JP2002175353A - Operation plan planning method and operation plan planning device using the method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a planning device of an operation plan of a satellite, by which a work to recreate an operation plan so as not to impede an operation is performed efficiently, when causes which disable implementation of the plan, such as fluctuation of visible time is generated. SOLUTION: The latest data of the visible time 91 is inputted from a visible time input part 140 with a prescribed timing. An operation plan creating part 120 compares it with the previously inputted visible time, and when a time lag over prescribed time is generated between both, notifies an operation requesting origin of a fact that the implementation of the previously planned operation schedule is disabled due to the time lag. Thus, formation of the operation plan conforming to he visible time after fluctuation is realized, so as to be in time for the operation by promoting recreation of an operation request.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an operation planning device for a communication satellite or an astronomical observation satellite.

[0002]

2. Description of the Related Art Since the available time of a communication satellite or an astronomical observation satellite (the time when a satellite is at a position where it can communicate with a communication base station) is limited, it is necessary to efficiently use the available time. There is. Therefore, in the operation plan of the satellite tracking control equipment used for the operation control of the satellite, a plurality of operation plans are drafted and created (this is called an operation request) by designating the operable time of the equipment for each satellite. Then, it is created by adjusting the competition such as the operation time between a plurality of operation request plans. The operable time is specified based on a time (hereinafter, referred to as a visible time) in which it is predicted that the satellite tracking control equipment used for operation control of the satellite can communicate with the satellite. (Of course, depending on the purpose of the satellite, even if it is in a position where communication is not possible, there are those that automatically perform astronomical observation work etc. according to a pre-programmed schedule, but the operation referred to here is a base station It is limited to the operation assuming the communication between.)

FIG. 4 shows, for example, Japanese Patent Application Laid-Open No. 58-101900.
1 shows a configuration of a conventional satellite operation planning device similar to that disclosed in Japanese Patent Application Laid-Open Publication No. H10-110,026. In this publication, this device is called operation control equipment. In the figure, 1 is an operation control console, 2 is an operation plan input unit, 3 is an operation monitoring control unit,
4 is an operation scheduling unit, 5 is a parameter setting unit,
6 is an n unit operation control unit, 7 is an input / output control unit, 8
Denotes an operation state monitor unit, 10 denotes an operation planning device, and 11 denotes each operated facility in the station.

Next, the operation will be described. First, the name of an artificial satellite to be operated, an operation work item, an operation time, and various operation modes are input from the operation plan input unit 2 of the operation control console 1 in the operation plan drafting apparatus 10 and notified to the operation scheduling unit 4. Upon receiving this notification, the operation scheduling unit 4 selects equipment necessary for the satellite operation from the n equipment unit operation control units 6, determines an operation schedule,
Operation control is performed using the time as a key. Each operated facility 1
The control 1 is performed via the input / output control unit 7 by the module in the facility unit operation control unit 6 corresponding to each operated facility 11 using the parameter value defined in advance by the parameter setting unit 5. The operation status of each operated facility 11 is monitored by sending status data to the operation status monitoring unit 8 via the input / output control unit 7, monitoring the status, and sending the status data to the operation monitoring control unit 3 of the operation control console 1. Is output. In this way, control of all equipment used for satellite operation and operation state monitoring are automatically executed.

Therefore, according to this operation control system,
Satellites to be operated and controlled are added using the fact that the equipment to be used can be freely combined and scheduled for each equipment according to each artificial satellite, and the setting parameter values of each equipment can be freely changed according to the satellite. Can be dealt with in a short period of time at low cost. In addition, by controlling the operation of all equipment to be operated, labor saving, accuracy, and speeding up of satellite operation can be achieved.

As described above, although it is possible to easily change the operation plan including the change of the operation time, the time of the operation plan is determined by the operation time desired by the side drafting the operation plan. However, the orbit prediction of a satellite includes a certain degree of error, so that the visibility time gradually deviates from the predicted one, and the deviation increases daily and the operable time deviates. As a result, for example,
As shown in FIG. 5, it is often the case that in a real satellite operation, a plan initially planned becomes useless.

