JPS63293476A - Radio wave measurement system - Google Patents

Abstract

PURPOSE:To accurately measure a radio wave by using electric field intensity corresponding to antenna position information from an antenna driving means and electric field intensity corresponding to a frequency band. CONSTITUTION:An antenna driving device 12 directs a directional antenna 10 in a desired direction and a received radio wave is inputted to a switch 14. The switch 14 inputs either of this received radio wave or a standard signal from a microwave signal generating device 16 to the input terminal C of a switch 18 or a low-noise amplifier 20. The output of the amplifier 20 is inputted to the input terminal E of the switch 18, which inputs one of the input signals to a spectrum analyzer 22 to measure a specific frequency or electric field intensity in the specific frequency band. A control arithmetic processor 30 drives and controls the device 12 and also perform specific arithmetic processing according to data inputted from an analyzer 22, a microwave wattmeter 24, and a frequency meter 26 and various constants inputted from an input device 32a, thereby accurately and easily measuring the radio wave corresponding to the antenna position or frequency.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a radio wave measurement system, and particularly to a radio wave measurement system that measures the intensity of radio waves.
The present invention relates to a radio wave measurement system suitable for making measurements in correspondence with accurate position information and frequency of an antenna.

[Conventional technology]

In recent years, the number of wireless stations has continued to increase, and radio waves, which are a limited resource, are becoming extremely crowded. For this reason, interference such as interference tends to occur frequently, and it is important to check for interference waves before installing a wireless station.

In particular, radio waves from communication satellites are extremely weak and susceptible to interference, so when choosing a location to install a ground station,
It has become essential to check in advance for the presence of interference.

In addition, it is well known that in large cities, there are many high-rise buildings, and radio waves such as television and radio broadcasts are blocked or reflected, causing reception problems such as ghosts in various places. It is. Therefore, when constructing a high-rise building, we measure each broadcast radio wave before construction, and also measure each broadcast radio wave after construction to understand the impact of the constructed high-rise building and to take measures in case there is a negative impact. As explained above, the need for radio wave measurement is increasing.

Conventionally, the radio wave measurement described above involves transporting the necessary measurement equipment to a measurement point, performing measurements after making connections between the measurement equipment at that measurement point, and tabulating the measurement results after the measurement is completed. .

[Problem that the invention seeks to solve]

However, the conventional radio wave measurement technology described above has a complicated equipment configuration, requires specialized knowledge to connect equipment and perform measurement operations, and requires skill to perform accurate measurements. There was a problem in that it took time to compile the results.

An object of the present invention is to solve the above-mentioned problems and provide a radio wave measurement system that can perform simple and accurate radio wave measurement and data aggregation.

[Means for solving problems]

The radio wave measurement system according to the present invention that achieves the above object is as follows:
An antenna for receiving radio waves, an antenna driving means capable of controlling the attitude of the antenna and outputting position information of the antenna, and a measurement capable of capturing radio waves from the antenna and measuring the electric field strength of a specific frequency and a specific frequency band. and the antenna driving means can be driven and controlled, and the antenna position information from the driving means and the measurement data from the measuring means are taken in to obtain an electric field strength corresponding to the antenna position information and an electric field strength corresponding to the frequency band. It is characterized by comprising a control calculation processing means.

[For production]

The attitude of the antenna is controlled by antenna driving means.

The antenna driving means is driven and controlled by the control calculation processing means, and its position information is provided to the processing means.

The antenna is oriented in a certain direction, the electric field strength in a specific frequency range is measured, and this is fed to the processing device to measure the specific frequency range and the state of the radio waves in correspondence.

Additionally, the attitude of the antenna is controlled and the antenna position and radio wave condition are correlated and measured.

〔Example〕

Embodiments of the present invention will be described below based on the drawings.

