WO2002039546A1 - Satellite antenna by calculation mode of opposite position between fiducial object and artificial satellite and installation method thereof - Google Patents

Satellite antenna by calculation mode of opposite position between fiducial object and artificial satellite and installation method thereof Download PDF

Info

Publication number
WO2002039546A1
WO2002039546A1 PCT/KR2001/001821 KR0101821W WO0239546A1 WO 2002039546 A1 WO2002039546 A1 WO 2002039546A1 KR 0101821 W KR0101821 W KR 0101821W WO 0239546 A1 WO0239546 A1 WO 0239546A1
Authority
WO
WIPO (PCT)
Prior art keywords
reflection plate
satellite
angle
fiducial object
reference pointer
Prior art date
Application number
PCT/KR2001/001821
Other languages
French (fr)
Inventor
Tae-In Kwon
Original Assignee
Kwon Tae In
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from KR1020000063322A external-priority patent/KR20020032253A/en
Priority claimed from KR1020000063829A external-priority patent/KR20020032997A/en
Priority claimed from KR1020000063828A external-priority patent/KR20020032996A/en
Priority claimed from KR1020000078866A external-priority patent/KR20020049657A/en
Application filed by Kwon Tae In filed Critical Kwon Tae In
Priority to AU2002214344A priority Critical patent/AU2002214344A1/en
Publication of WO2002039546A1 publication Critical patent/WO2002039546A1/en

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
    • H01Q3/26—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/125—Means for positioning
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/1207—Supports; Mounting means for fastening a rigid aerial element
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
    • H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
    • H01Q1/247—Supports; Mounting means by structural association with other equipment or articles with receiving set with frequency mixer, e.g. for direct satellite reception or Doppler radar
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
    • H01Q3/12—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical relative movement between primary active elements and secondary devices of antennas or antenna systems
    • H01Q3/16—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical relative movement between primary active elements and secondary devices of antennas or antenna systems for varying relative position of primary active element and a reflecting device
    • H01Q3/18—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical relative movement between primary active elements and secondary devices of antennas or antenna systems for varying relative position of primary active element and a reflecting device wherein the primary active element is movable and the reflecting device is fixed