[0007] To facilitate understanding, the above will be described using an example of a time schedule. FIG. 5A is a time schedule showing an initial plan planned at time t0, where 211a, 211b, 211c, and 211d are visible times, with which communication becomes possible or communication becomes impossible over time. Is shown. 231a to 231
d indicates an operation plan time planned and determined corresponding to the visible times 211a to 211d (they are not always coincident, and as shown by 231X, there is no use plan and the time is empty. May occur.)

[0008] FIG. 5B shows that, at time t1, the visible time 231a is updated based on the updated visible time information.
231d has changed. The visible time 211a has already passed, and the operation planning time 231a
Is almost finished, but the visible time 211a, 211b
Up to the plan, and the operation planning time is also executed as planned. However, the visible times 211c and 211d are shifted after the first scheduled time, as indicated by 212c and 212d, respectively. When such a shift occurs, the shift and its degree are known at least several hours to several days before.

[0009] In such a case, some objects can be achieved if they are operated with a delay in time. However, for example, as in certain types of astronomical observations, changing the time too much does not make sense, In some cases, the initial observation schedule must be changed.

Although the change in the visible time has been described as a reason for changing the operation plan, the plan may be forced to be reviewed due to, for example, a failure of the equipment on the planning side. In short, the change of the operation plan for various reasons cannot be changed only by mere passing of time, but must be determined in consideration of various conditions provided for each content of the operation plan. This is a laborious task.

[0011]

Since the orbit calculation of a satellite involves some error, the visible time (which predicts that the satellite tracking and control equipment can communicate with the satellite, which is the basis for specifying the operation time of the operation request) Time), after planning,
It fluctuates over time. In addition, the planning side may have various reasons after the planning, for example, a reason that it becomes impossible to execute the planned plan as it is due to equipment failure or the like. Regardless of the cause, such as the difference in the visible time or the reason for the planning side, every time a change is made, extremely complicated re-planning work takes a lot of time and effort. There was a problem that had to be done.

According to the present invention, in order to solve the above-mentioned problems, in the event that there is a reason that it becomes impossible to carry out a plan, for example, when the visibility time fluctuates, the operation is performed so as not to hinder the operation. An object of the present invention is to provide a satellite operation plan drafting device capable of efficiently performing a task of re-creating a plan.

[0013]

According to the operation plan planning method of the present invention, an operation plan of an artificial satellite is adjusted in accordance with a request of an operation requester who wants to use the artificial satellite and a operable time of the artificial satellite. An operation planning method for planning
From the procedure for inputting and storing the operable time data each time the data is updated, the procedure for inputting the operation request plan prepared by the operation requester, and the operation request plan, those that can be executed during the operable time Select the procedure to store as the operation schedule, compare the stored operation schedule with the latest data of the operable time, determine whether the operation schedule can be executed at the latest operable time, For example, a procedure for outputting a notification signal notifying the operation requester to that effect is included.

An operation plan drafting apparatus according to the present invention is an operation plan drafting apparatus for drafting an operation plan of an artificial satellite in accordance with the operable time of the artificial satellite, and inputs data of the operable time from outside. From the operable time input part, the operation request input part for inputting the operation request draft made by the operation requester, and the operation request An operation plan creation unit that stores the operation schedule together with the data, compares the latest data of the operable time with the previous operable time data stored in the operation plan creation unit, and sets a predetermined time between them. If there is the above difference, a notification output unit that outputs a notification signal for notifying the operation requester that the operation schedule is not executable is provided.

Further, the notification output unit compares the latest data of the operable time with the previous operable time data stored in the operation plan creating unit, and compares the latest data of the operable time with a predetermined time which is longer than a predetermined time. If there is a difference, an operation schedule having a difference of a predetermined time or more is deleted from the storage of the operation plan creation unit.

