, disk, network, etc., promptly discover system bottlenecks and performance problems, and provide real-time performance data; monitor the operation of each subsystem application, including the application's response time, operating status, error log, etc., promptly discover application problems, provide monitoring system and application logs, and promptly discover errors, anomalies and security issues; monitor the operation of each interface, including whether the weather interface is unblocked, and return log reports.

[0070] 7. Data distribution subsystem The data distribution subsystem can receive data security requirements submitted by sub-users, including data range, data type, data time, product level, etc. It can parse programming and archiving data requirements, analyze the satisfaction of requirements, query aggregated data from the database, complete data verification, and push it to sub-users.

[0071] The time slot rental system provided in this application example is a highly efficient and customized system for acquiring remote sensing satellite data. Users can use this system to control satellite shooting. This system reserves a satellite operation and control window for users, allowing users to propose requirements, make independent plans, submit instructions, and receive them independently. The entire local production process is autonomously controllable and production delivery is completed.

[0072] In this system, each operating system has an independent front-end display, and users can use this invention to intuitively and clearly manage each operation step. Using the visual system, users can quickly master the working mode from ordering to receiving, processing and distributing, without having to go through the cumbersome process and complex matters of launching satellites.

[0073] After the system is built, the efficiency of customized data under the traditional model can be greatly improved. It normally takes 90 minutes from proposing requirements to receiving and producing Level 1 products, and only 30 minutes in emergency situations.

[0074] Based on the above-mentioned remote sensing satellite data acquisition time period leasing system, the present application embodiment also provides a remote sensing satellite data acquisition method, such as Figure 2 As shown, the specific implementation steps are as follows: Step 210: the satellite measurement, operation and control subsystem acquires programming order data; wherein the programming order data is acquired by the demand analysis and order subsystem from the satellite photography order data of the target user during the rental period, and the satellite photography order data at least includes the target photography area and the target photography time; based on the target photography area, the target photography time and the first mapping relationship, the identification information of the transit satellite corresponding to the target photography area and the transit data of the transit satellite are determined; the transit data at least includes the transit period data; and is generated based on the identification information and the transit period data; The first mapping relationship includes a correspondence between each shooting area and identification information of each transit satellite and a correspondence between identification information of each transit satellite and each transit data.

[0075] Step 220: Based on the programming order data, determine the imaging plan data and data receiving plan data corresponding to the transit satellite.

[0076] Step 230: Based on the imaging planning data, telemetry instructions are determined.

[0077] In this way, the satellite measurement, operation and control subsystem achieves the transformation from user needs to satellite operation instructions by obtaining programming orders, determining the imaging plan data and data reception plan data corresponding to the transit satellite based on the programming order data, and determining the telemetry instructions based on the imaging plan data. This process enables the satellite to plan the shooting mission according to the user's expectations, ensures the rational use of satellite resources, improves the pertinence and effectiveness of satellite data acquisition, and lays the foundation for the subsequent accurate acquisition of remote sensing data that meets user needs.

[0078] In some embodiments, the method further comprises: The satellite measurement, operation and control subsystem performs sequence conversion based on telemetry instructions and generates remote control sequences; Based on the imaging plan, adjust the operation and control plan data of the transit satellite, which includes satellite orbit parameters, satellite imaging parameters and satellite data transmission parameters. In this way, the satellite measurement, operation and control subsystem generates a remote control sequence based on telemetry instructions by performing sequence conversion, and adjusts the operation and control plan data of the transit satellite (including satellite orbit parameters, satellite imaging parameters and satellite data transmission parameters) based on the imaging plan. This can ensure that the satellite accurately performs the shooting task according to the predetermined plan, improve the accuracy and effectiveness of satellite data acquisition, and at the same time, flexibly adjust the satellite's operating parameters according to actual conditions to adapt to different mission requirements and environmental changes, thereby better meeting users' customized needs for remote sensing data.

[0079] Below, the embodiment of the present application is described in detail in conjunction with another application example.

[0080] This application example is based on the above Figure 1The time period leasing system for remote sensing satellite data acquisition shown in the figure describes in detail the working implementation process of the time period leasing system.

[0081] like Figure 3 As shown, Figure 3 This is a schematic diagram of the implementation process of the time slot leasing system, which involves multiple subsystems. The subsystems work together to achieve a complete process from user needs to final data distribution.

