KR20040055552A - System for Simulating Communication and Broadcasting Satellite and Method for Processing Telecommand and Telemetry Data - Google Patents

Abstract

PURPOSE: A communication broadcast satellite simulation system, and a remote command data and remote measurement data processing method are provided to check performance and matching function of a payload by using a communication satellite simulator. CONSTITUTION: A communication broadcasting satellite model unit(20) receives a remote command related to a satellite bus, drives a corresponding model, and transmits state information of the satellite bus to a bus user interface(21). The bus user interface(21) transmits a remote command for driving a satellite bus model, receives corresponding remote measurement data and displays it, and drives a payload user interface(22). The payload user interface(22) transmits the remote command to the remote command/remote measurement data processor(23), and the remote command/remote measurement data processor(23) encodes and transmits the remote command to a PCTS(Power, Command and Telemetry System) controller(25) through a TCP/IP interface processor(24). The PCTS controller(25) interprets the remote command and transmits a corresponding command to a PIU(Payload Interface Unit)(26). The PIU(26) analyzes the corresponding command, converts it into a signal determined by each command, and transmits it to each part constituting a satellite payload(27) to control the satellite payload(27).

Description

System for Simulating Communication and Broadcasting Satellite and Method for Processing Telecommand and Telemetry Data}

The present invention relates to a communication broadcasting satellite simulation system and method thereof, and to a computer readable recording medium recording a program for realizing the method. More particularly, the present invention relates to a communication broadcasting satellite simulator without using a satellite bus body. Realizing the performance of the payload and verifying the matching function, processing the telecommunication data to the payload and processing the telemetry data of the payload, and realizing the communication broadcasting satellite simulation system and method and method for simulating and testing the functions of the entire payload. The present invention relates to a computer-readable recording medium having recorded thereon a program.

Recently, with the rapid development of information and communication technology, the demand for communication such as mobile communication, high speed internet, multimedia service, and satellite broadcasting service is rapidly increasing, and efforts to develop communication broadcasting satellite combining information communication and space technology to meet such communication demand This has been continued. The communication broadcasting satellite system includes a satellite that is a communication satellite, a ground control system that controls the satellite, and an earth station that is a ground communication facility. In addition, the satellite body includes a satellite payload that is in charge of communication with the earth station and a satellite bus body that is a structure for carrying and carrying the satellite payload.

The satellite payload consists of a Ku band and a Ka band repeater and an antenna. At this time, a ground test equipment (GSE: Ground Support Equipment) capable of testing the satellite payload to verify the performance of the satellite payload and verify the matching function is required. . Among the ground test apparatuses, an apparatus for testing electrical characteristics is an electrical ground support equipment (EGSE), which is used to test RF performance and telemetry command functions. In addition, the electrical ground test apparatus supplies power to the satellite payload through a power supply having power meter characteristics of the satellite, and functions of remote command and telemetry through a payload interface device connecting the satellite payload and the satellite bus. Do this.

However, according to the prior art, in order to verify the performance of the payload without the satellite bus body and to verify the matching function, the electrical ground test apparatus tests the remote command data and the telemetry data through the payload interface device connecting the satellite payload and the satellite bus body. There was a problem that can only be done.

The present invention has been proposed to solve the above problems, and the performance verification of the payload and the matching function of the payload by processing the remote command transmission to the payload and the telemetry data of the payload using a satellite broadcasting satellite simulator without a satellite bus body and It is also an object of the present invention to provide a communication broadcasting satellite simulation system capable of simulating and testing the functions of the entire satellite body, and a computer readable recording medium recording the program and a program for realizing the method.

1 is a detailed configuration diagram of an embodiment of a communication broadcasting satellite simulation system using a satellite bus body simulator according to the present invention.

2 is a detailed configuration diagram of an embodiment of a communication broadcasting satellite simulation system according to the present invention;

Figure 3 is a detailed structural diagram of one embodiment of the remote command data used in the present invention.

4 is a detailed structural diagram of an embodiment of telemetry data used in the present invention.

