KR101149120B1 - Antenna Control unit having satellite search function and method for searching satellite using therefor - Google Patents

Abstract

An antenna control apparatus having a satellite search function capable of accurate satellite orientation even in the absence of expertise in satellite communication and a satellite search method using the same are presented. An antenna control apparatus having a satellite search function includes an input unit for receiving target satellite information; An operation unit for calculating a steering angle based on the target satellite information input to the input unit and the position information of the satellite antenna; And a control unit for controlling the satellite antenna to move to the target satellite position by setting the steering angle of the satellite having the maximum received signal strength among the searched satellites to the target satellite position within the error range of the steering angle calculated by the calculating unit .

Description

[0001] The present invention relates to an antenna control apparatus having a satellite search function and a satellite search method using the same,

The present invention relates to an antenna control apparatus having a satellite search function and a satellite search method using the same, and more particularly, to an antenna control apparatus having a satellite search function used in a mobile satellite communications earth station system and a satellite search method using the same .

BACKGROUND ART [0002] With the recent development of information and communication technology, wireless digital communication technology used for personal portable terminals (e.g., PDA, mobile phone, etc.) and wireless LAN has developed remarkably. .

Satellite communications using wireless digital communication technology use satellites as repeaters. Conventional satellite communication has been used only in fields such as international telephone and television relay. The satellite communication is capable of high-speed large-capacity communication, is capable of communication over a wide range, has no difference in communication performance according to the terrain, and is not restricted in the event of a disaster. Accordingly, researches for applying satellite communication in various fields such as data communication, remote data collection, computer communication, and distribution of video programs such as general cable broadcasting (CATV) have been actively conducted.

However, since the communication satellite used for satellite communication is located on the 38,500 km (km) above the equator to transmit a satellite signal, if a high directivity toward the satellite of the satellite antenna is required and the directivity is slightly lowered The reception ratio of the signal is remarkably lowered. Therefore, in the satellite communication, it is an important problem to match the signal receiving direction of the satellite antenna and the maximum point of the satellite signal (that is, to secure the directivity of the satellite antenna).

Generally, a method of adjusting the directivity angle of the antenna so that the person directs the antenna and directs it toward the satellite to be actually used by using an expensive measuring instrument is used. Such a conventional satellite search method requires expert knowledge to adjust the orientation angle of the antenna, and thus there is a problem that a general user has difficulty in constructing and using a satellite communication system.

The present invention has been made in view of the problems of the prior art, and it is an object of the present invention to provide an antenna control apparatus having a satellite search function capable of accurate satellite orientation even in the absence of expertise in satellite communication and a satellite search method using the same have.

According to an aspect of the present invention, there is provided an antenna control apparatus having a satellite search function, including: an input unit receiving target satellite information; An operation unit for calculating a steering angle based on the target satellite information input to the input unit and the position information of the satellite antenna; And a control unit for controlling the satellite antenna to move to the target satellite position by setting the steering angle of the satellite having the maximum received signal strength among the searched satellites to the target satellite position within the error range of the steering angle calculated by the calculating unit .

And a transmission and reception unit for transmitting and receiving data to and from the GPS satellite and the azimuth sensor, and the computing unit computes the position information of the satellite antenna based on the data received from the GPS satellite and the azimuth sensor.

The arithmetic unit calculates a steering angle including an azimuth angle and an elevation angle.

The control unit fixes the satellite antenna to the elevation angle calculated by the arithmetic unit, moves the satellite antenna within an error range of the azimuth calculated by the arithmetic unit, and controls the intensity of the received satellite signal to be measured.

The controller fixes the satellite antenna at an azimuth angle at which the satellite signal having the strongest intensity is received, moves the satellite antenna within an error range of the elevation angle calculated by the arithmetic unit, and measures the intensity of the satellite signal received.

A measuring unit measuring the intensity of the satellite signal under the control of the control unit; And a storage unit for storing the intensity of the satellite signal measured by the measuring unit in association with the azimuth or elevation angle of the measured position.

The input unit receives target satellite information including the hardness of the target satellite.