[0082] Specifically, the remote sensing image time period rental system of this application example is set up at the user end. At the user end, the time period rental system includes: 1. Demand analysis and order subsystem; 2. Satellite measurement, operation and control subsystem, 3. Data receiving subsystem; 4. Data processing subsystem; 5. Data management subsystem; 6. Operation management subsystem; 7. Data distribution subsystem.

[0083] In addition, the time-slot leasing system can communicate with different types of satellites (as shown at the top of the figure) through a ground station. The ground station is equipped with fixed or mobile telemetry and receiving antennas, which can communicate with satellites with different payloads in two directions, sending commands and receiving data.

[0084] Here, users go through 1. Demand Analysis and Order Subsystem, select the target area, imaging time, sensor type, data type, swing angle and cloud cover, submit satellite imaging requirements to form a programming order.

[0085] 2. The satellite measurement, operation and control subsystem receives programming orders, coordinates the planning of satellite resources and existing imaging tasks, generates imaging plans and telemetry instructions, generates receiving plans, and sends them to the data receiving subsystem via the Internet.

[0086] 3. The data receiving subsystem receives the telemetry instructions and transmits them to the satellite to complete the reception and storage of the original data.

[0087] 4. The data processing subsystem completes the production of zero-level, first-level, and second-level product data, and synchronizes it to the data management subsystem for unified archiving and management.

[0088] 5. Overall scheduling of the operation management subsystem, monitoring of production operations of other subsystems, and interface monitoring and hardware resource status monitoring.

[0089] 6. The data management subsystem stores and archives the original data, zero-level, first-level, and second-level product data in production, and completes data statistics, data migration, and other tasks.

[0090] 7. The data distribution subsystem can distribute orders and collect information for sub-users.

[0091] To more clearly describe how the system works, Figure 4 As shown, Figure 4The flowchart of the time period leasing system method is as follows: Step 401: The user pre-plans satellite photography requirements in the demand analysis and order subsystem and submits a satellite photography order.

[0092] Step 402: The user independently plans satellite photography tasks, telemetry data and uploads telemetry instructions through the satellite measurement, operation and control subsystem.

[0093] Step 403: Receive satellite data using the ground station and the data receiving subsystem.

[0094] Step 404: The raw data passes through the data processing subsystem to realize the input and processing of satellite data and complete the basic product production.

[0095] Step 405: The user operates and monitors the software processing flow according to the operation management subsystem.

[0096] Step 406: The basic products produced are transmitted to the data management subsystem for archiving and management.

[0097] Step 407: The user can utilize the data distribution subsystem to distribute orders and collect information statistics for sub-users.

[0098] Step 408: The user can receive, manage, and query the received data in a unified manner.

[0099] In this way, through the introduction of the time period rental system, users can flexibly plan satellite transit periods according to their own needs, and realize customized data collection, local reception and processing. By eliminating the intermediate links in the traditional remote sensing data acquisition process, the system significantly shortens the time span from data collection to user acquisition. All satellite data is stored locally, greatly reducing the risk of data leakage.

[0100] Through the time slot leasing system, users can realize localized operations of the entire process from planning, receiving, processing to management, which not only ensures the security of the data, but also meets the high standards for data processing efficiency.

[0101] In addition, the technical solutions described in the embodiments of the present application can be combined arbitrarily without conflict.

[0102] The above are only specific implementations of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A time slot leasing system for remote sensing satellite data acquisition, characterized in that: Applied to the user side, the time period leasing system includes: The demand analysis and order subsystem is used to obtain satellite photography order data of the target user within the rental period, wherein the satellite photography order data at least includes the target photography area and the target photography time; Based on the target shooting area, the target shooting time and the first mapping relationship, determine the identification information of the transit satellite corresponding to the target shooting area and the transit data of the transit satellite; the transit data at least includes transit time period data; based on the identification information and the transit time period data, generate programming order data; The first mapping relationship includes a correspondence between each shooting area and the identification information of each transit satellite and a correspondence between the identification information of each transit satellite and each transit data; The satellite measurement, operation and control subsystem is used to obtain the programming order data; determine the imaging plan data and data receiving plan data corresponding to the transit satellite based on the programming order data; and determine the telemetry instruction based on the imaging plan data; A data receiving subsystem is used to obtain the telemetry instruction and the data receiving plan data; the data receiving subsystem includes a ground station, the ground station is used to upload the telemetry instruction to the transit satellite; and based on the data receiving plan data, receive the satellite raw data sent by the transit satellite; the satellite raw data is generated by the transit satellite in response to the uploaded telemetry instruction; The data processing subsystem is used to obtain the satellite raw data, correct the satellite raw data, and generate standard remote sensing image data.