5 is a detailed flowchart of an embodiment of a method for processing telecommand data and telemetry data in a communication broadcasting satellite simulation system according to the present invention.

6 is an explanatory diagram of an output screen of the satellite bus body simulator according to the present invention;

7 is an explanatory diagram of an output screen of the electrical ground test apparatus according to the present invention.

* Explanation of symbols on the main parts of the drawing

10: satellite bus body simulator 11: electric ground test apparatus

12: satellite payload 13: remote command DB

20: satellite bus body model unit 21: bus user interface unit

22: payload user interface

23: remote command / remote measurement data processing unit

24: TCP / IP interface processing unit 25: PCTS control unit

26: payload interface unit (PIU) 27: satellite payload

In order to achieve the above object, the present invention provides a simulation system for verifying the performance of a satellite payload of a communication broadcast satellite and testing a matching function, by simulating the characteristics of the satellite bus body of the communication broadcast satellite for the satellite payload. Telecommunication broadcasting satellite bus simulating means for transmitting remote command data and receiving and analyzing telemetry data of the satellite payload, and connected with the satellite payload and telecommunication broadcasting satellite bus simulating means. Control the electrical ground test means and the components constituting the satellite payload for receiving remote command data from the satellite payload and transmitting the remote command data to the satellite payload, and for receiving telemetry data from the satellite payload for transmission to the telecommunication broadcasting satellite bus simulating means. Command The pre-defined commands, including remote storage media you have stored.

Meanwhile, the present invention provides a remote command data and telemetry data processing method in a simulation system for verifying the performance of a satellite payload of a communication broadcasting satellite and testing a matching function. A first step of reading, encoding and transmitting the corresponding remote command data in the base to the electrical ground test means, and displaying the command execution result; the electrical ground test means decodes and decodes the received remote command message. A second step of retrieving the command from the remote command database and transmitting the corresponding data bits to the satellite payload and displaying the command execution result, wherein the electrical ground test means collects the telemetry data from the satellite payload and stores the telemetry memory. After updating A third step of reading the updated telemetry data from the memory, encoding the encoded telemetry data, and transmitting the encoded telemetry data to the satellite bus body simulating means; and receiving and decoding telemetry data by the satellite bus body simulating means and analyzing the decoded telemetry data. And a fourth step of displaying.

On the other hand, the present invention, the simulation system for verifying the performance of the satellite payload of the communication broadcast satellite and the matching function, the satellite bus body simulating means for the corresponding remote command in the remote command database A first function of reading, encoding and transmitting to the electrical ground test means and displaying the command execution result, wherein the electrical ground test means receives and decodes the received remote command message and decodes the decoded command in a remote command database. A second function of retrieving and transmitting corresponding data bits to the satellite payload and displaying the results of the command execution, the electrical ground test means collecting telemetry data from the satellite payload to update telemetry memory and then updating the telemetry Data memory Realize a third function of reading, encoding, and transmitting to the satellite bus body simulating means and a fourth function of the satellite bus body simulating means to receive and decode telemetry data and to analyze and display the decoded telemetry data. A computer readable recording medium having a program recorded thereon is provided.

The above objects, features and advantages will become more apparent from the following detailed description taken in conjunction with the accompanying drawings. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a detailed configuration diagram of an embodiment of a communication broadcasting satellite simulation system using a satellite bus body simulator according to the present invention.

As shown in FIG. 1, the communication broadcasting satellite simulation system simulates the characteristics of a satellite bus body to transmit remote command data to a satellite payload to an electrical test apparatus, and to receive telemetry data from the electrical test apparatus. Receives remote command data from the satellite bus body simulator (CBSSIM) and the satellite bus body simulator (10) for analysis and transmits the data to the satellite payload, and collects the telemetry data from the satellite payload. Electrical ground support equipment (EGSE: 11) for transmitting to the satellite bus body simulator (10).

