JP2013253910A - Wind measuring apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wind measuring apparatus capable of suppressing deterioration in wind measuring accuracy even when oscillation is relatively large.SOLUTION: An oscillation correction point calculation unit 7 obtains a visual line direction originally oriented and a post-oscillation visual line direction that is a visual line direction actually oriented using beam scan angle information from an antenna control unit 4, oscillation information from an oscillation detection unit 5, and a visual line direction and distance information from a beam direction setting unit 6, and calculates the originally-oriented visual direction that is closest to the post-oscillation visual line direction as a latest visual line direction. An oscillation correction unit 8 projects a visual line direction component of the visual line direction after the oscillation to the latest visual line direction, corrects Doppler information on the basis of the projected visual line direction component, and calculates a Doppler velocity after the oscillation correction.

Description

  The present invention relates to a wind measuring device that measures wind at a remote point, and more particularly to a technique for reducing deterioration in wind measurement accuracy due to shaking of a device or a platform on which the device is mounted.

  Conventionally, devices such as Doppler radar, wind profiler, Doppler lidar, and Doppler soda have been used as devices for measuring wind at remote points. These devices emit electromagnetic waves and sound waves in space, receive reflected waves due to raindrops, atmospheric turbulence, and the like, and calculate the wind direction and wind speed of the wind in the atmosphere from the Doppler frequency of the received signal.

  Hereinafter, the Doppler lidar will be described as an example. What is directly measured by the Doppler lidar is a gaze direction component obtained by projecting wind in the atmosphere in the direction of the transmission or reception beam. The gaze direction components in different directions are measured, and the wind direction and the wind speed are calculated by performing an operation such as a VAD (Velocity Azimuth Display) method using the components.

  In addition to what is fixed on the ground, for example, as shown in Non-Patent Document 1, such a wind measuring device is mounted on a mobile platform such as a ship or an aircraft. In general, such a mobile platform is not only spontaneously moved but also moved under the influence of the outside world such as wind and waves, that is, shakes. Therefore, for example, as shown in Patent Document 1, a motion detection device is added, and the motion information obtained therefrom, that is, the motion angle such as the roll angle, the pitch angle, the yaw angle, the angular velocity, and the angular acceleration information are used. The movement of the platform is canceled to compensate for the fluctuations received by the robot, and the measurement data including the influence of the fluctuations is corrected in consideration of the amount of rotation and movement caused by the fluctuations.

JP-A-2005-241441

L. Tian, “3D WIND RETRIVAL FROM DOWNWARD CONVERSAL SCANNING AIRBORN DOPPLERADAR,” 35th, Conference on Radar Metrology, 2011.

  However, when correcting measurement data that includes the effects of shaking, if the shaking is relatively small, the effects of shaking are reduced by performing shaking correction that cancels the shaking using the shaking information. However, when the sway is relatively large, the swaying may leave the desired observation region and observe regions with different wind characteristics. For this reason, in the VAD processing or the like in which the wind in the predetermined observation area is considered to be uniform and the line-of-sight direction component in the area needs to be measured, the accuracy of the line-of-sight direction component deteriorates, resulting in wind measurement. There was a problem that accuracy deteriorated.

  The present invention has been made in order to solve the above-described problems, and an object of the present invention is to obtain a wind measuring device capable of suppressing deterioration of wind measuring accuracy even when a fluctuation is relatively large.

  The wind measuring apparatus according to the present invention measures the wind direction wind speed at a remote point based on a Doppler velocity obtained from a Doppler frequency of a received signal that is received by being reflected by a target by radiating electromagnetic waves or sound waves to a space. A measurement device, a spectrum calculation unit that calculates a Doppler spectrum by frequency-converting a received signal, an integration processing unit that incoherently integrates the Doppler spectrum, and a signal intensity, a Doppler velocity, and a Doppler velocity from the Doppler spectrum after integration. The Doppler information calculation unit for estimating Doppler information including at least one of the widths, the antenna for radiating electromagnetic waves or sound waves based on the predetermined antenna control specifications, beam scanning, and a predetermined time An antenna controller that outputs beam scanning angle information at intervals, and a radio wave or sound wave A motion detection unit that detects motion information including at least one of a rocking angle, an angular velocity, and an angular acceleration of a platform that holds the device and a receiving device that receives a signal reflected by the target; Using a beam direction setting unit that calculates line-of-sight direction and distance information obtained when beam scanning is performed by controlling the antenna based on antenna control specifications, beam scanning angle information, shaking information, and line-of-sight direction and distance information are used. The direction of the line of sight that is originally directed and the direction of the post-sway gaze that is the direction of the line of sight that is actually directed are obtained, and the direction of the line of sight that is originally directed closest to the direction of the line of sight after the swing is determined as the latest line of sight. The motion correction point calculation unit to calculate and the gaze direction component of the post-shake gaze direction are projected to the latest gaze direction, the Doppler information is corrected based on the projected gaze direction component, and the post-shake correction A fluctuation correction unit that calculates a plastic velocity, a wind information calculation unit that calculates wind information including at least one of a wind direction and a wind velocity in a predetermined observation area based on the Doppler velocity after fluctuation correction and beam scanning angle information. Is.

  The wind measuring device according to the present invention calculates the gaze direction that is originally directed closest to the post-sway gaze direction as the latest gaze direction, projects the gaze direction component of the post-sway gaze direction to the latest gaze direction, and projects the projected gaze direction Since the Doppler information is corrected based on the direction component, it is possible to reduce deterioration in accuracy of the line-of-sight direction component after shake correction and to ensure wind measurement accuracy.

It is a block diagram which shows the wind measuring device by Embodiment 1 of this invention. It is explanatory drawing which shows typically the wind measurement by the wind measuring device of this invention. It is explanatory drawing which shows typically the process which correct | amends the gaze direction component which received the influence of the fluctuation. It is explanatory drawing which shows typically the fluctuation correction by the wind measuring device of Embodiment 1 of this invention. It is a block diagram which shows the wind measuring device by Embodiment 2 of this invention. It is explanatory drawing which shows typically the fluctuation correction by the wind measuring device of Embodiment 2 of this invention. It is a block diagram which shows the wind measuring device by Embodiment 3 of this invention. It is explanatory drawing which shows typically the fluctuation correction by the wind measuring device of Embodiment 3 of this invention. It is a block diagram which shows the wind measuring device by Embodiment 4 of this invention. It is explanatory drawing which shows typically the fluctuation correction by the wind measuring device of Embodiment 4 of this invention. It is a block diagram which shows the wind measuring device by Embodiment 5 of this invention. It is a block diagram which shows the wind measuring device by Embodiment 6 of this invention.

Embodiment 1 FIG.
1 is a block diagram showing a wind measuring apparatus according to Embodiment 1 of the present invention.
1 includes a spectrum calculation unit 1, an integration processing unit 2, a Doppler information calculation unit 3, an antenna control unit 4, a fluctuation detection unit 5, a beam direction setting unit 6, a fluctuation correction point calculation unit 7, and a fluctuation correction. Unit 8 and a wind information calculation unit 9.

