CN113650808A - Task-driven-oriented dynamic emergency method and system for remote sensing satellite - Google Patents
Task-driven-oriented dynamic emergency method and system for remote sensing satellite Download PDFInfo
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- CN113650808A CN113650808A CN202110955726.0A CN202110955726A CN113650808A CN 113650808 A CN113650808 A CN 113650808A CN 202110955726 A CN202110955726 A CN 202110955726A CN 113650808 A CN113650808 A CN 113650808A
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- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64G—COSMONAUTICS; VEHICLES OR EQUIPMENT THEREFOR
- B64G1/00—Cosmonautic vehicles
- B64G1/10—Artificial satellites; Systems of such satellites; Interplanetary vehicles
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- B—PERFORMING OPERATIONS; TRANSPORTING
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Abstract
The invention provides a task-driven-oriented dynamic emergency method and system for a remote sensing satellite. The method comprises the following steps: accepting an emergency task a; searching a satellite load starting time period which conflicts with the task a; the shutdown time of the last load action on the satellite is assumed to be TeAnd determining a rescheduled time interval [ T ]s，Te](ii) a Replanning [ T ]s，Te]A sequence of satellite actions within the interval; selecting a task planning strategy matched with the application scene according to the emergency task property; generating a re-planning scheme according to the task planning strategy; deleting time T by using instruction in re-planning schemecApplying for an emergency measurement and control arc section for time rear limit; generating a new data transmission receiving plan according to the re-planning scheme, and canceling TcData transmission plan after time, examine and approve new data transmission receiving meterScribing; generating a load control instruction containing an instruction deleting action according to the re-planning scheme, and finishing issuing control; and judging the injection and execution conditions of the emergency command by the telemetering data, and updating a satellite effective load on-off time sequence table maintained by the ground system. The task-driven-oriented dynamic emergency method and system for the remote sensing satellite can automatically complete the whole process from emergency demand acceptance to load control instruction generation.
Description
Technical Field
The invention relates to the technical field of remote sensing satellites, in particular to a task-driven-oriented dynamic emergency method and system for a remote sensing satellite.
Background
With the continuous progress of satellite technology and the increasing demand of users for remote sensing data, earth observation satellites have become an important platform for acquiring high-timeliness information. The satellite task planning means that in a certain time period, according to observation requirements submitted by users and satellite-ground resource states, a satellite observation and data transmission scheme is determined, a satellite load control instruction is generated, and satellite control is completed.
During the execution of the planning scheme, the formed scheme may need to be adjusted due to an emergency, such as newly accepting an observation requirement with a requirement of a completion time limit or executing an emergency search task. In general, satellite emergency mission planning can be divided into two cases: one is that the load control command corresponding to the observation scheme is not yet injected to the satellite; the other is that the satellite has load action in the time period needing emergency observation. The former only needs to adjust the existing observation scheme without considering the execution problem of the arranged load action on the satellite; the latter not only needs to re-plan the existing observation scheme, but also needs to update the arranged load action on the satellite, and the emergency command generation should be completed in a shorter time besides the more complex constraint considered.
At present, aiming at emergency adjustment of tasks arranged on a satellite, an operator needs to make an emergency planning scheme of the satellite of a corresponding model by means of professional auxiliary software after factors such as on-satellite state, load use constraint and the like are considered comprehensively, a load control instruction is compiled, and instruction issuing control and data transmission plan adjustment are completed.
The existing operation control mode is to make task planning schemes of different batches according to a time period (generally 24 hours), if the situation of cross-batch adjustment occurs during emergency adjustment, the on-satellite state needs to be judged manually, and the time interval of the emergency adjustment is set according to the existing load control instruction sequence on the satellite.
The existing emergency task planning has the following disadvantages:
1. the automation degree is not high, manual intervention is needed, so that the time consumption of the full-flow response from emergency demand acceptance to load control instruction generation is long, and whether the adjustment is successful or not depends on the experience and proficiency of an operator;
2. in the current operation control system, the coupling degree of the relevant software modules for emergency adjustment and the model satellites is high, different models correspond to different software modules, the development workload is large, and the reusability is not high;
3. the ground system takes the generation result of the planning scheme as the basis of emergency adjustment, different planning intervals correspond to different planning batches, and the re-planning interval cannot be accurately set under the condition that cross-batch adjustment is needed and needs manual judgment.