2. The time period rental system according to claim 1, characterized in that: The demand analysis and order subsystem includes a first visualization module; the satellite measurement, transportation and control subsystem includes a second visualization module; the data receiving subsystem includes a third visualization module; the data processing subsystem includes a fourth visualization module; The demand analysis and order subsystem is also used to respond to the order retrieval request of the target user within the rental period, and search for the target order corresponding to the order retrieval request based on the historical order list. The first visualization module is used to display the target order.

3. The time period rental system according to claim 1, characterized in that: The satellite photography order data also includes: sensor type information, remote sensing image data type information, satellite roll angle data and cloud cover data; the demand and order subsystem is also used to generate satellite orbit forecast information, transit information corresponding to the target area and target access data based on the identification information, the transit period data, the sensor type information, the remote sensing image data type information, the satellite roll angle data and the cloud cover data; the target access data includes the observation load time and the coverage of the satellite payload; The satellite orbit prediction information, the satellite transit information of the target area and the target access information are programmed to generate the programming order data.

4. The time period rental system according to claim 1, characterized in that: The standard remote sensing image data includes first standard remote sensing image data and second standard remote sensing image data, and the data processing subsystem is also used to perform relative radiation correction on the satellite raw data; Processing the satellite raw data after relative radiation correction based on the modulation transfer function to generate the first standard remote sensing image data; The first standard remote sensing image data is processed based on average elevation orthorectification to generate the second standard remote sensing image data.

5. The time period rental system according to claim 4, characterized in that: The time period leasing system also includes: A data management subsystem, used to obtain the satellite raw data, the first standard remote sensing image data and the second standard remote sensing image data; the data management subsystem includes a first database, a second database and a third database; Updating the first database based on the satellite raw data; updating the second database based on the first standard remote sensing image data; The third database is updated based on the second standard remote sensing image data.

6. The time period leasing system according to claim 1, characterized in that: The target user includes a plurality of sub-users, and the time period leasing system further includes: A data distribution subsystem, used for acquiring and sending the standard remote sensing image to the target user, or responding to a data request from a sub-user during the lease period, the data request including at least a data type and a target data time of the target data; Based on the data type, determining a target database; and determining target data in a target database based on the target data time; Verifying the target data and generating a verification result, and if the verification result is successful, sending the target data to the sub-user device; The operation management subsystem is used to monitor the operation status, interface status and hardware resource status of at least one subsystem among the demand analysis and order subsystem, the satellite measurement, operation and control subsystem, the data receiving subsystem, the data processing subsystem and the data distribution subsystem.

7. The time period leasing system according to claim 1, characterized in that: The demand analysis and order subsystem is also used to monitor the process status of the satellite photography order, and the process status includes the photography time data of the satellite photography order.

8. The time period leasing system according to claim 1, characterized in that: The satellite measurement, operation and control subsystem is also used to perform sequence conversion based on the telemetry instruction to generate a remote control sequence; Based on the imaging plan, adjusting the operation and control plan data of the transit satellite, the operation and control plan data including satellite orbit parameters, satellite imaging parameters and satellite data transmission parameters; The ground station is also used to upload the remote control sequence and the satellite pre-control plan data to the transit satellite; The data processing subsystem is also used to input and store the satellite raw data; The raw satellite data is catalogued, wherein the cataloguing includes at least one of the following: decompression and formatting, segmentation and scene segmentation.

9. The time period leasing system according to claim 1, characterized in that: The satellite measurement, operation and control system is further used to perform a legality check on the telemetry instruction and generate a check result, wherein the check result includes: a first check result of a legal check and a second check result of an illegal check; If it is determined that the verification result is the first verification result, sending the telemetry instruction; The performing of a legality check on the telemetry instruction and generating a check result comprises: Based on the satellite telemetry instruction standard usage criteria, preset standard coding and inversion verification rules, the telemetry instruction is verified for legality to generate the verification result.

10. The time period leasing system according to claim 1, characterized in that: The data receiving subsystem is also used to switch channels based on the frequency of the transit satellite signal corresponding to the satellite original data and the channel characteristics of the transit satellite signal.

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