1 to 7 show a first embodiment of the present invention,
Figure 1 is a block diagram of an embodiment of the radio wave measurement system, Figure 2
The figure is a flowchart for explaining the overall operation of the same embodiment, Figure 3 is a flowchart for explaining the operation of frequency axis measurement, and Figure 4 shows the measurement results obtained by the frequency axis measurement of Figure 3. 5 is a flowchart for explaining the operation of the angular axis measurement, and FIG. 6 is a characteristic diagram showing the measurement results obtained by the angular axis measurement of FIG. 5.
FIG. 7 is a flowchart for explaining the frequency/angle measurement operation.

The radio wave measurement system shown in Figure 1 is approximately 1 (GHz
) The above radio waves are used for radio wave measurements along the frequency and angle axes, and are configured as follows. That is, a directional antenna 10, such as a parabolic antenna or a Cassegrain antenna, which receives radio waves, is attached to a movable part of an antenna driving device 12, and the antenna driving device 12 directs the antenna 10 in a desired direction. It is designed so that it can be used. The antenna 10 is connected via a high frequency line to a first switch 14 whose configuration is shown in principle.
The antenna 10 is connected to the antenna 10 to supply the radio waves received by the antenna 10 to the first switching device 14.

This first switch 14 includes the microwave signal generator 1
The standard signal from 6 is supplied.

The first switching device 14 transfers either the received signal from the antenna 10 or the standard signal from the microwave signal generator 16 to a second switching device whose configuration is shown in principle. This is a device for supplying the signal to the input terminal (C) of the low noise amplifier 20 or the input terminal of the low noise amplifier 20. Further, the output terminal of the low noise amplifier 20 is connected to the other input terminal (E) of the second switch 18.
It is connected to. The second switch 18 is a device that selects and outputs one of the input signals, and the output end of this switch 18 is a measuring means that can measure the electric field strength of a specific frequency or a specific frequency band. The signal from the second switch 18 is connected to the input end of the spectrum analyzer 22 as the spectrum analyzer 22.
It is possible to supply it to.

The output of the microwave signal generator 16 is connected to the third switch 3
7 to be input to either the microwave power meter 24, the frequency meter 26, or the first switch 14,
It is now used to calibrate measurement systems. The outputs of the microwave power meter 24 and frequency meter 26 for calibrating the spectrum analyzer 22° are input to a control calculation processing bag W30. The control arithmetic processing device 30 is configured with a micro combinator system, which controls the drive of the antenna drive device 12 and the first switch 14.
and controls the switching of the second switch 18 and the third switch 37, and also controls the spectrum analyzer 22. It is configured to perform predetermined arithmetic processing based on data taken in from a microwave wattmeter 24 and a frequency meter 26 and various constants entered manually from an input device to be described later. The control processing unit 12 includes a man-machine interface 32 consisting of a CRT display 32a and a keyboard input device 32b, a thermal printer 34 for output, a dot printer 36, and an X-Y block 38 for drawing. A floppy disk device 39 as an external storage device is connected.

The operation of the embodiment configured as described above is illustrated in FIGS. 1 to 7.
Have fun while referring to the diagram.

In FIG. 2, the measurement system is first initialized (step 100), and then measurement items are selected (step 100).
Step 101) If satellite-based measurement is selected in step 101, the satellite azimuth and elevation angle from the measurement point are
Data etc. input from the keyboard input device 32a of the man-machine interface 32 are obtained by the control arithmetic processing device 30, and stored in the memory within the control arithmetic processing device 30 or in the floppy disk device 39, and the data inputted from the keyboard input device 32a of the man-machine interface 32 are Output to CRT display 32b1 output device 34.36 (step 10
2) On the other hand, if ground system measurement is selected in step 101, the azimuth, elevation angle, and distance of the other ground station from the measurement point are input from the keyboard input device 32a of the man-machine interface 32. The control arithmetic processing unit 30 calculates the data based on the data, etc., and stores it in the memory of the control arithmetic processing unit 1!30 or the floppy disk device 39.
and the CRT display 32b1 output device 34.36 of the man-machine interface 32.
(Step 103).