  The spectrum calculation unit 1 is a processing unit that performs a Fourier transform on the received signal to obtain a spectrum. The integration processing unit 2 is a processing unit that incoherently integrates the (power) spectrum output from the spectrum calculation unit 1 by a predetermined number. The Doppler information calculation unit 3 is a processing unit that performs frequency analysis on the integrated power spectrum output from the integration processing unit 2 and calculates Doppler speed, speed width, signal strength, and the like as Doppler information. The antenna control unit 4 controls the antenna device based on specifications such as an elevation angle, an azimuth angle, and an antenna scanning speed for observing a predetermined observation region set in advance, and the antenna device is directed at every predetermined timing. A processing unit that outputs information such as an elevation angle and an azimuth angle. The motion detection unit 5 includes, for example, a gyro sensor that detects and outputs the motion of the platform, a GPS (Global Positioning System) that outputs the position of the platform, a magnetic compass that outputs orientation information, and the like. It is a processing unit that outputs shaking information such as a shaking angle.

  The beam direction setting unit 6 calculates and outputs the elevation angle, the azimuth angle, and the observation point position of each line-of-sight direction component in the predetermined observation area, which is necessary for the wind information calculation unit 9 in the subsequent stage, based on preset specifications. It is a processing unit. The shake correction point calculation unit 7 uses the elevation angle and azimuth information from the antenna control unit 4, the platform shake information from the shake detection unit 5, and the predetermined observation point information from the beam direction setting unit 6. It is a processing unit that calculates and outputs a predetermined observation point that should be corrected for the observation direction actually observed under the influence. The shaking correction unit 8 is a processing unit that projects the gaze direction component (radial velocity component) after shaking input from the Doppler information calculation unit 3 in the correction direction input from the shaking correction point calculation unit 7. The wind information calculation unit 9 is a processing unit that calculates the wind direction and wind speed in a predetermined observation region using the line-of-sight direction component after shake correction input from the shake correction unit 8 by, for example, the VAD method.

Next, the operation of the first embodiment will be described. Note that the wind information calculation unit 9 is a processing unit that performs arithmetic processing such as general VAD, and thus a detailed description of the calculation method is omitted.
The spectrum calculation unit 1 receives a reflected wave from an aerosol that emits a light pulse into the atmosphere and then moves in the same manner as the wind in the atmosphere, and receives the signal after A / D conversion at a predetermined sampling frequency. Is entered. The spectrum calculation unit 1 cuts out a portion corresponding to a predetermined distance resolution from the received signal and performs a Fourier transform (specifically, FFT (Fast Fourier Transform) processing) to calculate a power spectrum, and an integration process Output to part 2.

  The integration processing unit 2 stores the power spectrum input from the spectrum calculation unit 1, performs integration (incoherent integration) processing using a predetermined number of power spectra, and outputs the integrated power spectrum as Doppler information. Output to the calculation unit 3. The Doppler information calculation unit 3 calculates Doppler information such as signal intensity, Doppler velocity, and Doppler velocity width by the moment method for the integrated power spectrum input from the integration processing unit 2 and outputs the Doppler information to the fluctuation correction unit 8. To do. Here, the Doppler information in the line-of-sight direction is obtained by the moment method, but a pulse pair method for obtaining Doppler information from the amount of change in phase between pulses before integration may be used.

  The antenna control unit 4 controls the antenna based on antenna scanning parameters such as preset elevation angle, azimuth angle, and antenna scanning speed, and includes an elevation direction and an azimuth direction in which the antenna is actually directed at predetermined time intervals. Beam scanning angle information is detected and output to the fluctuation correction point calculator 7. In the motion detection unit 5, motion information such as the platform position, orientation, platform roll angle, pitch angle, yaw angle, angular velocity in each axis direction, and angular acceleration detected by a gyro sensor, a magnetic compass, GPS, etc. It outputs to the fluctuation correction point calculation part 7 for every space | interval. Note that the output interval of the shaking information is equal to or less than the output interval of the Doppler information output by the Doppler information calculation unit 3. In the beam direction setting unit 6, it is necessary for the wind information calculation unit 9 to calculate one wind information based on preset antenna scanning specifications and wind measurement device specifications (pulse width, pulse repetition period, etc.). The beam pointing direction and distance information of the line-of-sight direction component in one observation period are calculated and output to the fluctuation correction point calculation unit 7.

  Based on the beam scanning angle information from the antenna control unit 4, the shaking information from the shaking detection unit 5, and the beam pointing / distance information from the beam direction setting unit 6, the shaking correction point calculation unit 7 is actually directed by shaking. The angle difference between the current beam direction and the predetermined beam direction required by the wind information calculation unit 9 is calculated, then the direction with the smallest angle difference is selected, and the direction information and the shake information are output to the shake correction unit 8 To do. At this time, the angle difference can be obtained from the inner product of a predetermined beam direction set in advance and the beam direction actually directed after shaking.

The shake correction unit 8 uses the pre-correction beam scanning angle information input from the shake correction point calculation unit 7 and the Doppler information input from the Doppler information calculation unit 3 to change the gaze direction component after the shake in a predetermined direction. By projecting, the gaze direction component after shake correction is calculated and output to the wind information calculation unit 9. At this time, for the projection in the line-of-sight direction, for example, the rotation calculation in the three-axis (roll, pitch, yaw angle) direction described in Non-Patent Document 1 and the projection calculation using the angles before and after shaking are used. The angle before and after the oscillation is obtained from the output result of the oscillation correction point calculation unit 7.
Finally, the wind information calculation unit 9 calculates the wind direction and wind speed of the predetermined observation area by, for example, VAD calculation processing using the Doppler speed in each line-of-sight direction and the beam scanning angle after shake correction.

Next, problems related to the shake correction and the shake correction operation according to the first embodiment will be described with reference to a conceptual diagram.
FIG. 2 is a schematic diagram of wind measurement by the wind measuring device. As shown in the figure, it is assumed that the wind measuring device is subjected to fluctuations such as roll, pitch, yaw, surge, sway, and heave.
FIG. 3 schematically shows a process of correcting the line-of-sight direction component affected by the shaking.
In the figure, (a) in the upper stage represents a case where the fluctuation is relatively small, and (b) in the lower stage represents a case where the fluctuation is relatively large. Here, in order to simplify the description, translational motion is omitted.

  As shown in the upper part (a), when the fluctuation is relatively small, the line of sight in which the influence of the fluctuation is removed by rotating and projecting so as to cancel the fluctuation by using the fluctuation angle obtained from the fluctuation detection unit 5. A direction component is obtained. However, as shown in the lower row (b), when the fluctuation is relatively large, the spatial distance difference between the actually measured observation direction (observation point) and the desired observation direction (observation point) increases after the fluctuation. There is a possibility that the wind uniformity in the predetermined observation region assumed when calculating the wind information is not established, and the wind estimation accuracy is deteriorated. Furthermore, when the angle between the sight line direction after shaking and the original sight line direction is orthogonal, the correction itself cannot be performed.

