KR20070000261A - Mobile terminal system for satellite communication - Google Patents

Abstract

A portable terminal system for satellite communication is provided to drive a motor by an antenna pointing method which considers an inclined state and to be capable of communication with each module of a terminal within one board, thereby automatically carrying out an antenna pointing function. An antenna unit(100) transceives a wireless signal with a satellite. An antenna driver(400) conducts position tracking of the antenna unit(100). A transceiver(300) amplifies and converts the wireless signal. A peripheral board interface unit(600) controls an inputted/outputted signal. A sensor unit(900) senses various operational states. A remote controller wirelessly controls a portable terminal system in a remote place. A modem unit(1000) converts the inputted/outputted signal. An operation panel unit(200) operates the system or is configured to make a user visually confirm the operational states. An interface module unit(700) interfaces signals inputted/outputted from the transceiver(300), the interface unit(600), the modem unit(1000), and an IP(Internet Protocol) router receiver(1120). A power unit(500) supplies driving power to various sensors and internal modules.

Description

Mobile terminal system for satellite communication

The present invention relates to a portable terminal for satellite communication, and more particularly, to a portable terminal for transmitting and receiving data at a satellite frequency of a predetermined band.

Satellite communication is a long-distance communication method in which a satellite acts as a relay station. A satellite communication is a communication method that allows a satellite, which is launched from outside the atmosphere, to relay communication. This method makes the communication area wider and enables very high speed transmission using high frequency radio waves. Some satellites are stationary satellites that appear to be stationary on Earth's orbit by orbiting the earth at the same speed as the Earth's rotation time.

Since satellite communication uses microwaves, high-speed, high-capacity communication is possible, and a wide area (such as a whole country) can be a communication area. In addition, even communication is possible regardless of terrain, and even if a disaster occurs, communication is not restricted. However, due to the round-trip time of the radio wave (about 0.24 seconds), the radio wave is delayed when voice communication is performed, and there is a disadvantage that there is no security of information. And because it uses solar cells as its power source, instantaneous loss of communication can occur when satellites are in the shadow of the earth or when heavy rains pour.

Applications of satellite communication include international telephone relay network and remote medical service using broadband transmission, personal mobile communication in the mobile communication field, air mobile communication, maritime communication, and flood control and forecasting and river using remote monitoring and control functions. It is used for monitoring, meteorological observation, and atmospheric environment measurement.

The frequency used for satellite broadcasting is assigned to the SHF band from 1.5GHz to 22GHz. This frequency has a very short wavelength (20cm to several tens of millimeters) and is also called microwave and has similar characteristics to light. The microwave is transmitted along the line of sight to the satellite's main coverage area and is unobstructed by the earth's ionosphere. The advantage of satellite broadcasting is that since the coverage is wide, when satellites are used to relay TV, telephone, computer signals, etc., they can be received anywhere on the earth without any difficulty if they are within the service area of the satellite.

The frequencies used for satellites are the L, S and C bands, which are used as the IF frequencies of satellite equipment. The C band is mainly used in the United States and has the nickname of the global beam. The Ku band, which is used as a general band, has been used since the late 1970s and early 1980s. The Ku band uses this frequency in some terrestrial networks, but it can transmit higher power signals than the C band.

The frequency band of each band is L band (0.8 to 2.0 GHz, maritime communication, mobile communication), S band (2 to 3 GHz, satellite broadcasting), C band (3 to 6 GHz, fixed communication), X band (7 to 9 GHz, Fixed communications, military), Ku band (12-14 GHz, fixed communications, satellite communications), K band (20 GHz, fixed communications), Ka band (30 GHz and above, fixed communications).

As described above, an antenna for transmitting and receiving satellite frequencies and a terminal main body for processing and controlling signals transmitted and received from the antenna are generally used for satellite communication. In addition, since the antenna and the main body are mostly composed of separate types, there is a disadvantage in that portability for satellite communication anywhere is difficult.

