JPH08271619A - Radar information calibration apparatus - Google Patents

Abstract

PURPOSE: To obtain a radar information calibration apparatus by which, when many radar stations exist, the number of operations required for setting and adjusting respective installation positions of the respective radar stations can be reduced. CONSTITUTION: A position-information input means 11A by which pieces of observation position information are input respectively regarding respective observation positions selected according to installation positions of a plurality of radars is installed, and an installation-position- calibration-information setting means 12A by which directions and distances up to the installation positions of the corresponding radars from the respective observation positions are set respectively as pieces of installation-position-calibration information is installed. In addition, an installation-position computation means 13A by which a correction arithmetic operation based on the pieces of corresponding installation-position calibration information obtained from the installation-position-calibration-information setting means 12A is performed to the respective pieces of observation-position information obtained from the position-information input means 11A and by which the installation positions of the plurality of radars are computed is provided, and an installation-position information output means 14A by which the pieces of installation-position information, on the plurality of radars, computed by the installation- position computation means 13A are output to an external device is provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for calibrating radar information obtained from a plurality of radars installed depending on the coverage area of the radar.

[0002]

2. Description of the Related Art A wide range of radar monitoring areas is divided into a plurality of areas by a radar coverage area, a radar station is provided for each area, and radar information obtained from the plurality of radar stations is used as a radar information monitoring control apparatus of a main station. When performing image synthesis, centralized monitoring, etc., it is necessary to correctly calibrate the position of each radar station and the pointing direction of the radar image (generally called the direction of the radar antenna). This is, for example, when the radar images detected by two radar slave stations are individually transmitted to the master station and the two radar images received by the master station are combined and displayed, the overlapping area of the two radar coverage areas is displayed. This is because, if there is one target in, if the positions of the two radar stations and the azimuths of the radar antennas are not calibrated correctly, they may be detected as two targets at different positions.

Here, the station position of the radar station is the position where the transmission / reception antenna of the radar is installed, and generally this station position is displayed as position information such as latitude, longitude and height.
Also, the calibration of the antenna azimuth is the actual antenna azimuth (generally, the true north is the azimuth zero degree, and the angle measured in the clockwise direction is the azimuth) and the azimuth oscillator (for example, the synchro The azimuth signal output from the azimuth oscillator is calibrated so that the error between the azimuth signal output from the oscillator and the azimuth pulse oscillator is zero. For example, when the azimuth transmitter is a synchro oscillator, the positional relationship between the synchro stator and the rotor is manually adjusted so that the azimuth indicated by the indicator coincides with the actual antenna azimuth.

At the time of station placement of a radar station or the like, even if the installation location in the initial installation plan is known, the actual installation location will be the planned location due to changes in the line-of-sight conditions of the radio waves. In such a case, the actual measurement of the position of the radar station is performed, and the measured position information is manually set in the radar information monitoring device on the main station side by the operator. In addition, since the azimuth transmitter that transmits the azimuth of the radar antenna generally includes a mechanical part that rotates by being combined with the antenna, even if calibration is performed at the time of installing the antenna, the time elapses due to wear of the mechanical parts. Causes an error. Therefore, the operator manually calibrates the azimuth transmitter during maintenance at regular intervals, and also needs to calibrate the azimuth oscillator when replacing the radar antenna.

[0005]

However, when the radar has a wide monitoring area and a large number of radar stations exist, the radar station positions of the respective radars are measured, and the measured position information is manually set. In addition, it takes a lot of work time to manually calibrate the antenna direction of the radar at regular intervals.

[0006]

A radar information calibrating apparatus according to the present invention is a radar information calibrating apparatus obtained from a plurality of radars installed depending on a coverage area of the radar, wherein Position information input means for respectively inputting observation position information for each observation position selected accordingly, and the azimuth and distance from each observation position to the corresponding station position of the radar are respectively set as the station position calibration information. A plurality of station position calibration information setting means and correction calculation based on corresponding station position calibration information obtained from the station position calibration information setting means are performed for each observation position information obtained from the position information input means. Station position calculating means for calculating the station position of each radar, and the station position information of each of the plurality of radars calculated by the station position calculating means. It is obtained by a station placement position information output means for outputting to.

