28 results about "Atmospheric sounding" patented technology

The invention relates to a high-angular-resolution atmospheric detection laser radar acquisition and control system, and belongs to the technical field of atmospheric detection laser radar data acquisition. The system comprises an ARM main control module, an acquisition card and a scanning module, wherein the ARM main control module is internally provided with a multi-core CPU (Central Processing Unit), and when the system runs, a data reading process, a data processing process and a data storage process are respectively distributed to different cores of the multi-core CPU for parallel execution; the ARM main control module is used for issuing an instruction to the acquisition card and reading a hardware accumulation result of the acquisition card for processing and storing; the scanning module is controlled by the ARM main control module to perform continuous scanning; and the acquisition card is used for performing high-angle-resolution acquisition on aerosol observation data obtained in the continuous and rapid scanning process of the scanning module according to an instruction of the ARM main control module. According to the invention, the real-time monitoring capability of aerosol space-time distribution in a complex atmospheric environment is improved.

The invention belongs to the technical field of atmosphere detection remote sensing, and discloses an atmosphere multi-element integrated multi-wavelength coherent differential absorption laser radar system. Lambda on1 wavelength laser generated by the first frequency stabilization seed laser, lambda on2 wavelength laser generated by the second frequency stabilization seed laser and lambda off wavelength laser generated by the third frequency stabilization seed laser are transmitted to the switching module for time domain modulation to obtain an output signal, and the output signal is decomposed into local oscillation light and a main signal by the first coupler. A main signal is modulated by the pulse modulator, amplified by the amplification module and then transmitted to the optical transceiver module, backward scattered light scattered by the atmosphere is transmitted to the second coupler and is subjected to coherent coupling and equalization with local oscillation light, and coherent electric signals are transmitted to the data analysis module through the balance detector to be analyzed. The water vapor concentration, the wind speed and the atmospheric temperature in the propagation path are obtained. Through the coherent detection technology, the signal-to-noise ratio of signals is remarkably improved, and high-precision atmospheric humidity and wind field detection is achieved.

The invention relates to the technical field of satellite remote sensing, in particular to a geometric simulation and registration method for an infrared hyperspectral atmospheric detector, which comprises the following steps of: constructing a visual vector of a pixel in a reference ellipsoid coordinate system by acquiring detection time, ground longitude, ground latitude and satellite position of the pixel FOV of the HIRAS; simulating the imaging range of an HIRAS pixel on the ground based on the size of a pixel field angle by adopting a Rodrigues rotation formula, searching an MERSI pixel in the same platform by using a KD-tree, and respectively calculating the equivalent brightness temperature of the HIRAS pixel and the equivalent brightness temperature of an MERSI simulation image according to a spectrum convolution function and a blackbody radiation formula; and counting the root mean square error of the brightness temperature difference between the HIRAS pixel and the MERSI pixel through multi-row accumulation, and arranging the root mean square error according to an OR row time sequence to obtain the geometric positioning accuracy of the HIRAS in the along-rail and cross-rail directions. According to the invention, the rapid search of the pixel closest to the visual vector range is realized, and the accurate position determination of the registration error is realized.

This application provides a hardware-software heterogeneous data processing system and method for atmospheric sounding lidar, relating to the technical field of embedded architecture for atmospheric remote sensing and scientific instruments. The system includes: a PL (Plug-in) terminal, which performs preliminary processing on lidar signal data to generate target data; a PS (Power Controller) terminal, including an internal cache and a processing core, with a virtual spatial filter configured within the processing core; the target data is stored in the internal cache via an ACP (Automatic Component Processing Filter); the processing core schedules the PL terminal to perform preliminary processing on the digital signal, reads the target data from the internal cache, and runs the virtual spatial filter to filter the target data; the virtual spatial filter performs register-level single-loop fusion of each independent algorithm node, completing the calculation of each independent algorithm within the single loop fusion, and all intermediate data resides in the register file. Relying on the ACP and single-loop fusion architecture, the bus occupancy rate and system latency of data flow are reduced, thereby achieving high throughput and zero bottlenecks at the system level.