Disclosure of Invention
The invention aims to provide a task-driven-oriented dynamic emergency method and system for a remote sensing satellite, which can automatically complete the whole process from emergency demand acceptance to load control instruction generation.
In order to solve the technical problem, the invention provides a task-driven remote sensing satelliteA dynamic emergency method, the method comprising: accepting an emergency task a; searching a satellite load starting time period which conflicts with the task a; the shutdown time of the last load action on the satellite is assumed to be TeAnd determining a rescheduled time interval [ T ]s，Te](ii) a Replanning [ T ]s，Te]A sequence of satellite actions within the interval; selecting a task planning strategy matched with the application scene according to the emergency task property; generating a re-planning scheme according to the task planning strategy; deleting time T by using instruction in re-planning schemecApplying for an emergency measurement and control arc section for time rear limit; generating a new data transmission receiving plan according to the re-planning scheme, and canceling TcThe data transmission plan after the moment examines and approves the new data transmission receiving plan; generating a load control instruction containing an instruction deleting action according to the re-planning scheme, and finishing issuing control; and judging the injection and execution conditions of the emergency command by the telemetering data, and updating a satellite effective load on-off time sequence table maintained by the ground system.
In some embodiments, the satellite performs task a with a payload turn-on time Ta1The load shutdown time is set to Ta2。
In some embodiments, an emergency task a is accepted, comprising: if a plurality of emergency tasks exist, setting the load starting time of the earliest executed task as Ta1The load shutdown time is set to Ta2。
In some embodiments, the satellite payload boot period comprises: the starting time period of the camera and the data transmission subsystem.
In some embodiments, the power-on period b conflicts with task a.
In some embodiments, the principle of determining the conflict between a and b is as follows: b corresponds to a time period of [ Tb1,Tb2]If and only if [ Ta1,Ta2]∩[Tb1,Tb2]When not equal to phi, a conflicts with b.
In some embodiments, the mission planning strategy comprises: timeliness is preferred, imaging quality is preferred, or target number is preferred.
In some embodiments, TsThe values are as follows: if it isThere is a conflict between the start-up period b and the task a, TsGet Ta1And Tb1The former at medium time; if the starting time interval conflicted with the task a does not exist, Ts＝Ta1。
In some embodiments, TcThe values of (A) are as follows: the load starting-up time of the first action in the re-planning scheme is assumed to be T0If the execution time of the delete instruction is T, then Tc＝T0-t。
In addition, the invention also provides a task-driven remote sensing satellite dynamic emergency system, which comprises: one or more processors; a storage device for storing one or more programs which, when executed by the one or more processors, cause the one or more processors to implement the task-driven telemetry satellite dynamic emergency method according to the foregoing.
After adopting such design, the invention has at least the following advantages:
1. the design flow of the scheme is triggered by the handling of emergency requirements, and the emergency planning and the instruction generation are automatically completed without the intervention of personnel, so that the running time is shortened, and the misoperation risk caused by the participation of the personnel is effectively avoided;
2. the system consists of four modules, namely emergency demand acceptance and analysis, agile satellite re-planning, data transmission and measurement and control resource management and instruction sending and control and remote measurement monitoring, the complexity of system development and engineering realization is reduced by adopting a modular design method, emergency processes are completed among functional modules by upstream and downstream calling, the problem can be rapidly positioned when a fault occurs, and the system has strong robustness. The latter two modules have universality and can be applied to conventional requirement guarantee besides emergency requirements;
3. the system updates the satellite load action sequence table according to the real-time telemetering data, realizes satellite state synchronization, further completes satellite load control closed loop, enables load sequence adjustment to be more accurate, and enhances the flexibility of emergency adjustment by taking the satellite load action sequence table as a basis without limitation of planning batches and intervals.
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The foregoing is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and the detailed description.
Fig. 1 is a flow chart of a method.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
The system flow comprises the following 10 steps:
1. accepting an emergency task a, and assuming that the load starting time of the satellite for executing the task a is Ta1The load shutdown time is set to Ta2. If there are a plurality of emergency tasks, the load starting time of the earliest task (assumed to be a) is set as Ta1The load shutdown time is set to Ta2。
2. And searching a satellite load starting-up time period which conflicts with the task a, wherein the satellite load starting-up time period comprises the starting-up of a camera, a data transmission system and the like, and the starting-up time period b is supposed to conflict with the task a.
