7 results about "Mesosphere" patented technology

The invention provides a method for remote sensing detection of a Jinstar intermediate layer atmosphere horizontal wind field profile by using a microwave limb radiometer, and the method comprises the steps: designing a detection channel of the Jinstar intermediate layer atmosphere horizontal wind field profile based on the characteristics of a Jinstar gas spectral line, obtaining radiation brightness temperature observation values of the detection channel at different tangent heights in two orthogonal directions through a microwave limb radiometer carried by a star orbiter; the characteristics of the golden star gas spectral lines are as follows: in a microwave frequency band, the golden star atmospheric trace gas spectral lines are rich and have obvious absorption peaks, and the high-speed atmospheric motion of the middle layer enables the gas absorption spectral lines to generate obvious Doppler frequency shift; and through physical iteration inversion, inversion is carried out based on the radiation brightness temperature observation value to obtain a golden star intermediate layer atmosphere horizontal wind field profile. The method has the advantages that back scattering and other intermediate processes are not needed, the method is basically not affected by ground surface high-temperature radiation, and continuous, stable, high-temporal-spatial-resolution and high-precision star intermediate layer atmosphere horizontal wind field profile information can be obtained all day long.

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 discloses a method for analyzing long-term response of ozone in the Antarctic stratosphere to high-energy particle sedimentation, which comprises the following specific steps: firstly, acquiring vertical distribution characteristics of ozone from the Antarctic stratosphere to the middle layer from January to December in 30 years, and drawing a historical vertical distribution diagram; compiling a special method technical scheme for analyzing the long-term response of the ozone in the Antarctic stratosphere to the sedimentation of the high-energy particles, and carrying out technical disclosure to workers; then, the geomagnetic index is adopted as an agent index of high-energy particle sedimentation, a unary linear regression model of the southern hemisphere winter atmospheric variable is established, and the regression model is shown in the specification. The process that high-energy particles are settled and generated and conveyed to the stratosphere through polar region vortex and the ozone loss chemical process of the high-energy particles can be quantitatively analyzed, and the potential influence of extreme space weather events on an earth climate system can be conveniently evaluated.

This invention belongs to the field of lidar technology and discloses an iron resonance fluorescence Doppler lidar system. It employs a seed injection method, injecting a single-longitudinal-mode, frequency-stabilized seed light of a certain power into an oscillator stage unit. Through active cavity control technology, precise matching of the seed light frequency and the longitudinal-mode frequency of the oscillator stage is achieved, enabling the oscillator stage to output Q-switched pulses with good transverse-mode and frequency characteristics. Subsequently, the Q-switched pulses are amplified in the amplification stage unit using a MOPA configuration. After two nonlinear frequency transformations, single-longitudinal-mode narrow-linewidth laser output at a specific wavelength is achieved. This system uses iron atoms in the atmosphere as tracers, enabling high-precision detection of atmospheric temperature, wind field, and iron atom number density in the region from the top of the mesosphere to the bottom of the thermosphere.

The invention belongs to the technical field of atmospheric measurement, and discloses a measurement method for acquiring atmospheric parameters by using iron resonance fluorescence echo signals, which comprises the following steps of: quantitatively describing a physical model of an iron atom resonance fluorescence spectral line, and establishing a warm wind two-dimensional lookup table; the iron resonance fluorescence Doppler laser radar echo signals after data preprocessing are substituted into a two-dimensional lookup table, and atmospheric temperature and radial wind speed measurement results are obtained. By means of the measuring method, the atmospheric temperature and the vertical distribution profiles of the warp wind and the weft wind can be obtained at the same time, the detection precision is determined, and an effective data processing means is provided for fine research of the atmosphere in the area from the top of the middle layer to the bottom of the thermal layer.

The invention provides a method for simultaneously detecting 80-100 km temperature and wind field and 0-30 km wind field based on a satellite-borne iron laser radar, and relates to the technical field of atmosphere remote sensing, and the method comprises the steps: transmitting laser with the wavelength of 372 nm to an atmosphere UMLT region through the satellite-borne iron laser radar, and calculating the number of echo photons generated by the resonance fluorescence effect of received iron atoms; a temperature response function and a wind speed response function are defined according to the echo photon number, the atmospheric temperature of the 80-100 km area is calculated according to the temperature response function, and the atmospheric wind speed of the 80-100 km area is calculated according to the wind speed response function; and calculating the atmospheric radial wind speed of 0-30km according to the number of echo photons based on the Doppler principle. According to the method provided by the invention, atmospheric parameters of 0-30 km and 80-100 km are detected simultaneously based on the satellite-borne iron radar, and wind field and temperature profile information can be acquired in a high-precision manner all day long.

A super-cooled large droplet detector, which can accurately and reliably identify and distinguish super-cooled large droplet freezing weather. The super-cooled large droplet detector comprises a detector base and a detection structure, wherein the detection structure is used for detecting super-cooled droplets in airflow and for identifying freezing weather and distinguishing super-cooled large droplet freezing weather from the freezing weather; an outer layer of the detection structure is a temperature sensor layer, an intermediate layer thereof is an electric heating film layer, and an inner layer thereof is a structure substrate; the electric heating film layer provides heating energy by means of a plurality of electric heating loops, such that the surface of the detection structure maintains at a uniform temperature; the temperature sensor layer is provided with a plurality of temperature sensors; and a controller is provided in the structure substrate, and the controller infers an impact range of the super-cooled droplets by means of temperature changes, which are caused by the super-cooled large droplets impacting the detection structure, at a plurality of different positions, and determines, by means of determining whether the impact range exceeds a critical impact range obtained when the super-cooled droplets exceeding a critical size impact the detection structure, whether the previous impacting super-cooled droplets are super-cooled large droplets.