The remote command DB 13 is a database that stores commands for controlling components (for example, C-Switch, Input Switch Matrix, Channel Amplifier, TWTA, Output Switch Matrix, and Heater) constituting the satellite payload 12. , Mnemonic (remote command name), type of command (e.g. Relay Drive command, Heater control command, Serial command), board address of the payload interface unit 26 to which the command is to be transmitted, signal characteristics (pulse width, Cycles), data bits, and the like. The satellite bus body simulator 10 only refers to the mnemonic (remote command name) of the remote command DB 13, and the EGSE 11 refers to all data of the remote command DB 13.

The satellite bus body simulator 10 and the EGSE 11 may exchange data with each other via an Ethernet link using the TCP / IP protocol, and the Ethernet bus interface 10 and the EGSE 11 may be connected to each other through an Ethernet connection. Can be based on Hereinafter, an Ethernet link using the TCP / IP protocol will be described. However, it should be understood that the present invention is not limited thereto.

2 is a detailed block diagram of an embodiment of a communication broadcasting satellite simulation system according to the present invention.

As shown in FIG. 2, the satellite bus body simulator 10 includes a satellite bus body model unit 20, a remote command / remote measurement data processing unit 23, user interfaces 21 and 22, and a TCP / IP interface processing unit ( 24).

Meanwhile, the EGSE 11 includes a TCP / IP interface processor 24, a PCTS (Power, Command and Telemetry System) control unit 25, and a payload interface unit (PIU) 26. It is connected to the satellite payload 27 via 26.

The detailed operations of the elements included in the communication broadcasting satellite simulation system are described in detail as follows.

The satellite bus body model unit 20 receives a remote command related to the satellite bus transmitted through the bus user interface 21 and drives the corresponding model, and then uses the bus user interface as status information of the satellite bus generated in the form of telemetry data. (21). The bus user interface 21 transmits a remote command for driving the satellite bus model, receives and displays the telemetry data accordingly, and drives the payload user interface 22 via a control command.

The payload user interface 22 driven as described above transmits a remote command for controlling the satellite payload 27 to the remote command / remote measurement data processor 23, and the remote command / remote measurement data processor 23 transmits the remote command. The received remote command is encoded in a form that can be recognized by the PCTS controller 25 (see FIG. 3), and is transmitted to the PCTS controller 25 through the TCP / IP interface processor 24. The PCTS control unit 25 interprets the received remote command and transmits the command to the payload interface unit 26.

The payload interface unit 26 analyzes the command and converts it into a signal determined for each command and transmits the signal to each component constituting the payload 27 to control the payload 27.

In order to collect the telemetry data, the PCTS control unit 25 transmits a collection command received from the satellite bus body simulator 10 to the payload interface unit 26, and the payload interface unit 26 performs telemetry from the satellite payload 27. The data is collected and transmitted to the PCTS control unit 25, and the PCTS control unit 25 encodes the telemetry data (see FIG. 4) to transmit a remote command of the satellite bus body simulator 10 through the TCP / IP interface processing unit 24. / Transmission to the remote measurement data processing unit 23. The telecommand / remote measurement processor 23 decodes the transmitted telemetry data (see FIG. 4), transmits the same to the payload user interface 22, and displays the same.

3 is a detailed structural diagram of an embodiment of remote command data used in the present invention.

As shown in Fig. 3, the remote command data has mnemonics in 13-byte character form and arguments in 4-byte real form. The mnemonics are filled from the front, and when sending remote commands, the arguments are only used to adjust the gain or level of the channel amplifier, a satellite component.

4 is a detailed structural diagram of an embodiment of telemetry data used in the present invention.

As shown in FIG. 4, the argument of telemetry data is represented by two bytes in character form and used to define a data type of an EU (Engineering Unit) value. "F4" means 4-byte real data transfer, "I2" means 2-byte integer data transfer, and "C" means 4-byte character string transfer. EU value is composed of 4 bytes and 4 byte real number or 2 byte integer type for transmitting analog value such as voltage, current, temperature, etc. The byte character type is used.

FIG. 5 is a detailed flowchart illustrating a method of processing telecommand data and telemetry data in a communication broadcasting satellite simulation system according to the present invention.

