Radar inversion method and device, equipment and storage medium
By determining the radar inversion configuration parameters, the radar can be placed vertically or horizontally for inversion, integrating wind field and visibility inversion. This solves the problem of time-consuming multiple inversions in existing technologies, and realizes the efficient integrated design and flexible deployment of the radar.
Patent Information
- Application Number
- CN202511751979.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-26
- Publication Date
- 2026-02-24
AI Technical Summary
Existing radar inversion methods require multiple data acquisitions and inversions, which is time-consuming and reduces radar monitoring efficiency.
By acquiring the radar inversion configuration parameters, it is determined whether they are equal to the preset values. If they are equal, the radar is controlled to be placed in the vertical direction to perform vertical echo signal inversion; otherwise, it is placed in the horizontal direction to perform horizontal echo signal inversion. The vertical and horizontal wind field and visibility inversion are integrated to achieve integrated design.
The integration of radar parameter inversion has been achieved, improving the radar's flexible deployment and measurement efficiency, meeting the mobility and flexibility requirements of urban wind field and meteorological detection, and realizing the miniaturization and lightweighting of lidar.
Smart Images
Figure CN121559545A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of radar observation technology, and in particular to a radar inversion method, apparatus, equipment and storage medium. Background Technology
[0002] In today's rapidly developing low-altitude economy, drone logistics and aerial travel are becoming increasingly frequent. The ever-changing low-altitude meteorological conditions act like hidden "reefs," constantly threatening flight safety. Laser wind-measuring radar, as a high-precision, multi-range simultaneous wind sensor, can detect changes in wind speed and direction, as well as weather patterns, in low-altitude areas in advance. Radar inversion refers to the process of using radar-observed echo signals (such as echo intensity, phase, frequency shift, and polarization characteristics) combined with radar operating principles and atmospheric physical models to inversely solve for the physical parameters of the atmosphere or target using mathematical or statistical methods. By acquiring radar observation data through laser wind-measuring radar and then using this data for inversion to obtain the data needed by users, crucial meteorological data can be provided, playing a role in environmental monitoring and other fields.
[0003] However, current radar inversion methods require users to acquire and calculate specific data for a particular physical parameter. If multiple physical parameters are needed, data acquisition and inversion must be performed multiple times, which may be time-consuming and reduce the efficiency of radar monitoring. Summary of the Invention
[0004] To help solve the problem of time-consuming and reduced radar monitoring efficiency caused by multiple data acquisitions and inversions, this application provides a radar inversion method, apparatus, equipment, and storage medium.
[0005] In a first aspect, this application provides a radar inversion method, employing the following technical solution: the method includes: Obtain radar inversion configuration parameters and determine whether the radar inversion configuration parameters are equal to preset parameter values, wherein the radar inversion configuration parameters are used to determine the placement position of the laser wind radar during radar inversion; If the radar inversion configuration parameters are equal to the preset parameter values, the radar is controlled to be placed in the vertical direction to acquire the vertical echo signal, and the parameters of the laser wind measuring radar in the vertical direction are inverted based on the vertical echo signal. The vertical echo signal is the radar echo signal acquired by the laser wind measuring radar in the vertical direction. If the radar inversion configuration parameters are not equal to the preset parameter values, the radar is controlled to be placed in the horizontal direction to acquire the horizontal echo signal, and the parameters of the laser wind measuring radar in the horizontal direction are inverted based on the horizontal echo signal. The horizontal echo signal is the radar echo signal acquired by the laser wind measuring radar in the horizontal direction. Wherein, the vertical direction is the direction in which the central axis of the laser wind measuring radar is perpendicular to the ground plane, and the horizontal direction is the direction in which the central axis of the laser wind measuring radar is horizontal to the ground plane.
[0006] In one specific implementation scheme, the parameter inversion of the vertical direction of the laser wind radar based on the vertical echo signal includes: The laser wind radar is divided into several vertical range gates along its central axis, with each vertical range gate corresponding to a different height level; the acquired vertical echo signal includes the wavelengths of several radar beams at different vertical range gates and the vertical signal frequency shift. The radial wind speed of each radar beam is calculated based on the wavelength of the radar laser wave at different vertical distances and the vertical signal frequency shift. The calculation method includes: ; in, Indicates the first One radar beam Indicates the first A vertical distance door, Indicates the first The vertical distance to the door position of the first The wavelength of a radar beam Indicates the first The vertical distance to the door position of the first Vertical signal frequency shift of a radar beam Indicates the first The vertical distance to the door position of the first Radial wind speed of each radar beam; The first horizontal wind speed and first horizontal wind direction in the vertical direction at different vertical distance gate positions are calculated based on the radial wind speed of each radar beam at different vertical distance gate positions, the angle between each radar beam and the central axis of the laser wind measuring radar, and the azimuth angle of each radar beam. The calculation method includes: ; ; ; in, Indicates the first The first horizontal wind speed at each vertical distance from the door has three components: horizontal east-west relative to the ground, horizontal north-south relative to the ground, and vertical relative to the ground. This indicates the angle between each radar beam and the central axis of the laser wind measuring radar. Indicates the first The azimuth angle of each radar beam. Indicates the first The vertical distance to the door position of the first Radial wind speed of each radar beam Indicates the first The first horizontal wind speed at a vertical distance from the door position. Indicates the first The first horizontal wind direction at the vertical distance from the door position. This indicates left division of a matrix.
[0007] In one specific implementation, the vertical echo signal also includes the vertical signal carrier-to-noise ratio and vertical signal strength value of each radar beam at different vertical range gate positions; After calculating the first horizontal wind speed and first horizontal wind direction in the vertical direction based on the radial wind speed of each radar beam at different vertical distances, the angle between each radar beam and the central axis of the laser wind measuring radar, and the azimuth angle of each radar beam, the method further includes: The atmospheric extinction coefficient at different vertical range gate positions is calculated based on the vertical signal-to-noise ratio of each radar beam at different vertical range gate positions and the radar's preset parameters. The calculation methods include: ; ; ; in, This represents the signal-to-noise ratio in the vertical direction of the i-th radar beam. Indicates system efficiency. This represents the single pulse energy output by the radar. This represents the atmospheric backscattering coefficient of the i-th radar beam. Indicates the wavelength of radar laser waves, Denotes Planck's constant. Indicates the bandwidth of the detector circuit. This represents the atmospheric extinction coefficient of the i-th radar beam. This represents the telescope weighting function. It is a constant. The extinction backscattering ratio is represented by z, which represents the vertical distance from the gate position. This represents the atmospheric extinction coefficient at a z-vertical distance from the door position; The vertical visibility of the laser wind radar is calculated based on the atmospheric extinction coefficient and vertical signal intensity at different vertical distances from the gate. The calculation methods include:
[0008] in, This represents the signal strength value in the vertical direction at a z-distance from the gate position. This represents the signal strength value in the vertical direction at the starting position of the gate. This represents the atmospheric extinction coefficient at a vertical distance from the starting position of the door. This represents the distance from the starting position of the vertical distance gate to the radar. This represents the signal strength value in the vertical direction at the vertical distance from the gate termination position.
