JPH11284432A - Main reflection mirror face adjusting device and method for satellite communication antenna - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily and speedily adjust the mirror face of a main reflection mirror by using a laser diode and a regular theodolite, which are positioned to be away from each other by a known distance on the same vertical axis. SOLUTION: For a laser light 1, an elevation angle is made to face the mirror face adjusting point 4 of a main reflecting mirror 3, an angle is adjusted to an elevation angle θL, and a mirror face adjusting point 4 is irradiated with laser beams. When the mirror face adjusting point 4 of the main reflecting mirror 3 is adjusted to a correct position, the irradiation point of the laser beam on the main reflecting mirror 3, which is radiated by the laser theodolite 1, is matched with the mirror face adjusting point 4. When the irradiation point is measured by a theodolite 2, an elevation angle θTi from the vertical axis being a design value is measured. When the mirror face adjusting point 4 is not adjusted to the correct position, although the irradiation point of the laser beam differs from the mirror face adjusting point 4, when the irradiation point is measured by the theodolite 2, an elevation angle θTi different from the correct elevation angle θTi is measured. Then, the fact that the mirror face adjusting point 4 is not adjusted to the correct position is easily recognized.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an adjusting device and an adjusting method for adjusting a mirror surface of a main reflector of a satellite communication antenna.

[0002]

2. Description of the Related Art A conventional method for adjusting a mirror surface of a main reflector of a satellite communication antenna uses a reference point for distance measurement in order to determine a mirror surface adjustment point 4 of a main reflector 3 as shown in FIG. A point on the main reflecting mirror surface at which the distance from 6 is equal to the design value L is put on the main reflecting mirror surface, and the inscribed point is referred to as theodolite 2.
The main reflection mirror adjusting screw 5 is used to adjust the measured elevation angle θ _Tr from the vertical axis so as to be within the standard.

Next, the above adjusting method will be described with reference to a flowchart shown in FIG.

First, in step S11, in order to determine the mirror surface adjustment point 4 of the main reflecting mirror 3, "mark" is applied to a point on the main reflecting mirror surface at which the distance from the reference point 6 of the distance measurement becomes the set value L. Put in.

[0005] Next, the point injured in step S12 is measured by theodolite 2.

Next, at step S13, it is determined whether or not the measured elevation angle θ _Tr from the vertical axis is within the standard. If the elevation angle θ _Tr is within the standard, the process is terminated.

If the result of the determination in step S13 is that the standard is not met, the process proceeds to step S14, where the adjustment is performed using the main reflector adjusting screw 5, and the above-mentioned step S11 is performed again.
Steps S13 to S13 are repeated.

However, the problem with the conventional method described above is that when the elevation angle θ _Tr measured by the theodolite 2 does not _{fall within the} standard value, the main reflection mirror adjustment screw 5 is used to adjust the mirror surface adjustment point. When the readjustment of step 4 is performed, the previously injured point also moves. Therefore, when the readjustment of the mirror surface is performed, the scribing is usually performed again before the measurement with the theodolite 2.

[0009]

As described above, when there are a large number of mirror adjustment points, such as a satellite communication antenna, it takes a great deal of labor and time only to put "marking" on the measurement points. In need.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned circumstances, and has been made in order to solve the above-mentioned problems inherent in the prior art. In the adjustment, a satellite that enables easy and quick adjustment of the mirror surface of the main reflector by using a laser theodolite and a normal theodolite installed at a known distance on the same vertical axis It is an object of the present invention to provide a novel main reflecting mirror surface adjusting device for a communication antenna and an adjusting method thereof.

[0011]

In order to achieve the above-mentioned object, a main reflector mirror adjusting device for a satellite communication antenna according to the present invention is designed so that an elevation angle is directed to a mirror adjusting point of the main reflector. A laser theodolite that irradiates a laser beam toward the mirror surface adjustment point of the main reflecting mirror after being adjusted to an elevation angle θ _L from a vertical axis, and the laser theodolite on the same vertical axis as the laser theodolite. A theodolite arranged at a predetermined distance and measuring the irradiation point of the laser theodolite to determine an elevation angle θ _Ti from the vertical axis, which is a design value, and adjusting the mirror surface of the main reflecting mirror. Be composed.

[0012] The laser theodolite is arranged above the theodolite on the same vertical axis.