In the case of a portable satellite communication terminal overcoming the disadvantages of such portability, there is a problem that the direction of the antenna must be manually adjusted to match the antenna with the satellite of the corresponding position.

An object of the present invention is to solve the above problems, an object of the present invention is to provide a mobile terminal for satellite communication to perform the antenna pointing automatically by driving the motor in the antenna pointing method in consideration of the inclined state of the antenna pointing method was made manually. to be.

In addition, the present invention is designed to handle the communication of each module in the board in the terminal, and to design the communication interface of all the modules of the terminal in a concise manner, the mobile terminal for satellite communication improved the portability To provide is another purpose.

In order to achieve the above object, the present invention provides a portable terminal system for satellite communication,

An antenna unit including a main antenna, an auxiliary antenna, and a feed horn for transmitting and receiving a radio signal with a satellite;

An antenna driver for axial movement, vertical or horizontal movement of the antenna unit;

Transmitting and receiving unit for converting or amplifying and converting a radio signal transmitted and received to the antenna unit;

Peripheral board interface unit for controlling the input and output signals;

A sensor unit for sensing satellite reception and various operating states of the system;

A remote controller for wirelessly controlling the system remotely;

A modem unit for converting input / output signals;

An operation panel unit provided to operate the system or visually check the operation state;

An interface module unit for interfacing the signals transmitted and received from the transceiver unit, a peripheral board interface unit, a modem unit, and an IP router receiver; And

A power supply unit supplying driving power to various sensors and internal modules;

It is characterized by providing a digital portable terminal system for satellite communication including a.

Moreover, this invention is a portable terminal system for satellite communications.

It is designed to be handled by one peripheral board interface unit for communication between terminal PC, transceiver, motor driver, operation panel unit, IP modem, sensor unit, IP router receiver and interface module unit. The present invention provides a portable terminal system for satellite communication.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the mobile terminal for satellite communication according to the present invention in detail.

1 is a perspective view showing a portable terminal system for satellite communication as an embodiment according to the present invention.

First, the antenna system of the portable terminal system for satellite communication of the present invention may be roughly classified into an antenna unit 100 for transmitting and receiving a radio signal with a satellite, and an antenna driver 400 for axial movement, vertical or horizontal movement. . The configuration and operation of the antenna unit 100 and the antenna driver 400 are described with reference to FIGS. 1 to 9.

The antenna unit 100 includes a main antenna (Reflector) 110, a sub antenna (Sub reflector) 120, a feed horn (130) for transmitting and receiving a satellite signal, the main antenna 110 and And a plurality of booms 150, 155 and brackets 152, 153, 154, 156, 157 that fix and support the auxiliary antenna 120.

The main antenna 110 is a circular structure having a predetermined diameter and thickness is separated and combined into a plurality of components. That is, since the main antenna 110 is difficult to load and store due to its large diameter, the main antenna 110 can be disassembled and combined into a plurality of components, preferably four pieces. Disassembly and coupling is made by the fastening means provided on the back of the main antenna (110). The main antenna 110 is mounted to the boom 155 and the plurality of brackets 156 and 157 provided on the rear surface to be fixed and supported.

The auxiliary antenna 120 is mounted to the bracket 152 of the boom 150 and fixed and supported in a bowl-shaped structure having a predetermined diameter at a predetermined position facing the main antenna 110.

Such a structure for supporting and fixing the main antenna 110, the auxiliary antenna 120, and the feed horn 130 of the antenna unit 100 is an offset brake 158 (at both ends of the rotating shaft 151) in FIG. 8. 159 is provided, the main shaft boom 155 for supporting the main antenna 110, and the auxiliary antenna boom 150 for supporting the auxiliary antenna 120 is coupled to the rotating shaft 151. The main antenna boom 155 is provided with a plurality of brackets 156 and 157, and the auxiliary antenna boom 150 is provided with a bracket 152 for supporting the auxiliary antenna 120. Furthermore, the auxiliary antenna boom 150 is provided with a bracket 153 for fixing and supporting the feed horn 130 and its assembly, and a bracket for fixing and supporting the feed loss preventing means 137 of the feed horn 130. 154 is provided. The rotating shaft 151 to which the booms 150 and 155 are coupled is penetrated and fixed in the cover 163 mounted on the turntable 161.

