JPH01129506A - Satellite radio wave arrival confirming device - Google Patents

Abstract

PURPOSE:To confirm the arrival direction of a radio wave from a satellite by using a simple device by providing an azimuth magnet, and a pair of position marks provided on an optical path, when a light beam from the arrival direction of a satellite radio wave indicated by an indicating plate and a pointer is made incident on a reflecting mirror. CONSTITUTION:An azimuth magnet 20 is provided with a cylindrical magnet case 21, and a disk-like magnet disk 22 which is provided so as to be freely rotatable in the magnet case 21 and magnetized, a map 23 is entered into the magnet disk 22, and in the map 23, plural pieces of equal angle lines 24 are entered so that areas facing a broadcast satellite at the same azimuth are arranged on one line, and the end part of the equal angle line 24 is connected to a scale 25 formed on the peripheral part of the magnet disk 22 in accordance with its azimuth. In a suitable place of a case body 11, an arc-like curved indicating plate 31 is fixed to the periphery of a screw axis of the case body 11 and a cover body 12, and in the cover body 12, a pointer 32 is fixed to a part corresponding to the indicating plate 31. In the part opposed to a reflecting mirror 40 in the cover body 12, a V-shaped position mark 41 is formed, and cooperates with a position mark 43 of the reflecting mirror 40, by which a collimator is formed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field 1] The present invention mainly relates to a satellite radio wave arrival confirmation device used to confirm whether or not satellite broadcast radio waves can be received.

[Background technology 1] In general, the radio waves used for satellite broadcasting are weak and have a high propensity to travel in a straight line. It is necessary to check whether there are any obstacles.

As methods for doing this, the following two methods are conventionally known.

That is, the first method uses a map that indicates the azimuth and elevation angles from which the broadcasting satellite is viewed from each region, determines the azimuth and elevation angles of the construction site on the map, and uses a compass, level, and angle. There are ways to make geographical measurements using meters, tape measures, transits, etc.

With this method, it is not very difficult to determine the azimuth and elevation angles and set the antenna direction, but large-scale equipment such as transint is required to check whether there are obstacles in the direction of the antenna. In addition, calculations are required, and in complex geographical areas, it takes a considerable amount of time to determine the installation location.

A second method is to install the device at a location where maximum sensitivity can be obtained while actually receiving satellite broadcast radio waves. In this case, you can adjust it to get the best reception.
The direction of the antenna will be adjusted in the same way as the first method using a map, a compass, and an angle meter. However, since it is not possible to confirm whether there are any obstacles in the line-of-sight (L) where the antenna looks at the satellite, it is necessary to determine the location of the antenna through trial and error in order to obtain the maximum sensitivity. It has become quite expensive.

[Object of the Invention 1 The present invention has been made in view of α mentioned in -L,
The purpose of this is to use a simple device to confirm the arrival direction of radio waves from a satellite, as well as to confirm the presence or absence of obstacles in line-of-sight -1. Our goal is to provide the following.

[Disclosure of the Invention 1 (Structure) A satellite radio wave arrival confirmation device according to the present invention includes a compass bearing having a notation that clearly recognizes the azimuth angle of the arrival direction of the satellite radio wave;
An indicator board with an inscription for confirming the angle of elevation of the direction of arrival of satellite radio waves, an indicator board that is swingable on the indicator board and can be folded to indicate the angle of elevation with the inscription above, and an indicator board and a pointer. a reflector whose device relationship is fixed to one side;
It is equipped with a pair of position marks arranged on the optical path when the light ray from the arrival direction of the satellite radio wave indicated by the direction magnet, the indicator plate and the pointer enters the reflecting mirror, The azimuth angle is determined by a compass, the elevation angle is determined by an indicator board and a pointer, and the reflector and position mark make it possible to check whether there is an obstacle in the desired direction.

(Example) As shown in FIG. 1, the case 10 includes a thin box-shaped case body 11 with an opening on the -L side, and a case body 11 that is hinged to one side edge of the case body 11 and can be opened and closed with respect to the case body 11. The broken lid body 1
It consists of 2. A compass 20 is housed in the case body 11.