[0009] In one specific implementation, after calculating the vertical visibility of the laser wind radar based on the atmospheric extinction coefficient and vertical signal intensity value at different vertical distances from the gate location, the method further includes: Determine whether each radar beam passes through clouds; If the radar beam passes through the clouds, the cloud base height is calculated based on the vertical signal-to-noise ratio of the current radar beam at different vertical distance gate positions.
[0010] In one specific implementation scheme, the calculation of the cloud base height based on the vertical signal-to-noise ratio of the current radar beam at different vertical range gate positions includes: Plot the carrier-to-noise ratio curves based on the vertical signal carrier-to-noise ratio of the current radar beam at different vertical range gate positions. Find the location of the secondary peak of the carrier-to-noise ratio curve based on the carrier-to-noise ratio curve; Calculate the first-order difference of the carrier-to-noise ratio curve, and find the radial distance corresponding to the position closest to the second peak position where the first-order difference is greater than 0. The radial distance is the distance between the radar beam direction and the laser wind measuring radar. The cloud base height is calculated and obtained based on the radial distance and the angle between the radar beam and the central axis of the laser wind-measuring radar. The calculation method includes: ; in, Indicates the radial distance, This indicates the angle between the radar beam and the central axis of the laser wind measuring radar.
[0011] In one specific implementation scheme, the parameter inversion of the laser wind radar in the horizontal direction based on the horizontal echo signal includes: The laser wind radar is divided into several horizontal range gates, each corresponding to a different horizontal layer of the ground; the acquired horizontal echo signal includes the wavelengths of several radar beams at different horizontal range gates and the horizontal signal frequency shift. The radial wind speed of each radar beam is calculated based on the wavelength of the radar laser wave at different horizontal distances and the horizontal signal frequency shift. The calculation method includes: ; in, Indicates the first One radar beam Indicates the first A horizontal distance between doors, Indicates the first The horizontal distance from the door position The wavelength of a radar beam Indicates the first The horizontal distance from the door position Horizontal signal frequency shift of a radar beam Indicates the first The horizontal distance from the door position Radial wind speed of each radar beam; The second horizontal wind speed and second horizontal wind direction are calculated based on the unit vectors of all radar beam directions, the radial wind speeds of all radar beams, and the angle between the radar beams and the laser wind radar. The calculation method includes: ; ; ; ; in, Indicates the first The radar beam at the first Radial wind speed at a horizontal distance from the door position, This represents the two components of the second horizontal wind speed in the east-west direction and the north-south direction relative to the ground. The unit vector representing the direction of the radar beam. This indicates the angle between the radar beam and the laser wind-measuring radar. Represents a constant. Indicates the first The second horizontal wind speed at a horizontal distance from the door position. Indicates the first The second horizontal wind direction at a horizontal distance from the door position.
[0012] In one specific implementation, the horizontal echo signal also includes the horizontal signal carrier-to-noise ratio and the horizontal signal strength value of each radar beam at different horizontal range gate positions; After calculating the second horizontal wind speed and second horizontal wind direction in the horizontal direction of the radar based on the unit vectors of all radar beam directions, the radial wind speeds of all radar beams, and the angle between the radar beams and the laser wind-measuring radar, the method further includes: The atmospheric horizontal extinction coefficient at different horizontal distance gate positions is calculated based on the horizontal signal carrier-to-noise ratio, horizontal signal strength value, and preset radar parameters for each radar beam at different horizontal distance gate positions. The horizontal visibility of the laser wind radar is calculated based on the atmospheric horizontal extinction coefficient. The calculation method includes:
[0013]
[0014] Where H represents horizontal visibility, Indicates the atmospheric horizontal extinction coefficient. Indicates the wavelength of radar laser waves, Represents the coefficient.
[0015] Secondly, this application provides a radar inversion device, which adopts the following technical solution: the device includes: The configuration parameter acquisition module is used to acquire radar inversion configuration parameters and determine whether the radar inversion configuration parameters are equal to the preset parameter values. The radar inversion configuration parameters are used to determine the placement position of the laser wind radar during radar inversion. The vertical inversion module is used to control the radar to be placed in the vertical direction if the radar inversion configuration parameters are equal to the preset parameter values, to obtain the vertical echo signal, and to perform parameter inversion of the vertical direction of the laser wind measuring radar based on the vertical echo signal. The vertical echo signal is the radar echo signal obtained by the laser wind measuring radar in the vertical direction. The horizontal inversion module is used to control the radar to be placed horizontally if the radar inversion configuration parameters are not equal to the preset parameter values, acquire horizontal echo signals, and perform parameter inversion of the laser wind measurement radar in the horizontal direction based on the horizontal echo signals. The horizontal echo signals are the radar echo signals acquired by the laser wind measurement radar in the horizontal direction. The vertical direction is the direction in which the central axis of the laser wind measurement radar is perpendicular to the ground plane, and the horizontal direction is the direction in which the central axis of the laser wind measurement radar is horizontal to the ground plane.
[0016] Thirdly, this application provides a computer device that adopts the following technical solution: it includes a memory and a processor, wherein the memory stores a computer program that can be loaded by the processor and executed as any of the radar inversion methods described above.
[0017] Fourthly, this application provides a computer-readable storage medium that stores a computer program capable of being loaded by a processor and executing any of the aforementioned radar inversion methods.
[0018] In summary, this application has the following beneficial technical effects: By integrating vertical and horizontal parameters such as wind field and visibility inversion from the radar, users can select the corresponding radar parameters for inversion by setting pre-configured radar inversion parameters. Through the integration of functions such as wind speed, wind direction, and visibility, an integrated design is achieved, providing a new direction for multi-element observation of wind fields and meteorology. In addition, the integrated design has both vertical and horizontal long-distance measurement functions, realizing the miniaturization, lightweighting, and flexible deployment of lidar, meeting the mobility and flexibility requirements of urban wind field and meteorological detection. Attached Figure Description
[0019] Figure 1 This is a flowchart of the radar inversion method in the embodiments of this application; Figure 2 This is a schematic diagram of the radar beam distribution in the vertical direction in an embodiment of this application; Figure 3 This is a schematic diagram of the calculation of cloud base height inversion in the embodiments of this application; Figure 4 This is a schematic diagram of the carrier-to-noise ratio curve generated during cloud base height inversion in this embodiment of the application; Figure 5 This is a schematic diagram of the radar beam distribution in the horizontal direction in an embodiment of this application; Figure 6 This is a schematic diagram of the radar inversion system in the embodiments of this application; Figure 7 This is a schematic diagram of the radar inversion device in the embodiments of this application; Figure 8 This is a schematic diagram used to illustrate a computer device in the embodiments of this application.