The laser theodolite is disposed below the theodolite on the same vertical axis.

Further, the method for adjusting the mirror surface of the main reflector of the satellite communication antenna according to the present invention is characterized in that the elevation angle of the laser theodolite is directed to the mirror surface adjustment point of the main mirror to the elevation angle θ _L from the vertical axis which is a design value. And then irradiate a laser beam from the laser theodolite towards the mirror adjustment point,
Next, the irradiation point of the laser beam is measured for the elevation angle by theodolite, and it is determined whether or not the measured elevation angle θ _Tr is within the standard of the elevation angle θ _Ti from the vertical axis which is the design value. If it does, it ends, if it does not meet the standard, adjust using the main reflector adjustment screw, adjust the mirror surface by measuring the irradiation of the laser beam again with the theodolite I have.

Still further, the method for adjusting the main reflector of a satellite communication antenna according to the present invention is a laser reflector and a method of adjusting the reflector which uses a theodolite, wherein the laser theodolite is positioned from a vertical axis which is a design value. The theodolite is adjusted to the elevation angle θ _Ti from the vertical axis, which is a design value, to the elevation angle θ _L , and the irradiation point of the laser theodolite can be collimated by the theodolite, and the main reflection mirror is adjusted by the main reflection mirror adjusting screw. The feature is that the mirror surface is adjusted.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a preferred embodiment of the present invention will be described in detail with reference to the drawings.

[Structure of Embodiment] FIG. 1 is a schematic diagram showing an embodiment of the present invention.
FIG. 2B is an enlarged view (a front view and a side view) of a main reflecting mirror adjusting screw shown in FIG. 1.

Referring to FIG. 1, reference numeral 1 denotes a laser theodolite, and 2 denotes a theodolite. One embodiment of the present invention is a laser installed at a known distance on the same vertical axis. It includes theodolite 1 and theodolite 2.

[Operation of Embodiment] FIGS. 1 and 2A,
The operation of the present embodiment will be described with reference to FIG.

The laser theodolite 1 directs the laser beam to the mirror surface of the main reflecting mirror 3 after the angle of elevation is directed to the mirror surface adjusting point 4 of the main reflecting mirror 3 and the angle is adjusted to an elevation angle θ _L from the vertical axis which is a design value. Irradiation is performed toward adjustment point 4.

When the mirror surface adjustment point 4 of the main reflecting mirror 3 is adjusted to an ideal position as designed, the irradiation point of the laser beam on the main reflecting mirror 3 irradiated by the laser theodolite 1 When this irradiation point is measured on the same vertical axis by the theodolite 2 installed at a known distance from the laser theodolite 1, the elevation angle from the vertical axis which is a design value is obtained. θ _Ti is measured.

If the mirror surface adjustment point 4 of the main reflecting mirror 3 is not adjusted to an ideal position as designed, the irradiation point of the laser beam on the main reflecting mirror 3 irradiated by the laser theodolite 1 Is different from the mirror surface adjustment point 4, but when this irradiation point is measured with the theodolite 2, an elevation angle θ _Tr different from the design value of the elevation angle θ _Ti from the vertical axis is measured, and the mirror surface adjustment point 4 is It can be easily confirmed that the position is not adjusted to the ideal position.

If the mirror adjustment point 4 is not adjusted to an ideal position as designed, the mirror adjustment point 4 is adjusted with the main reflecting mirror adjustment screw 5, and then the irradiation point is again adjusted with the theodolite 2. It is only necessary to measure and confirm that the measured elevation angle θ _Tr satisfies the standard value. Next, an example of an operation flow according to the present invention will be described in detail with reference to FIG.

FIG. 3 is a flowchart showing an example of the operation flow of the present invention.

Referring to FIGS. 1 to 3, first, in step S1 of FIG. 3, the elevation angle of the laser theodolite 1 is directed toward the mirror surface adjustment point 4 of the main reflecting mirror 3, and the elevation angle .theta. Adjust the angle to _L.

Next, in step S 2, a laser beam is emitted from the laser theodolite 1 toward the mirror surface adjustment point 4 of the main reflecting mirror 3.

Next, in step S3, the irradiation point of the laser beam is measured by the theodolite 2.

Subsequently, in step S4, it is determined whether or not the measured elevation angle θ _Tr from the vertical axis is within the standard. If the result of this determination is that the elevation angle θ _Tr is within the standard, the process ends.