The compass 20 has a cylindrical magnet case 21 and a disc-shaped magnet disc 22 that is rotatably disposed and magnetized within the magnet case 21. A map 23 is filled in as shown. Map 23 shows the third
As shown in the figure, multiple equiangular lines 24 are drawn so that areas facing the broadcasting satellite at the same azimuth are lined up on one line, and the ends of the equiangular lines 24 are drawn according to the azimuth. The scale 25 is continuous with the scale 25 formed on the circumference of the magnet disk 22. Here, the azimuth is set with north as the reference.

By the way, in Japan, a westward angle of 212 to 228 degrees satisfies almost all areas. An instruction mark 26 is provided at a suitable location on the magnet case 21 near the lid 12.

However, the magnet circle fi22 rotates according to the azimuth, and the azimuth is indicated by the indicator marker 726.

The case body 11 and the lid body 12 are placed at appropriate locations on the case body 11.
An indicator plate 31 curved in an arc shape is fixed around a hinge shaft of the lid body 12, and a pointer 32 is attached to the lid body 12 at a portion corresponding to the indicator plate 31.
is fixed. Therefore, as the main body 12 is opened and closed, the pointer 32 swings on the indicator plate 31, and the lid body 12
It shows the position according to the opening/closing angle. A map 33 is written on the instruction board 31, and on the map 33, as shown in FIG. 34 has been filled in. However, the angle of elevation can be indicated on the indicator board 31 using the pointer 32.

The case body 1 is connected to the connection part between the case body 11 and the lid body 12.
A reflecting mirror 40 is fixed so as to maintain a constant angle with respect to the bottom surface of the mirror 1. A 7-shaped position mark 43 is written at a proper location on the reflecting mirror 40, and a linear orientation mark 44 is also written as the center line of the V-shape of the position mark 43. Furthermore, an elliptical range mark 42 is written around the position mark 43. A reflecting mirror 40 in the lid body 12
A V-shaped position mark 41 is formed at a portion facing the mirror 40, and forms a sight in cooperation with the position mark 43 of the reflecting mirror 40. That is, when looking at the reflector 40 from the position mark 41 side so as to connect the apex of the V-shape of the position mark 41 and the V-shape of the position mark 43, there is a Since only objects existing on a straight line forming a constant angle with respect to the surface of the reflecting mirror 40 are reflected, it is possible to aim using the surface position marks 41 and 43. Here, surface position mark 41.4
Direction mark 4 is placed in a plane that includes the straight line connecting the vertices of the V-shape 3 and the reflected light due to the reflection @40 of the light ray passing on the straight line.
The positional relationship is set such that 4 and the instruction mark 26 are positioned. Further, the angle made by the reflected light with respect to the horizontal plane is set so as to match the elevation angle indicated by the pointer 32 on the indicator plate 31. This is generally accomplished by placing the device on a horizontal surface of the structure. In other words, since the horizontal plane of a structure is generally set to approximately the correct level using a spirit level, this can be used. If this is not possible, you may also use a spirit level. The reflecting mirror 40 is foldable, and the lid 12 can be closed to the case body 11.

Next, the principle of the present invention will be explained based on the principle diagram shown in FIG. Here, the position mark 41 is provided on the side opposite to the eye with respect to the reflecting mirror 4o, but the surface position mark 41
．． 43 can produce the same effect if they are located apart on the optical path connecting the eye and the satellite. Now, assuming that the positional relationship is as shown in Figure 4, a beam of light in the direction in which radio waves from satellite A arrive is reflected by a reflecting mirror and enters the eye located at point D, and the optical path is Assume that there are surface position marks 41 and 43 at . In other words, the satellite is located on the optical path on the reflecting mirror 40 where the surface position marks 41.4.3 match. Therefore, if there are no obstacles on this optical path, the radio waves transmitted from the satellite can be reliably received, and if there is an obstacle, the reflector 4
0, so you can easily tell if there are any obstacles. In other words, in the example shown in FIG. 4, since the building 3 is off the optical path, its image 3'
3, but since the tree 4 is located on the optical path, its image 4' will be reflected on the reflecting mirror 40 near the position mark 43. In other words, the tree 4 has become an obstacle, making it necessary to change the construction site. Here, the range mark 42 is formed in order to set an allowable range of error in consideration of the slight deviation of the actual construction location from the measurement location and measurement errors. That is, if there are no obstacles within the range mark 42, some error is tolerated, and it becomes easier to construct the antenna without obstacles in the line of sight.