After completing these processes, the true north at the measurement point is
The control arithmetic processing unit 30 calculates the data on the azimuth and angular difference from the sun input through the keyboard input device 32a of the man-machine interface 32 (step 104).Next, the measurement date, weather, and The location of the point, the name of the person in charge of measurement, etc. are input into the control processing unit 30 via the keyboard input device 32a of the man-machine interface 32 (step 105). Next, by giving an antenna drive command to the antenna drive device 12 from the keyboard input device 32a of the man-machine interface 32 via the control arithmetic processing device 30, the antenna drive device 12 is driven to direct the antenna 10 to the true north. horizontal rotation movement (step 106).

When the antenna 10 faces due north, the rotational movement of the antenna 10 is stopped by giving an antenna drive stop command to the antenna drive device 12 from the keyboard input device 32a of the man-machine interface 32 via the control processing unit 30. In step 107), input that the antenna is facing due north is input from the keyboard input device 32a of the man-machine interface 32, and the antenna driving device 12
The rotational position information (reading of the antenna mount when the antenna mount is facing due north) is read into the control arithmetic processing unit 30 and stored in the memory (step 108 ”). This is done to check the relative positional relationship between the base side and the antenna 10 when the antenna 10 is directed to the true north.By performing this operation, data will be displayed at the angle from the true north. Collection processing can now be performed. After this processing is completed, measurement item selection is executed (step 109 >. In step 109, if the measurement item is a frequency axis measurement, the frequency axis measurement processing described later is performed. (Step 110), if the measurement item is the measurement of the angular axis, the angle measurement process (step 111) described below is performed; if the measurement item is the measurement of the frequency ten angles, the measurement process of the frequency ten angles (step 112), which will be described later. If there is another measurement after each measurement is completed, the process jumps to step 109, but if there is no other measurement, the measurement is ended.

Next, details of the frequency axis measurement process (step 110) will be explained using FIGS. 3 and 4.

First, when a command is given to the control processing unit 30 by selecting whether or not the measurement is for a satellite system, the control processing unit 30 switches the first switch 14 and the second switch 18 to E in the case of satellite measurement.
If it is not a satellite-based measurement, the control processing unit 30 connects the first switch 14 and the second switch 18 to the C side (step 202). next,
Information regarding the polarization to be measured is input to the control processing unit 30 (step 203), and the frequency to be measured, that is, the measurement start frequency and measurement end frequency, is input to the control processing unit 30 (step 204). Spectrum analyzer 22 from arithmetic processing unit 30
A command to set measurement conditions is issued to the microwave signal generator 1.
6 to output the necessary frequency (for example, the center frequency of each of the measurement range divided into four) (Step 206), the third switch 37 is switched to f by the control processing unit 30, and the power and frequency are output. Measure. After that, the third switch 37
to K and the first switch 14 to K. Then, the measurement system is read, that is, the standard signal from the microwave signal generator 16 is read by the spectrum analyzer 22, the measurement data from the wattmeter 24 and the analyzer 22 is read into the control processing unit 30, and the wattmeter The gain of the measuring meter is determined from the difference between 24 and the analyzer 22, and the first disconnector 14 is connected to the measuring side (S side) (step 207).

Next, when the rotation start/end information is given to the control processing unit 30 from the keyboard input device 32a (step 208), the control processing unit 30 determines whether rotation measurement or specific direction measurement is to be performed (step 209).

When rotation measurement is selected in step 209, the antenna rotation step is given to the control processing unit 30 from the keyboard input device f32a (step 210). Then, a measurement direction is selected (step 211), which is specified when both azimuth and elevation angle rotation measurements are to be made.

Next, in step 212, whether the measurement is a normal measurement or a peak hold measurement is specified via the keyboard input device 32a. When peak hold measurement is specified in step 212, the control processing unit 30 issues a drive command to the antenna drive measurement 12 and directs the antenna 10 in the measurement starting direction (
Step 213).

Next, a command for peak hold measurement is issued from the control processing unit 30 to the spectrum analyzer 22 to enable the specified measurement (step 214). and,
Spectrum analyzer 2 transmits radio waves from antenna 10
2 (step 215).