[0020] Reference numerals: 701, Configuration parameter acquisition module; 702, Vertical inversion module; 703, Horizontal inversion module. Detailed Implementation
[0021] The following combination Figures 1-8 This application will be described in further detail.
[0022] This application discloses a radar inversion method. This method is applied to a radar inversion system and can integrate and invert multiple parameters of the radar, improving the radar's flexible deployment and meeting the mobility and flexibility requirements of urban wind field and meteorological detection.
[0023] In today's rapidly developing low-altitude economy, drone logistics and aerial travel are becoming increasingly frequent. The ever-changing low-altitude meteorological conditions act like hidden "reefs," constantly threatening flight safety. Laser wind-measuring radar, as a high-precision, multi-range simultaneous wind sensor, can detect changes in wind speed and direction, as well as weather patterns, in low-altitude areas in advance. Radar inversion refers to the process of using radar-observed echo signals (such as echo intensity, phase, frequency shift, and polarization characteristics) combined with radar operating principles and atmospheric physical models to inversely solve for the physical parameters of the atmosphere or target using mathematical or statistical methods. By acquiring radar observation data through laser wind-measuring radar and then using this data for inversion to obtain the data needed by users, crucial meteorological data can be provided, playing a role in environmental monitoring and other fields.
[0024] However, current radar inversion methods require users to acquire and calculate specific data for a single physical parameter. If multiple physical parameters are needed, multiple data acquisitions and inversions are required, which can be time-consuming and reduce radar monitoring efficiency. To improve the flexibility of radar multi-element measurement and enhance radar deployment flexibility, this application provides a radar inversion method.
[0025] Reference Figure 1 The method includes the following steps: S10, obtain the radar inversion configuration parameters and determine whether the radar inversion configuration parameters are equal to the preset parameter values. The radar inversion configuration parameters are used to determine the placement position of the laser wind radar during radar inversion.
[0026] Specifically, the direction for inverting parameters such as wind field evolution and visibility using the laser wind-measuring radar is determined by the radar inversion configuration parameters. The inversion directions include both vertical and horizontal directions. The vertical direction can be understood as placing the radar vertically, meaning the radar's central axis is perpendicular to the ground; the horizontal direction can be understood as placing the radar horizontally, meaning the radar's central axis is horizontal to the ground. Parameters such as wind field and visibility are then inverted from both the vertical and horizontal directions of the radar.
[0027] S20, if the radar inversion configuration parameters are equal to the preset parameter values, then control the radar to be placed in the vertical direction, acquire the vertical echo signal, and perform parameter inversion of the vertical direction of the laser wind measuring radar based on the vertical echo signal. The vertical echo signal is the radar echo signal acquired by the laser wind measuring radar in the vertical direction.
[0028] Specifically, the system determines whether the radar should be positioned vertically or horizontally for parameter inversion based on preset radar inversion configuration parameters. If the radar inversion configuration parameters equal the preset values, the radar is positioned vertically to acquire vertical echo signals, and vertical parameter inversion is performed based on these signals. Assuming the radar inversion configuration parameters are set to P and the preset value is set to 1, if the user sets parameter P=1, the radar position is adjusted to vertical, meaning the radar's central axis is perpendicular to the ground, and vertical echo signals are acquired. The vertical echo signal can be understood as the echo signal acquired when the laser wind measuring radar is in a vertical position, and may include vertical signal strength, signal-to-noise ratio, and radial wind speed of the radar beam. It should be noted that the vertical placement of the radar can be controlled via a host computer or manually adjusted.
[0029] S30, if the radar inversion configuration parameters are not equal to the preset parameter values, then control the radar to be placed in the horizontal direction, acquire the horizontal echo signal, and perform parameter inversion of the laser wind measuring radar in the horizontal direction based on the horizontal echo signal. The horizontal echo signal is the radar echo signal acquired by the laser wind measuring radar in the horizontal direction.
[0030] Specifically, the system determines whether the radar should be positioned vertically or horizontally for parameter inversion based on preset radar inversion configuration parameters. If the radar inversion configuration parameters are not equal to the preset values, the radar is controlled to be placed horizontally to acquire horizontal echo signals, and horizontal parameter inversion of the laser wind measurement radar is performed based on these signals. Assuming the radar inversion configuration parameters are set to P and the preset values are set to 1, if the user sets the parameters... The radar position is then adjusted to be horizontal, meaning the radar's central axis is level with the ground, and horizontal echo signals are acquired. The horizontal echo signal can be understood as the echo signal acquired when the laser wind-measuring radar is in a vertical position, and can include horizontal signal strength, signal-to-noise ratio, and radial wind speed of the radar beam. It should be noted that the horizontal placement of the radar can be controlled via a host computer or manually adjusted.
[0031] In this application, the inversion of parameters such as wind field and visibility in the vertical direction and the horizontal direction of the radar are integrated. Users can select the corresponding radar parameter inversion by setting the radar inversion configuration parameters. By integrating functions such as wind speed, wind direction, and visibility, an integrated design is achieved, providing a new direction for multi-element observation of wind field and meteorology. In addition, the integrated design has both vertical and horizontal long-distance measurement functions, realizing the miniaturization, lightweighting, and flexible deployment of lidar, meeting the mobility and flexibility requirements of urban wind field and meteorological detection.
[0032] In one embodiment, the method of parameter inversion in the vertical direction of a laser wind radar based on the vertical echo signal can be specifically implemented as follows: The central axis of the laser wind-measuring lidar is divided into several vertical range gates, each corresponding to a different height level. Specifically, when the radar inversion configuration parameter is set to 1, the radar is controlled to be placed vertically, achieving parameter inversion in the vertical direction. In actual use of the radar inversion system, the radar is adjusted to a vertical position by adjusting the bracket. The telescope module consists of eight tubes, representing eight beam directions. The installation direction of the telescope determines the output beam direction of the miniature wind-measuring lidar system. By adjusting the radar's mounting bracket, if the bracket is placed vertically, the radar's output beam direction can be aligned with the vertical direction. (Refer to...) Figure 2 When measuring vertically, the eight beams of the radar are evenly distributed in a circle.