First, when the satellite bus body simulator 10 requests a connection to the EGSE 11 and the EGSE 11 accepts the connection, a communication path is established (501) and waits for data reception. Once the communication path is established, the satellite bus body simulator 10 reads one of the remote commands in the remote command DB 13 and encodes it into the data format shown in FIG. 3 (502) using EGSE (TCP / IP protocol). 11) and displays the result of the command in the event window (503).

The transmitted remote command data is received by the EGSE 11 and then decoded by the PCTS control unit 504, and the corresponding data bit is retrieved by searching for the command transmitted from the remote command DB built in the EGSE 11. And transmits to (26) (505). The payload interface unit 26 analyzes the data bits and transmits the corresponding signals in the form of pulse signals or serial communication data to the satellite payload 27 and displays the result of the command in the event window (506).

Meanwhile, a process of collecting and processing telemetry data from the satellite payload 12 is as follows.

First, the telemetry memory of the satellite payload 12 is collected by the payload interface unit 26 periodically (for example, 1 second) or intermittently according to a user's request to update the telemetry memory (507). The PCTS control unit 25 reads this data from the memory, encodes it according to the data format shown in FIG. 4 (508), and transmits it to the satellite bus body simulator 10 using the TCP / IP protocol (509). The satellite bus body simulator 10 receives and decodes the telemetry data, analyzes the telemetry data, and displays the corresponding value in the event window (510).

6 is an explanatory diagram of an output screen of the satellite bus body simulator 10 according to the present invention. The satellite bus body simulator 10 outputs a result of transmitting a remote command to the EGSE 11 or a result of analyzing the remote measurement data received from the EGSE 11 as shown in FIG. 6.

7 is an explanatory diagram of an output screen of the EGSE 11 according to the present invention. The EGSE 11 receives a remote command from the satellite bus body simulator 10, processes the result, or transmits the telemetry data received from the satellite payload 27 to the satellite bus body simulator 10, and the like. Output to the screen as shown in

As described above, the method of the present invention may be implemented as a program and stored in a recording medium (CD-ROM, RAM, floppy disk, hard disk, magneto-optical disk, etc.) in a computer-readable form.

The present invention described above is capable of various substitutions, modifications, and changes without departing from the spirit of the present invention for those skilled in the art to which the present invention pertains. It is not limited by the drawings.

The present invention as described above, by using the satellite bus body simulator to process the remote command data and telemetry data without the payload interface device to clear and efficient remote command data and telemetry data between the satellite bus body simulator and the electrical ground test apparatus. It can be processed with.

In addition, the present invention has an effect that can test the function of the entire satellite by providing a payload function in the satellite bus body simulator.

Claims (11)