Then, it is determined whether the measurement end angle in that direction has been reached (step 213). If it does not reach the target, the control arithmetic processing unit 3
0 issues a 1-step drive command to the antenna drive device,
Step 21 of moving the antenna 10 by the angle set in step 210? ), the process returns to step 215, but when the result is reached, the measured results are taken into the control processing unit 30, calculated, and output to the CRT display 32a of the man-machine interface 32, as well as to the printer 34.3.
6. To output to the XY plotter 38 and floppy disk 39, proceed to step 218) and step 219.

In step 219, it is determined whether measurement has been completed for all specified directions, and if not, step 213
However, if it is finished, it is moved to Ste Knob 220.

When normal measurement is specified in step 212, a drive command is issued from the control processing unit 30 to the antenna drive device, and the antenna 10 is directed in the measurement starting direction (step 230).
Then, the radio waves from the antenna 10 are measured by the spectrum analyzer 22 (step 231 ), and the measured results are imported from the spectrum analyzer 22 into the control processing unit 30 and sent to the CRT display 32a of the man-machine interface 32 and the printer 34.36.
, the XY plotter 38, and the floppy disk 39 (step 232), the process moves to step 233. In step 233, it is determined whether the measurement end angle in that direction has been reached, and if the angle has not been reached, the control arithmetic processing unit 30 issues a one-step drive command to the antenna drive unit 12,
Step 234) of moving the antenna 10 by the angle set in step 210, returning to step 231, and
If the measurement end angle has been reached in step 233, it is determined whether the measurement has been completed in all specified directions (step 235); if the measurement has not been completed, the process returns to step 230; if it has been completed, the process moves to step 220.

When the results of the measurement are displayed in an easy-to-understand manner, the results are as shown in FIG. 4(1) in the case of normal measurement, and as shown in FIG. 4(n) in the case of peak hold measurement. That is, for example, the electric field strength is measured with respect to the frequency when the antenna 10 is set at 10 degrees, and then the antenna 10 is
The results are shown in Figure 4 (1) and (n) of Figure 4 (1) and Figure 4 (n ), and FIG. 4 (II) is a peak hold measurement. At this point, it is necessary to determine whether the measurement is complete or not. Step 2
20) If the process is not finished, the process returns to step 208, but if it is finished, the process ends.

On the other hand, if the measurement item is measurement in a specific direction in step 209, the process moves to step 240, and the control arithmetic processing unit 3
0 to the antenna driving device 12 until the antenna 10 is directed in a specific direction (steps 240 and 241). When the antenna 10 reaches the specific direction, the electric field strength with respect to frequency is measured. (step 242). When the measurement results are output in this way (step 243), the results shown in FIG. 4 (I[[
).

The angle measurement process (step 111) will be explained with reference to FIGS. 5 and 6.

In step 301, the arithmetic processing unit 3 controls the polarization to be measured.
Specify it with 0. Step 300 to Step 307
, steps 200 to 20 in FIG.
7, so the explanation will be omitted.

Next, in step 308, the measurement start and end angle is input to the control processing unit 30 from the keyboard input device 32a.
), Manually change the antenna rotation step during measurement (Step 309), Input direction selection (Step 31)
0), the control arithmetic processing device 30 issues a drive command to the antenna driving device 12, performs measurement while rotating the antenna 10, and transmits the measurement data to the control arithmetic processing device 30.
Store it in a predetermined memory, etc. (step 31L312
), the measurement results can be obtained as electric field strength versus antenna angle, as shown in FIG. This measurement data is transmitted to the CRT of the man-machine interface 32.
Output by display 32a, printer 34, 36 or XY block 3 (step 313),
Next, it is determined whether all measurements in the specified direction have been completed (step 314), and if the measurement is to be continued, the process returns to step 308, but otherwise the process is complete.

FIG. 7 is a flowchart shown to explain the operation of measuring frequency and angle.

Among the steps in FIG. 7, steps 350 to 357 are the same as steps 200 to 207 in FIG. 3, so their explanation will be omitted.