As the antenna driver 400 responsible for the axis, vertical or horizontal movement of the antenna according to the present invention, the structure of the shaft drive unit 140 for driving the shaft of the feed horn 130 is a feed in Figures 3 and 4, A motor 144 that rotates the horn 130 to move in the front and rear directions, a brake 141 that limits the rotational force of the motor 144, and an encoder 143 that detects the rotational state of the motor shaft are combined. . In addition, a timing pulley 142 is configured on the shaft of the motor 144, and is connected to the timing pulley 131 and the timing belt 138 that are formed at the outer circumference of the feed horn 130.

On the outer circumference of the feed horn 130 with the timing pulley 131 is configured a horn support means 132 for supporting the rotation of the feed horn 130, the horn support means 132 is fixed by the feed horn 130 Support the center of rotation when rotated or reversed. The inside of the horn support means 132 is provided with a plurality of shafts 134 coupled to both ends of the bush 135, the shaft 134 is provided with a roller 133 in contact with the outer circumference of the feed horn 130 It is. The roller 133 provided in the horn support means 132 is preferably applied to a three-point rotation support method.

The cable 139 connected to the end of the feed horn 130 is connected into the system through the feed loss prevention means 137 to prevent the feed loss. And the end of the feed horn 130 is provided with a waveguide 136 having a vertical and horizontal polarity for transmission and reception.

The driving range of the feed horn 130 is about -10 ㅀ ~ 100 ㅀ, the resolution is about 0.05 ㅀ, the repeatability is about 0.2 ㅀ, the driving speed is about 1 second, and the feed horn ( As the driving source of the 130, the motor 144 is applied a two-phase stepping motor. The driving of the motor 144 is transmitted to the timing belt 138, the reduction ratio with the timing pulleys 131 and 142 is about 1: 4, and the position recognition of the feed horn 130 is based on the rotary encoder 143. Is applied. Moreover, the application of timing pulleys and belts reduces backlash and the use of hard stoppers prevents the risk of collision.

The structure for driving the antenna in the azimuth position is shown in FIGS. 5 to 7, where the main antenna 110, the auxiliary antenna 120, and the feed horn 130 are fixed and supported by the boom 150 and 155. It is a structure to rotate from side to side in a horizontal state. In this structure, the base plate 164 is provided with a motor 165 for rotating the turntable 161 to the left and right, and a brake 174 for limiting the rotation of the motor 165. In addition, an encoder 167 which detects a rotation state of the turntable 161 is mounted to the base plate 164. The turntable 161 and the base plate 164 are connected to a harmonic drive 166 for precise motion control. The motor 165, the harmonic drive 166, and the encoder 167 are connected to timing pulleys 168, 170, and 173 by timing belts 169 and 172, respectively.

The driving range of the antenna in the horizontal direction is about 0 ㅀ ~ 270 ㅀ, the resolution is about 0.01 ㅀ, the repeatability is about 0.1 ㅀ, the driving speed is about 4 seconds, and the antenna is in the horizontal direction. The motor 165 is a two-phase stepping motor as a driving source for driving with. In addition, the driving of the motor 165 is transmitted to the timing belt 172, and the reduction ratio with the timing pulleys 170 and 173 is approximately 1:80, and the horizontal position recognition is applied with the rotary encoder 167. . In addition, by using the reduction gear of the harmonic drive 166 directly, it is possible to drive precisely, and the motor 165 is mounted on the base plate 164 to fully utilize the internal space of the lower case 220.

