KR20090066623A - Satellite mission control apparatus - Google Patents

Abstract

A satellite control apparatus is provided to share a command transmission module and a telemetry receiving module with a ground test device, thereby preventing mismatch between command generation and data decoding result. A CCSDS(Consultative Committee for Space Data System) processing unit(11) processes transceiving data with an artificial satellite(40) properly for a CCSDS format. A memory DB(32) stores a database file. A command plan manager unit(12) arranges commands to be transmitted to the artificial satellite. A command frame generator(31) transfers a generated frame to the CCSDS processing unit after generating the command frame. A telemetry receiver(34) extracts an effective value by referring to a telemetry table.

Description

Satellite Control Device {Satellite Mission Control Apparatus}

The present invention relates to a ground station satellite control device, and more particularly, to a satellite control device sharing a ground test device with a command transmission module and a telemetry reception module.

Satellite technology, which represents space technology, is a complex technology that combines optics, systems engineering, electronics, materials engineering, mechanical engineering, computer engineering, and many other disciplines to design, build, assemble, and verify performance of satellites. .

In particular, satellite technology is a large-capacity technology that consumes hundreds of billions of dollars in launching one satellite, and the economic loss is huge because it cannot be repaired to the ground once it is broken after launch.

Therefore, in order to guarantee high safety and reliability in the space environment where the satellite is launched and operated, it is accompanied by rigorous test evaluation on the ground at each stage from initial design to manufacturing and performance verification.

In general, the electronic ground support equipment is used to verify that the satellite functions normally according to the requirements of the satellite power meter, attitude control system and telemetry command system before the satellite design, assembly and launch. Satellite function tests are being conducted using EGSE. In particular, functions such as command and data transmission, telemetry analysis and display for satellite body function test are performed in Satellite Overall Control Equipment (SOCE).

Meanwhile, before satellite launch, satellite function test is performed through EGSE, and if there is no problem, launch the satellite into space through projectile. After that, the ground station controls the satellite to perform a given mission. The equipment used is the MCE (Mission Control Equipment). MCE performs the same command and data transmission, telemetry analysis and display functions as SOCE used in satellite functional test equipment.

However, SOCE and MCE have been independently developed with different design concepts because they pursue different objectives of satellite function test and satellite control operation, respectively. As these two devices were developed independently with different design concepts, there were some cases where the command generation and data decryption results were inconsistent compared to when the satellite function test was performed in actual satellite control operation. In addition, there was a problem in that waste of duplicate development of the same function occurs.

Therefore, the technical problem to be achieved by the present invention is to provide a ground station satellite control apparatus for sharing the ground test apparatus, command transmission module and telemetry reception module.

According to an aspect of the present invention, there is provided a CCSDS processing unit for processing transmission / reception data with satellites according to a CCSDS format, a memory DB storing a database file including a packet table and a telemetry table; A command plan manager unit for arranging commands to be transmitted to the satellite in order, and processing the commands arranged in the order in a predetermined format with reference to the packet table to generate a command frame and then transfer the command frame to the CCSDS processing unit. And a telemetry receiver for extracting an effective value from the data received from the CCSDS processing unit by referring to the telemetry table, and a telemetry viewer for displaying the extracted effective value. , The memory DB, the command frame generator and the image The US telecommunications satellite Tree receiver share function test equipment (SOCE) ground test equipment.

Preferably, the CCSDS processing unit stores the VCDU data obtained by processing data received from the satellite according to a CCSDS format as raw data in the memory DB.

It is desirable to have the same database schema as the SOCE.

Thus, according to the present invention, it is possible to prevent inconsistency between the existing command generation and data decryption results generated between the satellite control operation and the satellite function test, and it is possible to prevent waste due to the overlapping development of the same function.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention.

1 is a view provided to explain the ground station satellite control device sharing the ground test apparatus and the command transmission module and the telemetry receiving module according to the present invention.

Referring to FIG. 1, the ground test apparatus 20 includes a CCSDS processor 21, a command selector 22, a telemetry reporter 23, a command frame generator 31, a memory database 32, and a database. The management unit 33, the telemetry receiver 34, and the database file loader unit 35 are included.

CCSDS processing unit 21 may be implemented as CORTEX equipment of Telecommand Telemetry Control Equipment (TTCE) of the ground test device 20, command selection unit 22, telemetry report unit 23, command frame generator ( 31), the memory database 32, the database management unit 33, the telemetry receiver 34, and the database file loader unit 35 are SOCE (Satellite Overall Control Equipment (SOCE)) used in the ground test apparatus 20. Can be implemented.

On the other hand, the satellite control device (Mission Control Equipment, MCE: 10) according to the present invention is the CCSDS processing unit 11, command plan manager unit 12, telemetry viewer unit 13, command frame generation unit 31 , A memory database 32, a database management unit 33, a telemetry receiver 34, and a database file loader unit 35, and as illustrated in FIG. 1, a command frame generation unit 31, The memory database 32, the database manager 33, the telemetry receiver 34, and the database file loader 35 are implemented to share the equipment of the SOCE.

First, the ground test apparatus 20 is demonstrated.

The ground test apparatus 20 is a device for verifying that the power meter, the attitude control system, the telemetry command system, etc., operate properly before launching the satellite.

The operation of the ground test apparatus 20 will be described with reference to FIG. 2.