FIG. 4 is a schematic diagram of shake correction according to the first embodiment. In the same figure, symbols (1) to (8) are preset gaze directions and their acquisition orders, and symbols A to C are gaze directions and their orders that are actually directed under the influence of shaking. Note that symbols D and subsequent are omitted.
First, assuming that the gaze direction component A is obtained by shaking when the gaze direction component originally in the direction (1) should be obtained, the shaking correction point calculation unit 7 rotates the predetermined gaze direction (1) by the shaking angle. The angle of the line-of-sight direction A is calculated. Next, the line-of-sight direction A and the predetermined line-of-sight directions (1) to (8) are formed from the inner product of the angle of the line-of-sight direction A and the angles calculated in advance in (1) to (8). Calculate the corner. Thereafter, a predetermined gaze direction component that has the smallest angle and is closest to the gaze direction A is extracted. In the example of FIG. 4, the line-of-sight direction (6) is extracted. Thereafter, the angle of the line-of-sight direction A and the angle of the line-of-sight direction (6) are output to the motion correction unit 8, and the motion correction unit 8 projects the velocity component in the direction of the line of sight (6). A necessary line-of-sight direction component is obtained. Similarly, the line-of-sight direction B projects to the line-of-sight direction (5), and the line-of-sight direction C projects to the line-of-sight direction (8).

  Note that, even if the line-of-sight direction components corresponding to all of the line-of-sight directions (1) to (8) cannot be obtained by the above processing, the VAD process does not require the line-of-sight direction components in all directions, and thus wind information calculation is performed. In section 9, an appropriate calculation result is obtained.

  As described above, in the first embodiment, the configuration is such that the gaze direction component after shaking is projected onto the gaze direction component in the closest direction among the predetermined gaze directions, so that the shaking is relatively large and after shaking. Even when the angle between the line-of-sight direction and the predetermined line-of-sight direction becomes large, the shake correction can be performed with high accuracy.

  As described above, according to the wind measuring apparatus of the first embodiment, based on the Doppler velocity obtained from the Doppler frequency of the received signal that radiates electromagnetic waves or sound waves to the space and is reflected by the target and received. A wind measuring device that measures the wind direction and wind speed at a remote point, from a spectrum calculation unit that calculates a Doppler spectrum by frequency-converting a received signal, an integration processing unit that incoherently integrates the Doppler spectrum, and a Doppler spectrum after integration , Doppler information calculation unit for estimating Doppler information including at least one of signal intensity, Doppler velocity and Doppler velocity width, and antenna for radiating electromagnetic wave or sound wave based on predetermined antenna control specifications An antenna controller that scans the beam and outputs beam scanning angle information at a predetermined time interval; Alternatively, a motion detection unit that detects motion information including at least one of a rocking angle, an angular velocity, and an angular acceleration of a platform that holds a radiation unit that emits sound waves and a receiving unit that receives a signal reflected by a target; and A beam direction setting unit for calculating a line-of-sight direction and distance information obtained when beam scanning is performed by controlling an antenna based on predetermined antenna control specifications, beam scanning angle information, shaking information, and line-of-sight direction And distance information are used to determine the originally directed line-of-sight direction and the post-sway gaze direction that is the actual directed line-of-sight direction, and the originally directed line-of-sight closest to the post-swing gaze direction The motion correction point calculation unit that calculates the direction as the closest gaze direction, and the gaze direction component of the post-sway gaze direction are projected to the latest gaze direction, and the Doppler is based on the projected gaze direction component The wind information including at least one of the wind direction and the wind speed in the predetermined observation area is calculated based on the shake correction unit that corrects the information and calculates the Doppler speed after the shake correction, the Doppler speed after the shake correction, and the beam scanning angle information. Since the wind information calculation unit is provided, it is possible to reduce deterioration in accuracy of the line-of-sight direction component after shake correction and to ensure wind measurement accuracy.

Embodiment 2. FIG.
In the first embodiment, the velocity component is projected in the predetermined beam line-of-sight direction closest to the beam line-of-sight direction after shaking, but is not the predetermined line-of-sight direction but the most in the predetermined observation region in which the wind direction and wind speed are regarded as uniform. Projection can be performed in a close observation direction, and such an example will be described as a second embodiment.

  FIG. 5 shows a block diagram for realizing the second embodiment. In the figure, an observation region setting unit 10 is a processing unit that calculates and outputs a predetermined observation region set in advance, and the latest fluctuation correction point calculation unit 11 is information on the elevation angle and azimuth angle of the beam from the antenna control unit 4. Using the platform motion information from the motion detection unit 5, the predetermined beam direction information from the beam direction setting unit 6, and the observation region information from the observation region setting unit 10, the observation is actually performed under the influence of the motion. The processing unit calculates the observation direction (point) in the observation region closest to the observation direction (point). Since the other configuration is the same as that of the first embodiment shown in FIG. 1, the same reference numerals are given to the corresponding portions and the description thereof is omitted.

Next, the operation of the second embodiment will be described. Note that the description of the same parts as those in the first embodiment will be omitted, and the parts different from those in the first embodiment will be described.
In the observation area setting unit 10, it is necessary for the wind information calculation unit 9 to calculate one-time wind information based on the preset antenna scanning specifications and the specifications of the wind measuring device (pulse width, pulse repetition period, etc.). The observation region in one observation cycle is calculated and output to the latest fluctuation correction point calculation unit 11. In the case of VAD, the observation area is represented by a circle (scanning circle).
Next, the latest shake correction point calculation unit 11 is actually directed by the shake based on the beam scanning angle information from the antenna control unit 4, the shake information from the shake detection unit 5, and the observation region information from the observation region setting unit 10. The beam direction in the observation region closest to the beam direction is calculated, and the azimuth information and the shaking information are output to the shaking correction unit 8.

FIG. 6 schematically shows the motion correction operation according to the second embodiment. In the present embodiment, each line-of-sight direction component after shaking is projected to the closest observation direction (point) on a predetermined observation area represented by a circle.
As a method of obtaining the closest observation direction, for example, there is a method of obtaining a perpendicular line descending on the circumference of a scanning circle constituted by range bins equidistant from the observation point (range bin) after shaking for each range bin. In addition, as a method of obtaining different closest observation directions, for example, observation directions are provided on a predetermined observation area at intervals shorter than the original predetermined observation direction, and each observation point and the gaze direction after shaking are There is a method for extracting the observation point with the smallest angle.