And a motor unit for driving the satellite antenna according to the control of the control unit, wherein the motor unit includes a distribution circuit and a coefficient circuit.

According to an aspect of the present invention, there is provided a satellite search method using an antenna control apparatus having a satellite search function, the method including: inputting target satellite information by an input unit; An arithmetic operation step of calculating a steering angle based on the target satellite information input in the input step and the position information of the satellite antenna by the arithmetic unit; A searching step of searching, by the control unit, satellites within an error range of the steering angle calculated in the calculating step; And a setting step of setting a direction angle of a satellite having a maximum received signal strength among satellites searched in the searching step to a target satellite position by the control unit.

And a receiving step of receiving data from the GPS satellite and the azimuth sensor by the transmitting and receiving unit. In the calculating step, the calculating unit calculates the position information of the satellite antenna based on the data received in the receiving step.

In the calculation step, the calculation unit calculates a direction angle including an azimuth angle and an elevation angle.

In the searching step, the control unit fixes the satellite antenna to the elevation angle calculated in the calculation step, and moves the satellite antenna within the error range of the azimuth calculated in the calculation step and searches for the satellite.

In the searching step, the control unit fixes the satellite antenna at the azimuth angle at which the satellite signal having the strongest intensity is received in the first searching step, moves the satellite antenna within the error range of the elevation angle calculated in the calculating step, 2 search step.

And a measuring step of measuring the intensity of the satellite signal received from the satellite retrieved in the retrieving step by the measuring unit.

And a storing step of storing the intensity of the satellite signal measured in the measuring step in association with the azimuth or elevation angle of the measured position by the storage unit.

In the input step, the input unit receives the target satellite information including the hardness of the target satellite.

The antenna control apparatus having the satellite search function and the satellite search method using the satellite search function according to the present invention provide an automatic satellite search function, so that accurate satellite orientation can be achieved without expert knowledge on satellite communication.

Incidentally, the antenna control apparatus having a satellite search function and the satellite search method using the same have an effect of facilitating the operation of the mobile satellite antenna system and precise satellite orientation by providing the automatic satellite search function.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings in order to facilitate a person skilled in the art to easily carry out the technical idea of the present invention. . In the drawings, the same reference numerals are used to designate the same or similar components throughout the drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. Embodiments of the present invention are provided to more fully describe the present invention to those skilled in the art. Accordingly, the shapes and sizes of the elements in the drawings and the like can be exaggerated for clarity.

First, terms used in the description of the antenna control apparatus having a satellite search function and the satellite search method using the same according to an embodiment of the present invention are defined as follows.

The steering angle is the position information of the antenna for receiving satellite signals from the target satellite antenna. That is, the directivity angle is information indicating the degree to which the satellite antenna must move in order to receive the satellite signal. At this time, the directivity angle includes azimuth angle and elevation angle.

The formulas commonly used in the field of satellite communication to calculate the steering angle of the target satellite are shown in Equations 1 and 2 below.

φ: earth station latitude

Δλ: difference in hardness from system hardness to satellite

For the implementation of the automatic search function, the orientation information of the antenna's opening face should be added in the above formula. At this time, the azimuth information affects only the azimuth angle. At this time, the reference point of the antenna opening face is 0 degrees in the north, 90 degrees in the east, 180 degrees in the south, and 270 degrees in the west. Assuming that this value is AZs, the azimuth can be defined again by Equation 3 below.

Hereinafter, an antenna control device having a satellite search function according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. 1 is a block diagram for explaining an antenna control apparatus having a satellite search function according to an embodiment of the present invention. 2 and 3 are views for explaining the control unit of FIG. 1, FIG. 4 is a view for explaining the motor unit of FIG. 1, and FIG. 5 is a block diagram of an antenna control apparatus having a satellite search function according to an embodiment of the present invention. And is a block diagram for explaining another configuration.

1, an antenna control apparatus 100 having a satellite search function includes an input unit 110, a transmission / reception unit 120, an operation unit 130, a control unit 140, a measurement unit 150, a storage unit 160, and a motor unit 170.