1 and 2, when a command mnemonic to be transmitted to the satellite is selected by the satellite test manager, the command selector 22 transmits the command mnemonic to the command frame generator 31 (S210). In more detail, the command selector 22 may be implemented as a module for receiving a command mnemonic from a user in a Real-Time Test Manager (RTTM) constituting the SOCE of the ground test apparatus 20.

When the command mnemonic selected by the command selector 22 is delivered, the command frame generator 31 refers to the memory hexa (Hexa) value of the command mnemonic by referring to the memory database 32 (hereinafter, referred to as 'memory DB'). A command frame is generated according to a predetermined command format (S220).

Afterwards, the CCSDS processor 21 encapsulates the command frame transmitted from the command frame generator 31 into a command link transmission unit (CLTU) in accordance with a Consultative Committee for Space Data System (CCSDS) standard, through a cable to the satellite 40. It transmits to the baseband (baseband) (S230).

Next, the CCSDS processing unit 21 completes synchronization pattern detection, de-randomizing, RS decoding through the data coming down in response to the satellite command through CCSDS processing, and extracts only the VCDU (Virtual Channel Data Unit) data. And transmits to the telemetry receiver 34 (S240).

The telemetry receiver 34 extracts an effective value (telemetry) from the received VCDU data with reference to the memory DB 32 (S250), and displays it to the user through the telemetry report unit 23. (S260). To this end, the telemetry receiver 34 includes a telemetry parsing engine 34a. On the other hand, the telemetry receiver 34 stores the received VCDU in the memory DB 32 through the DBMS management unit 33 because it can later retrieve and use the past data (S270).

Next, the operation of the satellite control apparatus 10 will be described with reference to FIG. 3.

Referring to FIGS. 1 and 3, the command plan manager unit 12 arranges commands to be transmitted to the satellite 40 in advance in order to operate the satellite, and commands the commands at the instant of communication with the satellite 40. The frame generator 31 is transferred to the frame generator 31 (S310).

The command frame generation unit 31 processes the command transmitted from the command plan manager unit 12 in a predetermined format, generates a command frame, and transmits the command frame to the CCSDS processing unit 11 (S320).

The CCSDS processing unit 11 encapsulates the command frame transferred from the command frame generation unit 31 into CLTU according to the Consultative Committee for Space Data System (CCSDS) standard, RF modulates the RF, and transmits the RF to the satellite 40 (S330). . The CCSDS processing unit 11 may be implemented as CORTEX equipment of TTC (Tracking, Telemetry, and Command Subsystem).

Next, the CCSDS processing unit 11 completes synchronization pattern detection, de-randomizing, and RS decoding of data coming down in response to the satellite command through CCSDS processing, and only VCDU (Virtual Channel Data Unit) data. The extraction is transmitted to the telemetry receiver 34 (S340).

The telemetry receiver 34 extracts an effective value (telemetry) from the received VCDU data with reference to the memory DB 32 and displays it to the telemetry viewer 13 (S350). On the other hand, since the telemetry receiver 34 can retrieve and use the received VCDU later as the satellite test, the data is stored in the memory DB 32 through the DBMS manager 33 in the form of raw data. (S360).

As described above, the satellite control apparatus 10 includes the command frame generation unit 31, the memory database 32, the database management unit 33, the telemetry receiver 34, and the components of the ground support apparatus 20. In order to share and use the database file loader unit 35, the following conditions must be satisfied.

First, in order for both devices 10 and 20 to operate, a database file consisting of a packet table and a telemetry table must be uploaded through the database file loader 35 and stored in the memory DB 32. The packet table stores information about packets used for telemetry delivery. In more detail, the packet table includes information on VCID, packet ID, and mnemonics constituting the packet for each packet. The telemetry table contains information about the mnemonics and their child mnemonics. In order to share and use these database files, both devices 10 and 20 are implemented to use the same DB schema.

In addition, the operating system applied by SOCE is implemented to be used by MCE. In addition, when developing SOCE, a 3-Tier implementation is used to separate the graphical user interface (GUI) from the application to form a presentation layer. Accordingly, even though the GUI is implemented differently from the SOCE in the MCE having a different purpose from the SOCE, the command transmission module and the telemetry receiving module can be shared with each other.

Although the preferred embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements of those skilled in the art using the basic concepts of the present invention defined in the following claims are also provided. It belongs to the scope of rights.

1 is a view provided to explain the ground station satellite control device sharing the ground test apparatus and the command transmission module and the telemetry receiving module according to the present invention.

2 is a view provided to explain the operation of the ground test apparatus.

3 is a view provided to explain the operation of the satellite control apparatus.

Claims (3)

A CCSDS processing unit for processing data transmitted / received with satellites in accordance with a CCSDS format; A memory DB for storing a database file consisting of a packet table and a telemetry table; An instruction plan manager unit for arranging instructions to be transmitted to the satellite in order; A command frame generation unit which processes the commands arranged in the order in a predetermined format by referring to the packet table, generates a command frame, and transmits the command frame to the CCSDS processing unit; A telemetry receiver for extracting an effective value from the data received from the CCSDS processor by referring to the telemetry table; And, A telemetry viewer unit displaying the extracted effective value; Including, And the memory DB, the command frame generator, and the telemetry receiver are shared with the satellite function test equipment (SOCE) of the ground test apparatus. The method of claim 1, And the VCDU data obtained by processing the data received from the satellite according to a CCSDS format by the CCSDS processing unit as raw data in the memory DB. The method of claim 2, Satellite control apparatus having the same database schema as the SOCE.

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