[0007]

According to the present invention, in the calibration device for radar information obtained from a plurality of radars installed depending on the coverage area of the radar, the position information input means is selected according to the station positions of the plurality of radars. The observation position information about the observation position is input, and the azimuth and distance from each observation position to the corresponding station position of the radar is set as the station position calibration information in the station position calibration information setting means. The station position calculation means performs a correction calculation on each of the observed position information obtained from the position information input means based on the corresponding station position calibration information obtained from the station position calibration information setting means. Calculate each station position. Since the station position information output means automatically outputs the station position information of each of the plurality of radars calculated by the station position calculation means to an external device, in the prior art, manual setting and adjustment are performed. The work of multi-radar station position information processing, which had been done previously, has been automated, and the number of man-hours such as on-site work has been greatly reduced.

[0008]

【Example】

Example 1. FIG. 1 is a diagram showing a configuration of a radar information calibration apparatus according to a first embodiment of the present invention. In the first embodiment, when each radar set position is unknown or inaccurate when a plurality of radar stations are stationed, Each radar installation position is automatically calibrated to obtain correct installation position information. In FIG. 1, N 1A are # 1, # 2, ... #N position observation devices, respectively, and for example, a GPS positioning device can be used. Then, each position observation device 1A observes position information such as latitude and longitude of each observation position where its own device is installed.

The N position observing devices 1A shown in FIG.
Shows an example in which a number of devices equal to the number N of installed radars are used, but it is not always necessary to provide N devices at the same time. For example, one position observation device is initially
It is also possible to move the observation position one by one, and then move it to the # 2 observation position, that is, move the observation position, that is, observe the position while shifting the observation time. 1 of FIG.
Is an operating device, for example, a keyboard or the like can be used. Three
Is a display device, and in this example, the radar information calibration device 10A
The post-calibration station position information of each radar output from is displayed.

Reference numeral 10A in FIG. 1 is a radar information calibrating apparatus according to the first embodiment, which includes means 11A to 14A. 11A is position information input means, which is connected to N external position observing devices (for example, the GPS positioning device) by wire or wirelessly, and has position information about N observing positions sent from each device (for example, latitude). , Longitude and other information). Reference numeral 12A is a station position calibration information setting means, which stores initial values of a plurality of radar station positions (these initial values are later calibrated and updated to accurate position information), station position calibration information, and the like. It is a means that is set via the operation device 2.

Assuming that N position observation devices are provided at the observation positions respectively corresponding to the N radar station positions, in this example, a position indicating the azimuth and distance from each observation position to the corresponding radar installation position. The calibration vector is set in the station position calibration information setting means 12A as the station position calibration information. Reference numeral 13A is a station position calculation means, which is based on the station position calibration information setting means 12A for the position information of each observation position input from the position information input means 11A.
It is a means for performing a correction calculation based on the station position calibration information of each corresponding observation position read from the above, and calculating the station positions of each of the plurality of radars. 14A is a station position information output means, which outputs the station position information of each radar calculated by the station position calculation means 13A to an external device and the display 3
Is a means for outputting and displaying.

FIG. 2 is a diagram for explaining various position information in FIG. 1, and for simplification of the explanation, an example in the case of two radar stations and two position observation devices is shown. The operation of FIG. 1 will be described with reference to FIG. Station position calibration information setting means 1
In 2A, an initial value of each station position of a plurality of radars is set in advance via the operation unit 2. Further, this initial value may be an incorrect value. For example, even if the installation position of the specific radar was changed to a position different from the installation planning stage, but since the installation position was not actually measured after that, even if only the inaccurate position information obtained from the map etc. is known, this Inaccurate radar installation position information (for example, latitude and longitude information) can be set as an initial value. When the installation position of the specific radar is the same as the position at the installation planning stage and is known, this known station position information may be set as an initial value. The initial value of this station position information is used for managing the radar station position information until it is updated to a more accurate value by subsequent calibration of the station position information.