An operation plan drafting device for drafting an operation plan of an artificial satellite in accordance with the operational time of the artificial satellite, comprising an operational time input unit for inputting the latest data of the operational time, From the operation request draft input section for inputting the operation request draft created by the operation requestor, from the operation request draft,
An operation plan creator that selects the data that matches the latest operable time data and stores it as an operation schedule together with the operable time data, and an operation that stores the latest operable time data in the operation plan creator A notification output unit for determining whether or not the operation schedule can be executed in the latest operable time by comparing with the schedule, and outputting a notification signal for notifying the operation requester if the operation can not be executed. Things.

The notification output unit compares the latest data of the operable time with the operation schedule stored in the operation plan creation unit, and determines whether the operation schedule can be executed in the latest operable time. If the operation schedule cannot be executed, the operation schedule that cannot be executed is deleted from the storage of the operation plan creation unit.

In addition, the visible time of an artificial satellite is used instead of the operable time.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 of the Invention Hereinafter, the present invention will be described in detail with reference to the drawings. FIG. 1 is a configuration diagram of an operation planning device according to a first embodiment of the present invention.
Includes an operation planning device described below. First, the visible time data 91 of the satellite is created by another device (not shown). The visible time data 91 is updated at appropriate time intervals (for example, every several days). 92
Is a satellite operation request time (operation request plan), and a plurality of requests are submitted from a plurality of request sources (requesters) not shown. This includes some that match the visible time data 91 and those that do not.

Reference numeral 110 denotes an operation request input unit.
Is entered. Reference numeral 140 denotes a visible time input unit to which the above-described visible time data 91 is input, and is input every time the visible time data 91 is updated. 120 is an operation request input unit 1
The operation plan creation unit connected to the output 10 outputs an operation request, which will be described later in detail, selects an operation request that matches the visible time data 91 from the operation request plan 92 and creates an operation plan. Stored together with 91. An operation plan output unit 130 outputs the operation plan created and stored by the operation plan creation unit 120, and a notification output unit 150 outputs a notification signal of the operation plan creation unit 120 described later.

As described above, the visible time data 91 is not fixed once inputted, but is updated from time to time, and thus changes with time. FIG. 2 is a time chart for explaining the relationship between the visible time and the operation planning time. FIG. 2 (a) shows the state at the time of the initial planning, FIG. Further, c) shows a state after the plan is re-created by the operation plan drafting apparatus of the present embodiment. 211c and 211d indicate the first visible time predicted at the time of the first planning, and 212d indicates the second visible time that has changed thereafter. Reference numerals 221c and 221d denote a first operation request time (proposed operation request) at the time of the first plan, 223d denotes a second operation request time at the time of replanning, and 231c and d denote the first operation time determined by the first plan. 233d is the second planning time determined at the time of subsequent re-planning.
Is the operation planning time.

Next, the operation will be described. The visible time data 91 is updated, for example, every few days by an orbit calculator or the like (not shown) based on the latest observation data of the satellite. The updated visible time data 91 is input from the visible time input unit 140. First, a description will be given from the time of the first operation planning (FIG. 2A). Based on the first visible time 211c, d of the satellite to be operated, a plurality of operation request times (operation request plans) requested by the user, for example, the first operation request times 221c, d. Input from the request input unit 110. Since the diagram becomes complicated,
Here, only 221c and 221d are listed as the draft requirements,
May be more.

When the operation times overlap among the plurality of input first operation request times 221c, d, e,..., The operation plan creation unit 120 adjusts the overlapped operation request times. To decide which one to choose,
The selected operation request schedule is converted to the first operation plan time 2
31c and d.

Thereafter, as shown in FIG. 2B, the visible time fluctuates and the first visible time 211d is changed to the second visible time 2d.
When it becomes 12d, the changed second visible time 212d
Deviates from the first operation planning time 231d, and cannot be executed as it is. First, when the second visible time 212d is input from the visible time input unit 140, the second visible time 212d input by the operation plan creation unit 120 is compared with the first operation plan time 231d. Here, if there is a deviation of a predetermined time or more, the notification output unit 150 sends the first operation plan time 231
A notification signal is output to the request source (requester) of the first operation request time 221d corresponding to the notification that the error has occurred and cannot be performed.