8 and 9, the main antenna 110, the auxiliary antenna 120, and the feed horn 130 are fixed to and supported by the boom 150 and 155. Is a structure for raising and lowering in a vertical state. In this structure, the cover 163 is mounted on the disk-shaped turntable 161, and the cover 163 is installed through the rotating shaft 151 having the offset brakes 158 and 159 disposed at both ends thereof, and the rotating shaft 151. ) Is configured with a timing pulley 186.

In addition, a motor 181 for rotating the rotating shaft 151 and a brake 182 for limiting the rotation of the motor 181 are coupled to the cover 163. In addition, an encoder 187 for detecting a rotation state of the motor 181 is mounted to the cover 163. The timing pulley 186 fixed to the rotating shaft 151 and the timing pulley 183 connected to the motor 181 axis are connected to the timing belt 185 and the second timing pulley 184 connected to the motor 181 axis. ) Is connected to a timing pulley 188 and a timing belt 189 provided in the encoder 187.

The driving range of the antenna in the vertical direction is about 0 ㅀ ~ 75 ㅀ, the resolution is about 0.01 ㅀ, the repeatability is about 0.1 ㅀ, the driving speed is about 1.2 seconds, and the antenna is in the vertical direction. The motor 181 is applied to a two-phase stepping motor as a driving source for driving with. The driving of the motor 181 is transmitted to the timing belt 185, the reduction ratio with the timing pulley 183 is about 1:80, and the position recognition in the vertical direction is based on the rotary encoder 187.

Furthermore, a compact design is possible by mounting the drive structure in the vertical direction for raising and lowering the antenna in the cover 163, and the maintenance due to the modularization is easy. In addition, the urethane stopper is applied to prevent damage to the antenna support bracket, and the lightweight design is applied to the simple design of the boom.

In addition, according to the present invention, in the block diagram of Figure 10, the transceiver 300 for amplifying or converting the radio signal transmitted and received by the antenna unit 100 amplifies or converts the radio signal transmitted and received from the antenna unit 100 The up-converter 320 converts a 950-1,450 MHz IF (intermediate frequency) signal input from the modem unit 1000 via the interface module unit 700 into a signal of 14-14.5 GHz. The frequency is up-converted and output.

The solid state power amplifier (SSPA) 330 amplifies the RF signal of the 14 to 14.5GHz Ku band applied by the up-converter 320 to a high power of 20W. 100).

In addition, the low-converter (Low Noise Block Down-Converter, LNB) 310 receives a weak signal of 12.25-12.75 GHz transmitted from the satellite through the antenna unit 100, and then amplifies low noise to obtain 950-1,450 MHz. The frequency is down-converted to the IF signal and output to the interface module 700.

In the block diagram of FIG. 11, the peripheral board interface unit 600 for controlling the input / output signal includes a bridge MCU 610, a universal asynchronous receiver transmitter (UART) 620, a signal processor 630, and the like. An A / D converter 640 is included.

Furthermore, the peripheral board interface unit 600 is wirelessly connected to the Ethernet interface 812 and 813 between the bridge MCU 610 and the terminal PC 810, and the modem interface with the IP modem 1100 and the motor driver 400, respectively. 1110 and the motor drive interface 1102 are connected to the RS232C, and the UART 620 is connected to the sensor unit 900 and the operation panel unit 200. The rotation signal of the motor driver 400 is input to the signal processor 630 through each encoder 143, 167, 187, and the signal processor 630 is an electric field strength meter through the A / D converter 640. (Strength Meter) 930 is connected.

