8 results about "Atmospheric waveguide" patented technology

The application discloses a kind of marine low-altitude electromagnetic propagation environment evaluation method and system, it is related to marine electromagnetic environment monitoring and evaluation technical field, the method is constructed standardization dataset by collecting multi-source data, combined with physical-data collaborative constraint is carried out mesoscale waveguide prediction, and small-scale waveguide model is constructed by descending scale, and then cross-scale modeling is realized using space-time adaptive fusion algorithm, finally simulates electromagnetic wave propagation characteristics and carries out multi-dimensional evaluation and visual display;The application realizes the all-around characterization to marine low-altitude electromagnetic wave propagation characteristics by cross-scale accurate modeling and multi-dimensional comprehensive evaluation, can accurately present the constraint enhancement effect and blind area distribution of atmospheric waveguide, provides accurate technical support and data reference for the practical application of marine communication, detection and navigation system, effectively guarantees electromagnetic performance research and system efficiency play under marine environment.

The application 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 device and a ground device, and the ground device is in communication connection with the unmanned aerial vehicle device; wherein the unmanned aerial vehicle device comprises: an unmanned aerial vehicle platform; a measurement cable, one end of the measurement cable is fixedly connected with the unmanned aerial vehicle platform, wherein the swing angle of the measurement cable is less than a preset swing angle threshold; a vertical sensor array comprising a plurality of meteorological sensing units which are arranged at intervals along the extension direction of the measurement cable, and is used for synchronously collecting meteorological data of a plurality of height layers; and the ground device is used for processing the meteorological data to obtain atmospheric waveguide parameters.

A kind of lidar technology for atmospheric waveguide fast measurement, temperature and humidity profile, the key factor of atmospheric waveguide, can be measured simultaneously, the device includes laser emission module: 822nm online seed laser, 822nm offline seed laser, 1064nm pump laser, laser frequency locking module, optical parametric oscillator, acoustooptic modulator, frequency doubling module and emission optical assembly;Echo receiving module: optical receiving telescope and optical lens assembly, F-P filter, polarization light splitting prism, iodine molecular absorption cell, Fizeau interferometer and photodetector;Data acquisition and processing module.The present application fuses differential absorption lidar and two detection systems based on interferometer high spectral lidar, adopts seed injection optical parametric oscillator laser technology, obtains high frequency stability 822nm laser to realize atmospheric humidity profile fast measurement, remaining 532nm laser realizes atmospheric temperature profile fast measurement, finally inverts atmospheric waveguide parameter, realizes atmospheric waveguide efficient and accurate measurement.

Embodiments of the disclosure describe a method for dynamically configured beam forming that mitigates remote interference experienced by a second base station (200) while scheduling at least one of uplink and downlink transmission for a plurality of UEs (201) associated with the second base station (200). The method includes receiving a plurality of Radio Frequency (RF) signals from a first base station (100). The plurality of RF signals is traversed through a multipath propagation channel and has been interfered by the atmospheric ducting propagation. The method includes determining a multipath channel impulse response (Hij) corresponding to each path and scatterer associated with the plurality of received RF signals. The method includes dynamically configuring beam forming for the plurality of UEs (201) associated with the second base station (200). The beamforming is dynamically configured based on the multipath channel impulse response (Hij).

This invention discloses an over-the-horizon radar sea clutter propagation and scattering simulation system, belonging to the field of simulation technology. The system adopts a heterogeneous parallel computing architecture, including a radio wave propagation modeling module, a propagation-scattering bidirectional coupling module, and a sea surface electromagnetic scattering modeling module. The output of the radio wave propagation modeling module is connected to the input of the propagation-scattering bidirectional coupling module, the output of the propagation-scattering bidirectional coupling module is connected to the input of the sea surface electromagnetic scattering modeling module, and the output of the sea surface electromagnetic scattering modeling module is connected to the input of the propagation-scattering bidirectional coupling module. Using this system, through propagation-scattering bidirectional coupling, nonlinear time-varying sea surface generation, and a parallel architecture, this invention achieves physically self-consistent, high-fidelity, and high-efficiency sea clutter simulation, accurately reproducing the characteristics of all sea states, and providing key support for over-the-horizon radar performance evaluation, clutter suppression, and atmospheric waveguide inversion.

The application discloses a low-altitude atmospheric waveguide analysis method and system for electromagnetic propagation optimization, and relates to the technical field of ocean atmospheric environment detection and electromagnetic propagation. The specific steps of the method are as follows: synchronously collecting multiple types of marine meteorological data of a target sea area, and constructing a standardized data set after processing; constructing a physical constraint deep neural network to generate a mesoscale parameter field; constructing a model with a correction mechanism to generate a small-scale profile model; constructing a multi-scale fusion model to output a spatio-temporal prediction result; analyzing characteristics, outputting an optimization strategy and feeding back reversely to complete whole-process optimization. The application realizes fine waveguide modeling from mesoscale to small scale, and improves the accuracy of atmospheric waveguide feature representation by constructing a physical constraint deep neural network and introducing an interface inclination angle correction mechanism. The application realizes cross-scale adaptive fusion, improves prediction accuracy, establishes a reverse feedback mechanism to promote whole-process optimization, and better adapts to the requirements of a marine electromagnetic system by constructing a multi-scale fusion model.

This application provides a method, apparatus, device, and storage medium for forecasting marine phenomena. The method includes: acquiring marine meteorological forecast data for a future period; extracting forecast data for at least one key factor from the marine meteorological forecast data, wherein the key factor is associated with at least one target phenomenon; determining corresponding detection algorithms for the target phenomena associated with the key factor according to a preset mapping relationship; the preset mapping relationship indicating the association rules between the key factor and the detection algorithms for the target phenomena; and processing the marine meteorological forecast data using the detection algorithms determined for each target phenomenon to obtain a forecast result for at least one target phenomenon. The target phenomena include at least one of the following: mesoscale eddies, atmospheric waveguides, oceanic acoustic channels, and temperature strata. Thus, by extracting key factors and dynamically configuring algorithm parameters, forecast accuracy and reliability can be improved.

The application provides a fusion atmospheric waveguide measurement system and method, and mainly relates to the technical field of meteorological application. The fusion atmospheric waveguide measurement system comprises: a shore-based iron tower detection subsystem configured to perform continuous vertical profile meteorological parameter measurement at a fixed point to obtain a first meteorological data sequence; an unmanned aerial vehicle (UAV) suspension cable detection subsystem configured to perform vertical profile meteorological parameter measurement in a target area to obtain a second meteorological data sequence; and a data processing module configured to calibrate the second meteorological data sequence based on the first meteorological data sequence and the second meteorological data sequence obtained by synchronous measurement at an overlapping height, and fuse the calibrated second meteorological data sequence with the first meteorological data sequence to generate a fusion atmospheric waveguide parameter.