Next, as shown in FIG. 2, the observation position corresponding to the # 1 radar installation position is selected, the # 1 position observation device 1A is installed at that position, and the observation position corresponding to the # 2 radar set position is selected. # 2 position observing device 1
Install A. As the observation position of the position observation device,
For example, a GPS positioning device can physically receive radio waves from GPS satellites at that point, and a position calibration vector indicating the azimuth and distance from each observation position to the corresponding radar installation position can be measured or precisely measured. Select the points obtained from the above. For example, it is assumed that a position that is 100 m away from the installation position of the specific radar in the true south direction (that is, the azimuth of 180 degrees) is selected as the observation position capable of GPS position observation.

Then, the operator uses the operation unit 2 to obtain the position calibration vector information indicating the azimuth and distance from each of the observation positions to the corresponding radar installation position (to be exact, the installation position of the radar antenna). Calibration information setting means 12
Set to A. In the above example, the direction of the specific radar installation position viewed from the selected observation position is true north (that is, azimuth zero degree).
And the distance is 100m, and this azimuth zero degree and distance 100m
Will be set as the position calibration vector information.

Next, at each observation position, the position of the observation position such as latitude and longitude is observed using a GPS positioning device or the like, and the observed position information is wired or wireless (that is, via a wireless transceiver). ), Position information input means 1
Send to 1A. It should be noted that the positioning information obtained by the GPS positioning device calculates the average value of a plurality of times of measured values to eliminate variations in the measured values, and is called DGPS.
GPS by GPS positioning at a fixed station with known longitude and height
Error data is obtained, and the measurement value of each GPS positioning device is corrected by the error data to obtain the position information with improved positioning accuracy.

When the observation position information from each position observation position is input to the position information input means 11A, the station position calculation means 13A reads the observation position information from each position observation device read from the position information input means 11A. Station position calibration information setting means 12 for (for example, latitude and longitude)
A correction calculation is performed based on the corresponding position calibration vector information read from A to calculate the position of each radar station (latitude and longitude in the above example). In the example of the position calibration vector, the GPS positioning information (latitude and longitude) observed at a specific observation position is set to 1 in the direction of azimuth zero based on the position calibration vector information to the corresponding radar installation position.
The latitude and longitude of the point moved by 00 m are calculated, and this is set as the station position of this radar.

The station position calculating means 13A sets the calculated station position in the station position calibration information setting means 12A. In addition, when the initial value of the station position of the relevant radar is preset in the station position calibration information setting means 12A, this initial value is read and the station position of the specific radar calculated this time and the read initial value are used. If there is a difference between the two, the initial value is updated to the station position of the specific radar calculated this time. Therefore, the initial value, which is not so accurate at first, is updated to the accurate station position information. In this way, the station position calculating means 13A calculates each station position of the plurality of radars and sequentially supplies it to the station position information output means 14A. Then, the station position information output means 14A outputs each station position information of the supplied plural radars from an output end to an external device (for example, a radar information monitoring control device of the main station).
Display on the display unit 3.

FIG. 3 is a diagram showing an example of the correspondence between the observation position and the radar installation position of the position observing device different from that of FIG. 2. FIG. 3 (a) shows one position observing device to the # 1 radar. # 1 position calibration vector indicating the direction and distance to the installation position and # 2 indicating the direction and distance to the radar installation position # 2
Position calibration vector and station position calibration information setting means 12A
An example of setting to is shown. Further, FIG. 3B
The position calibration vector for one radar installation position is obtained from two different observation positions.
It shows an example in which the 1A and # 1B position calibration vectors are set in the station position calibration information setting means 12A. In this case, the station position calculating means 13A can use only the azimuth information from the two observation positions to obtain the radar station position as the intersection position of the two observation directions. Also in the method of calculating the antenna azimuth error in Example 2 described later, the antenna azimuth error is calculated using the azimuth information obtained by observing one radar installation position from a plurality of observation positions as shown in FIG. 3B. You can also do it.

Example 2. FIG. 4 is a diagram showing the configuration of the radar information calibration apparatus according to the second embodiment of the present invention.
Is capable of automatically calculating the antenna azimuth error of each radar after the plurality of radar station positions are calculated by the first embodiment. In FIG. 4, N pieces of 1B are # 1, # 2, ... #N azimuth observing devices, and for example, a gyro compass device or the like can be used. Then, each azimuth observing device 1B observes the azimuth with respect to the corresponding radar station position from its own observation position.