As a remote control unit 800 for remote control wirelessly, a modem interface for converting a modem control console (RS232C) into a network protocol and connecting to a terminal for remote control of a mobile terminal system is configured, and the motor is controlled through RS232C. As in the case of modem control, it is connected to a motor drive interface connecting to a terminal through a TCP / IP connection, and controls the display window 201 of the operation panel 200 or inputs signals of the joystick 203 and the keypad 202. MMI (Man Machine Interface) is included so that the user can directly control the device or check the internal state even if the user does not have the portable terminal system. Furthermore, the remote controller 800 may include a hub 830 for amplifying network signals and distributing IP, a wireless AP 820 serving as a hub in a wireless network, and a portable computer for remotely controlling a mobile terminal system. 810 (which includes the GPS 811).

In addition, as a sensor unit 900 for sensing various operating conditions of the satellite reception and system, the GPS (GPS) 811 is a signal received from a plurality of satellites 850, the time, latitude and longitude of the current position, and Providing three-dimensional speed information, it is mounted on the terminal PC 810 of the remote control unit 800.

The clinometer 910 provides a reference value when the antenna is deployed, and measures the inclination of the portable terminal system, and the fluxgate compass 920 is a magnet of the earth. The azimuth angle is output by detecting 磁 氣).

In addition, the strength meter 930 is a device for converting a received RF signal into a DC voltage, which is used to find an accurate position when the DC voltage changes according to the strength of the RF signal and when positioning the antenna, and a limit switch. The limit switch 940 is for returning to the initial deployment state of the antenna without departing from the predetermined Azimuth and Elevation angles of the antenna. In addition, a temperature sensor 950 for detecting an internal temperature of the portable terminal system is included.

The modem unit 1000 converts a user's IP signal into a satellite protocol and an RF signal, converts an RF signal of a counterpart station into an IP signal, and converts a user's video and audio signal into an IP signal. And an MPEG encoder 1130 for inputting the converted IP signal to the IP modem 1100.

The operation panel unit 200 is provided with a display window 201 for visually displaying the operation state of the various sensors and the internal module operation state, the display window 201 is selectively applied to the VFD (Vacuum Fluorescent Display) or LCD do. In addition, there is a keypad 202 having a plurality of switches for mode, selection, and clear of a menu displayed on the display window 201. The keypad 202 has three switches, the mode used to display several items, the select used to select an item displayed in the mode, and the clear to the selected item again. Use it when you come out.

In addition, the display panel 200 includes a joystick 203 used to search the directory of the menu displayed on the display window 201 up, down, left, and right, or to drive the antenna horizontally or vertically.

The power supply unit 500 for driving the portable terminal system of the present invention is provided with a power supply 510 for supplying driving power of an internal module and each sensor and charging an external battery. When this is cut off, the internal battery 520 used as an auxiliary power source is mounted. In addition, an external battery 530 used in place of power applied from the outside is included.

According to the present invention, the configuration and function of each sensor and peripheral board interface (PBI) of the portable terminal system in FIG. 12 can be described as follows.

In the figure, the signals of each sensor are stored in the memory of the PBI sensor signal processor 630, where the field strength meter 930 is an index to find the correct satellite position. Therefore, in order to find a more precise satellite position, the signal of the strength meter 930 and the horizontal driver 160 and the vertical driver 180 of the antenna unit 100 are simultaneously acquired to obtain the satellite signal according to the position of the terminal PC 810. Strength and weakness are saved. Terminal PC 810 analyzes this stored value to read a more precise satellite position.

The interface between the terminal PC 810 and the peripheral board interface unit (PBI) 600 and related devices is via TCP / IP. The terminal uses the virtual serial port driver to minimize the dependency on terminal software as if it were connecting to a local serial port.

In the portable terminal system for satellite communication according to the present invention, in order to automatically position the antenna of the system and to communicate with the satellite wirelessly, the portable terminal system is positioned in a open area that can communicate with the satellite 850 and the antenna unit 100. Align the main antenna 110, the auxiliary antenna 120 and the feed horn 130 of the.