Definitions

  • the present invention relates to a satellite antenna by a mode of calculating a relative position between a fiducial object and an artificial satellite and an installation method thereof, and more particularly, to a satellite antenna by a mode of calculating a relative position between a fiducial object and an artificial satellite, in which, in a method of setting the position of the satellite antenna by calculating a relative position between a fiducial object such as the celestial body or a particular geographic object and a particular static satellite, the azimuth angle of the fiducial object and the static satellite and the elevational angle of the static satellite are conveniently adjusted by using the reference pointer and the director, so that the satellite antenna can be installed in an optimal receiving state in a short time, and an installation method thereof
  • antennas to receive satellite broadcasting signals that is, a dipole antenna, a horn antenna, a reflector antenna, or a phase-array antenna.
  • the antennas have different objects for which the antennas are used and different purposes.
  • the most widely used is a reflection plate antenna (a so-called dish antenna) which has a simple structure, light and easy to install.
  • the reflection plate antenna includes a reflection plate support in a short time. including a pole extending perpendicularly from a base plate, and an antenna assembly such as a reflection plate is installed on top of the pole.
  • the antenna assembly includes a dish-shaped reflection plate for reflecting wave signals, a feed horn, and a low noise block-down converter (hereinafter called the "LNB") for amplifying low noise and lowering a f equency received by the feed horn.
  • the feed horn and the LNB are installed at a predetermined position with respect to the reflection plate.
  • the feed horn and the LNB form a reflection signal pickup unit.
  • An LNB arm is used to locate the reflection signal pickup unit at a predetermined position.
  • the signal from the LNB is input to a receiving portion (not shown) of a monitor through a cable.
  • the reflection plate of the antenna forms a reflection surface that is a flat surface or curved surface, mainly paraboloid (parabolic surface) and is designed to have various sizes according to a signal to receive.
  • the feed horn and the LNB are typically fixed in front of the reflection plate and are arranged separated by a focal length of the reflection surface from the reflection plate.
  • the antenna is classified into a parabolic antenna, a Cassegrain antenna, Gregorian antenna, and a horn reflector antenna according to the method of focusing the signals reflected by the reflection plate and the shape of the reflection plate.
  • 5,589,841 discloses a technology of generating a guide signal such as an alarming sound which can be perceived by a person so that the direction of an antenna can be optimally adjusted solely by one person who adjusts the antenna without monitoring a receiving state of a monitor.
  • the above measuring apparatuses have so complicated structures that cannot be easily installed at the antenna and the manufacturing cost is raised.
  • the installation of the satellite antenna is a job requiring complicated technique. Thus, a technician is needed which becomes a factor of increasing a cost. Further, although the satellite antenna is accurately installed, when the direction of the antenna is deviated due to a careless use or external environment, the direction of the antenna needs to be reset.
  • the direction of the antenna is adjusted until the shadow of the gnomon becomes a point.
  • An apparatus of adjusting a gnomon in a two axes or three axes direction is provided as a preferred embodiment thereof.
  • the size of the apparatus is considerably large to be able to adjust in the two axes or three axes direction, when the apparatus having that size is installed in front of a dish of the antenna, the apparatus rather serves as a hindrance so that a degree of receiving is much lowered.
  • two wires are attached to both ends of a reflection plate of an antenna to cross each other and a cross point between the wires and their shadows is made to be located at a predetermined position of the reflection plate.
  • the radius of curvature of the reflection plate becomes very large, the distance between the wires and their shadows is too short.
  • the shadow moves little so that a degree of accuracy is sharply reduced.
  • a gnomon is fixed and a shadow tracking line along which the shadow of the gnomon proceeds as time goes and a time line indicating the time of installation of an antenna are provided so that, when the shadow of the gnomon is located at a cross point of the two lines, the antenna is adjusted to be aligned in a satellite direction.
  • the line along which the shadow proceeds that is, the orbit of the sun
  • time is also given differently, according to the latitude and longitude of an area where the antenna is to be installed, the lines are different according to seasons, dates, and the installation position of the antenna and it is difficult to cope with all cases.
  • the above preferred embodiment cannot be applied to all cases except for a case in which the antenna is installed in a particular area on the earth in particular season or a particular date range.
  • the problem commonly owned by the conventional technologies using the position of the sun is that, since a work can be down only when the sun shines the reflection plate, the time for installation is short and limited.
  • a satellite antenna by a mode of calculating a relative position between a fiducial object and an artificial satellite and an installation method thereof which can be easily installed when the celestial body such as the sun is not observed well.
  • the satellite antenna comprising a reflection plate for receiving and focusing radio waves transmitted from the artificial satellite, a reflection plate stand, vertically installed and connected to a rear surface of the reflection plate, for adjusting and fixing an azimuth angel and an elevational angle of the reflection plate, a feed horn unit, provided at one side of the reflection plate, for receiving the radio waves reflected by a reflection surface of the reflection plate, and a reference pointer coupled to the reflection plate stand at the rear side of the reflection plate to be capable of rotating to the left and right and being fixed to direct the reflection plate in a relative direction of a particular static satellite an installer desires with respect to the reflection plate set to direct the
  • the reference pointer comprises a reference pointer main body having a predetermined length and having a tip end that contacts a point of either left or right side of the rear surface of the reflection plate, a clamp for fixing the reference pointer main body by being coupled to the opposite end to the tip end of the reference pointer main body while encompassing the pole of the reflection plate stand, and a coupling screw for screwing or unscrewing the clamp to fix the reference pointer main body at the pole after an azimuth angle is set according to the relative position of the static satellite with respect to the fiducial object.
  • a fiducial object director formed linearly along a direction perpendicular to the reflection plate and capable of pivoting up and down is provided at a top portion of the reflection plate so that an installer rotating the reflection plate to the left and right match the reflection plate with a direction of a light ray of the sun while observing the direction of a light ray of the sun.
  • a through hole is formed in the fiducial object director along the lengthwise direction thereof so that the direction of a light ray of the sun is observed with the naked eye through a predetermined path.
  • the means for adjusting an elevational angle with respect to the static satellite a general satellite signal level meter is used or an angle meter is adopted at the bracket of the rear surface of the reflection plate.
  • a shadow forming means for determining whether an azimuth angle of the reflection plate is correctly set with respect to the sun by means of a degree of the length of a shadow of the reflection plate projected onto the reflection plate is installed at a predetermined position on a vertical center line at the front surface of the reflection plate.
  • the shadow forming means is a wire connecting a top portion of the reflection plate and a top portion of the feed horn unit, and that marks are formed on the wire at an identical interval along the lengthwise direction, and a plumb hanging from a predetermined position of the marks in a vertical direction is provided so that an azimuth angle is adjusted by a degree of separation between a vertical string of the plumb and a lower end of the circumference of the reflection plate.
  • the shadow forming means is a fiducial object directing protrusion vertically installed to protrude on a vertical center line at the front side of the reflection plate.
  • a method of installing a satellite antenna by a mode of calculating a relative position between a fiducial object and an artificial satellite comprising the acts of adjusting a fiducial object direction angle of a reflection plate by rotating the reflection plate to the left and right around a reflection plate stand of the satellite antenna to match the direction of the reflection plate with the azimuth angle of the fiducial object, preliminarily adjusting a satellite azimuth angle of a reference pointer by calculating a value of a relative position between the fiducial object and a static satellite and pivoting the reference point contacting the rear surface of the reflection plate according to the calculated value to make the azimuth angle of the reflection plate match the direction of the static satellite, so that the reference point is primarily set to be suitable for the direction of the static satellite, adjusting a satellite azimuth angle of the reflection plate by rotating the reflection plate to the left and right around a vertically installed shaft of the reflection plate stand to the position where the reference pointer is fixed, so that the rear
  • the azimuth angle is adjusted by rotating the reflection plate to the left and right while observing the fiducial object with the naked eye through an aiming path of a fiducial object director
  • the sun is set as the fiducial object and, in the act of adjusting a fiducial object direction angle of a reflection plate, whether the azimuth angle of the reflection plate matches the direction of a light ray projected by the sun is recognized from the state of a shadow projected onto the reflection plate by a shadow forming means additionally provided on the vertical center line of the reflection plate so that the length of the shadow in the horizontal direction is adjusted to be the minimum.
  • a point where the tip end of the reference pointer contacts the rear surface of the reflection plate is marked as a standard point in the state in which the reflection plate accurately directs the sun, the reference pointer contacting the rear surface of the reflection plate is rotated to the left and right as much as a satellite azimuth angle deviation with respect to the sun, and the reflection plate is rotated to the position of the reference pointer so that the tip end of the reference pointer matches the standard point indicated on the rear surface of the reflection plate.
  • the satellite elevational angle is adjusted by matching a linear distance between a particular point of a pole for supporting the reflection plate and a particular point in the lower portion of the reflection plate with a value calculated from data. It is preferred in the present invention that, in the act of adjusting a satellite elevational angle of the reflection plate, the elevational angle of the reflection plate is adjusted by matching a vertical string with the plumb with a lower end of the circumference of the reflection plate by hanging the plumb in a vertical direction from the position of a particular mark among marks of the wire calculated in consideration of the coordinates of the sun according to time and spatial conditions.
  • a particular geographic object, a structure, or a building observed with the naked eye is set as the fiducial object and, in the act of adjusting a satellite azimuth angle of the reflection plate, one of the fiducial objects located in the same direction as the azimuth angle to a particular static satellite from the satellite antenna is selected and the angle is adjusted so that the fiducial object director installed at a top portion of the reflection plate directs the selected fiducial object.
  • FIG. 1 is a perspective view showing the structure of a reference pointer adopted in the present invention
  • FIG. 2 is a perspective view showing the structure of a fiducial object director adopted in the present invention
  • FIG. 3 is a schematic side view showing a preferred embodiment of setting an azimuth angle and an elevational angle (altitude) of a static satellite by using the reference pointer and an angle meter or an LNB arm as a shadow forming unit adopted in the present invention
  • FIG. 4 is a schematic plan view of a satellite antenna for explaining the principle of setting an azimuth angle of the static satellite in a method of calculating a relative position between a fiducial object and an artificial satellite according to the present invention