[0033] Figure 2 The Z-axis is the direction of the radar's central axis. The plane formed by the X-axis and Y-axis is perpendicular to the Z-axis, meaning that the plane formed by the X-axis and Y-axis is parallel to the ground. The X-axis is the horizontal eastward direction relative to the ground, and the Y-axis is the horizontal northward direction relative to the ground. Figure 2 In the diagram, z1, z2, ..., zm represent several vertically spaced gates. This represents the angle between each radar beam and the radar's central axis, that is, the angle between the radar beam and the Z-axis. Since the eight radar beams in this embodiment are evenly distributed in a circle, the angle between each radar beam and the Z-axis... Consistent; This represents the azimuth angle of each radar beam. The azimuth angle is the angle between the radar beam line mapped onto the plane formed by the X and Y axes and the X-axis; that is, the angle between the radar beam line mapped onto the ground and the horizontal due east direction. After dividing the signal into several vertical range gates, the acquired vertical echo signal includes the wavelengths of several radar beams at different vertical range gates and the vertical signal frequency shift.
[0034] Next, the radial wind speed of each radar beam is calculated based on the wavelength of the radar laser wave at different vertical distances and the vertical signal frequency shift. The calculation method can be expressed as follows: ; in, Indicates the first One radar beam Indicates the first A vertical distance door, Indicates the first The vertical distance to the door position of the first The wavelength of a radar beam Indicates the first The vertical distance to the door position of the first Vertical signal frequency shift of a radar beam Indicates the first The vertical distance to the door position of the first Radial wind speed of a radar beam.
[0035] Then, based on the radial wind speed of each radar beam at different vertical distance gates, the angle between each radar beam and the central axis of the laser wind measuring radar, and the azimuth angle of each radar beam, the first horizontal wind speed and the first horizontal wind direction in the vertical direction at different vertical distance gate positions are calculated. The calculation method can be expressed as follows: ; ; ; in, Indicates the first The first horizontal wind speed at each vertical distance from the door has three components: horizontal east-west relative to the ground, horizontal north-south relative to the ground, and vertical relative to the ground. This indicates the angle between each radar beam and the central axis of the laser wind measuring radar. Indicates the first The azimuth angle of each radar beam. Indicates the first The vertical distance to the door position of the first Radial wind speed of each radar beam Indicates the first The first horizontal wind speed at a vertical distance from the door position. Indicates the first The first horizontal wind direction at the vertical distance from the door position. This indicates left division of a matrix.
[0036] In this embodiment, eight radar beams are used. The first horizontal wind speed at a certain vertical distance from the gate can be expressed in three components: horizontal eastward, horizontal northward, and vertical. .
[0037] The horizontal wind speed and direction at different vertical distances from the door can be calculated using the above formula.
[0038] In one embodiment, simple wind field inversion can only measure wind speed and direction, and it is difficult to measure atmospheric transparency. Therefore, after calculating the first horizontal wind speed and first horizontal wind direction in the vertical direction based on the radial wind speed of each radar beam at different vertical distances, the angle between each radar beam and the central axis of the laser wind measuring radar, and the azimuth angle of each radar beam, the following steps can also be performed: The atmospheric extinction coefficient at different vertical range gate positions is calculated based on the vertical signal-to-noise ratio of each radar beam at different vertical range gate positions and the radar's preset parameters. The calculation methods include: ; ; ; in, This represents the signal-to-noise ratio in the vertical direction of the i-th radar beam. Indicates system efficiency. This represents the single pulse energy output by the radar. This represents the atmospheric backscattering coefficient of the i-th radar beam. Indicates the wavelength of radar laser waves, Denotes Planck's constant. Indicates the bandwidth of the detector circuit. This represents the atmospheric extinction coefficient of the i-th radar beam. This represents the telescope weighting function. It is a constant, usually taken as 50. The value represents the extinction backscattering ratio, typically ranging from 0.67 to 1.0, where z represents the vertical distance from the gate position. This represents the atmospheric extinction coefficient at a vertical distance z from the gate.
[0039] The atmospheric extinction coefficient can be calculated by using the carrier-to-noise ratio of different radar beams at different vertical range gate positions. Vertical visibility can then be calculated based on the atmospheric extinction coefficient. In the above formula, The atmospheric extinction coefficient is unknown and needs to be solved. The other parameters are either preset or known parameters that can be obtained directly from the vertical echo signal of the radar.
[0040] Then, the vertical visibility of the laser wind radar is calculated based on the atmospheric extinction coefficient and vertical signal intensity at different vertical distances from the gate. The calculation method includes:
[0041] in, This represents the signal strength value in the vertical direction at a z-distance from the gate position. This represents the signal strength value in the vertical direction at the starting position of the gate. This represents the atmospheric extinction coefficient at a vertical distance from the starting position of the door. This represents the distance from the starting position of the vertical distance gate to the radar. This represents the signal strength value in the vertical direction at the vertical distance from the gate termination position.
[0042] Based on the obtained atmospheric extinction coefficient, it is integrated over a certain distance. When the integral value of the extinction coefficient over a certain distance is greater than or equal to 3, that distance is the vertical visibility at that moment. If the integral value of the extinction coefficient is still less than 3 within the detection range of the lidar, then the maximum detection distance of the lidar is the vertical visibility at that moment.
[0043] In one embodiment, wind field inversion and vertical visibility inversion do not include cloud base height inversion. Considering that different cloud base heights have an impact on aviation, forecasting, environmental monitoring, and other fields, after calculating the vertical visibility of the laser wind radar based on the atmospheric extinction coefficient and vertical signal intensity value at different vertical distance gate locations, the following steps can also be performed: First, determine whether each radar beam passes through clouds. If the radar beam does not pass through clouds, it means there are no clouds in the radar beam's path, and no processing is needed. If the radar beam passes through clouds, calculate the cloud base height based on the vertical signal-to-noise ratio (SNR) of the current radar beam at different vertical range gate positions. (Refer to...) Figure 3 The cloud base height is the vertical distance between the first cloud layer closest to the radar and the radar.
[0044] Specifically, firstly, a carrier-to-noise ratio (CNR) curve is plotted based on the vertical signal-to-noise ratio of the current radar beam at different vertical range gate positions; refer to... Figure 4 , is the carrier-to-noise ratio curve plotted based on the carrier-to-noise ratio in the radar vertical echo signal.
[0045] After obtaining the carrier-to-noise ratio (CNR) curve, locate the position of the second peak of the CNR curve; that is,... Figure 4The location of the secondary peak corresponding to d3 is determined. Next, the first-order difference of the carrier-to-noise ratio curve is calculated, and the radial distance corresponding to the location closest to the secondary peak with a first-order difference greater than 0 is found. The radial distance is the distance between the radar beam direction and the laser wind radar; the radial distance is also... Figure 4 In the diagram, d2 represents the position corresponding to the distance.
[0046] Finally, the cloud base height is calculated and obtained based on the radial distance and the angle between the radar beam and the central axis of the laser wind measuring radar. The calculation method can be expressed as follows: ; in, Indicates radial distance. This represents the angle between the radar beam and the central axis of the laser wind-measuring radar; where, in the above formula, the radial distance d is also... Figure 4 The distance corresponding to d2 in the carrier-to-noise ratio curve.