The request source receiving this notification deletes the first operation request 221d (retracts the request) and creates a second operation request time 223d created based on the second visible time 212d.
Is input from the operation request input unit 110, the operation plan creation unit 120 re-creates the operation plan, and creates a second operation plan time 233d corresponding to the updated visible time. At this time, the original first operation time 231d is naturally deleted.

When the notification signal is output, the operation plan creation unit 120 may delete the operation plan time 231d that has become infeasible, without asking the source of the request. In the present embodiment, the description has been made using whether or not the operation request matches the visible time as a criterion for selecting the operation request. However, the criterion from which the operation time is selected is not limited to this. For example, when it is impossible to execute at the determined time due to the planning side (for example, when there is a mistake in the plan), or when the plan is re-created under the direction of a more authoritative upper management Also applicable to

Further, in the present embodiment, the visible time, the operation request time, and the operation planning time are described as if the start time and the end time are almost the same, but this is an example. Was explained.
They do not need to be exactly the same. The description that the visible time is shifted does not mean the time shift itself, but means that the relationship between them is not satisfied.

The visible time is the operable time referred to in the present invention. The visible time input unit 140 is the operable time input unit according to the present invention. The operation request input unit 110 is an operation request plan input unit according to the present invention. The operation request time and the operation request time (draft) are both operation request plans referred to in the present invention. The operation plan and the operation plan time are both operation schedules according to the present invention.

Embodiment 2 FIG. 3 shows an operation planning method used in the operation planning apparatus according to the first embodiment.
Will be described in detail. FIG. 3 is a flowchart showing the operation planning method of the present invention. In the figure, visible time data is input in step S301. Needless to say, this data is the latest data at this point. This data is generally provided by observation and may be updated regularly or irregularly. In some cases, the input is performed only when a large change is observed. Next, in step S302, it is checked whether there is an operation plan that has been previously planned and stored. If there is no plan stored here, the process jumps to step S303 and inputs a plurality of operation request times (drafts). Next, in step S304,
An operation request time (draft) that can correspond to the previously input visible time is selected, an operation plan is created, and step S30 is performed.
In step S306, the plan is stored together with the visible time, and in step S306, the plan is output and provided for execution.

If there is already a planned operation plan in step S302, it is determined in step S311 whether or not the stored operation plan can be implemented with the newly input visible time data. (This judgment work may be, for example, a method of judging the contents of operation,
Alternatively, the determination may simply be based on whether the visible time has shifted.) If it is determined in step S311 that the operation is impossible, in step S312, the fact that the operation is not possible in the updated visible time is notified based on the operation request, and a request is made to review the operation request time (draft).

Step S301 is a procedure for inputting and storing the data of the operable time referred to in the present invention. Step S303 is a procedure for inputting an operation request plan planned based on the operation request. Steps S304 and S305 are procedures for selecting, from among the operation request proposals, the one that matches the latest data of the operable time, and storing it as an operation schedule. In steps S311 and S312, the latest data of the operable time is compared with the data of the operable time input last time, and it is determined whether or not the operation schedule can be executed at the latest operable time. If there is, the procedure is to output a notification signal to the operation request source.

[0032]

As described above, according to the operation planning method of the present invention, when the operable time changes,
Since it is determined whether or not the operation schedule can be implemented, and if the operation schedule cannot be implemented, the operation schedule is notified to the source of the operation request, so that the operation plan can be easily reviewed.

Further, according to the operation plan drafting apparatus of the present invention, when the visible time fluctuates beyond a predetermined value, a notification is issued from the notification output unit based on the operation request, and the request source is reconsidered of the operation plan. It does not hinder operation.

In addition, since the operation schedule whose visible time has been changed is deleted from the operation schedule, the workability at the request source is improved.