That is, the Azimuth reference position is set as the horizontal direction of the antenna by using the geomagnetic signal of the Fluxgate Compass 920 mounted in the portable terminal system. Then, an arbitrary area centered on the estimated position of the satellite is calculated from a plurality of data calculated in advance or by a given path calculation method. In addition, the reflector of the main antenna 110 is rotated to the expected position of the target satellite.

The reflector of the main antenna 110 moves at high speed from the current position to the outer boundary of the calculated area. At this time, in order to track the point of azimuth and elevation represented by a spiral curve on a plane in which the azimuth of the antenna is in the X axis and the elevation is in the Y axis, each motor driver is selected. To control. The motor driver drives the antenna horizontal driver 160 in the horizontal direction and the antenna vertical driver 180 in the vertical direction, respectively.

Set the position of the antenna in the horizontal direction. For this purpose, if the magnetic azimuth of the earth is detected from the flux sensor 920 and output the azimuth angle, the azimuth of the antenna using the geomagnetic signal. Set the reference position. At this time, in order to set the azimuth angle of the antenna, the motor 165 of the horizontal drive unit 160 is rotated forward and reverse. The timing belt 172 is fastened between the timing pulley 173 configured on the rotation shaft of the motor 165 and the timing pulley 170 configured on the harmonic drive 166 of the turntable 161 and the motor ( The harmonic drive 166 is rotated by the rotational force of 165. The harmonic drive 166 and the encoder 167 are connected to the timing belt 169 to detect the rotation speed of the harmonic drive 166. As the harmonic drive 166 rotates according to the azimuth angle detected by the geomagnetic sensor 920 as described above, rotation is performed up to the set azimuth angle. The encoder 167 detects the rotation of the harmonic drive 166 to the set azimuth angle, and operates the brake 174 when the azimuth angle of the antenna with respect to the horizontal direction is set according to the detected value of the encoder 167 to operate the motor 165. The rotation of the turntable 161 is stopped by restricting the driving of the turntable 161. That is, the harmonic drive 166 is rotated through the timing belt 172 by the rotation of the motor 165, the encoder 167 detects the rotation of the harmonic drive 166, and determines the detected value of the encoder 167. The brake 174 is operated to set an azimuth angle with respect to the horizontal direction of the antenna.

At the same time as setting the azimuth angle with respect to the horizontal direction of the antenna, the vertical driving unit 180 is driven to elevate the vertical direction of the antenna. The vertical drive unit 180 to which the plurality of booms 150 and 155 are connected is configured in the cover 163 located at the upper end of the turntable 161, and offset brakes are provided at both ends of the rotation shaft 151 of the vertical drive unit 180. 158 and 159 are provided, and the timing pulley 186 mounted on the rotation shaft 151 is connected to the timing pulley 183 and the timing belt 185 provided on the motor 181 shaft. The timing pulley 184 is connected between the timing pulley 184 and the encoder 187 provided on the shaft of the motor 181. As described above, in order to raise and lower the booms 150 and 155 of the vertical driving unit 180, the rotational force of the motor 181 rotates the rotation shaft 151 via the timing pulley 183 and the timing belt 185, and the rotation shaft ( The booms 150 and 155 are raised and lowered forward and rearward by the rotation of the 151.

As described above, while the antenna unit 100 moves, the strength of the satellite signal according to the position of the antenna is stored at regular time intervals using the PBI synchronous satellite signal sampling hardware. In addition, by analyzing the data indicating the position of the antenna and the strength of the satellite signal to find the strongest point of the satellite signal.

In the case where each operating unit of the antenna unit 100 can be rotated at high speed, the satellite signal search time is relatively short. Otherwise, the search step is divided into image search and fine search. The overall search time can be reduced.

As described above, the portable terminal system for satellite communication according to the present invention automatically drives the antenna by driving the motor by a method of pointing the antenna in consideration of the inclined state of the portable terminal system by driving the antenna unit by the axis driver, the horizontal driver and the vertical driver. The antenna pointing is possible, and the communication of each module is designed to be processed in one board, so that the communication interface of all modules of the terminal can be simply processed, thereby improving portability.