The N azimuth observing devices 1B shown in FIG.
Shows an example in which a number of devices equal to the number N of installed radars are used, but it is not always necessary to provide N devices at the same time. For example, one azimuth observation device,
The observation position may be sequentially moved, that is, the direction observation may be performed while shifting the observation position, such that the observation position is provided at one observation position and then moved to the # 2 observation position. The operation device 2 and the display device 3 in FIG. 4 are the same as those in FIG.

Reference numeral 10B in FIG. 4 is a radar information calibrating apparatus according to the second embodiment, which includes means 11B to 14B. Reference numeral 11B is an azimuth information input unit, which is connected to N external azimuth observation devices (for example, the gyrocompass device) in a wired or wireless manner and transmits N pieces of observation azimuth information (generally, a true north This is a means for inputting an angle measured in the clockwise direction as zero degrees). Reference numeral 12B denotes a radar azimuth information setting means, which is an initial value of the azimuth error of a plurality of radars (this initial value is calibrated at fixed intervals corresponding to a change over time and updated to a new azimuth error). This is a means for setting radar direction information and the like for each observation position via the operation device 2. In this example, the azimuth information of the observation position where the azimuth observation device is detected by the radar of each radar station is set as radar azimuth information in the radar azimuth information setting unit 12B.

In order that the observation positions of the azimuth observing devices are detected by the corresponding radars, each observation position conforms to the line-of-sight condition of the radio wave (that is, it does not become a shaded area of the radio wave due to an obstacle on the way). Such a radio wave reflector (for example, a radio wave reflector or the like) having an appropriate reflection area and reflectance may be provided at each observation position toward the radar installation position. Reference numeral 13B is an azimuth error calculating means, which is the azimuth error of the detected azimuth information of each corresponding radar read from the radar azimuth information setting means 12B with respect to the observation azimuth information of each observation position input from the azimuth information input means 11B (generally, radar Antenna heading error)
Are means for calculating respectively. Reference numeral 14B is an azimuth error information output means, which outputs the antenna azimuth error information of each radar calculated by the azimuth error calculation means 13B to an external device and also to the display device 3 for display.

FIG. 5 is a diagram for explaining various azimuth information in FIG. 4, and for simplification of the explanation, an example in the case of two radar stations and two azimuth observation devices is shown. The operation of FIG. 4 will be described with reference to FIG. Radar direction information setting means 1
In 2B, an initial value of each antenna azimuth error of a plurality of radars is set in advance via the operation unit 2. If the antenna bearing error of the specific radar is unknown, the initial value of the antenna bearing error may be set to zero. For example, when the radar antenna was installed, the antenna azimuth was calibrated, so the azimuth error was zero at that time, but since it was used for a long time after that, the current azimuth error is zero even if it is unknown. The initial value should be set. Although the antenna azimuth error of the specific radar is known, if the azimuth transmitter has not been adjusted, this known error value is set as an initial value. Then, this initial value of the antenna azimuth error is used for management of radar antenna azimuth information until it is updated to a more accurate value by the subsequent calibration of the antenna azimuth.

Next, as shown in FIG. 5, an observation position with good visibility corresponding to the # 1 radar installation position is selected, and the # 1 azimuth observation device 1B and a radio wave reflector are installed at that position.
2 An observation position with good visibility corresponding to the radar installation position is selected, and the # 2 azimuth observation device 1B and a radio wave reflector are also installed at that position. For example, it is assumed that a point distant from the installation position of the specific radar by a distance in the direction of true north (that is, azimuth zero degree) is selected as the observation position. Next, at each observation position, the azimuth measuring device 1B is used to observe the azimuth with respect to the corresponding radar installation position from its own observation position, and the observed azimuth information is wired or wirelessly input to the azimuth information input means 11B. Send. In the above-mentioned example of selecting the observation position, the direction in which the installation position of the specific radar is viewed from this observation position is true south, so that the azimuth information of 180 degrees is transmitted.