The input unit 110 receives target satellite information. That is, the input unit 110 receives the target satellite information including the hardness of the target satellite of the user.

The transceiver unit 120 transmits and receives data to and from the GPS satellite 320 and the azimuth sensor 351. That is, the transceiver unit 120 receives the GPS information including the current position information of the satellite antenna 350 from the GPS satellite 320. The transmission / reception unit 120 receives the direction information that the satellite antenna 350 is heading from the azimuth sensor 351.

The calculating unit 130 calculates a steering angle based on the target satellite information input to the input unit 110 and the position information of the satellite antenna 350. To this end, the calculation unit 130 calculates the position information of the satellite antenna 350 based on the data (that is, the GPS information and the direction information) received from the GPS satellite 320 and the orientation sensor 351 via the transmission / reception unit 120 . At this time, the calculation unit 130 calculates a steering angle including an azimuth angle and an elevation angle. That is, the calculation unit 130 calculates the directivity angle including the azimuth angle and the elevation angle by substituting the input target satellite information (i.e., the hardness of the satellite) and the current position information of the antenna into Equations 1 and 3 described above.

The control unit 140 searches for satellites within the error range of the directional angle calculated by the calculation unit 130 and sets the satellite angle of the satellite having the maximum received signal strength among the searched satellites to the target satellite position, To the target satellite position. That is, the control unit 140 generates a control signal for moving the satellite antenna 350 to a position corresponding to the steering angle (i.e., azimuth angle, elevation angle) calculated by the calculation unit 130. The antenna driving apparatus 300 receives the motor driving signal from the motor unit 170 and transmits the motor driving signal to the satellite antenna 350 using the motor and the tilt sensor 354. [ To the calculated steering angle in the calculation unit 130. [

The control unit 140 fixes the satellite antenna 350 to the elevation angle calculated by the calculation unit 130 and moves the satellite antenna 350 within the error range of the azimuth calculated by the calculation unit 130, . That is, the control unit 140 fixes the elevation angle of the satellite antenna 350 to the elevation angle calculated by the calculation unit 130. [ The control unit 140 slowly moves within an error range of the azimuth calculated by the operation unit 130 (approximately ± 15) and searches for the existence of satellites. Here, the error range of the azimuth angle is set differently according to the accuracy of the azimuth sensor. Usually, the target satellite exists within an error range of about ± 15 °. At this time, the controller 140 determines whether or not there is a satellite based on the strength of the satellite signal measured by the measuring unit 150 during the azimuth search. That is, the controller 140 determines that there is a satellite in a portion where the intensity of the satellite signal measured by the measuring unit 150 increases, that is, the maximum interval (see FIG. 2). At this time, if the controller 140 determines that there is a satellite, the controller 140 controls the storage unit 160 to store the azimuth and the intensity of the satellite signal.

The control unit 140 controls the satellite antenna 350 to measure the intensity of the satellite signal received while moving the satellite antenna 350 within the error range of the elevation angle at the azimuth at which the satellite is searched. That is, the controller 140 fixes the azimuth angle of the satellite antenna 350 to the azimuth angle of the satellite. The control unit 140 moves slowly within an error range (about ± 2 degrees) of the elevation angle calculated by the operation unit 130 and searches for the presence of a satellite. That is, the control unit 140 determines a portion where the intensity of the satellite signal measured by the measuring unit 150 increases as the satellite antenna 350 moves within the error range of the elevation angle, It is determined that the satellite exists. Here, the error range of the elevation angle is set differently according to the accuracy of the tilt sensor 354. At this time, if the controller 140 determines that there is a satellite, the controller 140 controls the storage unit 160 to store the azimuth and the intensity of the satellite signal.

The control unit 140 sets the satellite having the minimum difference between the elevation angle of the satellite detected during the elevation angle search and the elevation angle calculated by the calculation unit 130 as the target satellite. This is because the orientation sensor 351 generally has a large error due to the influence of the surrounding environment and geomagnetism, so that the calculated azimuth angle is used as true orientation, while almost all of the tilt sensors 354 have a very small error range, Is a satellite aimed at an elevation angle.