Next, in step 358, the measurement start, end, azimuth, and elevation angle are entered using the keyboard of the man-machine interface 32.
The data is manually input to the control processing unit 30 via the code input device 32a. The antenna is then directed in the measurement direction (step 359). Then, the radio waves from the antenna 10 are measured by the spectrum analyzer 22 (Step 360), and the measured results are taken from the spectrum analyzer 22 into the control processing unit 30 and stored in the memory or the disk of the floppy disk device 39 (Step 3).
61), the process moves to step 362. In step 362, it is determined whether the measurement end angle in that direction has been reached, and if the angle has not been reached, the control processing unit 30 issues an l step drive command to the antenna drive device 30 to move the antenna 10 by one step. Step 363), return to step 360; in step 362, when the measurement direction has been reached, the process moves to step 364, and it is determined whether all of the specified directions have been completed; if not, step 35
In step 9, if the process has been completed, the process moves to step 365. In step 365, the output method is selected, and if it is a frequency axis output, the process goes to step 366, and if it is an angle axis output, the process goes to step 367.In each step 366 and 367, the frequency or angle axis specified on the horizontal axis is selected. , the vertical axis shows the radio wave level (
dBμV] and display it. Next, if the output has not been completed, the process proceeds to step 365; if the output has been completed, the process ends (step 36B').

8 to 17 show a second embodiment of the present invention, FIG. 8 is a block diagram of the second embodiment of the radio wave measurement system, and FIG. 9 explains the overall operation of the same embodiment. The following figure is a detailed explanation of each operation.

That is, FIG. 10 is a flowchart shown to explain the measurement of television broadcast field strength, and FIG. 11 is a diagram showing the measurement results obtained by the measurement of FIG. 1O. 1st
FIG. 2 is a flow chart shown to explain the horizontal pattern measurement, and FIG. 13 is a diagram showing the measurement results obtained by the measurement of FIG. 12. Fig. 14 is a flowchart shown to explain hide pattern measurement, and Fig. 15 is a flowchart shown to explain hide pattern measurement.
FIG. 4 is a diagram showing measurement results obtained by the measurements in FIG. 4;

FIG. 16 is a flowchart shown to explain the field strength measurement of FM broadcasting, and FIG. 17 is a diagram showing the measurement results obtained by the measurement of FIG. 16.

Next, a second embodiment shown in FIG. 8 will be described.

The difference between the second embodiment and the first embodiment is that the antenna is a directional antenna 40 such as a Yagi antenna, the antenna drive device 42 is a drive control section 40a, and the drive section 42C1 for moving the antenna ball 42b up and down is horizontal. The first switch 14 and the second switch 18 are connected to the C side, and the signal from the antenna is transmitted to the monitor television receiver 43 via the second switch 18. and the spectrum analyzer 22, and there is no other change in the configuration. Therefore, the reference numerals used in the first embodiment will be used and the explanation thereof will be omitted.

The operation of the second embodiment configured as described above will be explained.

First, the overall flow of the second embodiment will be explained using FIG. 9.

First, the system is initialized (step 400).

Next, a measurement item is selected (step 401). This is executed by giving an instruction to the control processing unit 30 from the keyboard input device 32a of the man-machine interface 32. The measurement items include (1) measurement of electric field strength, (ii) measurement of horizontal pattern, and (iii) measurement of hide pattern. When performing (i) different strength measurements (step 401), specify whether it is television broadcasting or FM broadcasting (step 402), and measure the electric field strength in the case of television broadcasting (step 403).
), the electric field strength is measured in the same way as in the case of FM broadcasting (step 404).

Next, if the measurement is to be completed, the process is terminated, and if the measurement is to be continued, the process returns to step 401 (step 405).

Further, when horizontal pattern measurement is instructed in step 401, the horizontal pattern measurement process is executed (step 406), and when hide pattern measurement is instructed in step 401, the hide pattern measurement process is executed (step 406). Step 407).

Next, details of each measurement will be explained.