In each radar station, the radar is activated and the azimuth of the radio wave reflector provided at the corresponding observation position is detected. The detected azimuth information is used as radar azimuth information via the operation unit 2. And sets it in the radar direction information setting means 12B. In the above example of observation position selection, since the observation position was selected in the true north direction from the installation position of the specific radar, the radar detects the reflected radio waves from the radio wave reflector and displays the direction on the display at zero degrees. If so (that is, if the difference is 180 degrees from the input azimuth information), there is no azimuth error. However, in this case, it is assumed that the direction of the radio wave reflector detected by the radar is 1 degree.

The azimuth error calculation means 13B corresponds to the observation azimuth information obtained by observing the radar installation position from each observation position read from the azimuth information input means 11B, and the corresponding observation detected by each radar read from the radar azimuth information setting means 12B. The azimuth error of the detected azimuth information of the position is calculated.
That is, the azimuth error is the difference obtained by subtracting the azimuth at which the radar station position is observed from the observation position from the sum obtained by adding 180 degrees to the azimuth at the observation position detected and displayed by the radar. In the above example, (1 + 180) -180 = 1, and the azimuth error of +1 degree is calculated.

The azimuth error calculating means 13B sets the calculated azimuth error of the radar in the radar azimuth information setting means 12B. When the initial value of the azimuth error of the corresponding radar is preset in the radar azimuth information setting means 12B, this initial value is read and updated to the latest azimuth error calculated this time. In this way, the azimuth error calculation means 13B calculates the antenna azimuth errors of the plurality of radars and supplies them to the azimuth error information output means 14B successively. Then, the azimuth error information output means 14B outputs the antenna azimuth error information of the supplied plural radars to the external device (for example, the radar information monitoring control device of the main station) from the output end and displays it on the display 3.

The observation position and the radar installation position are shown in FIG.
There is no need to make a one-to-one correspondence, as in the case of the correspondence example of FIG. 3, and the azimuths of a plurality of radar installation positions can be observed from one observation position, or one position from a plurality of observation positions. Alternatively, the azimuth of the radar installation position may be observed.
For example, a point 100 m away from the specific radar in the true north direction is the first observation position, and 500 m in the same true north direction.
It is assumed that a distant point is selected as the second observation position. In this case, if the direction of the straight line connecting the three points from the second observation position measured by the azimuth measuring device to the first observation position and the radar installation position is true south, the first and second positions detected by the radar. If the straight line connecting the detection positions of the two radio wave reflectors provided at the observation position is azimuth zero, there is no azimuth error of the radar.
When the azimuth detected by the radar is not zero degrees, the deviation from the azimuth zero degree becomes the radar azimuth error.

Example 3. FIG. 6 is a diagram showing the configuration of the radar information calibration apparatus according to the third embodiment of the present invention.
After the plurality of radar station positions are calculated in the first embodiment, the antenna azimuth error of each radar is automatically calculated in the same manner as in the second embodiment, and the calculated azimuth error is obtained from each radar. It is possible to automatically correct the received antenna azimuth signal and supply the corrected radar azimuth signal to each radar indicator. Note that this electrical automatic correction of the azimuth error eliminates the need for mechanical calibration of the antenna azimuth transmitter. In FIG. 6, 10C is the radar information calibration apparatus of the third embodiment, and the second embodiment shown in FIG.
The azimuth error holding means 15 of N pieces and the azimuth error correction means 16 of N pieces are added to the radar information calibration device 10B. Therefore, in FIG. 6, the operation of only the above-mentioned part added to FIG. 4 will be described, but other parts will be described with reference to FIG.
Works exactly as in.

The azimuth error calculating means 13B of FIG. 6 calculates each antenna azimuth error of a plurality of radars as in the case of FIG. 4, and the calculated antenna azimuth error information is output to the azimuth error information output means 14B. In addition to outputting to the display unit 3 and the like, the antenna azimuth error information of each radar is supplied to the N antenna azimuth error holding means 15. For example, assume that the azimuth error of the # 1 radar is +1 degree, the azimuth error of the # 2 radar is −2 degrees, and the azimuth error of the #N radar is +2 degrees. Each azimuth error holding means 15 holds the azimuth error information supplied as described above and supplies it to the corresponding azimuth error correction means 16.