  • FIG. 5 is a schematic side view showing the state in which the fiducial object director of the present invention is adopted
  • FIG. 6 is a schematic side view showing an elevational angle (altitude) adjustment structure of a satellite using a wire and a plumb applied to the present invention.
  • FIG. 7 is a schematic side view showing an azimuth angle adjustment structure by a celestial body directing protrusion applied to the present invention.
  • a satellite antenna includes a reflection plate 20 for receiving and focusing radio waves transmitted from an artificial satellite, that is, a static satellite 2, a reflection plate stand 10 connected to the rear side of the reflection plate 20 and installed in a vertical direction to be fixed by adjusting an azimuth angle and an elevational angle of the reflection plate 20, a feed horn unit 40 provided at one side of the reflection plate 20 to receive the radio waves reflected by the reflection plate 20, and a reference pointer coupled to the reflection plate stand 10 at the rear side of the reflection plate 20 to be capable of rotating to the left and right and being fixed at its position so that an installer can rotate the reference pointer 10 to direct the reflection plate in a relative direction of the desired particular static satellite 2 with respect to the reflection plate 20 set to direct the reflection plate toward a fiducial object 1 such as the sun.
  • an artificial satellite that is, a static satellite 2
  • a reflection plate stand 10 connected to the rear side of the reflection plate 20 and installed in a vertical direction to be fixed by adjusting an azimuth angle and an elevational angle of the reflection plate 20
  • the sun or any particular geographic object observed with the naked eye can be set as the fiducial object 1.
  • paraboloid type reflection plate 20 is mainly described in the present invention, it is obvious that a reflection plate having any type of a shape can be applied and a bracket 21 for coupling the reflection plate 20 to the reflection plate stand 10 is fixed at the center of a convex rear surface of the reflection plate 20.
  • the bracket 21 is coupled to a pole 31 of the reflection plate stand 30 by a hinge shaft pin 23 (refer to FIG. 5) penetrating the upper portion of the pole 31 in a horizontal direction, to adjust an angle (an elevational angle) of the reflection plate 20 up and down around the hinge shaft pin 23.
  • An angle meter 50 is formed at the outer surface of the bracket 21 so that the state of adjustment of an angle can be recognized. Also, by screwing or unscrewing a screw for fixing the bracket 21 to the pole 31, the bracket 21 can be rotated to the left and right (in a direction of an azimuth angle) around the pole 31 and fixed at a desired position.
  • the feed horn unit 40 includes an LNB arm 43 which is bent and coupled to the bracket 21 to fix an LNB 41 and a feed horn 42 at an appropriate position.
  • the reference pointer 10 as a preferred embodiment shown in FIG. 1, includes a reference pointer main body 11 having a predetermined length and having a tip end 12 that can contact a point of either left or right side of the rear surface of the reflection plate 20, a clamp 13 for fixing the reference pointer main body 11 by being coupled to the opposite end to the tip end of the reference pointer main body 11 while encompassing the pole 31 of the reflection plate stand 30, and a coupling screw 14 for screwing or unscrewing the clamp 13 to fix the reference pointer main body 11 at the pole 31 after an azimuth angle is set according to the relative position of the static satellite 2 with respect to the fiducial object 1.
  • a fiducial object director 60 can be installed at the top portion of the reflection plate 20, if necessary, as shown in FIG. 2.
  • the fiducial object director 60 is formed to be linearly along the direction perpendicular to the reflection plate 20 and capable of pivoting up and down so that, for example, when the sun is set as the fiducial object 1, an installer can rotate the reflection plate 30 to the left and right to direct the reflection plate toward the sun while observing the sun with the naked eye. That is, the fiducial object director 60 has a through hole 62 formed along the lengthwise direction of the director main body 61 so that the direction of a light ray of the sun can be observed with the naked eye through a predetermined path.
  • An aiming line 63 can be formed on the inner circumferential surface of the through hole 62 along the lengthwise direction thereof.
  • a pivot shaft 64 is protruding from both outer side surfaces of the director main body 61.
  • the pivot shaft 64 is coupled to a director bracket 65 for supporting the director main body 61 to be capable of pivoting up and down around the pivot shaft 64 and fixing the director main body 61 to the reflection plate 20.
  • fiducial object director 60 Although not shown in the drawings, a structure which is formed to extend along a linear rail and has an aiming protrusion formed on the rail is possible.
  • the shadow forming means S for determining whether the azimuth angle of the reflection plate 20 is set properly with respect to the sun (fiducial object), by the length of a shadow projected by the reflection plate 20, can be further be provided at a predetermined position on the vertical center line at the front side of the reflection plate 20.
  • the shadow forming means S is the LNB arm 43 connecting the feed horn unit 40 and the reflection plate 20 and located on the vertical center line of the reflection plate 20.
  • the azimuth angle can be adjusted by the length of the shadow of the LNB arm 43 displayed on the reflection plate 20. in this case, the azimuth angle is adjusted by rotating the reflection plate 20 to the left and right in a direction in which the length of the shadow decreases.
  • the shadow forming means S as shown in FIG. 6, can be formed by a wire 70 connecting the top portion of the reflection plate 20 and the top portion of the feed horn 40.
  • the shadow forming means S can be formed by a fiducial object directing protrusion 80 protruding from the front surface of the reflection plate 20 on the vertical center line.
  • elevational angle adjustment means can be provided. That is, as the means for adjusting an elevational angle with respect to the static satellite 2, a general satellite signal level meter is used, or the angle meter 50 which can fix the reflection plate 20 at a desired angle when the reflection plate 20 pivots up and down around the hinge shaft pin 23 hinge-coupled to the reflection plate stand 30, is applied to the bracket 21 at the rear surface of the reflection plate 20 as described above.
  • the level meter may be either an internal level meter included in a receiver or an external level meter forming an additional equipment.
  • the vertical angle of the reflection plate 20 is fixed (set) in a direction when a receiving signal detecting by the level meter is a peak point.
  • a plumb 73 hanging from a predetermined mark 72 of the marks 71 corresponding to a particular position in a vertical direction is provided so that an azimuth angle can be adjusted by a degree of separation between a vertical string of the plumb 73 and the lower end of the circumference of the reflection plate 20.
  • the fiducial object 1 is the sun
  • the application of the above various preferred embodiments is possible.
  • the particular geographic object is set as the fiducial object, since the geographic object is not a light producing object, the preferred embodiments related to the shadow forming means S cannot be applied.
  • a method of installing a satellite by a mode of calculating a relative position between the fiducial object 1 and the static satellite 2 according to the reference pointer 10 of the present invention includes a step of adjusting a fiducial object direction angle of the reflection plate 20 in which the reflection plate 20 is rotated to the left and right around the reflection plate stand 30 of the satellite antenna to match the direction of the reflection plate 20 with the azimuth angle of the fiducial object 1, a step of preliminarily adjusting a satellite azimuth angle of the reference pointer in which, to make the azimuth angle of the reflection plate 20 match the direction of the static satellite 2, a value of a relative position between the fiducial object 1 and the static satellite 2 is calculated and the reference pointer 10 contacting the rear surface of the reflection plate 20 is rotated to the left and right so that the reference pointer 10 is preliminary set to be suitable for the azimuth angle of the static satellite 2, a step of adjusting a satellite azimuth angle of the reflection plate 20 in which the reflection plate 20 is
  • the azimuth angle can be adjusted by applying the fiducial object director 60 that is an azimuth angle adjustment auxiliary means.
  • the azimuth angle can also be adjusted by rotating the reflection plate 20 to the left and right while observing the fiducial object through an aiming path of the fiducial object director 60 having the structure shown in FIG. 2, that is, the through hole 62 and the aiming line 63, with the naked eye.
  • a point where the tip end 12 of the reference pointer 10 contacts the rear surface of the reflection plate 20 is marked as a standard point 22 in the state in which the reflection plate 20 accurately directs the sun.
  • the reference pointer 10 contacting the rear surface of the reflection plate 20 is rotated to the left and right as much as a satellite azimuth angle deviation with respect to the sun.
  • the reflection plate 20 is rotated to the position of the reference pointer 10 so that the tip end 12 of the reference pointer 10 matches the standard point 22 indicated on the rear surface of the reflection plate 20.
  • the elevational angle is adjusted in a method of using the angle meter 50 or by matching a linear distance between a particular point of the pole 31 for supporting the reflection plate 20 and a particular point in the lower portion of the reflection plate 20 with a value calculated from data.
  • the azimuth angle and elevational angle can be adjusted by the shadow forming means S. That is, as shown in FIGS. 6 and 7, in the step of adjusting a fiducial object direction angle of the reflection plate 20, whether the azimuth angle of the reflection plate 20 matches the direction of a light ray projected by the sun is recognized from the state of a shadow projected onto the reflection plate 20 by the shadow forming means additionally provided on the vertical center line of the reflection plate 20 so that the length of the shadow in the horizontal direction is adjusted to be the minimum.
  • the azimuth angle is adjusted by the position of the shadow of the wire 70 projected onto the reflection plate 20 or by using the wire with marks 71, that is, the azimuth angle and elevational angle can be adjusted by the state of a shadow of the wire 70 projected onto the reflection plate 20 and a degree of separation of a vertical string 74 having the plumb 73 at the end thereof and passing a predetermined mark 72 from the edge of the central lower portion of the reflection plate 20 so that the reflection plate 20 directs the sun.
  • the elevational angle is accurately adjusted when the vertical string 74 contacts the edge of the central lower portion of the reflection plate 20 without interference.
  • the adjustment of an azimuth angle can be made by the fiducial object directing protrusion 80 that is the shadow forming means S.
  • the azimuth angel and elevational angle can be adjusted by a particular geographic object other than the case in which the sun is set as the fiducial object 1.
  • the fiducial object 1 may be a particular geographic object, a structure, or a building which can be observed with the naked eye.
  • a satellite azimuth angle of the reflection plate as shown in FIG. 5, one of the above fiducial objects located in the same direction as the azimuth angle to the static satellite from the satellite antenna is selected, and the angle is adjusted so that the fiducial object director 60 installed at the top portion of the reflection plate 20 directs the selected fiducial object.
  • the satellite antenna by a mode of calculating a relative position between the fiducial object and the artificial satellite according to the present invention and an installation method thereof, in a method of setting the position of the satellite antenna by calculating a relative position between a fiducial object such as the celestial body or a particular geographic object and a particular static satellite, the azimuth angle of the fiducial object and the static satellite and the elevational angle of the static satellite are conveniently adjusted by using the reference pointer and the director, so that the satellite antenna can be installed in an optimal receiving state in a short time. Also, in the case of using the sun as the fiducial object, by applying the shadow forming means of the present invention, the azimuth angle of the satellite can be easily found without using the convention complicated direction apparatus. Also, when the celestial body is not observed well, the satellite can be easily directed by means of a relative azimuth angel with respect to a particular geographic object using the fiducial object director.
  • a user can directly install the satellite antenna so that the cost for installing the antenna can be remarkably reduced.
  • the direction of the antenna is changed after installation due to a misuse thereof or an external environment, a user can easily reset the antenna.