First, measurement of the electric field strength of television broadcasting (step 403 in FIG. 9) will be explained with reference to the flowchart in FIG. 10. The channel to be measured is instructed from the keyboard input device 32a to the control processing unit 30 (step 501). Next, the antenna is raised to a predetermined height and directed toward the station (manually or automatically at the maximum electric field strength point. Step 501').

Set the spectrum analyzer 22 to the frequency of the measurement start channel according to a command from the arithmetic processing unit 30,
The electric field strength is measured and stored in the memory of the arithmetic processing unit 30 (step 502). Next, it is determined whether it is the measurement end channel (step 503), and if it is not the end channel, the process returns to step 502.

On the other hand, when measurements have been made up to the end channel, the image quality is determined by the monitor television receiver 43 and inputted from the keyboard input device 32a. Thereafter, in step 504, the measurement results are output to, for example, the CRT display 32b1 printer 34, 37 of the man-machine interface 32, the XY plotter 36, and the floppy disk device 38 as an external storage device, as shown in FIG.

Next, the horizontal pattern measurement (step 406 in FIG. 9) will be explained with reference to the flowchart in FIG. 12.

First, connect the measurement channels to the man-machine interface 3.
2 from the keyboard input device 32a of the control arithmetic processing device 3.
0, and input the number of antenna rotation steps (for example, 5 degrees if you want to measure in 5 degree steps) and the angle range you want to measure (for example, 360 degrees from true north) from the keyboard input device 32a of the man-machine interface 32. The antenna 10 is input to the processing device 30 (step 601), and the antenna 10 is set to a specific height by operating the vertical movement drive unit 42c of the antenna drive device 42 according to the command from the control arithmetic processing device 30 (step 601). 60
2). Next, the antenna 10 is rotated by rotationally driving the rotating part 42d of the antenna driving device 42 in response to a rotational drive command from the control processing unit 30 (step 603), and it is determined whether the rotation has reached a predetermined rotation step (step 604). , if it is not rotating, return to step 603, but if it is rotating, return to step 605
Move to. In step 605, the radio waves from the antenna 40 are measured by the spectrum analyzer 22, the measured value is read by the control processing unit 30, and this is stored in the memory of the device 30 (step 605). It is determined whether the rotation has reached 360 degrees (step 606), and if the rotation has not reached 360 degrees, step 603)
However, if the measurement angle is reached, the process moves to step 607.

In step 607, the measurement data stored in the memory of the control processing unit 30 is transferred to the man-machine interface 3.
2 CRT display 32b, printer 34.37
, XY block-36, output to the disk of the floppy disk device 39, which is an external storage device. The diagram output in this way is the output diagram in FIG. 13. In this way a horizontal pattern can be obtained.

Figure 14 shows the hide pattern measurement (Step 40 in Figure 9).
A flowchart for explaining the operation of 7) is shown.

First, the antenna 40 is directed toward the measurement direction (step 70
0), this means that the control processing unit 30 issues a rotation command to the rotating unit 42d of the antenna drive measurement 42, causing the rotating unit 42d to rotate, or the control processing unit 30 rotates the antenna 360 degrees in 5 degree steps. This can be realized by determining the strength of the radio waves at each step using the spectrum analyzer 22, issuing a rotation command to direct the radio waves to the strongest point, and rotating the rotating part 4'2d. Next, the measurement start height and measurement end height of the antenna 10 are specified in a specific direction (step 701).
. Next, a measurement step in the height direction of the antenna 10 is specified (step 702). And antenna drive section W
42 is operated to move the antenna 40 upward from the measurement start position, and this continues until the antenna 40 reaches the set measurement step (steps 703 and 704). When the measurement step is reached, the radio waves from the antenna 40 are measured by the spectrum analyzer 22, and the measurement results are sent to the control processing unit 3.
0 memory (step 705). Next, it is determined whether the set measurement end height has been reached (step 706). If the height has not been reached, the process moves to step 703, and if it has, the process moves to step 707. Step 7
In 07, a diagram drawn by data stored in the memory of the control processing unit 30 is displayed on the CRT display 32, 32b1, printer 34, 37 of the man-machine interface 32, the XY plotter 36, and the flock-disk device 39 as an external storage device. Output to disk.