  As described above, in the second embodiment, the line-of-sight direction component after shaking is corrected so as to be projected onto the closest observation point in the predetermined observation region, so that the angle formed by both becomes the smallest, and the line-of-sight direction after correction The deterioration of component accuracy can be reduced most, and the deterioration of wind direction and wind speed estimation accuracy can be reduced most.

  As described above, according to the wind measuring apparatus of the second embodiment, based on the Doppler velocity obtained from the Doppler frequency of the received signal that radiates electromagnetic waves or sound waves to the space and is reflected by the target and received. A wind measuring device that measures the wind direction and wind speed at a remote point, from a spectrum calculation unit that calculates a Doppler spectrum by frequency-converting a received signal, an integration processing unit that incoherently integrates the Doppler spectrum, and a Doppler spectrum after integration , Doppler information calculation unit for estimating Doppler information including at least one of signal intensity, Doppler velocity and Doppler velocity width, and antenna for radiating electromagnetic wave or sound wave based on predetermined antenna control specifications An antenna controller that scans the beam and outputs beam scanning angle information at a predetermined time interval; Alternatively, a motion detection unit that detects motion information including at least one of a rocking angle, an angular velocity, and an angular acceleration of a platform that holds a radiation unit that emits sound waves and a receiving unit that receives a signal reflected by a target; and A beam direction setting unit for calculating a line-of-sight direction and distance information obtained when beam scanning is performed by controlling an antenna based on predetermined antenna control specifications, and a predetermined observation area based on predetermined antenna control specifications. An observation area setting unit that calculates and outputs this as predetermined observation area information, beam scanning angle information, shaking information, line-of-sight direction and distance information, and predetermined observation area information, and a predetermined originally directed Obtain the gaze direction on the observation area and the post-sway gaze direction that is the direction of the gaze that is actually directed, and the gaze on the predetermined observation area that is closest to the post-sway gaze direction The most recent motion correction point calculation unit that calculates the direction as the most recent gaze direction, and the gaze direction component of the post-shake gaze direction are projected to the most recent gaze direction, the Doppler information is corrected based on the projected gaze direction component, and after the motion correction A fluctuation correction unit that calculates the Doppler speed, a wind information calculation part that calculates wind information including at least one of the wind direction and the wind speed of the predetermined observation area based on the Doppler speed after the fluctuation correction and the beam scanning angle information. Therefore, it is possible to reduce deterioration in accuracy of the line-of-sight direction component after shake correction and ensure wind measurement accuracy.

Embodiment 3 FIG.
In the first embodiment and the second embodiment, the velocity component is projected in the predetermined beam viewing direction (point) close to the beam viewing direction (point) after shaking, but the closest altitude viewing direction component is projected. This will be described below as a third embodiment.

  FIG. 7 shows a block diagram for realizing the third embodiment. In the figure, a recent altitude fluctuation correction point calculation unit 12 includes beam elevation angle and azimuth information from the antenna control unit 4, platform fluctuation information from the fluctuation detection unit 5, and a predetermined line of sight from the beam direction setting unit 6. A processing unit that uses the direction information to calculate the observation direction (point) in the observation area closest to the observation direction (point) that is actually observed under the influence of shaking and the closest altitude. is there. Since the other configuration is the same as that of the first embodiment shown in FIG. 1, the same reference numerals are given to the corresponding portions and the description thereof is omitted.

Next, the operation of the third embodiment will be described.
The recent altitude fluctuation correction point calculation unit 12 is actually directed by fluctuation based on the beam scanning angle information from the antenna control unit 4, the fluctuation information from the fluctuation detection unit 5, and the beam pointing / distance information from the beam direction setting unit 6. The angle difference between the current beam direction and the predetermined beam direction required by the wind information calculation unit 9 is calculated, and then the direction with the smallest angle difference is selected. Also, the altitude obtained from the observed value after shaking and the altitude of a predetermined observation point (range bin) obtained when observing the predetermined beam direction are calculated. Finally, the line-of-sight direction before and after shaking and each altitude information are output to the shaking correction unit 8.

  FIG. 8 schematically shows the motion correction operation according to the third embodiment. In the first embodiment or the second embodiment, the velocity component of each range bin is projected to the nearest corresponding range bin by the shake correction (broken line). On the other hand, in the present embodiment, projection is performed to a point having the closest altitude as indicated by a solid arrow.

  In general, horizontal winds are superior to vertical winds, and horizontal winds are said to change with altitude. There is a possibility that it can be reproduced more accurately.

  As described above, in the third embodiment, the line-of-sight direction component after shaking is corrected using the closest predetermined observation direction and the closest altitude component, so that the distribution of the wind altitude direction can be accurately reproduced. Even if there is fluctuation, the wind direction and wind speed in the desired observation area can be correctly estimated.

  As described above, according to the wind measurement device of the third embodiment, based on the Doppler velocity obtained from the Doppler frequency of the received signal that radiates electromagnetic waves or sound waves to the space and is reflected by the target and received. A wind measuring device that measures the wind direction and wind speed at a remote point, from a spectrum calculation unit that calculates a Doppler spectrum by frequency-converting a received signal, an integration processing unit that incoherently integrates the Doppler spectrum, and a Doppler spectrum after integration , Doppler information calculation unit for estimating Doppler information including at least one of signal intensity, Doppler velocity and Doppler velocity width, and antenna for radiating electromagnetic wave or sound wave based on predetermined antenna control specifications An antenna controller that scans the beam and outputs beam scanning angle information at a predetermined time interval; Alternatively, a motion detection unit that detects motion information including at least one of a rocking angle, an angular velocity, and an angular acceleration of a platform that holds a radiation unit that emits sound waves and a receiving unit that receives a signal reflected by a target; and A beam direction setting unit for calculating a line-of-sight direction and distance information obtained when beam scanning is performed by controlling an antenna based on predetermined antenna control specifications, beam scanning angle information, shaking information, and line-of-sight direction And the distance information are used to determine the gaze direction that is originally directed or the gaze direction on the predetermined observation area and the post-sway gaze direction that is the actual gaze direction. A near-altitude motion correction point calculation unit that calculates a near-eye-gaze direction that is closest to the post-sway gaze direction as the latest gaze direction, and a gaze in the post-sway gaze direction The direction component is projected in the latest line-of-sight direction, the Doppler information is corrected based on the projected line-of-sight direction component, and the Doppler speed after shake correction is calculated, the Doppler speed after shake correction, and the beam scanning angle information. Based on this, it is equipped with a wind information calculation unit that calculates wind information including at least one of the wind direction and the wind speed of the predetermined observation area, so that the accuracy of the gaze direction component after shake correction is reduced and wind measurement accuracy is ensured can do.

Embodiment 4 FIG.
In the first to third embodiments, the beam line-of-sight direction (point) after shaking is projected to the near direction (point) in the predetermined observation area, but the observation area is matched to each beam line-of-sight direction after shaking. And can be projected in a near direction (point) within a new observation region, which will be described below as a fourth embodiment.