However, when actually using the device, the compass 2
Search for the vicinity of the construction point from the map 23 written on the instruction board 31 and match the azimuth of that point with the indication mark 26.6 At the same time, search for the vicinity of the construction point from the map 33 written on the instruction board 31 and match the azimuth of that point with the direction mark 26. Adjust the N angle of the lid J2 so that the pointer matches the elevation angle of . In this state, look at the position mark 43 of the reflecting mirror 40 from the position mark 41 side, and make sure that the range mark 42
The installation location can be determined by checking that there are no obstacles in the image.

All you have to do is install the antenna at the installation location determined in this way, and adjust the direction of the antenna according to the indicated azimuth and elevation angle.

[Effects of the Invention] As described above, the present invention includes a compass magnet with a notation for confirming the azimuth angle of the direction of arrival of satellite radio waves, an indicator board with a notation for confirming the elevation angle of the direction of arrival of satellite radio waves, A pointer that is swingable with respect to the indicator board and indicates the angle of elevation according to the above notation, a reflector whose positional relationship is fixed with respect to either the indicator board or the indicator, a direction magnet, the indicator board, and It is equipped with a pointer and a pair of position marks that are placed on the optical path of the light beam from the direction of arrival of the satellite radio wave indicated by the reflector, and the azimuth angle is determined using a compass. At the same time, the angle of elevation can be determined using the indicator board and pointer, and the reflector and position mark can also be used to check whether there is an obstacle in the desired direction. This has the advantage that the orientation and installation location of the antenna can be easily determined.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing an embodiment of the present invention, Fig. 2 is a front view of main parts showing a compass used in the above, Fig. 3 is a front view of main parts showing an indicator plate used in the same, Fig. 4 is a diagram explaining the principle of the same 1=. 20 is a compass, 23 is a map, 31 is an indicator board, 32 is a pointer, 33 is a map, 40 is a reflector, 41° and 43 are position marks. Agent Patent Attorney Ishi 1) Chief 7 Procedures Amendment (Voluntary) 1. Display of the case 1988 Patent N288244 2, Name of the invention Satellite radio wave arrival confirmation device 3, Person making the amendment Relationship to the case Patent applicant address Address 1048 Kadoma, Kadoma City, Osaka Prefecture Name (58
3) Matsushita Electric Works Co., Ltd. Representative Sadao Fujii 4 Agent postal code 530 Address 1-12-17 Umeda, Kita-ku, Osaka □□1 5 Date of amendment order Voluntary 6 Inventions increased by amendment Number: None [1] "Gyonatsuu J" on page 2, line 18 of the specification of the present application is corrected to "Jyodo." [2] "Figure 3" on page 5, lines 10 and 11 of the same page
is corrected as "Figure 2". [3] "With respect to the bottom surface of the case body 11" in lines 16 and 17 of page 6 of the same as "with respect to the bottom surface of the lid body 12"
I am corrected. [4] Delete lines 8 and 9 on page 7, and insert the following sentences. [] so that the vertices of [
When viewing the position mark 41 reflected at 0, the position mark 43
[5] Delete lines 9 to 13 on page 8 of the same page and insert the following sentence. ``Let me explain further.The position marker 241 is provided on the opposite side of the reflector 40.It is now positioned as shown in Figure 4.'' Agent Patent Attorney Ishi 1) Choshichi

Claims (2)

[Claims] (1) A compass with markings to confirm the azimuth angle of the direction of arrival of satellite radio waves, an indicator board with markings to confirm the elevation angle of the direction of arrival of satellite radio waves, and a magnet that can swing freely relative to the indicator board. a pointer that indicates the angle of elevation according to the above notation, a reflector whose positional relationship is fixed with respect to either the pointer or the pointer, and the direction of arrival of the satellite radio waves indicated by the compass, the pointer, and the pointer. 1. A satellite radio wave arrival confirmation device comprising: a pair of position marks disposed on a light path when a light beam from the mirror enters a reflecting mirror; (2) The markings on the compass and indicator board are maps, and each area on the map is associated with an azimuth and an elevation angle at which the satellite is viewed from that area. Satellite radio wave arrival confirmation device described in section.