In the simulation system for verifying the performance of the satellite payload of the communication broadcasting satellite and testing the matching function, Telecommunication broadcasting satellite bus simulating means for simulating the characteristics of the satellite bus body of the telecommunication broadcasting satellite to transmit remote command data for the satellite payload, and to receive and analyze the telemetry data of the satellite payload; Connected with the satellite payload and communication broadcast satellite bus simulating means to receive remote command data from the communication broadcast satellite bus simulating means for transmission to the satellite payload, and receive telemetry data from the satellite payload to communicate with the communication broadcast satellite. Electrical ground test means for transmitting to the bus simulating means; And Remote command storage means for defining and storing a command for controlling the components constituting the satellite payload in advance Simulation system comprising a. The method of claim 1, The communication broadcast satellite bus simulating means, A satellite bus model unit which simulates the characteristics of the satellite bus body of the communication broadcasting satellite and operates according to a satellite bus body related remote command and outputs state information in the form of telemetry data; A bus user interface unit for transmitting remote command data for driving the satellite bus model unit and receiving and displaying the telemetry data accordingly; A payload user interface for outputting remote command data for the satellite payload and displaying telemetry data of the satellite payload; Remote command for encoding the remote command data output from the payload user interface unit into a form recognizable by the electrical ground test means, and decoding the telemetry data received from the electric ground test means and transmitting the decoded telemetry data to the payload user interface unit. A telemetry data processor; And A connection for transmitting remote command data from the remote command / telemetry data processor to the electrical ground test apparatus and receiving telemetry data from the electrical ground test means Simulation system comprising a. The method of claim 1, The electrical ground test means, A PCTS control unit for decoding and interpreting the remote command data received from the connection unit, transmitting the command to the payload interface unit, receiving and encoding telemetry data from the payload interface unit, and transmitting the encoded command to the connection unit; And A payload interface for analyzing the commands received from the PCTS controller and converting the signals into predetermined signals for each command and transmitting the signals to the components constituting the satellite payload to control the satellite payload and to receive telemetry data from the satellite payload part Simulation system comprising a. The method of claim 2, The remote command data encoded by the remote command / remote measurement data processing unit is Mnemonic, 12-byte character filled from the front; And Argument used to adjust the gain / level of the channel amplifier. Simulation system comprising a. The method of claim 3, wherein The telemetry data encoded by the PCTS control unit, Mnemonics, 12-byte characters, filled from the front; An argument used to define the data type of an EU value in two-byte character form; And 4-byte real-time data or analog data such as voltage, current, temperature, etc. 4-byte real-time data, 2-byte integer data, or 4-byte character data used to indicate the ON / OFF status of each component on the satellite or the position of the switch. EU value Simulation system comprising a. The method of claim 5, wherein The argument is, F4 when the EU value is 4-byte real data, I2 when the EU value is 2-byte integer data, and C respectively when the EU value is a 4-byte character string. Simulation system characterized in that. In the remote command data and telemetry data processing method in the simulation system of claim 1 for verifying the performance of the satellite payload of the communication broadcasting satellite and testing the matching function, A first step of the satellite bus body simulating means reading out and encoding the corresponding remote command data in the remote command database, transmitting the encoded remote command data to the electrical ground test means, and displaying a command execution result; Receiving, by the electrical ground test means, the received remote command message and then decoding it, retrieving the decoded command from a remote command database, transmitting the corresponding data bit to the satellite payload and displaying a command execution result; A third step of the electrical ground test means collecting telemetry data from the satellite payload to update the telemetry memory, reading the encoded telemetry data from the memory, encoding the encoded telemetry data, and transmitting the encoded telemetry data to the satellite bus body simulating means; ; And A fourth step of the satellite bus body simulating means receiving and decoding telemetric data and analyzing and displaying the decoded telemetric data. Telecommand data and telemetry data processing method comprising a. The method of claim 7, wherein The remote command data encoded in the first step is Mnemonic, 12-byte character filled from the front; And Argument used to adjust the gain / level of the channel amplifier. Telecommand data and telemetry data processing method comprising a. The method of claim 7, wherein Telemetry data encoded in the third step, Mnemonics, 12-byte characters, filled from the front; An argument used to define the data type of an EU value in two-byte character form; And 4-byte real-time data or analog data such as voltage, current, temperature, etc. 4-byte real-time data, 2-byte integer data, or 4-byte character data used to indicate the ON / OFF status of each component on the satellite or the position of the switch. EU value Telecommand data and telemetry data processing method comprising a. The method of claim 9, The argument is, F4 when the EU value is 4-byte real data, I2 when the EU value is 2-byte integer data, and C respectively when the EU value is a 4-byte character string. Telecommand data and telemetry data processing method characterized in that. The simulation system of claim 1, further comprising a processor, for verifying the performance of the satellite payload of the telecommunications satellite and testing the matching function. A first function of the satellite bus body simulating means for reading and encoding a corresponding remote command in a remote command database, transmitting the encoded remote command to the electrical ground test means, and displaying a command execution result; A second function of the electrical ground test means receiving and decoding the received remote command message, retrieving the decoded command from a remote command database, transmitting the corresponding data bit to the satellite payload, and displaying a command execution result; A third function of the electrical ground test means collecting telemetry data from the satellite payload to update the telemetry memory and then reading and encoding the updated telemetry data from a memory and transmitting the encoded telemetry data to the satellite bus body simulating means; And A fourth function for the satellite bus body simulating means to receive and decode telemetry data and to analyze and display the decoded telemetry data A computer-readable recording medium having recorded thereon a program for realizing this.