  FIG. 9 is a block diagram for realizing the fourth embodiment. In the figure, a new observation region setting unit 13 includes beam elevation angle and azimuth information from the antenna control unit 4, platform shaking information from the shaking detection unit 5, and predetermined gaze direction information from the beam direction setting unit 6. Is a processing unit that sets a new observation region according to the line-of-sight direction obtained by directing by shaking and outputs it to the shaking correction point calculating unit 7a. Further, the shake correction point calculation unit 7a includes elevation angle and azimuth information from the antenna control unit 4, platform shake information from the shake detection unit 5, predetermined observation point information from the beam direction setting unit 6, and new observations. Using the observation area information from the area setting unit 13, a processing unit that calculates and outputs a predetermined observation point that should correct the observation direction actually observed under the influence of shaking. Since the other configuration is the same as that of the first embodiment shown in FIG. 1, the same reference numerals are given to the corresponding portions and the description thereof is omitted.

Next, the operation of the fourth embodiment will be described.
The new observation region setting unit 13 uses the beam elevation angle and azimuth information from the antenna control unit 4, platform motion information from the motion detection unit 5, and predetermined gaze direction information from the beam direction setting unit 6, Accumulate azimuth that is actually directed by shaking. After that, at the timing of calculating one wind information (wind direction and wind speed), a new observation area (circle) centered on the sensor position is assumed with respect to the actual observation direction accumulated so far, and each observation is the most The observation area close to the direction is output as the new observation area to the fluctuation correction point calculation unit 7a.

FIG. 10 schematically shows the motion correction operation according to the fourth embodiment. In the figure, the broken line indicates a predetermined observation area (circle), and the alternate long and short dash line indicates a new observation area (circle). If the observation value of the gaze direction away from the gaze direction data is obtained while acquiring the gaze direction data of the predetermined observation area, the new observation area setting unit 13 sets the obtained gaze direction component at the center of the sensor position. Then, fitting is performed on observation areas with different elevation angles, and the observation area that best matches is extracted as a new observation area. Thereafter, the shake correction point calculation unit 7a calculates the angle formed by the actually directed line-of-sight direction component and the line-of-sight direction component in the new observation area, and projects the image to the line-of-sight direction with the smallest angle, after the shake correction. Is obtained.
At this time, as a method of extracting a new observation region, for example, a method based on an arbitrary observation region and a method of least squares using a real line-of-sight direction is conceivable.

  As described above, in the fourth embodiment, each observation value is projected onto the observation region that most closely matches the line-of-sight direction component acquired after shaking, so that the correction amount is minimized and the error of each line-of-sight direction component after correction is minimized. It is possible to reduce the accuracy deterioration of the final wind information (wind direction and wind speed).

  As described above, according to the wind measuring apparatus of the fourth embodiment, based on the Doppler velocity obtained from the Doppler frequency of the received signal that radiates electromagnetic waves or sound waves to the space and is reflected by the target and received. A wind measuring device that measures the wind direction and wind speed at a remote point, from a spectrum calculation unit that calculates a Doppler spectrum by frequency-converting a received signal, an integration processing unit that incoherently integrates the Doppler spectrum, and a Doppler spectrum after integration , Doppler information calculation unit for estimating Doppler information including at least one of signal intensity, Doppler velocity and Doppler velocity width, and antenna for radiating electromagnetic wave or sound wave based on predetermined antenna control specifications An antenna controller that scans the beam and outputs beam scanning angle information at a predetermined time interval; Alternatively, a motion detection unit that detects motion information including at least one of a rocking angle, an angular velocity, and an angular acceleration of a platform that holds a radiation unit that emits sound waves and a receiving unit that receives a signal reflected by the target. A beam direction setting unit for calculating a line-of-sight direction and distance information obtained when beam scanning is performed by controlling an antenna based on predetermined antenna control specifications, beam scanning angle information, shaking information, and beam Based on the pointing / distance information, a new observation area corresponding to the direction of the line of sight that is actually pointing is calculated, and this is output as new observation area information, beam scanning angle information, and shaking information , The gaze direction and distance information, and the new observation area information, the gaze direction on the new observation area that is closest to the post-stabilization gaze direction, which is the direction of the gaze that is actually directed, is maximized. The motion correction point calculation unit that calculates the gaze direction and the gaze direction component of the post-sway gaze direction are projected to the latest gaze direction, the Doppler information is corrected based on the projected gaze direction component, and the Doppler velocity after motion compensation is calculated. And a wind information calculation unit for calculating wind information including at least one of the wind direction and the wind speed of the predetermined observation area based on the beam correction angle and the Doppler speed after the shake correction and the beam scanning angle information. It is possible to reduce the deterioration in accuracy of the subsequent line-of-sight direction component and ensure wind measurement accuracy.

Embodiment 5 FIG.
In the above first to fourth embodiments, the wind measurement device scans the antenna based on the predetermined antenna scanning specifications and obtains the observed value. However, the antenna scanning specifications are changed depending on the state of shaking. This is also described below as a fifth embodiment.

  FIG. 11 is a block diagram for realizing such an embodiment. In the figure, a new observation specification setting unit 14 includes a beam elevation angle and azimuth information from the antenna control unit 4, platform motion information from the motion detection unit 5, and a predetermined line-of-sight direction from the beam direction setting unit 6. Using information, determine the suitability between the gaze direction actually obtained by shaking and the predetermined observation area, and set new observation specifications so that the gaze direction component after shaking falls within the predetermined observation area. It is a processing unit that calculates and outputs to the antenna control unit 4. In addition, the new observation specification setting unit 14 is configured to output the new observation specification as observation region information to the fluctuation correction point calculation unit 7b. The shake correction point calculation unit 7b includes elevation angle and azimuth information from the antenna control unit 4, platform shake information from the shake detection unit 5, predetermined observation point information from the beam direction setting unit 6, and new observation specifications. Using the observation area information from the setting unit 14, a processing unit that calculates and outputs a predetermined observation point for correcting the observation direction actually observed under the influence of shaking. Since the other configuration is the same as that of the first embodiment shown in FIG. 1, the same reference numerals are given to the corresponding portions and the description thereof is omitted.

Next, the operation of the fifth embodiment will be described.
The new observation specification setting unit 14 uses the beam elevation angle and azimuth information from the antenna control unit 4, the platform shaking information from the shaking detection unit 5, and the predetermined gaze direction information from the beam direction setting unit 6. Then, the fluctuation component in each axial direction is calculated. Thereafter, the beam directing direction is calculated so as to cancel the fluctuation component, and is output to the antenna control unit 4. Here, the beam directing that cancels the fluctuation component is a beam directing in which the average or the sum of the fluctuation components (swing angles) in the respective axial directions is 0 degree or a predetermined value or less. The shake correction point calculation unit 7b obtains the line-of-sight direction component after shake correction based on the observation area information from the new observation specification setting unit 14, but the antenna control unit 4 determines the beam direction direction so as to cancel the shake component. Since the control is performed, the output of the new observation specification setting unit 14 may not be used when high accuracy is not required.