The embodiment of the application provides a radar echo extrapolation prediction method and system based on a test time training strategy. The embodiment of the application first performs time axis calibration and spatial grid alignment processing on a radar echo historical collection sequence collected by an atmospheric detection system, to generate radar echo sequence data with time and space consistency; then constructs an echo evolution correlation representation model based on the data, to generate an echo evolution dependency graph and a multi-step extrapolation initial condition set; then introduces a test time training strategy for adaptive prediction processing, to adjust the edge weight parameter in real time, to obtain a radar echo multi-step extrapolation prediction sequence with time dynamic characteristics; finally extracts echo intensity variation characteristics and spatial movement trajectory rules according to the sequence, and generates a climate evolution trend description set containing an echo intensity trend curve and a path offset vector in combination with historical climate period evolution data, to realize more accurate climate evolution prediction and weather forecasting.

The invention relates to a 4DVAR wind field inversion lambda value prediction method based on a random forest, and belongs to the technical field of atmospheric exploration and data assimilation. Real-time accurate prediction of a lambda value in a 4DVAR wind field inversion process is realized through global candidate lambda setting, batch 4DVAR inversion, data processing and random forest model training, the 4DVAR wind field inversion efficiency and precision are improved, and the method is suitable for large-scale popularization and application. The method achieves the real-time precise prediction of the lambda value, greatly shortens the obtaining time of the lambda value, improves the efficiency and precision of 4DVAR wind field inversion, and meets the real-time demands of services.

The application relates to the technical field of atmospheric detection, and particularly provides a device and a method for measuring atmospheric transmittance, the device comprising a sensing and executing layer and a supporting layer, wherein the sensing and executing layer comprises a long-distance subsystem, a short-distance subsystem and a meteorological detection device; the distance between the long-distance subsystem and a measurement target is equal to a to-be-measured distance of the atmospheric transmittance; the distance between the long-distance subsystem and the measurement target is greater than the distance between the short-distance subsystem and the measurement target; the long-distance subsystem and the short-distance subsystem both comprise a multi-spectrum device; the multi-spectrum device of the long-distance subsystem collects a first multi-spectrum radiation image of the measurement target; at the same time, the multi-spectrum device of the short-distance subsystem collects a second multi-spectrum image of the measurement target; the atmospheric transmittance is calculated based on the radiation path difference of the first and second multi-spectrum radiation images; and the meteorological detection device is used for collecting meteorological data of a measurement environment, and the meteorological data is used for compensating for the environmental error of the atmospheric transmittance.

The embodiment of the invention provides a weather radar consistency evaluation method and device based on raindrop spectrum parameters, and is applied to the technical field of atmospheric detection. The method comprises the following steps: carrying out quality control processing on raindrop spectrometer data; performing radar reflectivity factor data space matching on the weather radar data and the quality-controlled raindrop spectrometer data based on a preset space matching rule to obtain a radar reflectivity factor value and scanning time of the weather radar corresponding to the raindrop spectrometer position; based on a preset time matching rule, according to the radar reflectivity factor value of the weather radar corresponding to the raindrop spectrometer position and the scanning time, carrying out radar reflectivity factor data time matching on the weather radar data and the raindrop spectrometer data after quality control to obtain matched raindrop spectrum parameters; and evaluating the matched raindrop spectrum parameters based on a preset evaluation rule. In conclusion, on the basis of ground raindrop spectrum parameters, verification and evaluation of weather radar reflectivity factor data can be carried out through space-time matching.

The invention provides an atmospheric waveguide measurement system, and mainly relates to the technical field of atmospheric detection. The atmospheric waveguide measurement system comprises an unmanned aerial vehicle-mounted device and a ground device, and the ground device is in communication connection with the unmanned aerial vehicle-mounted device; the unmanned aerial vehicle-mounted device comprises an unmanned aerial vehicle platform; one end of the measuring cable is fixedly connected with the unmanned aerial vehicle platform, and the swing angle of the measuring cable is smaller than a preset swing angle threshold value; the vertical sensor array comprises a plurality of meteorological sensing units which are arranged at intervals along the extension direction of the measuring cable and is used for synchronously acquiring meteorological data of a plurality of height layers; and the ground device is used for processing the meteorological data to obtain atmospheric waveguide parameters.

The invention relates to the technical field of multi-source meteorological observation in atmospheric exploration, and discloses an integrated learning method for automatically predicting thunder and lightning based on physical characteristics and a storage medium, and the method comprises the steps: determining multiple types of meteorological element input data for model training and corresponding thunder and lightning label data, and carrying out the time-space matching and data set division; training an integrated learning model through the input data of the various meteorological elements and the corresponding lightning label data, wherein the integrated learning model comprises a prediction module, a base learner module and a meta learner module which are connected in sequence; and inputting real-time multi-class meteorological element data of an area to be subjected to lightning prediction into the trained integrated learning model, and obtaining lightning prediction results in the future 1-6 hours. By means of the method, whether thunder and lightning exist within 1-6 hours or not can be automatically, efficiently and accurately predicted.