The output diagram output in this way is shown in FIG.
In the figure, the vertical axis is the antenna height h (m), and the horizontal axis is the electric field strength (d
BμV], and as shown in the figure, a characteristic is obtained in which the electric field strength changes according to the height.

FIG. 16 is shown to explain the operation of measuring the electric field strength of FM broadcasting (step 404 in FIG. 9). Step 800 is to raise the antenna 40 to a predetermined height and automatically or manually direct it toward the station. ). Next, the frequency to be measured is instructed to the control processing unit 30 from the keyboard 32a (step 801). Set the spectrum analyzer 22 to the measurement start frequency, measure the electric field strength, and store the results in the memory of the control processing unit 30 (
Step 802).

Next, it is determined whether it is the measurement end frequency (step 803).
If the process is not finished, the process moves to step 802, and if the process is finished, the process moves to step 804. In step 804, the measurement data stored in the arithmetic processing unit 30 is plotted on the CRT display 32b1 of the man-machine interface 32.
It outputs to printers 34 and 37, XY flock 36, and floppy disk device 39 as an external storage device. In this case, a diagram as shown in FIG. 17 is output.
In each of the embodiments, the measurement data was explained as being output each time a measurement is made, and the measurement data was stored in the memory until the measurement was completed and outputted at once after the measurement was completed. However, in each embodiment, It is not limited to this.

〔Effect of the invention〕

As described above, according to the present invention, it is possible to accurately and easily perform radio wave measurements corresponding to the antenna position or frequency, and moreover, it is possible to speed up the measurement and save labor.

[Brief explanation of drawings]

1 to 6 show a first embodiment of the present invention,
Fig. 1 is a block diagram of the same embodiment, Fig. 2 is a flowchart showing the overall flow, Fig. 3 is a flowchart to explain frequency axis measurement, and Fig. 4 is a measurement obtained by the operation shown in Fig. 3. Data characteristics diagram. Figure 5 is a flowchart to explain the operation of angle axis measurement. Figure 6 is a characteristic diagram of the measurement data obtained in the operation of Figure 5. Figure 7 is a flow chart for explaining the operation of angle axis measurement. Flowcharts shown to explain the operation, FIGS. 8 to 17 show a second embodiment of the present invention, FIG. 8 is a block diagram of the same embodiment, and FIG. 9 is an overall diagram of the same embodiment. Flowchart of the flow, Figure 10 is a flowchart of radio wave measurement of TV Jiran broadcasting, 1st page 10th
Fig. 12 is a flowchart for explaining horizontal pattern measurement; Fig. 13 is a characteristic diagram of the measurement data obtained by the measurement shown in Fig. 12; Fig. 14 is a flowchart of the hide pattern measurement, Fig. 15 is a characteristic diagram of the measurement data obtained in Fig. 14, Fig. 16 is a flowchart of the measurement of FM broadcast waves, and Fig. 17 is a graph obtained by the operation shown in Fig. 16. FIG. 3 is an explanatory diagram of measured data. 10.40--Antenna, 12.42--Antenna drive device, 22--Spectrum analyzer, 30-.
・-Control processing unit, 32-・Man-machine interface, 34-music printer, 36-X-Y plotter. Agent Patent Attorney Tomo Murakami - Fig. 1 2a Fig. 2 Fig. 4 1111 Company Fig. 6 M/ Fig. 8 2a Fig. 9 Fig. 1O Fig. 11 Fig. 12 Fig. 13 Fig. 180/ Fig. 14 Figure 15

Claims (1)

[Claims] (1) An antenna that receives radio waves, an antenna driving means that can control the attitude of the antenna and output position information of the antenna, and a means that captures the radio waves from the antenna and measures the electric field strength of a specific frequency and specific frequency band. The antenna drive means can be driven and controlled, and the antenna position information from the drive means and the measurement data from the measurement means are taken in and matched to the electric field strength and frequency band corresponding to the antenna position information. A radio wave measurement system comprising a control calculation processing means for obtaining electric field strength.