3. The shutdown time of the last load action on the satellite is assumed to be TeAnd determining a rescheduled time interval [ T ]s，Te]。
4. Replanning [ T ]s，Te]A sequence of satellite movements within the interval.
5. And selecting task planning strategies matched with the application scenes, such as timeliness priority, imaging quality priority or target quantity priority, according to the emergency task properties.
6. And generating a re-planning scheme.
7. Deleting time T by using instruction in re-planning schemecAnd applying for an emergency measurement and control arc section for a time back wall.
8. Generating a new data transmission receiving plan according to the re-planning scheme, and canceling TcAnd after the moment, the adjusted data transmission plan is available, and the newly generated plan is approved.
9. And generating a load control instruction containing an instruction deleting action according to the re-planning scheme, and finishing the control.
10. And judging the injection and execution conditions of the emergency command by the telemetering data, and updating a satellite effective load on-off time sequence table maintained by the ground system.
The principle of the conflict between the a and the b is as follows:
b corresponds to a time period of [ Tb1,Tb2]If and only if [ Ta1,Ta2]∩[Tb1,Tb2]When not equal to phi, a conflicts with b.
TsThe values are as follows: if the starting time interval b conflicts with the task a, TsGet Ta1And Tb1The time is earlier; if the starting time interval conflicted with the task a does not exist, Ts＝Ta1。
TcThe values of (A) are as follows: the load starting-up time of the first action in the re-planning scheme is assumed to be T0If the execution time of the delete instruction is T, then Tc＝T0-t。
Exemplary processing circuitry for client, server, and cloud-based processing system resources for implementing the algorithms and methods of execution are described below. The distributed processing system may include multiple instances of circuitry that may be used to implement any of the processing circuits to perform the algorithms represented by the flow diagrams shown in fig. 1. Not all components need be used in various embodiments. For example, each of the client, server, and network resources of the distributed processing system may use a different set of components, in the case of a graphics database server, a larger storage device may be used, for example.
An exemplary processing system in the form of a computer may include a processing unit, a memory, a removable storage device, and a non-removable storage device, all coupled to a bus. A processing unit may include one or more single-core or multi-core processing devices. Although the exemplary processing system is described as a computer, the processing system may take different forms in different embodiments. For example, the processing system of the user device may also be a laptop, a tablet, or another processing device that includes the same or similar elements. Devices such as notebook computers, tablet computers, and the like may be collectively referred to as mobile devices or user devices. Further, although the various data storage elements are described as part of a computer, the storage devices may or may alternatively comprise network-connected (e.g., cloud-based) storage devices accessible over a network (e.g., a Local Area Network (LAN), a Personal Area Network (PAN), a Wide Area Network (WAN), such as the internet), or local server-based storage devices.
The memory may include volatile memory and non-volatile memory. The computer may include or have access to a processing environment that includes a variety of computer-readable media, such as volatile memory, non-volatile memory, removable storage, and non-removable storage. Computer memory includes Random Access Memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM), and electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technology, compact disc read-only memory (CDROM), Digital Versatile Disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium capable of storing computer-readable instructions.
The computer may include or have access to a processing environment that includes an input interface, an output interface, and a communication connection or interface, where the input interface, the output interface, and the communication connection or interface are connected to a bus. The output interface may include a display device, such as a touch screen or computer display, and may also serve as an input device coupled to the input interface. The input interface may include one or more of a touch screen, a touch pad, a mouse, a keyboard, a camera, one or more device-specific buttons, one or more sensors integrated within or coupled to the computer via a wired or wireless data connection, other input devices, and the like. The computer may operate in a networked environment using a communication connection to one or more remote computers, such as mainframes, servers, and/or database servers, which may be used to implement a network connectivity service. The user equipment may include a Personal Computer (PC), a server, a router, a network PC, a peer device or other common network node, etc. The communication connection may include a Local Area Network (LAN), Wide Area Network (WAN), cellular network, Wi-Fi network, bluetooth network, the internet, or other network.
Computer readable instructions stored in a computer readable medium are executable by a processing unit of a computer. Hard disk drives CD-ROM and RAM are some examples of articles including non-transitory computer readable media (e.g., magnetic, optical, flash, and solid state storage media). The term "computer-readable medium" and "storage device" do not include a carrier wave because the carrier wave is too transitory. For example, the processing unit may be caused to perform one or more of the methods or algorithms described herein by one or more application programs.