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Aerials With Secondary Devices (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)

Abstract

A satellite antenna by a mode of calculating a relative position between a fiducial object and an artificial satellite, the satellite antenna includes a reflection plate for receiving and focusing radio waves transmitted from the artificial satellite, a reflection plate stand, vertically installed and connected to a rear surface of the reflection plate, for adjusting and fixing an azimuth angel and an elevational angle of the reflection plate, a feed horn unit, is provided at one side of the reflection plate, for receiving the radio waves reflected by a reflection surface of the reflection plate, and a reference pointer coupled to the reflection plate stand at the rear side of the reflection plate to be capable of rotating to the left and right and being fixed to direct the reflection plate in a relative direction of a particular static satellite an installer desires with respect to the reflection plate set to direct the reflection plate toward the fiducial object. Thus, by using a reference point and a director, the azimuth angle of the fiducial object and the static satellite and the elevational angle of the satellite are conveniently adjusted so thatthe satellite antenna can be installed in an optimal receiving state in a short time.

Description

SATELLITE ANTENNA BY CALCULATION MODE OF OPPOSITE
POSITION BETWEEN FIDUCIAL OBJECT AND ARTIFICIAL SATELLITE
AND INSTALLATION METHOD THEREOF
Technical Field
The present invention relates to a satellite antenna by a mode of calculating a relative position between a fiducial object and an artificial satellite and an installation method thereof, and more particularly, to a satellite antenna by a mode of calculating a relative position between a fiducial object and an artificial satellite, in which, in a method of setting the position of the satellite antenna by calculating a relative position between a fiducial object such as the celestial body or a particular geographic object and a particular static satellite, the azimuth angle of the fiducial object and the static satellite and the elevational angle of the static satellite are conveniently adjusted by using the reference pointer and the director, so that the satellite antenna can be installed in an optimal receiving state in a short time, and an installation method thereof
Background Art
With the recent appearance of digital satellite broadcasting, satellite broadcasting becomes popular and a need for a satellite antenna gradually increases. There are various types of antennas to receive satellite broadcasting signals, that is, a dipole antenna, a horn antenna, a reflector antenna, or a phase-array antenna. Actually, the antennas have different objects for which the antennas are used and different purposes. Among the above antennas, the most widely used is a reflection plate antenna (a so-called dish antenna) which has a simple structure, light and easy to install.
The reflection plate antenna includes a reflection plate support in a short time. including a pole extending perpendicularly from a base plate, and an antenna assembly such as a reflection plate is installed on top of the pole. The antenna assembly includes a dish-shaped reflection plate for reflecting wave signals, a feed horn, and a low noise block-down converter (hereinafter called the "LNB") for amplifying low noise and lowering a f equency received by the feed horn. The feed horn and the LNB are installed at a predetermined position with respect to the reflection plate. The feed horn and the LNB form a reflection signal pickup unit. An LNB arm is used to locate the reflection signal pickup unit at a predetermined position. The signal from the LNB is input to a receiving portion (not shown) of a monitor through a cable. The reflection plate of the antenna forms a reflection surface that is a flat surface or curved surface, mainly paraboloid (parabolic surface) and is designed to have various sizes according to a signal to receive.
The feed horn and the LNB are typically fixed in front of the reflection plate and are arranged separated by a focal length of the reflection surface from the reflection plate.
Also, the antenna is classified into a parabolic antenna, a Cassegrain antenna, Gregorian antenna, and a horn reflector antenna according to the method of focusing the signals reflected by the reflection plate and the shape of the reflection plate.
It is obvious that these various types of satellite antenna must exert all of high gain, high efficiency, and high directional performances. That is, since a signal transmitted by a satellite revolving together with the earth high above the earth exhibits very high directivity, the direction of an antenna need to accurately face toward the satellite. Since a degree of the directivity of the satellite is set within a range of 2-3°, when the direction of the satellite antenna is out of this range, the signal being received is completely cut off unlike general airborne broadcasting, hi particular, the directivity becomes severe with digital satellite broadcasting. Thus, since the satellite antenna should maintain high directivity, considerable efforts are needed to install the satellite antenna in an accurate direction. U.S. Patent No. 5,589,841 discloses a technology of generating a guide signal such as an alarming sound which can be perceived by a person so that the direction of an antenna can be optimally adjusted solely by one person who adjusts the antenna without monitoring a receiving state of a monitor.
However, the above measuring apparatuses have so complicated structures that cannot be easily installed at the antenna and the manufacturing cost is raised.
As described above, the installation of the satellite antenna is a job requiring complicated technique. Thus, a technician is needed which becomes a factor of increasing a cost. Further, although the satellite antenna is accurately installed, when the direction of the antenna is deviated due to a careless use or external environment, the direction of the antenna needs to be reset.
To solve the above problem, a technology of calculating a relative position of a satellite with respect to the sun and directing an antenna toward the satellite using the shadow of the sun has been proposed. An example of the above technology is described in a publication written by Walle. A. C, entitled "The Sunshine-shadow Method of Locating Satellite and Boresighting Dishes" (Satellite Retailer, Triple-D Publishing, Shelby, NC Dec. 1995). Also, In U.S. Patent No. 5,760,739 (Richard), a gnomon that is adjustable is installed at an antenna and setting information is calculated based on the relative position of a satellite with respect to the sun. Then, the gnomon is adjusted in 2D or 3D to face the satellite based on the above calculated information. The direction of the antenna is adjusted until the shadow of the gnomon becomes a point. An apparatus of adjusting a gnomon in a two axes or three axes direction is provided as a preferred embodiment thereof. However, it is very difficult to make a degree of directivity to the satellite accurate to a degree of 1-2°. Further, since the size of the apparatus is considerably large to be able to adjust in the two axes or three axes direction, when the apparatus having that size is installed in front of a dish of the antenna, the apparatus rather serves as a hindrance so that a degree of receiving is much lowered.
As another preferred embodiment, two wires are attached to both ends of a reflection plate of an antenna to cross each other and a cross point between the wires and their shadows is made to be located at a predetermined position of the reflection plate. In this case, when the radius of curvature of the reflection plate becomes very large, the distance between the wires and their shadows is too short. Thus, when an angle is deviated to a degree, the shadow moves little so that a degree of accuracy is sharply reduced. hi both of the above preferred embodiments, a user must inconveniently adjust the gnomon according to the setting information calculated differently based on the installation position and time of the antenna, which is a difficult job for general users.
Meanwhile, in another preferred embodiment of the above patent, a gnomon is fixed and a shadow tracking line along which the shadow of the gnomon proceeds as time goes and a time line indicating the time of installation of an antenna are provided so that, when the shadow of the gnomon is located at a cross point of the two lines, the antenna is adjusted to be aligned in a satellite direction. However, since the line along which the shadow proceeds, that is, the orbit of the sun, is differently set and time is also given differently, according to the latitude and longitude of an area where the antenna is to be installed, the lines are different according to seasons, dates, and the installation position of the antenna and it is difficult to cope with all cases. Thus, the above preferred embodiment cannot be applied to all cases except for a case in which the antenna is installed in a particular area on the earth in particular season or a particular date range. In particular, the problem commonly owned by the conventional technologies using the position of the sun is that, since a work can be down only when the sun shines the reflection plate, the time for installation is short and limited.
Disclosure of the Invention
To solve the above problem, it is an objective of the present invention to provide a satellite antenna by a mode of calculating a relative position between a fiducial object and an artificial satellite and an installation method thereof which can be easily manipulated and installed by a user in an optimal receiving state in a short time.
It is another objective of the present invention to provide a satellite antenna by a mode of calculating a relative position between a fiducial object and an artificial satellite and an installation method thereof which can be easily installed when the celestial body such as the sun is not observed well. To achieve the above objectives, there is provided a satellite antenna by a mode of calculating a relative position between a fiducial object and an artificial satellite, the satellite antenna comprising a reflection plate for receiving and focusing radio waves transmitted from the artificial satellite, a reflection plate stand, vertically installed and connected to a rear surface of the reflection plate, for adjusting and fixing an azimuth angel and an elevational angle of the reflection plate, a feed horn unit, provided at one side of the reflection plate, for receiving the radio waves reflected by a reflection surface of the reflection plate, and a reference pointer coupled to the reflection plate stand at the rear side of the reflection plate to be capable of rotating to the left and right and being fixed to direct the reflection plate in a relative direction of a particular static satellite an installer desires with respect to the reflection plate set to direct the reflection plate toward the fiducial object.
It is preferred in the present invention that the reference pointer comprises a reference pointer main body having a predetermined length and having a tip end that contacts a point of either left or right side of the rear surface of the reflection plate, a clamp for fixing the reference pointer main body by being coupled to the opposite end to the tip end of the reference pointer main body while encompassing the pole of the reflection plate stand, and a coupling screw for screwing or unscrewing the clamp to fix the reference pointer main body at the pole after an azimuth angle is set according to the relative position of the static satellite with respect to the fiducial object. It is preferred in the present invention that a fiducial object director formed linearly along a direction perpendicular to the reflection plate and capable of pivoting up and down is provided at a top portion of the reflection plate so that an installer rotating the reflection plate to the left and right match the reflection plate with a direction of a light ray of the sun while observing the direction of a light ray of the sun.