1 is a perspective view of a portable terminal system for satellite communication according to an embodiment of the present invention.

2 is a perspective view showing an operation panel unit of the portable terminal system for satellite communication according to the present invention.

3 is a perspective view illustrating an axis driving unit for driving a feed horn as an antenna driving apparatus according to the present invention.

4 is a plan view of the shaft driver of FIG. 3.

5 is a perspective view illustrating a horizontal driving unit for driving an antenna in a horizontal direction as an antenna driving apparatus according to the present invention.

6 is an antenna driving apparatus according to the present invention, which is an operation diagram showing the operating state of the horizontal driving unit from the side.

7 is an antenna driving apparatus according to the present invention, which is an operation diagram showing the operating state of the horizontal drive unit in a plane.

8 is a perspective view illustrating a vertical driving unit for driving an antenna in a vertical direction as an antenna driving apparatus according to the present invention.

9 is an antenna driving apparatus according to the present invention, the operation diagram showing the operating state of the horizontal drive.

10 is a block diagram illustrating a portable terminal system for satellite communication according to the present invention.

11 is a block diagram of a peripheral device board interface unit for controlling the satellite communication portable terminal system according to the present invention.

12 is a configuration diagram relating to the operation of the peripheral board interface unit and the sensor unit according to the present invention.

13 is a block diagram of auto positioning of the antenna driving apparatus according to the present invention.

♣ Explanation of symbols for main part of drawing ♣

100: antenna unit 110: main antenna

120: auxiliary antenna 130: feed horn

140: shaft drive unit 160: horizontal drive unit

180: vertical drive unit 200: operation panel unit

300: transceiver 310: down-converter

320: up-converter 330: power amplifier

400: antenna driving unit 500: power supply

510: power supply 520: internal battery

530: external battery 600: peripheral board interface

700: interface module unit 800: remote control unit

810: Terminal PC 811: GPS

820: wireless AP 830: switching hub

900: sensor unit 910: clinometer

920 geomagnetic sensor 930 field strength meter

940: limit switch 950: temperature sensor

1000: modem 1100: IP modem

1120: IP Router Receiver 1130: MPEG Encoder

Claims (14)