[0047] Reference Figure 3 The radial direction is the direction of the radar beam, and the angle between the radar beam and the Z-axis is... Therefore, the angle between the radar and the first layer of clouds is also... .
[0048] In this application, by adjusting the radar's position to a vertical orientation, the vertical wind field, vertical visibility, and cloud base height can be retrieved. This allows for the measurement of horizontal wind speed and direction, vertical visibility, and cloud base height at different vertical distances. Vertical visibility is the farthest vertical distance that the radar can measure. By retrieving different physical parameters, the accuracy of radar measurements can be improved, providing reliable meteorological information for multiple fields such as aviation safety, disaster early warning, climate research, and the low-altitude economy.
[0049] In one embodiment, the method of inverting the horizontal parameters of a laser wind radar based on the horizontal echo signal can be specifically executed as follows: The central axis of the laser wind-measuring lidar is divided into several horizontal range gates, each corresponding to a different height level. Specifically, when the radar inversion configuration parameter is set to a value other than 1, the radar is controlled to be placed horizontally, achieving parameter inversion in the horizontal direction. In actual use of the radar inversion system, the radar is adjusted to a horizontal position by adjusting the bracket. The telescope module consists of two lens tubes, representing two beam directions. The installation direction of the telescope determines the output beam direction of the miniature wind-measuring lidar system. By adjusting the radar's mounting bracket, if the bracket is placed horizontally, the radar's output beam direction can be aligned horizontally. (Refer to...) Figure 5 During horizontal measurement, the two beam directions of the radar are symmetrically distributed according to the radar's central axis.
[0050] Figure 5 The X-axis is the direction of the radar's central axis, which is the horizontal eastward direction relative to the ground, and the Y-axis is the horizontal northward direction relative to the ground. Figure 5 In the diagram, x1, x2, ..., xn represent several horizontally spaced gates. This represents the angle between each radar beam and the radar's central axis, that is, the angle between the radar beam and the X-axis. Since the two radar beams in this embodiment are symmetrically distributed along the radar's central axis, the angle between each radar beam and the X-axis... They are the same size, but different directions. The included angle... This is a fixed value, set during the radar's factory configuration. and This refers to the unit vectors of two radar beams. After dividing the signal into several horizontal range gates, the acquired horizontal echo signal includes the wavelengths of several radar beams at different horizontal range gates and the horizontal signal frequency shift.
[0051] Then, the radial wind speed of each radar beam is calculated based on the wavelength of the radar laser wave at different horizontal distances and the horizontal signal frequency shift. The calculation method includes: ; in, Indicates the first One radar beam Indicates the first A horizontal distance between doors, Indicates the first The horizontal distance from the door position The wavelength of a radar beam Indicates the first The horizontal distance from the door position Horizontal signal frequency shift of a radar beam Indicates the first The horizontal distance from the door position Radial wind speed of a radar beam.
[0052] Then, based on the unit vectors of all radar beam directions, the radial wind speeds of all radar beams, and the angle between the radar beams and the laser wind radar, the second horizontal wind speed and the second horizontal wind direction in the horizontal direction of the radar are calculated. The calculation method includes: ; ; ; ; in, Indicates the first The radar beam at the first Radial wind speed at a horizontal distance from the door position, This represents the two components of the second horizontal wind speed in the east-west direction and the north-south direction relative to the ground. The unit vector representing the direction of the radar beam. This indicates the angle between the radar beam and the laser wind-measuring radar. Represents a constant. Indicates the first The second horizontal wind speed at a horizontal distance from the door position. Indicates the first The second horizontal wind direction at a horizontal distance from the door position.
[0053] In one embodiment, considering that wind field inversion cannot reflect horizontal visibility in the horizontal direction, after calculating the second horizontal wind speed and second horizontal wind direction of the radar based on the unit vector of all radar beam directions, the radial wind speed of all radar beams, and the angle between the radar beam and the laser wind radar, the following steps can also be performed: First, the atmospheric horizontal extinction coefficient at different horizontal range gate positions is calculated based on the horizontal signal carrier-to-noise ratio, horizontal signal strength, and preset radar parameters for each radar beam at different horizontal range gate positions. The calculation method for the horizontal atmospheric extinction coefficient is the same as that for the vertical atmospheric extinction coefficient described above, and will not be repeated here.
[0054] After calculating the atmospheric horizontal extinction coefficient, the horizontal visibility of the laser wind radar is calculated based on the atmospheric horizontal extinction coefficient. The calculation method can be expressed as follows:
[0055]
[0056] Where H represents horizontal visibility, Indicates the atmospheric horizontal extinction coefficient. Indicates the wavelength of radar laser waves, Represents the coefficient.
[0057] In this application, the horizontal wind field and visibility are inverted by measuring with two radar beams, thereby improving the real-time performance and accuracy of horizontal multi-element measurements. This can provide reliable meteorological information for multiple fields such as aviation safety, disaster early warning, climate research, and low-altitude economy.
[0058] Reference Figure 6This is a schematic diagram of the radar inversion system in this embodiment of the application. The radar inversion system in this embodiment integrates a laser module, a telescope module, a heterodyne detection module, a digital signal processing module, and a data transmission module. The laser module primarily provides transmission power; the telescope module transmits and receives signals, emitting laser pulses and receiving radar echo signals from the atmosphere; the heterodyne detection module extracts the Doppler frequency shift and shifts the Doppler signal to an easily processed mid-frequency band, enabling subsequent extraction, amplification, and demodulation of this Doppler signal; the digital signal processing module processes the acquired Doppler signal and radar echo signal to generate required parameter values, such as wind speed, wind direction, visibility, and cloud base height; and the data transmission module transmits the calculated parameter values to the user terminal for viewing and analysis.
[0059] Figure 1 This is a flowchart illustrating a radar inversion method in one embodiment. It should be understood that, although... Figure 1 The steps in the flowchart are shown sequentially as indicated by the arrows, but these steps are not necessarily executed in the order indicated by the arrows; unless explicitly stated otherwise, there is no strict order requirement for the execution of these steps, and they can be executed in other orders; and Figure 1 At least some of the steps in the process may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily completed at the same time, but can be executed at different times. The execution order of these sub-steps or stages is not necessarily sequential, but can be executed in turn or alternately with other steps or at least some of the sub-steps or stages of other steps.
[0060] Based on the above method, this application also discloses a radar inversion device.