The control unit 140 moves the satellite antenna 350 to the set target satellite position. That is, the control unit 140 generates a control signal for moving the satellite antenna 350 to the azimuth angle and the elevation angle of the satellite set as the target satellite. The antenna unit 300 generates a motor driving signal for driving the satellite antenna 350 and the antenna driving unit 300 drives the motor and the tilt sensor 354 in accordance with the motor driving signal from the motor unit 170 ) To move the antenna to a position corresponding to the azimuth and elevation angle of the target satellite.

The measuring unit 150 measures the intensity of the satellite signal received from the satellite under the control of the controller 140. That is, the measuring unit 150 measures the intensity of the satellite signal received by the satellite antenna 350 under the control of the controller 140.

The storage unit 160 stores the intensity of the satellite signal measured by the measuring unit 150. At this time, the storage unit 160 stores the satellite signal in association with the measured azimuth or elevation angle.

The motor unit 170 generates a motor driving signal to the antenna driving device 300 in order to drive the satellite antenna 350 under the control of the controller 140. 4, the motor unit 170 distributes a pulse (motor drive signal) output from the motor encoder, unlike the configuration used in a general motor system (i.e., Fig. 4A) The backlash (the state in which the motor is rotated beyond the control value), which is the original purpose of the encoder, is compensated for by using the distribution circuit and the counting circuit 270 (see Fig. 4B) To the control unit 140 so that the data can be used as data for automatic search.

The antenna control apparatus 100 having a satellite search function includes an input unit 110, a transmitting and receiving unit 120, an operation unit 130, a control unit 140, a measurement unit 150, Unit 160, but the present invention is not limited thereto, and may be a configuration (e.g., Fig. 5) for performing the same function. That is, the input unit 110 includes a keypad interface 205 and receives target satellite information through operation of the keypad 310 of the user. The transceiver unit 120 is composed of a GPS interface 210 and an azimuth sensor interface 215 and transmits and receives data to and from the azimuth sensor 351 and the GPS satellite 320 (at this time, using the GPS receiver 330). The operation unit 130 and the control unit 140 are composed of a central processing unit 220 and perform the same functions as the operation unit 130 and the control unit 140 described above. The measurement unit 150 includes a signal strength measurement interface 225 and receives the intensity of the satellite signal received from the signal intensity measurer 340 through the satellite antenna 350. The storage unit 160 includes a ROM 230 and a RAM 235 and stores various information used for setting a target satellite. The antenna control apparatus 100 having the satellite search function includes a tilt sensor interface 240 for receiving the tilt of the satellite antenna 350 from the tilt sensor 354 of the satellite antenna 350 to control the satellite antenna 350, A display device interface 250 for outputting information related to the control of the satellite antenna 350 to the display device 370, a decoder (not shown) for data conversion A remote control device interface 260 for transmitting and receiving information to and from the remote control device 380 to remotely control the antenna control device 100 having a satellite search function, and an antenna control device 100 having a satellite search function A power supply circuit 265 for supplying power, a pulse distribution and counting circuit 270, and the like.

In this embodiment, each component of the antenna control apparatus 100 having the satellite search function is shown as operating in the antenna control apparatus 100 having the satellite search function, but the present invention is not limited thereto, It can be implemented to handle the function. In addition, although the functions of the respective parts are separated for convenience of explanation, they are not necessarily limited to the above-described separated states.

Hereinafter, a satellite search method using an antenna control apparatus having a satellite search function according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. 6 is a flowchart illustrating a satellite search method using an antenna control apparatus having a satellite search function according to an embodiment of the present invention. FIG. 7 is a flow chart for explaining the input step of FIG. 6, FIG. 8 is a flowchart for explaining the steering angle calculating step of FIG. 6, FIG. 9 is a flowchart for explaining the satellite searching step of FIG. 6 is a flowchart for explaining the target satellite setting step of FIG. 6, and FIG. 11 is a flowchart for explaining a step of driving the satellite antenna 350 of FIG.

The antenna control apparatus 100 having the satellite search function receives the target satellite information from the manager (or user) (S100).