It is preferred in the present invention that a through hole is formed in the fiducial object director along the lengthwise direction thereof so that the direction of a light ray of the sun is observed with the naked eye through a predetermined path. It is preferred in the present invention that, the means for adjusting an elevational angle with respect to the static satellite, a general satellite signal level meter is used or an angle meter is adopted at the bracket of the rear surface of the reflection plate.
It is preferred in the present invention that a shadow forming means for determining whether an azimuth angle of the reflection plate is correctly set with respect to the sun by means of a degree of the length of a shadow of the reflection plate projected onto the reflection plate is installed at a predetermined position on a vertical center line at the front surface of the reflection plate.
It is preferred in the present invention that the shadow forming means is a wire connecting a top portion of the reflection plate and a top portion of the feed horn unit, and that marks are formed on the wire at an identical interval along the lengthwise direction, and a plumb hanging from a predetermined position of the marks in a vertical direction is provided so that an azimuth angle is adjusted by a degree of separation between a vertical string of the plumb and a lower end of the circumference of the reflection plate.
It is preferred in the present invention that the shadow forming means is a fiducial object directing protrusion vertically installed to protrude on a vertical center line at the front side of the reflection plate.
To achieve the above objectives, there is provided a method of installing a satellite antenna by a mode of calculating a relative position between a fiducial object and an artificial satellite, the method comprising the acts of adjusting a fiducial object direction angle of a reflection plate by rotating the reflection plate to the left and right around a reflection plate stand of the satellite antenna to match the direction of the reflection plate with the azimuth angle of the fiducial object, preliminarily adjusting a satellite azimuth angle of a reference pointer by calculating a value of a relative position between the fiducial object and a static satellite and pivoting the reference point contacting the rear surface of the reflection plate according to the calculated value to make the azimuth angle of the reflection plate match the direction of the static satellite, so that the reference point is primarily set to be suitable for the direction of the static satellite, adjusting a satellite azimuth angle of the reflection plate by rotating the reflection plate to the left and right around a vertically installed shaft of the reflection plate stand to the position where the reference pointer is fixed, so that the rear surface of the reflection plate contacts a tip end of the reference pointer, and adjusting a satellite elevational angle of the reflection plate by rotating the reflection plate up and down around an upper or lower portion standard point on a vertical center line of the reflection plate and fixing at an altitude corresponding to an elevational angle of the static satellite corresponding to a calculated value of the relative position between the fiducial object and the static satellite.
It is preferred in the present invention that, in the act of adjusting a fiducial object direction angle of a reflection plate, the azimuth angle is adjusted by rotating the reflection plate to the left and right while observing the fiducial object with the naked eye through an aiming path of a fiducial object director
It is preferred in the present invention that the sun is set as the fiducial object and, in the act of adjusting a fiducial object direction angle of a reflection plate, whether the azimuth angle of the reflection plate matches the direction of a light ray projected by the sun is recognized from the state of a shadow projected onto the reflection plate by a shadow forming means additionally provided on the vertical center line of the reflection plate so that the length of the shadow in the horizontal direction is adjusted to be the minimum.
It is preferred in the present invention that, in the act of preliminarily adjusting a satellite azimuth angle of the reference pointer, a point where the tip end of the reference pointer contacts the rear surface of the reflection plate is marked as a standard point in the state in which the reflection plate accurately directs the sun, the reference pointer contacting the rear surface of the reflection plate is rotated to the left and right as much as a satellite azimuth angle deviation with respect to the sun, and the reflection plate is rotated to the position of the reference pointer so that the tip end of the reference pointer matches the standard point indicated on the rear surface of the reflection plate. It is preferred in the present invention that, in the act of adjusting a satellite elevational angle of the reflection plate, the satellite elevational angle is adjusted by matching a linear distance between a particular point of a pole for supporting the reflection plate and a particular point in the lower portion of the reflection plate with a value calculated from data. It is preferred in the present invention that, in the act of adjusting a satellite elevational angle of the reflection plate, the elevational angle of the reflection plate is adjusted by matching a vertical string with the plumb with a lower end of the circumference of the reflection plate by hanging the plumb in a vertical direction from the position of a particular mark among marks of the wire calculated in consideration of the coordinates of the sun according to time and spatial conditions.
It is preferred in the present invention that a particular geographic object, a structure, or a building observed with the naked eye is set as the fiducial object and, in the act of adjusting a satellite azimuth angle of the reflection plate, one of the fiducial objects located in the same direction as the azimuth angle to a particular static satellite from the satellite antenna is selected and the angle is adjusted so that the fiducial object director installed at a top portion of the reflection plate directs the selected fiducial object.
Brief Description of the Drawings
FIG. 1 is a perspective view showing the structure of a reference pointer adopted in the present invention; FIG. 2 is a perspective view showing the structure of a fiducial object director adopted in the present invention;
FIG. 3 is a schematic side view showing a preferred embodiment of setting an azimuth angle and an elevational angle (altitude) of a static satellite by using the reference pointer and an angle meter or an LNB arm as a shadow forming unit adopted in the present invention;
FIG. 4 is a schematic plan view of a satellite antenna for explaining the principle of setting an azimuth angle of the static satellite in a method of calculating a relative position between a fiducial object and an artificial satellite according to the present invention;
FIG. 5 is a schematic side view showing the state in which the fiducial object director of the present invention is adopted;
FIG. 6 is a schematic side view showing an elevational angle (altitude) adjustment structure of a satellite using a wire and a plumb applied to the present invention; and
FIG. 7 is a schematic side view showing an azimuth angle adjustment structure by a celestial body directing protrusion applied to the present invention.
Best mode for carrying out the Invention Referring to FIGS. 3 and 4, a satellite antenna according to the present invention includes a reflection plate 20 for receiving and focusing radio waves transmitted from an artificial satellite, that is, a static satellite 2, a reflection plate stand 10 connected to the rear side of the reflection plate 20 and installed in a vertical direction to be fixed by adjusting an azimuth angle and an elevational angle of the reflection plate 20, a feed horn unit 40 provided at one side of the reflection plate 20 to receive the radio waves reflected by the reflection plate 20, and a reference pointer coupled to the reflection plate stand 10 at the rear side of the reflection plate 20 to be capable of rotating to the left and right and being fixed at its position so that an installer can rotate the reference pointer 10 to direct the reflection plate in a relative direction of the desired particular static satellite 2 with respect to the reflection plate 20 set to direct the reflection plate toward a fiducial object 1 such as the sun.
Here, the sun or any particular geographic object observed with the naked eye can be set as the fiducial object 1.
Although the paraboloid type reflection plate 20 is mainly described in the present invention, it is obvious that a reflection plate having any type of a shape can be applied and a bracket 21 for coupling the reflection plate 20 to the reflection plate stand 10 is fixed at the center of a convex rear surface of the reflection plate 20.
The bracket 21 is coupled to a pole 31 of the reflection plate stand 30 by a hinge shaft pin 23 (refer to FIG. 5) penetrating the upper portion of the pole 31 in a horizontal direction, to adjust an angle (an elevational angle) of the reflection plate 20 up and down around the hinge shaft pin 23. An angle meter 50 is formed at the outer surface of the bracket 21 so that the state of adjustment of an angle can be recognized. Also, by screwing or unscrewing a screw for fixing the bracket 21 to the pole 31, the bracket 21 can be rotated to the left and right (in a direction of an azimuth angle) around the pole 31 and fixed at a desired position.
The feed horn unit 40 includes an LNB arm 43 which is bent and coupled to the bracket 21 to fix an LNB 41 and a feed horn 42 at an appropriate position.
The reference pointer 10, as a preferred embodiment shown in FIG. 1, includes a reference pointer main body 11 having a predetermined length and having a tip end 12 that can contact a point of either left or right side of the rear surface of the reflection plate 20, a clamp 13 for fixing the reference pointer main body 11 by being coupled to the opposite end to the tip end of the reference pointer main body 11 while encompassing the pole 31 of the reflection plate stand 30, and a coupling screw 14 for screwing or unscrewing the clamp 13 to fix the reference pointer main body 11 at the pole 31 after an azimuth angle is set according to the relative position of the static satellite 2 with respect to the fiducial object 1.
As an auxiliary means for adjusting an azimuth angle, a fiducial object director 60 can be installed at the top portion of the reflection plate 20, if necessary, as shown in FIG. 2. The fiducial object director 60 is formed to be linearly along the direction perpendicular to the reflection plate 20 and capable of pivoting up and down so that, for example, when the sun is set as the fiducial object 1, an installer can rotate the reflection plate 30 to the left and right to direct the reflection plate toward the sun while observing the sun with the naked eye. That is, the fiducial object director 60 has a through hole 62 formed along the lengthwise direction of the director main body 61 so that the direction of a light ray of the sun can be observed with the naked eye through a predetermined path. An aiming line 63 can be formed on the inner circumferential surface of the through hole 62 along the lengthwise direction thereof. A pivot shaft 64 is protruding from both outer side surfaces of the director main body 61. The pivot shaft 64 is coupled to a director bracket 65 for supporting the director main body 61 to be capable of pivoting up and down around the pivot shaft 64 and fixing the director main body 61 to the reflection plate 20.