[0061] Reference Figure 7 The device includes the following modules: The configuration parameter acquisition module 701 is used to acquire radar inversion configuration parameters and determine whether the radar inversion configuration parameters are equal to the preset parameter values. The radar inversion configuration parameters are used to determine the placement position of the laser wind radar during radar inversion. The vertical inversion module 702 is used to control the radar to be placed in the vertical direction if the radar inversion configuration parameters are equal to the preset parameter values, to obtain the vertical echo signal, and to perform parameter inversion of the vertical direction of the laser wind measuring radar based on the vertical echo signal. The vertical echo signal is the radar echo signal obtained by the laser wind measuring radar in the vertical direction. The horizontal inversion module 703 is used to control the radar to be placed in the horizontal direction if the radar inversion configuration parameters are not equal to the preset parameter values, acquire the horizontal echo signal, and perform parameter inversion of the laser wind measuring radar in the horizontal direction based on the horizontal echo signal. The horizontal echo signal is the radar echo signal acquired by the laser wind measuring radar in the horizontal direction; wherein, the vertical direction is the direction in which the central axis of the laser wind measuring radar is perpendicular to the ground plane, and the horizontal direction is the direction in which the central axis of the laser wind measuring radar is horizontal to the ground plane.
[0062] In one embodiment, the vertical inversion module 702 is specifically used to divide the direction of the central axis of the laser wind radar into several vertical range gates, each vertical range gate corresponding to a different height layer; the acquired vertical echo signal includes the wavelengths of several radar beams at different vertical range gates and the vertical signal frequency shift; the radial wind speed of each radar beam is calculated based on the wavelengths of the radar laser waves at different vertical range gates and the vertical signal frequency shift, and the calculation method includes: ; in, Indicates the first One radar beam Indicates the first A vertical distance door, Indicates the first The vertical distance to the door position of the first The wavelength of a radar beam Indicates the first The vertical distance to the door position of the first Vertical signal frequency shift of a radar beam Indicates the first The vertical distance to the door position of the first Radial wind speed of each radar beam; The first horizontal wind speed and first horizontal wind direction in the vertical direction at different vertical distance gate positions are calculated based on the radial wind speed of each radar beam at different vertical distance gate positions, the angle between each radar beam and the central axis of the laser wind measuring radar, and the azimuth angle of each radar beam. The calculation method includes: ; ; ; in, Indicates the first The first horizontal wind speed at each vertical distance from the door has three components: horizontal east-west relative to the ground, horizontal north-south relative to the ground, and vertical relative to the ground. This indicates the angle between each radar beam and the central axis of the laser wind measuring radar. Indicates the first The azimuth angle of each radar beam. Indicates the first The vertical distance to the door position of the first Radial wind speed of each radar beam Indicates the first The first horizontal wind speed at a vertical distance from the door position. Indicates the first The first horizontal wind direction at the vertical distance from the door position. This indicates left division of a matrix.
[0063] In one embodiment, the vertical echo signal further includes the vertical signal carrier-to-noise ratio and vertical signal intensity value of each radar beam at different vertical range gate positions; the vertical inversion module 702 is also used to calculate the atmospheric extinction coefficient at different vertical range gate positions based on the vertical signal carrier-to-noise ratio of each radar beam at different vertical range gate positions and preset radar parameters, the calculation method including: ; ; ; in, This represents the signal-to-noise ratio in the vertical direction of the i-th radar beam. Indicates system efficiency. This represents the single pulse energy output by the radar. This represents the atmospheric backscattering coefficient of the i-th radar beam. Indicates the wavelength of radar laser waves, Denotes Planck's constant. Indicates the bandwidth of the detector circuit. This represents the atmospheric extinction coefficient of the i-th radar beam. This represents the telescope weighting function. It is a constant. The extinction backscattering ratio is represented by z, which represents the vertical distance from the gate position. This represents the atmospheric extinction coefficient at a z-vertical distance from the door position; The vertical visibility of the laser wind radar is calculated based on the atmospheric extinction coefficient and vertical signal intensity at different vertical distances from the gate. The calculation methods include:
[0064] in, This represents the signal strength value in the vertical direction at a z-distance from the gate position. This represents the signal strength value in the vertical direction at the starting position of the gate. This represents the atmospheric extinction coefficient at a vertical distance from the starting position of the door. This represents the distance from the starting position of the vertical distance gate to the radar. This represents the signal strength value in the vertical direction at the vertical distance from the gate termination position.
[0065] In one embodiment, the vertical inversion module 702 is also used to determine whether each radar beam passes through the cloud layer; if the radar beam passes through the cloud layer, the cloud base height is calculated based on the vertical signal-to-noise ratio of the current radar beam at different vertical range gate positions.
[0066] In one embodiment, the vertical inversion module 702 is further configured to: plot a carrier-to-noise ratio (CNR) curve based on the CNR of the current radar beam at different vertical range gate positions; locate the position of the secondary peak of the CNR curve based on the CNR curve; calculate the first-order difference of the CNR curve and find the radial distance corresponding to the position closest to the secondary peak position where the first-order difference is greater than 0, where the radial distance is the distance between the radar beam direction and the laser wind-measuring radar; and calculate and obtain the cloud base height based on the radial distance and the angle between the radar beam and the central axis of the laser wind-measuring radar, wherein the calculation method includes: ; in, Indicates radial distance. This indicates the angle between the radar beam and the central axis of the laser wind measuring radar.
[0067] In one embodiment, the horizontal inversion module 703 is specifically used to divide the direction of the laser wind radar into several horizontal range gates, each horizontal range gate corresponding to a different horizontal layer above the ground; the acquired horizontal echo signal includes the wavelengths of several radar beams at different horizontal range gates and the horizontal signal frequency shift; the radial wind speed of each radar beam is calculated based on the wavelengths of the radar laser waves at different horizontal range gates and the horizontal signal frequency shift, and the calculation method includes: ; in, Indicates the first One radar beam Indicates the first A horizontal distance between doors, Indicates the first The horizontal distance from the door position The wavelength of a radar beam Indicates the first The horizontal distance from the door position Horizontal signal frequency shift of a radar beam Indicates the first The horizontal distance from the door position Radial wind speed of each radar beam; The second horizontal wind speed and second horizontal wind direction are calculated based on the unit vectors of all radar beam directions, the radial wind speeds of all radar beams, and the angle between the radar beams and the laser wind radar. The calculation method includes: ; ; ; ; in, Indicates the first The radar beam at the first Radial wind speed at a horizontal distance from the door position, This represents the two components of the second horizontal wind speed in the east-west direction and the north-south direction relative to the ground. The unit vector representing the direction of the radar beam. This indicates the angle between the radar beam and the laser wind-measuring radar. Represents a constant. Indicates the first The second horizontal wind speed at a horizontal distance from the door position. Indicates the first The second horizontal wind direction at a horizontal distance from the door position.