The azimuth signal from each radar and the azimuth error information of the corresponding radar from the azimuth error holding means 15 are input to each azimuth error correction means 16, and the azimuth error of the azimuth error of each radar is detected. Correction is performed, and the corrected radar azimuth signals are output and supplied to each radar display.
In the above azimuth error example, since the azimuth signal of the # 1 radar has an error of +1 degree, the azimuth signal obtained by correcting the inputted radar azimuth signal by -1 degree is output, and the azimuth signal of the # 2 radar is output. Since there is an error of −2 degrees in the signal, the azimuth signal obtained by correcting the input radar azimuth signal by +2 degrees is output. As described above, even if the antenna azimuth signal of each radar includes an error (that is, even if the mechanical calibration of the antenna azimuth transmitter is not performed), the azimuth error is electrically automatically corrected. Maintenance man-hours are greatly reduced.

Example 4. FIG. 7 is a diagram showing the configuration of the radar information calibration apparatus according to the fourth embodiment of the present invention.
2 of Example 1 shown in FIG. 1 and Example 2 shown in FIG.
It also has two functions. In FIG. 7, N 1C are position / orientation observing devices, and include two devices, the position observing device 1A of FIG. 1 and the azimuth observing device 1B of FIG. 10D is the radar information calibration device of the fourth embodiment,
11C to 14C are included.

Reference numeral 11C in FIG. 7 is position / orientation information input means, which inputs the position information and orientation information described in FIGS. 1 and 4 from N external position / orientation observation devices 1C. Reference numeral 12C is a station position / radar direction information setting means, which has both functions of the station position calibration information setting means 12A of FIG. 1 and the radar direction information setting means 12B of FIG. 13C is a station position / orientation error calculating means,
It has both functions of the station position calculating means 13A of FIG. 1 and the azimuth error calculating means 13B of FIG. 14C is the station position
The azimuth error information output means outputs the azimuth error information and the azimuth error position information of each of the plurality of radars calculated by the azimuth error position / azimuth error calculating means 13C to the external device and the display 3. The operation of FIG. 7 performs both the operation of FIG. 1 and the operation of FIG.

Example 5. FIG. 8 is a diagram showing the configuration of the radar information calibration apparatus according to the fifth embodiment of the present invention.
6 is obtained by adding the N azimuth error holding means 15 and the N azimuth error correction means 16 described in FIG. 6 to the configuration of the fourth embodiment shown in FIG. Therefore, in addition to the functions of FIG. 7, the radar azimuth signal input is automatically corrected based on the antenna azimuth error of each radar calculated by the station position / azimuth error calculating means 13C, and the corrected radar azimuth signal is obtained. Can be output respectively. Since the operation of this automatic correction is the same as that in the case of FIG. 6, description thereof will be omitted.

[0035]

As described above, according to the present invention, in the radar information calibrating device obtained from a plurality of radars installed depending on the coverage area of the radar, the position information input means has the station positions of the plurality of radars. The observation position information for each observation position selected in accordance with the above is input, and the azimuth and distance from each observation position to the corresponding station position of the radar are input to the station position calibration information setting means. The station position calculating means sets correction information based on the corresponding station position calibration information obtained from the station position calibration information setting means with respect to each observation position information obtained from the position information input means. Then, the station positions of each of the plurality of radars are calculated. Then, the station position information output means automatically outputs the station position information of each of the plurality of radars calculated by the station position calculation means to the external device. This has the effect of automating the work of station position information processing of multiple radars, and significantly reducing the work man-hours such as on-site work.

[Brief description of drawings]

FIG. 1 is a diagram showing a configuration of a radar information calibration apparatus according to a first embodiment of the present invention.

FIG. 2 is a diagram illustrating various position information in FIG.

FIG. 3 is a diagram showing an example of correspondence between observation positions and radar installation positions different from those in FIG.

FIG. 4 is a diagram showing a configuration of a radar information calibration apparatus according to a second embodiment of the present invention.

FIG. 5 is a diagram illustrating various position information in FIG.