As another structure of the fiducial object director 60, although not shown in the drawings, a structure which is formed to extend along a linear rail and has an aiming protrusion formed on the rail is possible.
Also, in addition to the described azimuth angle adjustment means, when the sun is set as the fiducial object 1, a variety of azimuth angle adjustment auxiliary means by a shadow forming unit S are provided.
The shadow forming means S for determining whether the azimuth angle of the reflection plate 20 is set properly with respect to the sun (fiducial object), by the length of a shadow projected by the reflection plate 20, can be further be provided at a predetermined position on the vertical center line at the front side of the reflection plate 20.
That is, the shadow forming means S, as shown in FIG. 3, is the LNB arm 43 connecting the feed horn unit 40 and the reflection plate 20 and located on the vertical center line of the reflection plate 20. The azimuth angle can be adjusted by the length of the shadow of the LNB arm 43 displayed on the reflection plate 20. in this case, the azimuth angle is adjusted by rotating the reflection plate 20 to the left and right in a direction in which the length of the shadow decreases. Also, the shadow forming means S, as shown in FIG. 6, can be formed by a wire 70 connecting the top portion of the reflection plate 20 and the top portion of the feed horn 40.
Alternatively, the shadow forming means S, as shown in FIG. 7, can be formed by a fiducial object directing protrusion 80 protruding from the front surface of the reflection plate 20 on the vertical center line.
In addition to the above structures, a variety of elevational angle adjustment means can be provided. That is, as the means for adjusting an elevational angle with respect to the static satellite 2, a general satellite signal level meter is used, or the angle meter 50 which can fix the reflection plate 20 at a desired angle when the reflection plate 20 pivots up and down around the hinge shaft pin 23 hinge-coupled to the reflection plate stand 30, is applied to the bracket 21 at the rear surface of the reflection plate 20 as described above. Here, the level meter may be either an internal level meter included in a receiver or an external level meter forming an additional equipment. The vertical angle of the reflection plate 20 is fixed (set) in a direction when a receiving signal detecting by the level meter is a peak point. Or, in an application of the shadow forming means S of FIG. 6, in addition to the wire 70 with marks 71 at an identical interval along the lengthwise of the wire 70, a plumb 73 hanging from a predetermined mark 72 of the marks 71 corresponding to a particular position in a vertical direction is provided so that an azimuth angle can be adjusted by a degree of separation between a vertical string of the plumb 73 and the lower end of the circumference of the reflection plate 20.
Although the above respective structures are described assuming that the fiducial object 1 is the sun, when a particular geographic object is set as the fiducial object 1, the application of the above various preferred embodiments is possible. However, when the particular geographic object is set as the fiducial object, since the geographic object is not a light producing object, the preferred embodiments related to the shadow forming means S cannot be applied.
Hereinafter, the method of setting an azimuth angle and elevational angle and the principle of the operation thereof according to the preferred embodiments of the present invention will be described.
A method of installing a satellite by a mode of calculating a relative position between the fiducial object 1 and the static satellite 2 according to the reference pointer 10 of the present invention, as shown in FIG. 4, includes a step of adjusting a fiducial object direction angle of the reflection plate 20 in which the reflection plate 20 is rotated to the left and right around the reflection plate stand 30 of the satellite antenna to match the direction of the reflection plate 20 with the azimuth angle of the fiducial object 1, a step of preliminarily adjusting a satellite azimuth angle of the reference pointer in which, to make the azimuth angle of the reflection plate 20 match the direction of the static satellite 2, a value of a relative position between the fiducial object 1 and the static satellite 2 is calculated and the reference pointer 10 contacting the rear surface of the reflection plate 20 is rotated to the left and right so that the reference pointer 10 is preliminary set to be suitable for the azimuth angle of the static satellite 2, a step of adjusting a satellite azimuth angle of the reflection plate 20 in which the reflection plate 20 is rotated to the left and right to the position where the reference pointer 10 is fixed around the vertically installed shaft of the reflection plate stand 30, that is, the pole 31, so that the rear surface of the reflection plate 20 contacts the tip end 12 of the reference pointer 10, a step of adjusting a satellite elevational angle of the reflection plate 20 in which the reflection plate 20 is rotated up and down around the upper or lower portion standard point on the vertical center line of the reflection plate 20 and fixed at an altitude (elevational angle) matching the elevational angle of the static satellite 2, in order to match a calculated value of the relative position between the fiducial object 1 and the static satellite 2. Here, reference letter a in FIG. 4 denotes a relative azimuth angle between the fiducial object 1 and the static satellite 2.
Also, as shown in FIG. 5, the azimuth angle can be adjusted by applying the fiducial object director 60 that is an azimuth angle adjustment auxiliary means. In other words, in the step of adjusting a fiducial object direction angle of the reflection plate 20, the azimuth angle can also be adjusted by rotating the reflection plate 20 to the left and right while observing the fiducial object through an aiming path of the fiducial object director 60 having the structure shown in FIG. 2, that is, the through hole 62 and the aiming line 63, with the naked eye.
In the step of preliminarily adjusting a satellite azimuth angle of the reference pointer, a point where the tip end 12 of the reference pointer 10 contacts the rear surface of the reflection plate 20 is marked as a standard point 22 in the state in which the reflection plate 20 accurately directs the sun. Next, the reference pointer 10 contacting the rear surface of the reflection plate 20 is rotated to the left and right as much as a satellite azimuth angle deviation with respect to the sun. Then, the reflection plate 20 is rotated to the position of the reference pointer 10 so that the tip end 12 of the reference pointer 10 matches the standard point 22 indicated on the rear surface of the reflection plate 20.
Also, in the case of using the reference pointer 10, the elevational angle is adjusted in a method of using the angle meter 50 or by matching a linear distance between a particular point of the pole 31 for supporting the reflection plate 20 and a particular point in the lower portion of the reflection plate 20 with a value calculated from data.
Meanwhile, when the sun is set as the fiducial object 1, the azimuth angle and elevational angle can be adjusted by the shadow forming means S. That is, as shown in FIGS. 6 and 7, in the step of adjusting a fiducial object direction angle of the reflection plate 20, whether the azimuth angle of the reflection plate 20 matches the direction of a light ray projected by the sun is recognized from the state of a shadow projected onto the reflection plate 20 by the shadow forming means additionally provided on the vertical center line of the reflection plate 20 so that the length of the shadow in the horizontal direction is adjusted to be the minimum.
First, as shown in FIG. 6, when the wire 70 is used, in the step of adjusting a fiducial object direction angle of the reflection plate 20, the azimuth angle is adjusted by the position of the shadow of the wire 70 projected onto the reflection plate 20 or by using the wire with marks 71, that is, the azimuth angle and elevational angle can be adjusted by the state of a shadow of the wire 70 projected onto the reflection plate 20 and a degree of separation of a vertical string 74 having the plumb 73 at the end thereof and passing a predetermined mark 72 from the edge of the central lower portion of the reflection plate 20 so that the reflection plate 20 directs the sun. Here, it can be said that the elevational angle is accurately adjusted when the vertical string 74 contacts the edge of the central lower portion of the reflection plate 20 without interference.
Also, as shown in FIG. 7, the adjustment of an azimuth angle can be made by the fiducial object directing protrusion 80 that is the shadow forming means S. The azimuth angel and elevational angle can be adjusted by a particular geographic object other than the case in which the sun is set as the fiducial object 1.
The fiducial object 1 may be a particular geographic object, a structure, or a building which can be observed with the naked eye. In the step of adjusting a satellite azimuth angle of the reflection plate, as shown in FIG. 5, one of the above fiducial objects located in the same direction as the azimuth angle to the static satellite from the satellite antenna is selected, and the angle is adjusted so that the fiducial object director 60 installed at the top portion of the reflection plate 20 directs the selected fiducial object.
Industrial Applicability
As described above, according to the satellite antenna by a mode of calculating a relative position between the fiducial object and the artificial satellite according to the present invention and an installation method thereof, in a method of setting the position of the satellite antenna by calculating a relative position between a fiducial object such as the celestial body or a particular geographic object and a particular static satellite, the azimuth angle of the fiducial object and the static satellite and the elevational angle of the static satellite are conveniently adjusted by using the reference pointer and the director, so that the satellite antenna can be installed in an optimal receiving state in a short time. Also, in the case of using the sun as the fiducial object, by applying the shadow forming means of the present invention, the azimuth angle of the satellite can be easily found without using the convention complicated direction apparatus. Also, when the celestial body is not observed well, the satellite can be easily directed by means of a relative azimuth angel with respect to a particular geographic object using the fiducial object director.
Therefore, without using a technical expert or expensive equipments, a user can directly install the satellite antenna so that the cost for installing the antenna can be remarkably reduced. When the direction of the antenna is changed after installation due to a misuse thereof or an external environment, a user can easily reset the antenna.
While this invention has been particularly shown and described with reference to preferred embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