If it is determined in step S4 that the measured elevation angle θ _Tr from the vertical axis is not included, step S4 is executed.
Then, in step S5, adjustment is performed using the main reflecting mirror adjustment screw 5, and the operations in steps S3 and S4 are performed again.
These operations are repeated until the operation is completed.

[Another Embodiment of the Invention] In FIG. 1, the laser theodolite 1 is installed above and the theodolite 2 is installed below, but as another embodiment of the present invention,
The laser theodolite 1 can be placed down and the theodolite 2 up, and the same effect as in the embodiment shown in FIG. 1 can be obtained even in such a reverse arrangement.

When the mirror adjustment point is measured with a laser theodolite and a theodolite as in the present invention, as a main reflecting mirror mirror adjustment method, the laser rheolite is adjusted to an elevation angle θ _L from a vertical axis which is a design value. , The theodolite is adjusted to the design angle of elevation θ _Ti from the vertical axis,
It is also possible to adjust the mirror surface with the main reflector adjusting screw so that the irradiation point of the laser theodolite can be collimated by the theodolite.

[0032]

As described above, according to the mirror surface adjusting apparatus and the adjusting method according to the present invention, the irradiation point of the laser beam from the laser theodolite directed to the specified elevation angle to the main reflecting mirror is the same as that of the laser theodolite. It is only necessary to measure with a theodolite installed at a known distance on the vertical axis of the sensor.
Since no mirror is required, it is possible to greatly reduce the labor and time required for the mirror surface adjustment operation.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram showing an embodiment according to the present invention.

FIG. 2A is an enlarged front view showing a part of a main reflector adjusting screw, and FIG. 2B is a side view thereof.

FIG. 3 is a flowchart illustrating an example of an operation flow according to an embodiment of the present invention;

FIG. 4 is a schematic configuration diagram of a conventional technique.

FIG. 5 is an operation flowchart of a conventional technique.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Laser theodolite 2 ... Theodolite 3 ... Main reflector 4 ... Mirror adjustment point 5 ... Main reflector adjustment screw 6 ... Reference point of distance measurement

Claims (5)

[Claims] The laser beam is directed to the mirror surface adjusting point of the main reflecting mirror after the elevation angle is directed to the mirror surface adjusting point of the main reflecting mirror and is adjusted to an angle of elevation θ _L from a vertical axis which is a design value. The laser theodolite to be illuminated, and the laser theodolite is arranged on the same vertical axis as the laser theodolite at a predetermined distance from the laser theodolite, and measures the irradiation point of the laser theodolite from the vertical axis which is a design value. And a theodolite that adjusts the mirror surface of the main reflecting mirror by calculating the elevation angle θ _Ti of the main reflecting mirror of the satellite communication antenna. 2. The apparatus according to claim 1, wherein the laser theodolite is disposed above the theodolite on the same vertical axis. 3. The mirror reflector adjusting device for a satellite communication antenna according to claim 1, wherein the laser theodolite is disposed below the theodolite on the same vertical axis. 4. The elevation angle θ _L from the vertical axis, which is a design value, is set so that the elevation angle of the laser theodolite is directed toward the mirror surface adjustment point of the main reflecting mirror.
Then, the laser beam is irradiated from the laser theodolite toward the mirror adjustment point, and then the irradiation point of the laser beam is measured for the elevation angle by theodolite, and the measured elevation angle θ _Tr is a design value. Judge whether the angle of elevation θ _Ti from a certain vertical axis is within the standard, if it is within the standard, end it, if not, adjust using the main reflector adjustment screw, A method for adjusting a mirror surface of a main reflector of a satellite communication antenna, wherein the mirror surface is adjusted by measuring the irradiation point of the laser beam again with the theodolite. 5. A laser theodolite and a method for adjusting a mirror surface using a theodolite, wherein the laser theodolite is at an elevation angle θ _L from a vertical axis which is a design value, and the theodolite is at an elevation angle θ from a vertical axis which is a design value. _The satellite communication antenna is characterized in that, in accordance with _Ti , the irradiation point of the laser theodolite can be collimated by the theodolite, and the mirror surface of the main reflector is adjusted with the main reflector adjustment screw. Reflector mirror surface adjustment method.