The application discloses a method for extracting middle layer top temperature multi-period characteristics and analyzing influencing factors, and belongs to the technical field of atmospheric detection and meteorological data analysis. The method first extracts time series data of the middle layer top temperature based on the 90km height and the lowest temperature point standard, then completes time domain trend and mutation analysis through seasonal departure and Mann-Kendall test, adopts discrete wavelet decomposition to obtain four main oscillation periods of 3 years, 7 years, 11 years and 22 years, then uses continuous wavelet to obtain the length of the fine-calibrated period, and finally performs cross wavelet analysis on the quasi-biennial oscillation, the El Nino effect and the solar activity index to obtain the final correlation and time lag results. The application realizes joint time-frequency domain analysis of discrete wavelet transform, continuous wavelet transform and cross wavelet transform, effectively improves the cycle recognition accuracy, quantifies the multi-scale correlation and time sequence hysteresis of each factor, and provides a new research idea for high-altitude atmospheric climate influencing factor analysis.

The invention provides a laser radar continuous scanning detection method based on user-defined path planning, and belongs to the field of atmospheric detection laser radars, and the method comprises the steps: receiving a path planning instruction inputted from the outside, and analyzing the path planning instruction into a discrete sequence composed of a plurality of path points; defining a path section between any two adjacent path points as a scanning interval, and marking an observation interval or a transition interval; for the scanning interval marked as the observation interval, the scanning mechanism is controlled to smoothly move at a preset observation angular speed at a constant speed and continuously collect echo data, and for the scanning interval marked as the transition interval, the scanning mechanism is controlled to operate at a maximum acceleration and a maximum angular speed allowed by the system; and after the motion of the last scanning interval is completed, automatically returning to the initial position and repeatedly executing the previous steps until an instruction of stopping or reconfiguring the path is received. According to the invention, the transient change of the atmospheric process can be captured more quickly, and the detection efficiency is improved.

The invention relates to a multi-aperture spaceborne atmospheric detection laser radar transmit-receive matching method. The method comprises the following steps: establishing a laser radar transmit-receive matching system; the laser emitting unit emits reference laser to enter the first receiving telescope unit; receiving and transmitting matching adjustment of the first receiving telescope unit is completed; the laser emitting unit emits main laser, and the N receiving telescope units perform imaging; imaging of the first receiving telescope unit is taken as a standard, and transmitting-receiving matching adjustment of the rest N-1 receiving telescope units is realized through the comprehensive control processing unit; the laser emitting unit emits main laser to realize integral imaging; the equivalent receiving area of a large-aperture telescope can be realized by splicing a plurality of small-aperture telescopes, the volume and the weight of the receiving telescope can be compressed by utilizing the characteristic of short focal length of the small-aperture telescope, and meanwhile, the small-aperture telescope has the advantages of low processing cost, short period, good stability and the like.

The invention belongs to the technical field of flight control atmosphere detection systems, and discloses a mechanical structure of an extension type atmosphere product, which comprises a sensor, a lifting disc, a screw rod, a gear set, a cabin door, a bearing, a limiting mechanism, a motor, a gear rack and a compression spring, the sensor is used as atmospheric equipment; the sensor is installed on the lifting disc, a ball on the lifting disc is matched with a guide rail of the screw rod, the bottom of the screw rod is connected with the gear set, the gear set is connected with the cabin door, bearings are installed on the upper portion and the lower portion of the screw rod, a telescopic spring bolt of the limiting mechanism is combined with a small hole in the lifting disc, the motor is installed on the lifting disc, and a gear in a gear rack is installed on the motor.

The present application belongs to the technical field of atmospheric detection and prediction, and particularly relates to a credibility quantification method, system and device based on vertical atmospheric prediction. The method dynamically constructs a vertical correlation graph based on the vertical correlation between a single detection height and the target height for any number of target heights, and then learns the vertical correlation between the detection height and each target height in parallel through a vertical graph attention network to output meteorological variable prediction results. The uncertainty of each target height prediction result is quantified based on the vertical correlation strength and decomposed into two types of uncertainty, namely inherent and cognitive uncertainty. Finally, a unified credibility index is output. The training and verification process is combined to ensure the applicability of the method. The present method can be flexibly adapted to different target height number scenarios, aiming to achieve accurate prediction from a single detection height to any number of target heights, and to provide quantitative credibility evaluation for the prediction results, thereby providing a reliable basis for decision-making in the field of atmospheric science.