It should be understood that software may be installed in and sold with one or more processors of the user device and/or the network connection service. Alternatively, the software may be obtained through a physical medium or distributed system, for example, from a server owned by the software author or from a server not owned by the software author but made available to the software author, and loaded into the user device and/or the network connection service. For example, the software may be stored on a server for distribution over the internet.
The functions or algorithms described herein may be implemented in software in embodiments. The software may include computer-executable instructions stored on a computer-readable medium or computer-readable storage device, such as one or more physical storage devices or other types of hardware-based storage devices, local or network. Further, these functions correspond to modules, which may be software, hardware, firmware, or any combination thereof. Various functions may be performed in one or more modules as desired, and the described embodiments are merely exemplary. The software may be executed on a processing system such as a digital signal processor, an application-specific integrated circuit (ASIC), a microprocessor, a mainframe processor, or other type of processor running on a computer system (e.g., a personal computer server or other processing system), to thereby turn such processing system into a specifically programmed machine.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the present invention in any way, and it will be apparent to those skilled in the art that the above description of the present invention can be applied to various modifications, equivalent variations or modifications without departing from the spirit and scope of the present invention.
Claims (10)
1. A task-driven-oriented remote sensing satellite dynamic emergency method is characterized by comprising the following steps:
accepting an emergency task a;
searching a satellite load starting time period which conflicts with the task a;
the shutdown time of the last load action on the satellite is assumed to be TeAnd determining a rescheduled time interval [ T ]s，Te]；
Replanning [ T ]s，Te]A sequence of satellite actions within the interval;
selecting a task planning strategy matched with the application scene according to the emergency task property;
generating a re-planning scheme according to the task planning strategy;
deleting time T by using instruction in re-planning schemecApplying for an emergency measurement and control arc section for time rear limit;
generating a new data transmission receiving plan according to the re-planning scheme, and canceling TcThe data transmission plan after the moment examines and approves the new data transmission receiving plan;
generating a load control instruction containing an instruction deleting action according to the re-planning scheme, and finishing issuing control;
and judging the injection and execution conditions of the emergency command by the telemetering data, and updating a satellite effective load on-off time sequence table maintained by the ground system.
2. The dynamic emergency method for the task-driven-oriented remote sensing satellite, as claimed in claim 1, wherein the satellite executes task a with a load starting time Ta1The load shutdown time is set to Ta2。
3. The task-driven-oriented remote sensing satellite dynamic emergency method according to claim 2, wherein the acceptance of the emergency task a comprises:
if a plurality of emergency tasks exist, setting the load starting time of the earliest executed task as Ta1The load shutdown time is set to Ta2。
4. The task-driven remote sensing satellite dynamic emergency method as claimed in claim 1, wherein the satellite load boot period comprises: the starting time period of the camera and the data transmission subsystem.
5. The dynamic emergency method for the task-driven oriented remote sensing satellite, as claimed in claim 4, wherein the boot period b conflicts with the task a.
6. The dynamic emergency method for the task-driven remote sensing satellite as claimed in claim 5, wherein the judgment principle of the conflict between a and b is as follows:
b corresponds to a time period of [ Tb1,Tb2]If and only if [ Ta1,Ta2]∩[Tb1,Tb2]When not equal to phi, a conflicts with b.
7. The dynamic emergency method for the mission-driven-oriented remote sensing satellite according to claim 1, wherein the mission planning strategy comprises: timeliness is preferred, imaging quality is preferred, or target number is preferred.
8. The dynamic emergency method for task-driven remote sensing satellite according to claim 4, wherein T is TsThe values are as follows:
if there is an openingMachine period b conflicts with task a, TsGet Ta1And Tb1The former at medium time;
if the starting time interval conflicted with the task a does not exist, Ts＝Ta1。
9. The dynamic emergency method for task-driven remote sensing satellite according to claim 1, wherein T is TcThe values of (A) are as follows:
the load starting-up time of the first action in the re-planning scheme is assumed to be T0If the execution time of the delete instruction is T, then Tc＝T0-t。
10. A task-driven-oriented remote sensing satellite dynamic emergency system is characterized by comprising:
one or more processors;
a storage device for storing one or more programs,
when executed by the one or more processors, cause the one or more processors to implement the task-driven oriented remote sensing satellite dynamic emergency method according to any one of claims 1 to 9.
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