More specifically, the manager (or user) sets a target satellite for communication and inputs the target satellite information to the input unit 110 (S120). At this time, the input unit 110 receives target satellite information including the hardness of the target satellite from the manager (or user).

The transceiver unit 120 receives data from the GPS satellite 320 and the azimuth sensor 351 (S140). At this time, the transceiver unit 120 receives the latitude and longitude information, which is the current position of the satellite antenna 350, from the GPS satellite 320 through the GPS receiver 330. The transceiver unit 120 receives direction information including a direction in which the satellite antenna 350 is heading from the azimuth sensor 351. [

The antenna control apparatus 100 having the satellite search function calculates a steering angle based on the input target satellite information and the position information of the satellite antenna 350 (S200).

The calculating unit 130 calculates the target satellite information and the satellite antenna 350 based on the position information input from the target satellite information input step S100 and the position information of the satellite antenna 350 Information is used to calculate the directivity angle of the satellite antenna 350 (S220). At this time, the calculation unit 130 calculates a steering angle including an azimuth angle and an elevation angle. Here, the operation unit 130 calculates the position information (i.e., latitude, longitude, direction information) of the satellite antenna 350 using the data received in step S140, and calculates the directivity angle .

The control unit 140 drives (moves) the satellite antenna 350 at the steering angle calculated by the calculation unit 130 (S240). That is, the control unit 140 generates a control signal for driving the satellite antenna 350 at the calculated azimuth angle and elevation angle. The antenna unit 300 generates a motor driving signal for driving the satellite antenna 350 and the antenna driving unit 300 drives the motor and the tilt sensor 354 in accordance with the motor driving signal from the motor unit 170 ) To move the antenna to a position corresponding to the calculated azimuth and elevation angle.

The antenna control apparatus 100 having the satellite search function searches for satellites within the calculated error range of the directional angle (S300).

The satellite searching step S300 will be described in more detail. The controller 140 fixes the satellite antenna 350 to the calculated elevation angle (S310). That is, the control unit 140 generates a control signal for fixing the satellite antenna 350 to the calculated elevation angle. The antenna unit 300 generates a motor driving signal for driving the satellite antenna 350 and the antenna driving unit 300 drives the motor and the tilt sensor 354 in accordance with the motor driving signal from the motor unit 170 ) To move the antenna to a position corresponding to the calculated elevation angle.

The controller 140 searches for satellites by slowly moving the satellite antenna 350 within the error range of the calculated azimuth angle (S320). At this time, the controller 140 searches for satellites by moving the satellite antenna 350 within an error range of about -15 ° to + 15 °. At this time, when the satellite signal is received, the control unit 140 processes the satellite as a search.

If the satellite is searched (S330; YES), the controller 140 controls to store the azimuth and the intensity of the received satellite signal (S340). That is, when the satellite signal is received through the satellite antenna 350, the controller 140 generates a control signal for controlling the azimuth angle and the strength of the received satellite signal. Accordingly, the measuring unit 150 measures the intensity of the satellite signal received by the satellite antenna 350, and the storage unit 160 measures the azimuth angle of the received satellite signal and the intensity of the satellite signal measured by the measuring unit 150 In association with each other.

When the azimuth search is completed within the error range (S350: YES), the controller 140 fixes the satellite antenna 350 at the azimuth angle at which the satellite searches for the satellite (S360). That is, the control unit 140 detects the azimuth angle stored in the storage unit 160. The control unit 140 generates a control signal for fixing the satellite antenna 350 at the azimuth angle at which the satellite antenna 350 is detected. The motor unit 170 generates a motor driving signal for driving the satellite antenna 350 and the antenna driving apparatus 300 drives the satellite antenna 350 in accordance with the motor driving signal from the motor unit 170 And moves to a position corresponding to the detected azimuth angle.

The controller 140 moves the satellite antenna 350 slowly within an error range of the elevation angle (S370). At this time, the control unit 140 controls the intensity of the received satellite signal to be measured when the satellite antenna 350 is moved within an error range of approximately -2 to +2 degrees. Accordingly, the measuring unit 150 measures the intensity of the satellite signal received from the satellite.