What is claimed is:
1. A satellite antenna by a mode of calculating a relative position between a fiducial object and an artificial satellite, the satellite antenna comprising: a reflection plate for receiving and focusing radio waves transmitted from the artificial satellite; a reflection plate stand, vertically installed and connected to a rear surface of the reflection plate, for adjusting and fixing an azimuth angel and an elevational angle of the reflection plate; a feed horn unit, provided at one side of the reflection plate, for receiving the radio waves reflected by a reflection surface of the reflection plate; and a reference pointer coupled to the reflection plate stand at the rear side of the reflection plate to be capable of rotating to the left and right and being fixed to direct the reflection plate in a relative direction of a particular static satellite an installer desires with respect to the reflection plate set to direct the reflection plate toward the fiducial object.
2. The satellite antenna as claimed in claim 1, wherein the sun is set as the fiducial object, and the reference pointer comprises a reference pointer main body having a predetermined length and having a tip end that contacts a point of either left or right side of the rear surface of the reflection plate, a clamp for fixing the reference pointer main body by being coupled to the opposite end to the tip end of the reference pointer main body while encompassing the pole of the reflection plate stand, and a coupling screw for screwing or unscrewing the clamp to fix the reference pointer main body at the pole after an azimuth angle is set according to the relative position of the static satellite with respect to the fiducial object.
3. The satellite antenna as claimed in claim 2, wherein a fiducial object director formed linearly along a direction perpendicular to the reflection plate and capable of pivoting up and down is provided at a top portion of the reflection plate so that an installer rotating the reflection plate to the left and right match the reflection plate with a direction of a light ray of the sun while observing the direction of a light ray of the sun.
4. The satellite antenna as claimed in claim 2, wherein a through hole is formed in the fiducial object director along the lengthwise direction thereof so that the direction of a light ray of the sun is observed with the naked eye through a predetermined path.
5. The satellite antenna as claimed in claim 3, wherein the fiducial object director is formed to extend along a rail formed linearly to enable observation of the direction of a light ray of the sun with the naked eye and a pair of aiming protrusions are formed on the rail.
6. The satellite antenna as claimed in claim 3, wherein a separate satellite signal level meter for adjusting an elevational angle with respect to a particular static satellite is connected to the feed horn unit.
7. The satellite antenna as claimed in claim 3, wherein an angle meter is provided at a bracket of the rear surface of the reflection plate so that the reflection plate is fixed at a desired angle during pivoting up and down around a shaft pin hinge-coupled to the reflection plate stand.
8. The satellite antenna as claimed in claim 2, wherein a shadow forming means for determining whether an azimuth angle of the reflection plate is correctly set with respect to the sun by means of a degree of the length of a shadow of the reflection plate projected onto the reflection plate is installed at a predetermined position on a vertical center line at the front surface of the reflection plate.
9. The satellite antenna as claimed in claim 8, wherein the shadow forming means is an LNB arm connecting the feed horn unit and the reflection plate and disposed on the vertical center line of the reflection plate.
10. The satellite antenna as claimed in claim 9, wherein a separate satellite signal level meter for adjusting an elevational angle with respect to a particular static satellite is connected to the feed horn unit.
11. The satellite antenna as claimed in claim 9, wherein an angle meter is provided at a bracket of the rear surface of the reflection plate so that the reflection plate is fixed at a desired angle during pivoting up and down around a shaft pin hinge-coupled to the reflection plate stand.
12. The satellite antenna as claimed in claim 8, wherein the shadow forming means is a wire connecting a top portion of the reflection plate and a top portion of the feed horn unit.
13. The satellite antenna as claimed in claim 12, wherein marks are formed on the wire at an identical interval along the lengthwise direction, and a plumb hanging from a predetermined position of the marks in a vertical direction is provided so that an azimuth angle is adjusted by a degree of separation between a vertical string of the plumb and a lower end of the circumference of the reflection plate.
14. The satellite antenna as claimed in claim 8, wherein the shadow forming means is a fiducial object directing protrusion vertically installed to protrude on a vertical center line at the front side of the reflection plate.
15. The satellite antenna as claimed in claim 1, wherein a particular geographic object observed with the naked eye is set as the fiducial object, and the reference pointer comprises a reference pointer main body having a predetermined length and having a tip end that contacts a point of either left or right side of the rear surface of the reflection plate, a clamp for fixing the reference pointer main body by being coupled to the opposite end to the tip end of the reference pointer main body while encompassing the pole of the reflection plate stand, a coupling screw for screwing or unscrewing the clamp to fix the reference pointer main body at the pole after an azimuth angle is set according to the relative position of the static satellite with respect to the fiducial object, and a director formed linearly in a direction perpendicular to the reflection plate and capable of pivoting up and down is provided at a top portion of the reflection plate so that an installed match the reflection plate with the fiducial object with the naked eye while rotating the reflection plate to the left and right.
16. The satellite antenna as claimed in claim 15, wherein a through hole is formed in the fiducial object director in a lengthwise direction thereof to observe a particular geographic object through a predetermined path.
17. The satellite antenna as claimed in claim 15, wherein the fiducial object director is formed by being extended along a rail formed linearly to enable observation of a particular geographic object and a pair of aiming protrusions are formed on the rail.
18. The satellite antenna as claimed in claim 15, wherein a separate satellite signal level meter for adjusting an elevational angle with respect to a particular static satellite is connected to the feed horn unit.
19. The satellite antenna as claimed in claim 15, wherein an angle meter is provided at a bracket of thp rear surface of the reflection plate so that the reflection plate is fixed at a desired angle during pivoting up and down around a shaft pin hinge-coupled to the reflection plate stand.
20. A method of installing a satellite antenna by a mode of calculating a relative position between a fiducial object and an artificial satellite, the method comprising the acts of: adjusting a fiducial object direction angle of a reflection plate by rotating the reflection plate to the left and right around a reflection plate stand of the satellite antenna to match the direction of the reflection plate with the azimuth angle of the fiducial object; preliminarily adjusting a satellite azimuth angle of a reference pointer by calculating a value of a relative position between the fiducial object and a static satellite and pivoting the reference point contacting the rear surface of the reflection plate according to the calculated value to make the azimuth angle of the reflection plate match the direction of the static satellite, so that the reference point is primarily set to be suitable for the direction of the static satellite; adjusting a satellite azimuth angle of the reflection plate by rotating the reflection plate to the left and right around a vertically installed shaft of the reflection plate stand to the position where the reference pointer is fixed, so that the rear surface of the reflection plate contacts a tip end of the reference pointer; and adjusting a satellite elevational angle of the reflection plate by rotating the reflection plate up and down around an upper or lower portion standard point on a vertical center line of the reflection plate and fixing at an altitude corresponding to an elevational angle of the static satellite corresponding to a calculated value of the relative position between the fiducial object and the static satellite.
21. The method as claimed in claim 20, wherein, in the act of adjusting a fiducial object direction angle of a reflection plate, the azimuth angle is adjusted by rotating the reflection plate to the left and right while observing the fiducial object with the naked eye through an aiming path of a fiducial object director
22. The method as claimed in claim 20, wherein the sun is set as the fiducial object and, in the act of adjusting a fiducial object direction angle of a reflection plate, whether the azimuth angle of the reflection plate matches the direction of a light ray projected by the sun is recognized from the state of a shadow projected onto the reflection plate by a shadow forming means additionally provided on the vertical center line of the reflection plate so that the length of the shadow in the horizontal direction is adjusted to be the minimum.
23. The method as claimed in claim 20, wherein, in the act of adjusting fiducial object direction angle of the reflection plate, a wire having marks formed thereon is used and the azimuth angle of the reflection plate is adjusted to direct the reflection plate toward the sun from the state of a shadow of the wire projected onto the reflection plate.
24. The method as claimed in claim 20, wherein, in the act of preliminarily adjusting a satellite azimuth angle of the reference pointer, a point where the tip end of the reference pointer contacts the rear surface of the reflection plate is marked as a standard point in the state in which the reflection plate accurately directs the sun, the reference pointer contacting the rear surface of the reflection plate is rotated to the left and right as much as a satellite azimuth angle deviation with respect to the sun, and the reflection plate is rotated to the position of the reference pointer so that the tip end of the reference pointer matches the standard point indicated on the rear surface of the reflection plate.
25. The method as claimed in claim 20, wherein, in the act of adjusting a satellite elevational angle of the reflection plate, the satellite elevational angle is adjusted by matching a linear distance between a particular point of a pole for supporting the reflection plate and a particular point in the lower portion of the reflection plate with a value calculated from data.
26. The method as claimed in claim 20, wherein, in the act of adjusting a satellite elevational angle of the reflection plate, the elevational angle of the reflection plate is adjusted by matching a vertical string with the plumb with a lower end of the circumference of the reflection plate by hanging the plumb in a vertical direction from the position of a particular mark among marks of the wire calculated in consideration of the coordinates of the sun according to time and spatial conditions.
27. The method as claimed in claim 20, wherein a particular geographic object, a structure, or a building observed with the naked eye is set as the fiducial object and, in the act of adjusting a satellite azimuth angle of the reflection plate, one of the fiducial objects located in the same direction as the azimuth angle to a particular static satellite from the satellite antenna is selected and the angle is adjusted so that the fiducial object director installed at a top portion of the reflection plate directs the selected fiducial object.
PCT/KR2001/001821 2000-10-26 2001-10-26 Satellite antenna by calculation mode of opposite position between fiducial object and artificial satellite and installation method thereof WO2002039546A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2002214344A AU2002214344A1 (en) 2000-10-26 2001-10-26 Satellite antenna by calculation mode of opposite position between fiducial object and artificial satellite and installation method thereof