In the portable terminal system for satellite communication, An antenna unit for transmitting and receiving a satellite and a radio signal; An antenna driver for satellite tracking of the antenna unit; Transmitting and receiving unit for converting or amplifying and converting a radio signal transmitted and received to the antenna unit; Peripheral board interface unit for controlling the input and output signals; A sensor unit for sensing satellite reception and various operating states of the system; A remote controller for wirelessly controlling the system remotely; A modem unit for converting input / output signals; An operation panel unit provided to operate the system or visually check the operation state; An interface module unit for interfacing the signals transmitted and received from the transceiver unit, a peripheral board interface unit, a modem unit, and an IP router receiver; And A power supply unit supplying driving power to various sensors and internal modules; Portable terminal system for satellite communication, characterized in that consisting of. The method of claim 1, wherein the antenna driver An azimuth position for rotating the antenna in a horizontal direction; A vertical driving unit for rotating the antenna in a vertical direction, and And a shaft drive unit for rotating the feed horn. The method of claim 2, wherein the horizontal drive unit A disk-shaped turntable, A base plate provided at the bottom of the turntable; A motor mounted to a lower end of the base plate to generate rotational force; A brake coupled to the motor shaft to control the rotational force of the motor; A harmonic drive connected to the motor and a timing belt to rotate a turntable; And an encoder connected to the harmonic drive and a timing belt to sense a rotation state. The method of claim 2, wherein the vertical drive unit A cover installed at the top of the turntable, A rotating shaft penetrating the cover and having a timing pulley mounted on the shaft; A plurality of booms coupled to the rotation shaft to support the main antenna, the auxiliary antenna, and the feed horn with brackets; Offset brakes provided on both ends of the rotary shaft to control the deployment and folding of the boom, A motor mounted inside the cover to generate power for rotating the rotating shaft through a timing belt; A brake coupled to the motor shaft to control the rotational force of the motor, and And an encoder connected to the motor shaft and a timing belt to sense a rotation state. According to claim 2, wherein the shaft drive unit A motor for generating power for rotating the feed horn through a timing belt; A brake coupled to the motor shaft to control the rotational force of the motor; An encoder connected to the motor shaft to sense a rotation state; Horn support means for supporting the rotation state of the feed horn, and And a feed loss preventing means for preventing feed loss by rotation of the feed horn. The method of claim 1, wherein the transceiver unit An up-converter for frequency up-converting the 950-1,450 MHz IF (intermediate frequency) signal input from the modem unit into a 14-14.5 GHz signal; A power amplifier (SSPA (Solid State Power Amplifier)) for amplifying the Ku-band RF signal of 14 to 14.5GHz applied by the up-converter to high power (20W), and Low Noise Block Down-Converter (LNB) for low noise amplification of 12.25-12.75 GHz weak signals transmitted from satellites and frequency down-conversion to IF signals of 950-1,450 MHz. Portable terminal system for satellite communication. According to claim 1, wherein the peripheral board interface unit A modem interface for converting a modem control console (RS232C) into a network protocol and connecting it to a terminal; The motor is controlled via RS232C and includes a motor drive interface connected to the terminal via a TCP / IP connection as in the case of modem control. The method of claim 1, wherein the remote control A hub for amplifying network signals and distributing IP, A wireless AP serving as a hub in a wireless network, A portable terminal system for satellite communication, comprising a portable computer for remotely controlling a portable terminal system wirelessly. The method of claim 1, wherein the modem unit An IP modem which converts the user's IP signal into a satellite protocol and an RF signal, and converts the RF signal of the other station into an IP signal; And a MPEG encoder for converting a video and audio signal of a user into an IP signal and inputting the converted IP signal to an IP modem. The method of claim 1, wherein the operation panel unit A display window for visually displaying the operation state of the various sensors and the internal module operation state, A keypad including a plurality of switches for mode, selection, and clear of a menu displayed on the display window; And a joystick used for moving the directory of the menu displayed on the display window up, down, left, or right to search or driving the antenna horizontally or vertically. The portable terminal system of claim 10, wherein the mode is used to display various items, a selection is used to select an item displayed in the mode, and a clear is used to return from the selected item. ., The method of claim 1, wherein the power supply unit A power supply for supplying driving power to the internal module and each sensor and charging an external battery; Internal battery used as auxiliary power when the power applied from the outside is cut off while the system is running, and Portable terminal system for a satellite communication comprising an external battery used in place of a power applied from the outside. The method according to any one of claims 1 to 12, wherein the sensor unit GPS, which provides time, latitude and longitude, and three-dimensional velocity information of the current location as a signal received from the satellite, A clinometer for providing a reference value when the antenna is deployed and for measuring the degree of inclination of the portable terminal system; A geomagnetic sensor that detects the earth's magnetism and outputs an azimuth angle, A device that converts a received RF signal into a DC voltage, which is a strength meter used to find the exact position when the DC voltage changes according to the strength of the RF signal and when positioning the antenna, A limit switch for returning to the initial deployment state of the antenna without departing from the fixed Azimuth and Elevation angles of the antenna, and A portable terminal system for satellite communication, comprising a temperature sensor for sensing the internal temperature of the portable terminal system. In the portable terminal system for satellite communication, It is designed to be handled by one peripheral board interface unit for communication between terminal PC, transceiver, motor driver, operation panel unit, IP modem, sensor unit, IP router receiver and interface module unit. A portable terminal system for satellite communication, characterized in that.