The invention provides a raindrop size distribution inversion method and system based on a micro-rain radar, and relates to the technical field of atmospheric exploration, and the method comprises the steps: collecting a backscattering signal of a raindrop through the micro-rain radar; wherein the back scattering signal comprises a distance library identifier, a raindrop diameter, a radar wavelength and a reflectivity spectrum; determining a height correction factor of the raindrop based on the distance library identifier; based on the height correction factor and the raindrop diameter, determining the falling speed of the raindrop; determining a velocity reflectance density spectrum relative to the falling velocity based on the falling velocity and the reflectance spectrum; determining a backscattering cross section of the raindrop based on the raindrop diameter and the radar wavelength; and determining raindrop size distribution based on the velocity reflectivity density spectrum, the falling velocity, the raindrop diameter and the backscattering cross section. According to the method, various factors influencing raindrop size distribution inversion can be fully considered, errors caused by inaccurate parameters, incomplete factor consideration and the like are effectively reduced, and the inversion result is more accurate and reliable.

The invention, which belongs to the technical field of atmospheric environment remote sensing monitoring, provides an embedded miniature atmospheric detection laser radar control platform comprising an ARM master control core board, an FPGA acquisition card and a bottom board. The ARM main control core board is in communication connection with the FPGA acquisition card through an FSPI bus, and the ARM main control core board is in detachable stacking connection with the bottom board through an industrial-grade board-to-board connector; the bottom plate is provided with a laser control interface, a scanning mechanism control interface and a network communication interface which are respectively used for connecting a laser emitting unit, a scanning mechanism and external communication equipment; an embedded operating system, laser radar control and inversion algorithm software, a data storage module and a network communication function module are integrated in the ARM master control core board. According to the invention, the laser radar system can meet the requirements of unmanned aerial vehicle load, field observation and other application scenes with strict limitation on weight and space.

The invention provides an atmospheric detection laser radar observation method based on an unmanned aerial vehicle, and relates to the technical field of laser radar atmospheric detection, and the method comprises the steps: constructing a detection subsystem independent of an unmanned aerial vehicle flight control system; the unmanned aerial vehicle carrier and the detection subsystem are started, and current spatial position information and attitude information are calculated and output in real time; planning a flight route covering the target area; the unmanned aerial vehicle carrier is controlled to fly along the planned flight route, and the atmospheric detection laser radar executes continuous collection operation; the atmospheric detection laser radar reads the spatial position information and attitude information at the current moment output by the high-precision positioning and orientation module in real time through the electrical communication interface; and combining the read spatial position information and attitude information with the original echo data by the atmospheric detection laser radar to form observation data with geographic space-time labels, and storing the observation data until flight tasks of all air routes are completed. According to the invention, the fine observation requirement of pollutant traceability in a complex scene is met.

The invention provides an attitude compensation method, system and device for a vehicle-mounted wind measurement laser radar and a medium. The attitude compensation method comprises the steps of obtaining attitude information of a vehicle, installation position information and scanning parameters of the vehicle-mounted three-dimensional scanning wind measurement laser radar and collected atmosphere detection data; according to the attitude information, the installation position information and the scanning parameters of the vehicle, attitude correction information of the laser radar is determined; performing attitude compensation on the atmosphere detection data according to the attitude correction information to obtain compensated atmosphere detection data; performing timestamp alignment on the compensated atmospheric detection data, the positioning information of the vehicle and the mileage counting information to obtain fused atmospheric detection data, and performing attitude compensation on the laser radar according to the fused atmospheric detection data; the method can achieve the precise compensation of the attitude of the vehicle-mounted three-dimensional scanning wind measurement laser radar, eliminates the interference of the vehicle attitude, the installation position and the scanning parameters, guarantees the accuracy of atmospheric detection data in a moving state, and improves the measurement precision of an atmospheric wind field.