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
KR1020000063322A KR20020032253A (en) 2000-10-26 2000-10-26 Satellite antenna installed using astronomical object and its installation method
KR2000/63322 2000-10-26
KR2000/63828 2000-10-28
KR2000/63829 2000-10-28
KR1020000063829A KR20020032997A (en) 2000-10-28 2000-10-28 Satellite antenna and its installation method using relative position between astronomical object and satellite
KR1020000063828A KR20020032996A (en) 2000-10-28 2000-10-28 Satellite antenna and installation method using relative position of astronomical object and satellite
KR1020000078866A KR20020049657A (en) 2000-12-19 2000-12-19 Satellite antenna with installation means and installation method
KR2000/78866 2000-12-19

Publications (1)

Publication Number Publication Date
WO2002039546A1 true WO2002039546A1 (en) 2002-05-16

Family

ID=27483484

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2001/001821 WO2002039546A1 (en) 2000-10-26 2001-10-26 Satellite antenna by calculation mode of opposite position between fiducial object and artificial satellite and installation method thereof

Country Status (3)

Country Link
KR (2) KR20030044054A (en)
AU (1) AU2002214344A1 (en)
WO (1) WO2002039546A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102683885A (en) * 2012-04-28 2012-09-19 深圳光启创新技术有限公司 Portable satellite antenna and satellite antenna receiving system
CN103064429A (en) * 2012-12-07 2013-04-24 北京爱科迪信息通讯技术有限公司 Satellite finding device and adjustment method thereof
JP2014135570A (en) * 2013-01-08 2014-07-24 Chugoku Electric Power Co Inc:The Radio-wave propagation path inspection device
CN115061153A (en) * 2022-05-17 2022-09-16 南京航空航天大学 Small satellite signal receiving plate adjusting device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1168680A (en) * 1997-08-25 1999-03-09 Nec Corp Display device for satellite broadcast reception state
KR19990038457U (en) * 1998-03-25 1999-10-25 구관영 Portable satellite receiver antenna with integrated compass-level
KR20000056384A (en) * 1999-02-19 2000-09-15 권중철 Aaaaa

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1168680A (en) * 1997-08-25 1999-03-09 Nec Corp Display device for satellite broadcast reception state
KR19990038457U (en) * 1998-03-25 1999-10-25 구관영 Portable satellite receiver antenna with integrated compass-level
KR20000056384A (en) * 1999-02-19 2000-09-15 권중철 Aaaaa

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102683885A (en) * 2012-04-28 2012-09-19 深圳光启创新技术有限公司 Portable satellite antenna and satellite antenna receiving system
CN102683885B (en) * 2012-04-28 2015-03-11 深圳光启创新技术有限公司 Portable satellite antenna and satellite antenna receiving system
CN103064429A (en) * 2012-12-07 2013-04-24 北京爱科迪信息通讯技术有限公司 Satellite finding device and adjustment method thereof
JP2014135570A (en) * 2013-01-08 2014-07-24 Chugoku Electric Power Co Inc:The Radio-wave propagation path inspection device
CN115061153A (en) * 2022-05-17 2022-09-16 南京航空航天大学 Small satellite signal receiving plate adjusting device

Also Published As

Publication number Publication date
KR20030064407A (en) 2003-07-31
AU2002214344A1 (en) 2002-05-21
KR20030044054A (en) 2003-06-02

Similar Documents

Publication Publication Date Title
TWI257732B (en) Antenna carrier which allows minor adjustments of its orientation angle
US6366253B1 (en) Satellite antenna alignment device
US6686889B1 (en) Method and apparatus for antenna orientation and antenna with the same
US6445361B2 (en) Dish antenna rotation apparatus
US5657031A (en) Earth station antenna system
US7724198B2 (en) System and method for path alignment of directional antennas
US20040263418A1 (en) Radio wave lens antenna apparatus
US20050003873A1 (en) Directional indicator for antennas
US5434586A (en) Multibeam antenna for receiving satellite waves
US20060262031A1 (en) Radiowave lens antenna device
US10199713B2 (en) Systems, devices, and methods for orienting an antenna mast
US6933903B2 (en) Receiving signals from plural satellites in one antenna
WO2002039546A1 (en) Satellite antenna by calculation mode of opposite position between fiducial object and artificial satellite and installation method thereof
US6208315B1 (en) Antenna for reception of satellite broadcast
US7091922B2 (en) Laser alignment apparatus and method
JP3945491B2 (en) Radio wave lens antenna device
JP2005236426A (en) Aperture antenna and antenna direction adjustment method
WO2002035649A1 (en) Lnb holder for satellite antenna
JPH0572763B2 (en)
GB2227609A (en) Double aerial [daerial]
JPH0722836A (en) Parabolic antenna device and radio reception method
KR20000065651A (en) Satellite antenna coupled to angle measurement device and mounting method of the same
JP3300860B2 (en) Antenna device and receiving method
JPH1022712A (en) Method and device for adjusting azimuth angle of satellite reception antenna
JPH0697711A (en) Satellite broadcast transmission/reception antenna

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CR CU CZ DE DK DM DZ EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT TZ UA UG US UZ VN YU ZA ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
WWE Wipo information: entry into national phase

Ref document number: 1020037005850

Country of ref document: KR

Ref document number: 1020037005859

Country of ref document: KR

WWP Wipo information: published in national office

Ref document number: 1020037005850

Country of ref document: KR

WWP Wipo information: published in national office

Ref document number: 1020037005859

Country of ref document: KR

REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

122 Ep: pct application non-entry in european phase
NENP Non-entry into the national phase

Ref country code: JP