The controller 140 searches for and stores the elevation angle having the maximum received signal (S380). That is, the control unit 140 detects the elevation angle having the maximum intensity by comparing the intensity of the satellite signal measured by the measuring unit 150 as the elevation angle of the satellite antenna 350 changes, In association with the intensity of the light.

At this time, if the search is not completed (S390; NO), the controller 140 repeats the above-described steps S360 to S380 to detect an elevation angle having a maximum received signal at each azimuth angle.

The antenna control apparatus 100 having the satellite search function sets the direction angle of the satellite having the maximum received call intensity among the searched satellites to the target satellite position (S400).

More specifically, the operation unit 130 calculates a difference value (i.e., an elevation angle) between the elevation angle stored in the storage unit 160 and the calculated elevation angle (S420). At this time, the operation unit 130 calculates a difference value (i.e., an elevation angle) with respect to all the elevation angles stored in the storage unit 160.

The control unit 140 compares the calculated difference values and detects satellites having a minimum difference value. At this time, if there is only one satellite having the minimum elevation angle difference (i.e.,? Elevation angle) (S440; YES), the control unit 140 sets the satellite as the target satellite (S460). That is, the controller 140 sets the azimuth and elevation angle of the satellite to the target satellite position.

If there are a plurality of satellites having the minimum difference value of the elevation angle (i.e., the elevation angle), the controller 140 sets the satellite having the maximum intensity of the satellite signal received at the azimuth of the satellite as the target satellite (S480). That is, the controller 140 compares the strengths of the satellite signals received at the azimuth angles of the respective satellites with respect to a plurality of satellites having the smallest elevation difference value, and sets the satellites having the maximum received signal intensity to the target satellite position.

The antenna control apparatus 100 having the satellite search function drives the satellite antenna 350 to direct the satellite antenna 350 to the set target satellite position (S500).

The control unit 140 drives the satellite antenna 350 at the set target satellite position (i.e., the steering angle) (S520). That is, the control unit 140 generates a control signal for fixing the satellite antenna 350 to the azimuth angle and the elevation angle included in the target satellite position. The motor unit 170 generates a motor driving signal for driving the satellite antenna 350 and the antenna driving apparatus 300 drives the satellite antenna 350 in accordance with the motor driving signal from the motor unit 170 To the position corresponding to the azimuth angle and the elevation angle included in the target satellite position. At this time, in order to prevent deterioration of reception performance due to movement of the satellite, the controller 140 searches for the maximum reception azimuth by moving the satellite antenna 350 moved to the target satellite position (S540) (S560).

As described above, the antenna control apparatus 100 having a satellite search function and the satellite search method using the same have an effect of providing accurate satellite orientation without providing expert knowledge on satellite communication by providing an automatic satellite search function.

Incidentally, the antenna control apparatus 100 having a satellite search function and the satellite search method using the same can more easily operate the mobile satellite antenna 350 system by providing the automatic satellite search function, It is effective.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but many variations and modifications may be made without departing from the scope of the present invention. It will be understood that the invention may be practiced.

1 is a block diagram for explaining an antenna control apparatus having a satellite search function according to an embodiment of the present invention;

2 and 3 are views for explaining the control unit of Fig. 1; Fig.

Fig. 4 is a view for explaining the motor unit of Fig. 1; Fig.

FIG. 5 is a block diagram illustrating another configuration of an antenna control apparatus having a satellite search function according to an embodiment of the present invention; FIG.

6 is a flowchart illustrating a satellite search method using an antenna control apparatus having a satellite search function according to an embodiment of the present invention.

7 is a flowchart for explaining the input step of FIG. 6;

FIG. 8 is a flowchart for explaining the steering angle calculating step in FIG. 6; FIG.

FIG. 9 is a flowchart for explaining the satellite search step of FIG. 6; FIG.

FIG. 10 is a flowchart for explaining the target satellite setting step of FIG. 6; FIG.

FIG. 11 is a flowchart for explaining a satellite antenna driving step of FIG. 6; FIG.