  As described above, in the fifth embodiment, the antenna control is performed so as to cancel the influence according to the state of shaking, so that the correction amount by the rotation / projection of the line-of-sight direction component can be reduced. It is possible to reduce the error related to the correction. In addition, because the antenna control is performed according to the fluctuation situation, the fluctuation correction amount of the gaze direction component can be kept almost constant regardless of the fluctuation situation, and the wind information (wind direction wind speed) ) The accuracy of the calculation result can be kept constant.

  As described above, according to the wind measuring apparatus of the fifth embodiment, the direction of the line of sight that is actually directed is originally directed based on the beam scanning angle information, the shaking information, and the beam pointing / distance information. It has a new observation parameter setting unit that calculates the beam orientation direction that cancels the oscillation component, and calculates the fluctuation component that is the difference between the line-of-sight direction component and the line-of-sight direction component. Therefore, in addition to the effects of the wind measurement devices according to the first to fourth embodiments, the correction amount due to the rotation and projection of the line-of-sight direction component can be reduced.

Embodiment 6 FIG.
In the first to fifth embodiments described above, the line-of-sight direction component for wind information calculation is obtained by correcting the line-of-sight direction component to an observation point as close as possible within the predetermined observation area regardless of the magnitude of the fluctuation. However, when the correction amount is large, the fluctuation component cannot be completely canceled, and an error occurs in the estimation of the line-of-sight direction component. As a result, the wind information estimation result deteriorates. In addition, the assumption of spatial uniformity in the observation region is not satisfied, and as a result, the wind information estimation result deteriorates. Therefore, it is possible to determine whether or not to perform the wind information calculation process from the obtained shaking information or the acquired gaze direction component observation value, which will be described below as a sixth embodiment.

  FIG. 12 is a block configuration diagram for realizing the sixth embodiment. In the figure, the absolute fluctuation component calculation unit 15 uses the beam scanning angle information from the antenna control unit 4, the fluctuation information from the fluctuation detection unit 5, and the beam pointing / distance information from the beam direction setting unit 6. It is a processing unit that calculates the absolute motion information of the platform and outputs it to the gaze direction component validity determination unit 16. The gaze direction component validity determination unit 16 includes the Doppler information from the Doppler information calculation unit 3 and the motion correction unit 8. Is a processing unit that determines whether or not the obtained line-of-sight direction component can be used for wind information calculation using post-correction Doppler velocity / beam scanning angle information, absolute motion information from the absolute motion component calculation unit 15, and the like. . Since the other configuration is the same as that of the first embodiment shown in FIG. 1, the same reference numerals are given to the corresponding portions and the description thereof is omitted.

Next, the operation of the sixth embodiment will be described.
The absolute fluctuation component calculation unit 15 is actually directed by the fluctuation based on the beam scanning angle information from the antenna control unit 4, the fluctuation information from the fluctuation detection unit 5, and the beam direction / distance information from the beam direction setting unit 6. The calculated beam direction, that is, the absolute motion component is calculated and output to the gaze direction component validity determination unit 16. Since this is the same as a part of the function of the fluctuation correction point calculation unit, both can be unified.

  Next, the gaze direction component validity determination unit 16 determines the state of shaking from the absolute motion information obtained from the absolute motion component calculation unit 15 and the Doppler information obtained from the Doppler information calculation unit 3, and the gaze direction component is the wind direction component. Determine whether the quality can be used for information calculation.

  As a method of determining the effectiveness of the gaze direction component, the oscillation angle obtained as absolute motion information is compared with a predetermined threshold value. There is a method of stopping output to the unit 9.

  As another method of determining the effectiveness of the gaze direction component, the angular velocity and / or the angular acceleration of the oscillation angle while obtaining one gaze direction component as absolute motion information is output and compared with a predetermined threshold value. If the threshold value is exceeded, there is a method in which it is determined that the change in shaking is large while obtaining the line-of-sight direction component, and the output to the wind information calculation unit 9 is stopped.

  As another method of determining the effectiveness of the gaze direction component, the translational motion component obtained as absolute motion information is compared with a predetermined threshold value.If the threshold value is exceeded, the observation area is enlarged, and the spatial uniformity of the wind There is a method of determining that the assumption is not satisfied and stopping the output to the wind information calculation unit 9.

  As another method for determining the effectiveness of the gaze direction component, the signal intensity obtained as the Doppler information is compared with a predetermined threshold value. There is a method of determining that the signal intensity has decreased without increasing, and stopping the output to the wind information calculation unit 9.

  Also, as a different gaze direction component validity determination method, the Doppler velocity width obtained as Doppler information is compared with a predetermined threshold value, and if it exceeds the threshold value, the fluctuation was large during the gaze direction component acquisition, so the Doppler velocity width There is a method of stopping the output to the wind information calculation unit 9 when it is determined that has spread.

  Further, as a method for determining the effectiveness of different gaze direction component, there is a method of using a spatial deviation of the gaze direction component after the shake correction. As an index indicating the spatial deviation of the line-of-sight direction component, for example, the center of gravity in the horizontal plane of the line-of-sight direction component at a certain altitude or distance is calculated, and the position of the center of gravity is compared with the sensor position to exceed the predetermined distance. In this case, there is a method in which the line-of-sight direction component is biased in the observation region and it is determined that there is a high possibility that the wind information calculation result has an error, and the output to the wind information calculation unit 9 is stopped.

  As described above, in the sixth embodiment, it is determined whether or not to use the obtained gaze direction component for wind information calculation based on the spatial deviation of the absolute motion component, Doppler information, and gaze direction component. Therefore, when the shaking is large and the quality of the line-of-sight direction component deteriorates, they can be rejected, and the deterioration of the accuracy of the wind information calculation result can be reduced.

  As described above, according to the wind measurement device of the sixth embodiment, when the angle between the originally directed line-of-sight direction and the actually directed line-of-sight direction is equal to or greater than a predetermined value, the correction in the shake correction unit A gaze direction component validity determination unit that selects previous Doppler information, and when the wind information calculation unit is equal to or greater than a predetermined value, the gaze direction is used instead of the post-shake correction Doppler velocity output from the shake correction unit. Since the output of the component validity determination unit is used, it is possible to reduce deterioration in accuracy of the wind information calculation result.

  Further, according to the wind measurement device of the sixth embodiment, when at least one of the angular velocity and the angular acceleration during obtaining one gaze direction component for detecting the shake information by the shake detection unit is equal to or greater than a predetermined threshold value, A gaze direction component validity determination unit that selects Doppler information before correction in the shake correction unit, and the wind information calculation unit, when the wind information calculation unit is equal to or greater than a predetermined threshold value, sets the Doppler speed after shake correction output from the shake correction unit. Instead, since the output of the line-of-sight direction component validity determination unit is used, deterioration in accuracy of the wind information calculation result can be reduced.