[0068] In one embodiment, the horizontal echo signal also includes the horizontal signal carrier-to-noise ratio and the horizontal signal intensity value of each radar beam at different horizontal range gate positions; the horizontal inversion module 703 is further configured to calculate the atmospheric horizontal extinction coefficient at different horizontal range gate positions based on the horizontal signal carrier-to-noise ratio, the horizontal signal intensity value and the radar preset parameters of each radar beam at different horizontal range gate positions. The horizontal visibility of a laser wind radar is calculated based on the atmospheric horizontal extinction coefficient. The calculation methods include:
[0069]
[0070] Where H represents horizontal visibility, Indicates the atmospheric horizontal extinction coefficient. Indicates the wavelength of radar laser waves, Represents the coefficient.
[0071] The radar inversion device provided in this application embodiment can be applied to the radar inversion method provided in the above embodiment. For relevant details, please refer to the above method embodiment. The implementation principle and technical effect are similar, and will not be repeated here.
[0072] It should be noted that the radar inversion device provided in this embodiment is only illustrated by the above-described division of functional modules / units when performing radar inversion. In practical applications, the above functions can be assigned to different functional modules / units as needed, that is, the internal structure of the radar inversion device can be divided into different functional modules / units to complete all or part of the functions described above. Furthermore, the implementation method of the radar inversion method provided in the above-described method embodiments and the implementation method of the radar inversion device provided in this embodiment belong to the same concept. The specific implementation process of the radar inversion device provided in this embodiment is detailed in the above-described method embodiments and will not be repeated here.
[0073] This application also discloses a computer device.
[0074] Specifically, such as Figure 8 As shown, the computer device can be a desktop computer, laptop computer, handheld computer, or cloud server, etc. The computer device may include, but is not limited to, a processor and memory. The processor and memory can be connected via a bus or other means. The processor can be a Central Processing Unit (CPU). The processor can also be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs) or other programmable logic devices, graphics processing units (GPUs), embedded neural network processing units (NPUs) or other dedicated deep learning coprocessors, discrete gate or transistor logic devices, discrete hardware components, or combinations of the above types of chips.
[0075] Memory, as a non-transitory computer-readable storage medium, can be used to store non-transitory software programs, non-transitory computer-executable programs, and modules, such as the program instructions / modules corresponding to the methods in the above embodiments of this application. The processor executes various functional applications and data processing by running the non-transitory software programs, instructions, and modules stored in the memory, thereby implementing the methods in the above embodiments. The memory may include a program storage area and a data storage area, wherein the program storage area may store the operating system and at least one application program required for a function; the data storage area may store data created by the processor, etc. Furthermore, the memory may include high-speed random access memory and may also include non-transitory memory, such as at least one disk storage device, flash memory device, or other non-transitory solid-state storage device. In some embodiments, the memory may optionally include memory remotely located relative to the processor, and these remote memories can be connected to the processor via a network. Examples of such networks include, but are not limited to, the Internet, corporate intranets, local area networks, mobile communication networks, and combinations thereof.
[0076] This application also discloses a computer-readable storage medium.
[0077] Specifically, the computer-readable storage medium is used to store a computer program, which, when executed by a processor, implements the methods described in the above-described method embodiments. Those skilled in the art will understand that implementing all or part of the processes in the methods described in the above-described embodiments of this application can be accomplished by a computer program instructing related hardware. The program can be stored in a computer-readable storage medium, and when executed, it can include the processes of the embodiments described above. The storage medium can be a magnetic disk, optical disk, read-only memory (ROM), random access memory (RAM), flash memory, hard disk drive (HDD), or solid-state drive (SSD), etc.; the storage medium can also include combinations of the above types of memory.
[0078] This specific embodiment is merely an explanation of the present invention and is not intended to limit the invention. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.
Claims
1. A radar inversion method, characterized in that: The method includes: Obtain radar inversion configuration parameters and determine whether the radar inversion configuration parameters are equal to preset parameter values, wherein the radar inversion configuration parameters are used to determine the placement position of the laser wind radar during radar inversion; If the radar inversion configuration parameters are equal to the preset parameter values, the radar is controlled to be placed in the vertical direction to acquire the vertical echo signal, and the parameters of the laser wind measuring radar in the vertical direction are inverted based on the vertical echo signal. The vertical echo signal is the radar echo signal acquired by the laser wind measuring radar in the vertical direction. If the radar inversion configuration parameters are not equal to the preset parameter values, the radar is controlled to be placed in the horizontal direction to acquire the horizontal echo signal, and the parameters of the laser wind measuring radar in the horizontal direction are inverted based on the horizontal echo signal. The horizontal echo signal is the radar echo signal acquired by the laser wind measuring radar in the horizontal direction. Wherein, the vertical direction is the direction in which the central axis of the laser wind measuring radar is perpendicular to the ground plane, and the horizontal direction is the direction in which the central axis of the laser wind measuring radar is horizontal to the ground plane.
2. The method according to claim 1, characterized in that: The parameter inversion of the vertical direction of the laser wind radar based on the vertical echo signal includes: The laser wind radar is divided into several vertical range gates along its central axis, with each vertical range gate corresponding to a different height level; the acquired vertical echo signal includes the wavelengths of several radar beams at different vertical range gates and the vertical signal frequency shift. The radial wind speed of each radar beam is calculated based on the wavelength of the radar laser wave at different vertical distances and the vertical signal frequency shift. The calculation method includes: ； in, Indicates the first One radar beam Indicates the first A vertical distance door, Indicates the first The vertical distance to the door position of the first The wavelength of a radar beam Indicates the first The vertical distance to the door position of the first Vertical signal frequency shift of a radar beam Indicates the first The vertical distance to the door position of the first Radial wind speed of each radar beam; The first horizontal wind speed and first horizontal wind direction in the vertical direction at different vertical distance gate positions are calculated based on the radial wind speed of each radar beam at different vertical distance gate positions, the angle between each radar beam and the central axis of the laser wind measuring radar, and the azimuth angle of each radar beam. The calculation method includes: ； ； ； in, Indicates the first The first horizontal wind speed at each vertical distance from the door has three components: horizontal east-west relative to the ground, horizontal north-south relative to the ground, and vertical relative to the ground. This indicates the angle between each radar beam and the central axis of the laser wind measuring radar. Indicates the first The azimuth angle of each radar beam. Indicates the first The vertical distance to the door position of the first Radial wind speed of each radar beam Indicates the first The first horizontal wind speed at a vertical distance from the door position. Indicates the first The first horizontal wind direction at the vertical distance from the door position. This indicates left division of a matrix.