If the operation schedule becomes infeasible as a result of the visible time fluctuating beyond a predetermined value, a notification is issued from the notification output unit based on the operation request, and the request source is reconsidered the operation plan. It does not hinder operation.

In addition, since the operation schedule that cannot be implemented as a result of the change of the visible time in the operation schedule is deleted, there is an effect that the workability at the request is improved.

Since the operable time is the visible time of the satellite, the satellite can be operated efficiently.

[Brief description of the drawings]

FIG. 1 is a configuration block diagram of an operation planning device according to a first embodiment of the present invention.

FIG. 2 is a diagram showing a relationship between a visible time of an operation plan, an operation request time, and an operation plan time of an operation plan created by the apparatus of FIG.

FIG. 3 is a flowchart showing an operation planning method according to the present invention.

FIG. 4 is a configuration diagram of a conventional operation planning device.

FIG. 5 is a time chart for explaining the operation of FIG. 4;

[Explanation of symbols]

91 visible time data, 92 operation request time (draft), 100 operation plan drafting device, 110 operation request input unit, 120 operation plan creation unit, 130 operation plan output unit, 140 visible time input unit, 150 notification output unit, 211, 212 visible time, 221,
223 Operation request time, 231, 233 Operation plan time.

Claims (6)

[Claims] 1. An operation planning method for planning an operation plan of an artificial satellite in accordance with a request of an operation requester who wants to use the artificial satellite and an operable time of the artificial satellite, A procedure for inputting and storing possible time data every time the data is updated, a procedure for inputting an operation request draft prepared by the operation requester, and a procedure for performing the operation possible time from the operation request plan Selecting a thing and storing it as an operation schedule, comparing the stored operation schedule with the latest data of the operable time, and determining whether or not the operation schedule can be implemented at the latest operable time, Outputting to the operation requester a notification signal notifying that the operation is impossible, the operation planning method. 2. An operation plan drafting apparatus for drafting an operation plan of an artificial satellite in accordance with the operable time of the artificial satellite, wherein the operable time data is input each time the data is updated. Operable time input unit to perform, an operation request draft input unit for externally inputting the operation request draft prepared by the operation requester, and selecting an executable one during the operable time from the operation request draft, An operation plan creation unit that stores the operation time together with the operation time data, and compares the latest data of the operation time with the previous operation time data that is stored in the operation plan creation unit. And a notification output unit that outputs a notification signal notifying the operation requester that the operation schedule is not executable, if there is a difference equal to or longer than a predetermined time predetermined. Operational planning apparatus according to claim that there were example. 3. The notification output unit compares the latest data of the operable time with the previous operable time data stored in the operation plan creating unit, and determines whether or not the latest data of the operable time is equal to or longer than a predetermined time set between the two. 3. The operation plan drafting apparatus according to claim 2, wherein if there is a difference, the operation schedule having a difference of the predetermined time or more is deleted from the storage of the operation plan creation unit. 4. An operation plan drafting apparatus for drafting an operation plan of an artificial satellite in accordance with the operable time of the artificial satellite, wherein the latest data of the operable time is updated each time the data is updated. Operable time input unit for inputting, an operation request proposal input unit for inputting an operation request draft prepared by an operation requester, and selecting an operation request plan that can be executed during the operable time from the operation request plan, An operation plan creating unit that stores as an operation schedule together with possible time data, compares the latest data of the available operation time with the operation schedule stored in the operation plan creation unit, and determines that the operation schedule is the latest operation A notification output unit that determines whether or not the operation can be performed within a possible time, and outputs a notification signal notifying that to the operation requester if the operation cannot be performed; Operational planning apparatus according to claim. 5. The notification output unit compares the latest data of the operable time with an operation schedule stored in an operation plan creation unit, and determines whether the operation schedule can be executed at the latest operable time. 5. The operation planning device according to claim 4, wherein if the execution is impossible, the operation schedule that cannot be performed is deleted from the storage of the operation plan creation unit. 6. The operation planning device according to claim 2, wherein the visible time of the artificial satellite is used instead of the operable time of the artificial satellite.