FIG. 6 is a diagram showing the configuration of a radar information calibration device according to a third embodiment of the invention.

FIG. 7 is a diagram showing a configuration of a radar information calibration apparatus according to a fourth embodiment of the present invention.

FIG. 8 is a diagram showing a configuration of a radar information calibration device according to a fifth embodiment of the invention.

[Explanation of symbols]

 1A Position Observation Device 1B Direction Observation Device 2 Manipulator 3 Display 10A to 10E Radar Information Calibration Device 11A Position Information Input Means 11B Direction Information Input Means 12A Station Position Calibration Information Setting Means 12B Radar Direction Information Setting Means 13A Station Position Calculation Means 13B Heading error calculation means 14A Station position information output means 14B Heading error information output means

Claims (5)

[Claims] 1. An apparatus for calibrating radar information obtained from a plurality of radars, each of which is installed depending on the coverage area of the radar, wherein observation position information for each observation position selected according to the station positions of the plurality of radars is provided. Position information input means for inputting respectively, station orientation calibration information setting means for respectively setting the azimuth and distance from each observation location to the station location of the corresponding radar as station location calibration information, and the location information input means For each observation position information obtained from, the station position for calculating the station position of each of a plurality of radar by performing a correction calculation based on the corresponding station position calibration information obtained from the station position calibration information setting means. A calculation means; and station position information output means for outputting the station position information of each of the plurality of radars calculated by the station position calculation means to an external device. Radar information measuring apparatus according to claim. 2. A device for calibrating radar information obtained from a plurality of radars installed depending on the coverage area of the radar, wherein the corresponding radars are observed from respective observation positions selected according to the plurality of radar station positions. Azimuth information input means for respectively inputting azimuth information for the station position, and radar for setting azimuth information for each observation position selected according to the radar station position detected by each of the plurality of radars as radar azimuth information. Azimuth information setting means, azimuth error calculation means for calculating azimuth error of each detected azimuth information obtained from the radar azimuth information setting means with respect to each observation azimuth information obtained from the azimuth information input means, and azimuth error calculation means Azimuth error information output means for outputting the azimuth error information of each of the plurality of radars calculated by Radar information measuring apparatus according to claim and. 3. An azimuth error holding means for holding the azimuth error information of each of the plurality of radars calculated by the azimuth error calculation means, and an azimuth signal from each of the plurality of radars and each radar corresponding to the azimuth error holding means. And the azimuth error correction means for inputting the azimuth error information and correcting the azimuth error with respect to the azimuth signal input from each radar, and outputting the corrected radar azimuth signal respectively. Claim 2
The described radar information calibration device. 4. A calibration device for radar information obtained from a plurality of radars installed depending on the coverage area of the radar, the observation position information for each observation position selected according to the station position of the plurality of radars. A position / azimuth information input means for respectively inputting azimuth information with respect to the station position of the corresponding radar observed from each observation position, and an azimuth and a distance from each observation position to the station position of the corresponding radar. Station position calibration / radar direction information setting means for setting the station position calibration information and the radar direction information, which is the direction information of the corresponding observation positions detected by each of the plurality of radars, and the position / direction information input For each observation position information obtained from the means, correction operation based on the corresponding station position calibration information obtained from the station position calibration / radar direction information setting means is performed. Calculating the station positions of each of the plurality of radars, and detecting direction information obtained from the station position calibration / radar direction information setting means for each observation direction information obtained from the position / azimuth information input means. Station position / azimuth error calculating means for respectively calculating the azimuth error of the radar, and a station for outputting the station position information and azimuth error information of each of the plurality of radars calculated by the station position / azimuth error calculating means to an external device. A radar information calibrating device comprising: station position / azimuth error information output means. 5. An azimuth error holding unit that holds the azimuth error information of each of the plurality of radars calculated by the station position / azimuth error calculation unit, and an azimuth signal from each of the plurality of radars and the azimuth error holding unit. Azimuth error correction means for inputting the azimuth error information of each corresponding radar, correcting the azimuth error with respect to the azimuth signal input from each radar, and outputting the corrected radar azimuth signal respectively. 5. The method according to claim 4, wherein
The described radar information calibration device.