3. The method according to claim 2, characterized in that: The vertical echo signal also includes the vertical signal carrier-to-noise ratio and vertical signal strength value of each radar beam at different vertical range gate positions; After calculating the first horizontal wind speed and first horizontal wind direction in the vertical direction based on the radial wind speed of each radar beam at different vertical distances, the angle between each radar beam and the central axis of the laser wind measuring radar, and the azimuth angle of each radar beam, the method further includes: The atmospheric extinction coefficient at different vertical range gate positions is calculated based on the vertical signal-to-noise ratio of each radar beam at different vertical range gate positions and the radar's preset parameters. The calculation methods include: ； ； ； in, This represents the signal-to-noise ratio in the vertical direction of the i-th radar beam. Indicates system efficiency. This represents the single pulse energy output by the radar. This represents the atmospheric backscattering coefficient of the i-th radar beam. Indicates the wavelength of radar laser waves, Denotes Planck's constant. Indicates the bandwidth of the detector circuit. This represents the atmospheric extinction coefficient of the i-th radar beam. This represents the telescope weighting function. It is a constant. The extinction backscattering ratio is represented by z, which represents the vertical distance from the gate position. This represents the atmospheric extinction coefficient at a z-vertical distance from the door position; The vertical visibility of the laser wind radar is calculated based on the atmospheric extinction coefficient and vertical signal intensity at different vertical distances from the gate. The calculation methods include: in, This represents the signal strength value in the vertical direction at a z-distance from the gate position. This represents the signal strength value in the vertical direction at the starting position of the gate. This represents the atmospheric extinction coefficient at a vertical distance from the starting position of the door. This represents the distance from the starting position of the vertical distance gate to the radar. This represents the signal strength value in the vertical direction at the vertical distance from the gate termination position.
4. The method according to claim 3, characterized in that: After calculating the vertical visibility of the laser wind radar based on the atmospheric extinction coefficient and vertical signal intensity value at different vertical distances from the gate, the method further includes: Determine whether each radar beam passes through clouds; If the radar beam passes through the clouds, the cloud base height is calculated based on the vertical signal-to-noise ratio of the current radar beam at different vertical distance gate positions.
5. The method according to claim 4, characterized in that: The calculation of cloud base height based on the vertical signal-to-noise ratio of the current radar beam at different vertical distance gate positions includes: Plot the carrier-to-noise ratio curves based on the vertical signal carrier-to-noise ratio of the current radar beam at different vertical range gate positions. Find the location of the secondary peak of the carrier-to-noise ratio curve based on the carrier-to-noise ratio curve; Calculate the first-order difference of the carrier-to-noise ratio curve, and find the radial distance corresponding to the position closest to the second peak position where the first-order difference is greater than 0. The radial distance is the distance between the radar beam direction and the laser wind measuring radar. The cloud base height is calculated and obtained based on the radial distance and the angle between the radar beam and the central axis of the laser wind-measuring radar. The calculation method includes: ； in, Indicates the radial distance, This indicates the angle between the radar beam and the central axis of the laser wind measuring radar.
6. The method according to claim 1, characterized in that: The parameter inversion of the laser wind radar in the horizontal direction based on the horizontal echo signal includes: The laser wind radar is divided into several horizontal range gates, each corresponding to a different horizontal layer of the ground; the acquired horizontal echo signal includes the wavelengths of several radar beams at different horizontal range gates and the horizontal signal frequency shift. The radial wind speed of each radar beam is calculated based on the wavelength of the radar laser wave at different horizontal distances and the horizontal signal frequency shift. The calculation method includes: ； in, Indicates the first One radar beam Indicates the first A horizontal distance between doors, Indicates the first The horizontal distance from the door position The wavelength of a radar beam Indicates the first The horizontal distance from the door position Horizontal signal frequency shift of a radar beam Indicates the first The horizontal distance from the door position Radial wind speed of each radar beam; The second horizontal wind speed and second horizontal wind direction are calculated based on the unit vectors of all radar beam directions, the radial wind speeds of all radar beams, and the angle between the radar beams and the laser wind radar. The calculation method includes: ； ； ； ； in, Indicates the first The radar beam at the first Radial wind speed at a horizontal distance from the door position, This represents the two components of the second horizontal wind speed in the east-west direction and the north-south direction relative to the ground. The unit vector representing the direction of the radar beam. This indicates the angle between the radar beam and the laser wind-measuring radar. Represents a constant. Indicates the first The second horizontal wind speed at a horizontal distance from the door position. Indicates the first The second horizontal wind direction at a horizontal distance from the door position.
7. The method according to claim 6, characterized in that: The horizontal echo signal also includes the horizontal signal carrier-to-noise ratio and horizontal signal strength value of each radar beam at different horizontal distance gate positions; After calculating the second horizontal wind speed and second horizontal wind direction in the horizontal direction of the radar based on the unit vectors of all radar beam directions, the radial wind speeds of all radar beams, and the angle between the radar beams and the laser wind-measuring radar, the method further includes: The atmospheric horizontal extinction coefficient at different horizontal distance gate positions is calculated based on the horizontal signal carrier-to-noise ratio, horizontal signal strength value, and preset radar parameters for each radar beam at different horizontal distance gate positions. The horizontal visibility of the laser wind radar is calculated based on the atmospheric horizontal extinction coefficient. The calculation method includes: Where H represents horizontal visibility, Indicates the atmospheric horizontal extinction coefficient. Indicates the wavelength of radar laser waves, Represents the coefficient.
8. A radar inversion device, characterized in that: The device includes: The configuration parameter acquisition module is used to acquire radar inversion configuration parameters and determine whether the radar inversion configuration parameters are equal to the preset parameter values. The radar inversion configuration parameters are used to determine the placement position of the laser wind radar during radar inversion. The vertical inversion module is used to control the radar to be placed in the vertical direction if the radar inversion configuration parameters are equal to the preset parameter values, to obtain the vertical echo signal, and to perform parameter inversion of the vertical direction of the laser wind measuring radar based on the vertical echo signal. The vertical echo signal is the radar echo signal obtained by the laser wind measuring radar in the vertical direction. The horizontal inversion module is used to control the radar to be placed horizontally if the radar inversion configuration parameters are not equal to the preset parameter values, acquire horizontal echo signals, and perform parameter inversion of the laser wind measurement radar in the horizontal direction based on the horizontal echo signals. The horizontal echo signals are the radar echo signals acquired by the laser wind measurement radar in the horizontal direction. The vertical direction is the direction in which the central axis of the laser wind measurement radar is perpendicular to the ground plane, and the horizontal direction is the direction in which the central axis of the laser wind measurement radar is horizontal to the ground plane.
9. A computer device, characterized in that, It includes a memory and a processor, wherein the memory stores a computer program that can be loaded by the processor and executed according to any one of claims 1 to 7.
10. A computer-readable storage medium, characterized in that, The computer program is stored that can be loaded by a processor and executed according to any one of claims 1 to 7.