The invention provides an atmospheric detection method and system based on an unmanned aerial vehicle, and belongs to the technical field of low-altitude meteorological detection and unmanned aerial vehicle application crossing. The method comprises the steps that S1, the unmanned aerial vehicle obtains a detection task; s2, on the basis of takeoff of a detection task, original meteorological data and space-time pose information are collected in real time and fused to obtain an integrated remote sensing data stream, and the integrated remote sensing data stream is transmitted back to the ground station; s3, the unmanned aerial vehicle analyzes the integrated remote sensing data flow to obtain a meteorological event; s4, performing dynamic re-planning on the route based on the meteorological event, generating a self-adaptive route, and transmitting the self-adaptive route back to the ground station; s5, the ground station displays the integrated remote sensing data stream and the adaptive route, and sends a route adjustment instruction to the unmanned aerial vehicle based on the triggered approval signal; and S6, after the unmanned aerial vehicle verifies the route adjustment instruction, atmospheric detection operation is executed based on the self-adaptive route. The method has the advantages that the intelligent level and the operation efficiency of atmosphere detection are greatly improved.

The embodiment of the invention provides an anti-rainfall interference wind profile radar atmospheric turbulence vertical velocity detection method, which is applied to the technical field of atmospheric detection. The method comprises the following steps: acquiring and preprocessing original power spectrum data; performing noise level estimation on the preprocessed data based on a sliding Z test method to obtain denoised data; initial spectrum peak detection is carried out on the denoised data, the window width of a filter is determined based on a detection result, and then smooth filtering is carried out on the denoised data; performing effective spectrum peak detection on the filtered data based on a preset physical condition, and identifying an atmospheric turbulence signal peak and a rainfall signal peak based on a detection result; gaussian fitting is carried out on the recognized signal peaks, spectral moment parameters of fitting spectral lines are calculated, and then the atmospheric turbulence vertical movement speed and the rainfall falling speed are inversed. In this way, a key technical support can be provided for a scene where high-reliability atmospheric turbulence vertical motion information needs to be obtained.

The application discloses a microwave water vapor absorption channel cross-calibration method based on moon observation, and the method comprises the following steps: according to the orbit prediction data of the moon entering the cold space observation area of a microwave radiometer, cold space observation data containing moon influence of five channels near the atmospheric detection water vapor absorption line are extracted from a frame of observation data downloaded from the satellite-borne microwave radiometer; the cold space observation data of a reference channel without moon influence is obtained by using the steady-state constraint principle and the cold space observation data of the preselected reference channel, and the calibration coefficient of the reference channel is calculated; the cold space observation radiation of the reference channel containing moon influence is obtained according to the calibration; the cold space observation radiation of the reference channel containing moon influence is used for calibration of other channels based on the transmission relationship of the cold space observation radiation of the five channels, so that the cross-calibration between the channels is realized, and the calibration coefficients of the channels are calculated; and the target brightness temperature of the five channels for the earth observation near the water vapor absorption line is calculated according to the calibration coefficients of the channels.

The present application relates to the technical field of satellite remote sensing, and particularly relates to a kind of infrared hyperspectral atmospheric probe geometry simulation and registration method, by obtaining the detection time of HIRAS one pixel FOV, ground longitude, ground latitude and satellite position, the view vector of the pixel under the reference ellipsoid coordinate system is constructed;Rodriguez rotation formula is used, based on the size of pixel field of view, the imaging range of HIRAS pixel on the ground is simulated, the pixel of MERSI in the same platform is searched using KD-tree, according to the spectral convolution function and blackbody radiation formula, the equivalent brightness temperature of HIRAS pixel and the equivalent brightness temperature of MERSI simulation image are calculated respectively;The root mean square error of brightness temperature difference between HIRAS pixel and MERSI pixel is accumulated and counted by multiple rows, the root mean square error is arranged according to the FOR row timing, and the geometric positioning accuracy of HIRAS in the along-track and across-track directions is obtained.The present application realizes the fast search of the nearest pixel in the range of view vector, and realizes the accurate position determination of registration error.

The hail manufacturing method for the aircraft impact test is suitable for airborne atmospheric detection equipment to adopt a starting wind tunnel device for testing, and comprises the following steps: preparing a metal mold, preparing a mixed aqueous solution, putting the mixed aqueous solution into the metal mold, and cooling to form an ice ball; starting refrigeration equipment and spraying equipment in the wind tunnel device to set environmental parameters of a test area of the wind tunnel device according to test requirements: placing the ice ball in the spraying equipment, starting the ice ball to enable the ice ball to be in a rotating or rotating state, and spraying supercooled water drops to the ice ball in a dynamic state through the spraying equipment, according to the simulation hail simulation device, the ice hockey is arranged on the surface of an ice hockey to form an ice layer on the surface of the ice hockey, the ice hockey on which the ice layer is secondarily formed is alternately placed in various cloud field environments adjusted according to test requirements, finally, simulation hail with alternate transparent layers and opaque layers is formed, and the simulation hail is stored in a refrigerator at the temperature of-30 DEG C, so that the authenticity and precision of a test are improved.