Description of the Related Art

100: antenna control device 110: input part

120: Transmitting / receiving unit 130:

140: control unit 150:

160: storage unit 170: motor unit

300: Antenna driving device

Claims (16)

An input unit for receiving target satellite information; An operation unit for calculating a steering angle including an azimuth angle and an elevation angle based on target satellite information input to the input unit and position information of a satellite antenna; And The satellite antenna is fixed to the calculated elevation angle, and the satellite is detected by moving the azimuth angle of the satellite antenna within an error range of the calculated azimuth angle, and the satellite antenna is fixed at the azimuth angle detected by the satellite, The satellites are detected by moving the elevation angle of the satellite antenna within an error range of the satellite antenna, and a direction angle including an elevation angle having the smallest difference between the elevation angle detected by the satellite and the calculated elevation angle is set as a target satellite position, To the target satellite position based on a result of the comparison. The method according to claim 1, Further comprising a transceiver for transmitting and receiving data to and from the GPS satellite and the azimuth sensor, Wherein the calculation unit calculates position information of the satellite antenna based on data received from the GPS satellite and the azimuth sensor. delete The method according to claim 1, Wherein, The satellite antenna is fixed to the elevation angle calculated by the calculation unit, the satellite antenna is moved within an error range of the azimuth calculated by the calculation unit, and the satellite is detected by measuring the intensity of the received satellite signal. Antenna controller with satellite search function. The method according to claim 1, Wherein, Wherein the controller controls the satellite antenna to be fixed at an azimuth angle at which the satellite is detected and moves the satellite antenna within an error range of the elevation angle calculated by the arithmetic unit to measure the intensity of the received satellite signal, Antenna controller with search function. The method according to claim 4 or 5, A measuring unit measuring the strength of the satellite signal under the control of the controller; And And a storage unit for storing the intensity of the satellite signal measured by the measuring unit in association with the azimuth or elevation angle of the measured position. The method according to claim 1, Wherein the input unit receives the target satellite information including the hardness of the target satellite. The method according to claim 1, And a motor unit for driving the satellite antenna under the control of the controller, Wherein the motor unit includes a distribution circuit and a coefficient circuit. An input step of receiving target satellite information by an input unit; An arithmetic operation step of calculating an orientation angle including an azimuth angle and an elevation angle based on the target satellite information and the satellite antenna position information input by the operation unit; Sensing a satellite by moving the azimuth of the satellite antenna within an error range of the azimuth calculated by the controller; Detecting the satellite by fixing the satellite antenna at the azimuth angle at which the satellite is sensed and moving the elevation angle of the satellite antenna within the computed elevation angle error range; And And a setting step of setting, by the control unit, a directional angle including an elevation angle having the smallest difference from the calculated elevation angle among the elevation angles detected by the satellite, to a target satellite position A satellite search method using a control device. The method of claim 9, Further comprising a receiving step of receiving data from the GPS satellite and the azimuth sensor by the transmitting and receiving unit, Wherein the calculating step calculates the position information of the satellite antenna based on the data received by the calculating unit in the receiving step. delete The method of claim 9, In the step of sensing the satellite by moving the azimuth, Wherein the control unit fixes the satellite antenna to the elevation angle calculated in the calculation step and moves the satellite antenna within an error range of the azimuth calculated in the calculation step and searches the satellite. A satellite search method using an antenna control apparatus having an antenna. The method of claim 9, In the step of sensing the satellite by moving the elevation angle, Wherein the control unit fixes the satellite antenna at an azimuth angle at which the satellite is sensed and moves the satellite antenna within an error range of the elevation angle calculated in the calculating step and searches the satellite, A satellite search method using a control device. The method of claim 9, And a measuring step of measuring the intensity of a satellite signal received from the satellite detected in the step of sensing the satellite by moving the elevation angle by the measuring unit. Search method. 15. The method of claim 14, And a storing step of storing the intensity of the satellite signal measured in the measuring step in association with the azimuth or elevation angle of the measured position by the storage unit. Way. The method of claim 9, In the input step, Wherein the target satellite information including the hardness of the target satellite is input by the input unit.

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