  In addition, according to the wind measurement device of the sixth embodiment, when the translation distance of the platform is equal to or greater than a predetermined threshold, the gaze direction component validity determination unit that selects the Doppler information before correction in the shake correction unit, In addition, since the wind information calculation unit uses the output of the gaze direction component validity determination unit instead of the post-motion correction Doppler velocity output from the motion correction unit when the wind information is equal to or greater than the predetermined threshold value, the wind information It is possible to reduce deterioration in accuracy of calculation results.

  Further, according to the wind measurement device of the sixth embodiment, when the signal intensity of the Doppler information obtained by the Doppler information calculation unit is less than a predetermined threshold, the line-of-sight direction component that selects the Doppler information before correction in the shake correction unit When the effectiveness determination unit is provided and the wind information calculation unit is less than the predetermined threshold, the output of the gaze direction component validity determination unit is used instead of the post-sway correction Doppler velocity output from the shake correction unit. As described above, it is possible to reduce deterioration in accuracy of the wind information calculation result.

  Further, according to the wind measurement device of the sixth embodiment, when the Doppler velocity width obtained by the Doppler information calculation unit is greater than or equal to a predetermined threshold, the gaze direction component effectiveness for selecting the Doppler information before correction in the shake correction unit When the wind information calculation unit includes a determination unit and the wind information calculation unit is equal to or greater than the predetermined threshold, the output of the gaze direction component validity determination unit is used instead of the post-shake correction Doppler velocity output from the shake correction unit. Therefore, it is possible to reduce deterioration in accuracy of the wind information calculation result.

  Further, according to the wind measurement device of the sixth embodiment, when the spatial deviation of the line-of-sight direction component after the shake correction in the shake correction unit is equal to or greater than a predetermined threshold, the line-of-sight direction for selecting the Doppler information before correction in the shake correction unit When the component validity determination unit is included and the wind information calculation unit is equal to or greater than a predetermined threshold, the output of the gaze direction component validity determination unit is used instead of the post-motion correction Doppler velocity output from the motion correction unit. Since it did in this way, the deterioration of the precision of a wind information calculation result can be reduced.

  In the present invention, within the scope of the invention, any combination of the embodiments, or any modification of any component in each embodiment, or omission of any component in each embodiment is possible. .

  1 spectrum calculation unit, 2 integration processing unit, 3 Doppler information calculation unit, 4 antenna control unit, 5 motion detection unit, 6 beam direction setting unit, 7, 7a, 7b motion correction point calculation unit, 8 motion correction unit, 9 wind Information calculation unit, 10 observation region setting unit, 11 latest shake correction point calculation unit, 12 recent altitude shake correction point calculation unit, 13 new observation region setting unit, 14 new observation specification setting unit, 15 absolute motion component calculation unit, 16 A gaze direction component validity determination unit.

Claims (11)