The utility model relates to a scanning mirror for laser radar relates to laser radar atmospheric sounding field specifically relates to a scanning mirror for laser radar, the utility model has overcome the problem of radar mirror in prior art on the basis of extensive scanning too large size, in the scanning mirror, the azimuth axis motor and azimuth transmission assembly all are fixed in the lower surface of base plate, be provided with through -hole on the base plate, the azimuth axis seat and azimuth axis mirror seat are all cylindrical, and both are coaxial, the upper end of azimuth axis seat is embedded in the through -hole, and with the lower end fixed connection of azimuth axis mirror seat, the upper end of azimuth axis mirror seat with azimuth axis reflector fixed connection, the pitch support board sleeve joint fixed in the azimuth axis mirror seat outside, the pitch axis motor is fixed on the pitch support board, the output shaft of pitch axis motor drives the pitch axis reflector rotation through the pitch transmission assembly, the scanning mirror of the utility model reduces the volume and weight, is applicable to more scene.

An Ethernet-based atmospheric detection laser radar cooperative control device disclosed by the present invention comprises a master control module, the master control module is connected with an atomic clock, an external network interface module and a switch, and the switch is communicated with each Ethernet control module through the Ethernet. The three-frequency switching device, the variable pulse laser, the program control chopper and the photon counting acquisition card are connected and are respectively connected with the corresponding Ethernet control modules through the corresponding waveform generators, and the day and night switching device and the data transmission computer are respectively connected with the corresponding Ethernet control modules. The invention further discloses an atmosphere detection laser radar cooperative control method based on the Ethernet. The master control module is used for enabling clocks of the Ethernet control modules to be synchronized, and the corresponding working modules drive time sequences of control waveforms to be synchronized or modified in real time. The method is compatible with automatic and intelligent control of equipment, the time sequence waveform driving capacity is high, the equipment is simplified and integrated, and flexible deployment is easier.

The invention discloses a wind tunnel test method for evaluating aerodynamic noise performance of a rotorcraft, belongs to the field of wind tunnel tests, and provides a standard wind tunnel test method for aerodynamic noise of the rotorcraft by comprehensively considering the aerodynamic noise characteristics of the rotorcraft and the influence of an acoustic wind tunnel environment. The aerodynamic noise radiation characteristics of the rotorcraft can be effectively measured; a normative rotor aircraft model aerodynamic noise wind tunnel test data processing flow and method are established, and a method for extrapolating a rotor aircraft model aerodynamic noise wind tunnel test result to a real object is provided, so that the influence of background noise, a wind tunnel jet flow shear layer, atmospheric sound absorption, Doppler, a model scale and the like on test evaluation can be effectively corrected; and the accuracy of aerodynamic noise characteristic evaluation of the rotorcraft is effectively improved. The test method is standard in process, clear in data processing theory and feasible in data processing method, and can provide means and technical support for aerodynamic noise performance evaluation of the rotorcraft.

The invention provides a rainfall attenuation self-adaptive revision method and system based on a micro-rain radar, and relates to the technical field of atmospheric exploration, and the method comprises the steps: determining the number of layers of a current distance library and accumulated path attenuation data; acquiring an initial raindrop spectrum corresponding to the layer number of the current distance library from a raindrop number concentration spectrum acquired by the micro rain radar; determining a preliminary revised raindrop spectrum based on the cumulative path attenuation data and the initial raindrop spectrum; based on a preset raindrop extinction cross section, a raindrop diameter interval and the preliminary revised raindrop spectrum, preliminary specific attenuation is determined; obtaining a final revised target raindrop spectrum based on the preliminary revised raindrop spectrum, the preliminary ratio attenuation and the distance resolution of the distance library; a final revised target ratio attenuation is determined based on the raindrop extinction cross section, the raindrop diameter interval, and the target raindrop spectrum. According to the method, the deviation of the raindrop related parameters obtained through inversion can be reduced, and more reliable data support is provided for the fields of meteorological research, rainfall forecast and the like.