A wind measuring device that radiates electromagnetic waves or sound waves into space and measures the wind direction wind speed at a remote point based on the Doppler speed obtained from the Doppler frequency of the received signal reflected and received by the target,
A spectrum calculating unit for calculating a Doppler spectrum by frequency-converting the received signal;
An integration processing unit for incoherently integrating the Doppler spectrum;
From the Doppler spectrum after the integration, a Doppler information calculation unit that estimates Doppler information including at least one of signal intensity, Doppler velocity, and Doppler velocity width;
An antenna control unit for controlling the antenna for radiating the electromagnetic wave or the sound wave based on predetermined antenna control specifications, performing beam scanning, and outputting beam scanning angle information at predetermined time intervals;
Oscillation detection for detecting oscillation information including at least one of an oscillation angle, an angular velocity, and an angular acceleration of a platform holding the radiating means for emitting the electromagnetic wave or the sound wave and the receiving means for receiving the signal reflected by the target. And
A beam direction setting unit that calculates a line-of-sight direction and distance information obtained when the predetermined observation region is beam-scanned by controlling the antenna based on the predetermined antenna control specifications;
Using the beam scanning angle information, the shaking information, and the line-of-sight direction and distance information, an originally directed line-of-sight direction and a post-oscillation line-of-sight direction that is an actually directed line-of-sight direction are obtained, And a shake correction point calculation unit that calculates the gaze direction that is originally directed closest to the post-sway gaze direction as the latest gaze direction;
A gaze correction unit that projects the gaze direction component of the post-sway gaze direction to the nearest gaze direction, corrects the Doppler information based on the projected gaze direction component, and calculates a Doppler speed after shake correction;
Wind measurement, comprising: a wind information calculation unit that calculates wind information including at least one of a wind direction and a wind speed in the predetermined observation area based on the post-sway correction Doppler velocity and the beam scanning angle information. apparatus. A wind measuring device that radiates electromagnetic waves or sound waves into space and measures the wind direction wind speed at a remote point based on the Doppler speed obtained from the Doppler frequency of the received signal reflected and received by the target,
A spectrum calculating unit for calculating a Doppler spectrum by frequency-converting the received signal;
An integration processing unit for incoherently integrating the Doppler spectrum;
From the Doppler spectrum after the integration, a Doppler information calculation unit that estimates Doppler information including at least one of signal intensity, Doppler velocity, and Doppler velocity width;
An antenna control unit for controlling the antenna for radiating the electromagnetic wave or the sound wave based on predetermined antenna control specifications, performing beam scanning, and outputting beam scanning angle information at predetermined time intervals;
Oscillation detection for detecting oscillation information including at least one of an oscillation angle, an angular velocity, and an angular acceleration of a platform holding the radiating means for emitting the electromagnetic wave or the sound wave and the receiving means for receiving the signal reflected by the target. And
A beam direction setting unit that calculates a line-of-sight direction and distance information obtained when the predetermined observation region is beam-scanned by controlling the antenna based on the predetermined antenna control specifications;
An observation area setting unit that calculates the predetermined observation area based on the predetermined antenna control specifications and outputs the predetermined observation area information;
The beam scanning angle information, the shaking information, the line-of-sight direction and distance information, and the predetermined observation area information are used to actually direct the line-of-sight direction on the predetermined observation area. And a post-swing gaze direction that is a gaze direction that is present, and a most recent shake correction point calculation unit that computes the gaze direction on the predetermined observation region closest to the post-sway gaze direction as the latest gaze direction;
A gaze correction unit that projects the gaze direction component of the post-sway gaze direction to the nearest gaze direction, corrects the Doppler information based on the projected gaze direction component, and calculates a Doppler speed after shake correction;
A wind measurement device comprising: a wind information calculation unit configured to calculate wind information including at least one of a wind direction and a wind speed in a predetermined observation region based on the post-shake correction Doppler velocity and the beam scanning angle information. . A wind measuring device that radiates electromagnetic waves or sound waves into space and measures the wind direction wind speed at a remote point based on the Doppler speed obtained from the Doppler frequency of the received signal reflected and received by the target,
A spectrum calculating unit for calculating a Doppler spectrum by frequency-converting the received signal;
An integration processing unit for incoherently integrating the Doppler spectrum;
From the Doppler spectrum after the integration, a Doppler information calculation unit that estimates Doppler information including at least one of signal intensity, Doppler velocity, and Doppler velocity width;
An antenna control unit for controlling the antenna for radiating the electromagnetic wave or the sound wave based on predetermined antenna control specifications, performing beam scanning, and outputting beam scanning angle information at predetermined time intervals;
Oscillation detection for detecting oscillation information including at least one of an oscillation angle, an angular velocity, and an angular acceleration of a platform holding the radiating means for emitting the electromagnetic wave or the sound wave and the receiving means for receiving the signal reflected by the target. And
A beam direction setting unit that calculates a line-of-sight direction and distance information obtained when the predetermined observation region is beam-scanned by controlling the antenna based on the predetermined antenna control specifications;
Using the beam scanning angle information, the shaking information, and the line-of-sight direction and distance information, the line-of-sight direction that is originally directed or the line-of-sight direction on the predetermined observation region and the line-of-sight direction that is actually directed A most recent sway correction point calculation unit that obtains a certain post-sway gaze direction and calculates a gaze direction that is closest to the post-sway gaze direction and that is closest to the post-sway gaze direction as the latest gaze direction. When,
A gaze correction unit that projects the gaze direction component of the post-sway gaze direction to the nearest gaze direction, corrects the Doppler information based on the projected gaze direction component, and calculates a Doppler speed after shake correction;
A wind measurement device comprising: a wind information calculation unit configured to calculate wind information including at least one of a wind direction and a wind speed in a predetermined observation region based on the post-shake correction Doppler velocity and the beam scanning angle information. . A wind measuring device that radiates electromagnetic waves or sound waves into space and measures the wind direction wind speed at a remote point based on the Doppler speed obtained from the Doppler frequency of the received signal reflected and received by the target,
A spectrum calculating unit for calculating a Doppler spectrum by frequency-converting the received signal;
An integration processing unit for incoherently integrating the Doppler spectrum;
From the Doppler spectrum after the integration, a Doppler information calculation unit that estimates Doppler information including at least one of signal intensity, Doppler velocity, and Doppler velocity width;
An antenna control unit for controlling the antenna for radiating the electromagnetic wave or the sound wave based on predetermined antenna control specifications, performing beam scanning, and outputting beam scanning angle information at predetermined time intervals;
Oscillation for detecting oscillation information including at least one of an oscillation angle, an angular velocity, and an angular acceleration of a platform holding the radiating means for emitting the electromagnetic wave or the sound wave and the receiving means for receiving the signal reflected by the target. A detection unit;
A beam direction setting unit that calculates a line-of-sight direction and distance information obtained when the predetermined observation region is beam-scanned by controlling the antenna based on the predetermined antenna control specifications;
Based on beam scanning angle information, motion information, and beam pointing / distance information, a new observation area setting corresponding to the direction of the line of sight that is actually directed is calculated and this is output as new observation area information And
Using the beam scanning angle information, the shaking information, the gaze direction and distance information, and the new observation area information, the new observation that is closest to the post-swing gaze direction that is the direction of the gaze that is actually directed A motion correction point calculation unit that calculates the line-of-sight direction on the region as the latest line-of-sight direction;
A gaze correction unit that projects the gaze direction component of the post-sway gaze direction to the nearest gaze direction, corrects the Doppler information based on the projected gaze direction component, and calculates a Doppler speed after shake correction;
A wind measurement device comprising: a wind information calculation unit configured to calculate wind information including at least one of a wind direction and a wind speed in a predetermined observation region based on the post-shake correction Doppler velocity and the beam scanning angle information. . Based on the beam scanning angle information, the shaking information, and the beam pointing / distance information, the shaking component that is the difference between the viewing direction component between the actually directed viewing direction and the originally directed viewing direction is calculated. It has a new observation specification setting unit that calculates the beam pointing direction in the direction that cancels the shaking component,
The wind measuring device according to any one of claims 1 to 4, wherein the antenna control unit controls the antenna based on the beam directing direction. When the angle of the line-of-sight direction that is originally directed and the angle of the line-of-sight direction that is actually directed is a predetermined value or more, the line-of-sight direction component validity determination unit that selects Doppler information before correction in the motion correction unit,
And,
The wind information calculation unit uses the output of the gaze direction component validity determination unit in place of the post-shake correction Doppler velocity output from the shake correction unit when the wind information calculation unit is equal to or greater than the predetermined value. The wind measuring device according to claim 5. Gaze direction for selecting Doppler information before correction in the shake correction unit when at least one of angular velocity and angular acceleration during obtaining a gaze direction component for detecting shake information in the shake detection unit is greater than or equal to a predetermined threshold It has a component effectiveness judgment unit,
And,
The wind information calculation unit uses the output of the gaze direction component validity determination unit in place of the post-motion correction Doppler velocity output from the motion correction unit when the wind information calculation unit is equal to or greater than the predetermined threshold. The wind measuring device according to claim 5. When the translation distance of the platform is greater than or equal to a predetermined threshold, the gaze direction component validity determination unit that selects Doppler information before correction in the shake correction unit,
And,
The wind information calculation unit uses the output of the gaze direction component validity determination unit instead of the post-shake correction Doppler velocity output from the motion correction unit when the wind information calculation unit is equal to or greater than the predetermined threshold. The wind measuring device according to any one of claims 1 to 5. When the signal intensity of the Doppler information obtained by the Doppler information calculation unit is less than a predetermined threshold, the gaze direction component validity determination unit that selects the Doppler information before correction in the shake correction unit,
And,
The wind information calculation unit, when it is less than the predetermined threshold, uses the output of the gaze direction component validity determination unit instead of the post-shake correction Doppler velocity output from the shake correction unit. The wind measuring device according to any one of claims 1 to 5. When the Doppler velocity width obtained by the Doppler information calculation unit is equal to or greater than a predetermined threshold, a gaze direction component validity determination unit that selects Doppler information before correction in the shake correction unit,
And,
The wind information calculation unit uses the output of the gaze direction component validity determination unit in place of the post-motion correction Doppler velocity output from the motion correction unit when the wind information calculation unit is equal to or greater than the predetermined threshold. The wind measuring device according to claim 5. When the spatial bias of the gaze direction component after the shake correction in the shake correction unit is equal to or greater than a predetermined threshold, the gaze direction component validity determination unit that selects the Doppler information before correction in the shake correction unit,
And,
The wind information calculation unit uses the output of the gaze direction component validity determination unit in place of the post-motion correction Doppler velocity output from the motion correction unit when the wind information calculation unit is equal to or greater than the predetermined threshold. The wind measuring device according to claim 5.

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