22 results about "Atmospheric effect" patented technology

The invention discloses a remote sensing data-based cultivated land resource dynamic monitoring and checking method and system, and the method comprises the steps: introducing atmospheric scattering parameter estimation in an atmospheric correction process, carrying out the refined estimation of the atmospheric path radiation through combining with the water vapor content and aerosol concentration, and optimizing the atmospheric correction parameters, thereby achieving the dynamic monitoring and checking of cultivated land resources. And the interference of the atmospheric effect on the surface reflectance is effectively weakened. Spectral response function matching and spectral feature standardization processing are implemented, and a spectral difference correction model is constructed, so that the spectral features of the multi-temporal images tend to be consistent. The spectral deviation caused by atmospheric condition fluctuation is remarkably reduced, and the comparability of spectral response between images is improved, so that the accuracy and the stability of cultivated land change detection are improved. And finally, change feature extraction and region identification are performed on the basis of spectrum consistency enhancement, so that the actual change condition of cultivated land resources can be reflected more truly, misjudgment caused by atmospheric noise is reduced, and the reliability of a dynamic monitoring result is enhanced.

Systems and methods for generating and using statistical models to mitigate atmospheric effects in images are described. In some embodiments, a statistical model may be generated by selecting a vegetation type that grows in continuous healthy canopies; identifying a vegetation reference value that is a stable reflectance property of the vegetation type; in a plurality of images, selecting one or more plots of the vegetation type and obtaining top-of-atmosphere reflectance for the plots; selecting discrete areas near the plots and obtaining top-of-atmosphere reflectance for the discrete areas; obtaining image statistics for the discrete areas; and generating a statistical model based on the acquired data.

This provides a real-time kinematic (RTK) solution for mobile devices with multi-constellation, multi-frequency (MCMF) capabilities, where a single base station may have a baseline much farther than that of a traditional base station. To achieve this, the embodiment addresses atmospheric effect differences between the rover and the base station when the GNSS positioning of the mobile device (rover) is fixed, thereby allowing the determination of individual tropospheric delay errors at the base station. The embodiment can utilize additional satellite measurements that are not available without RTK correction, and can also use orbital clock correction for these additional satellite measurements.

The invention provides a rapid calculation method for entrance pupil laser power and pixel coordinates of a three-dimensional simulation imaging system, and the method comprises the steps: carrying out the comprehensive analysis of the turbulence, thermal halo and attenuation effects of laser in the atmosphere transmission process, and obtaining the laser irradiance distribution changing with the position in a plane perpendicular to the propagation direction; calculating laser radiation intensity distribution in different directions according to laser irradiance distribution on the basis of a radiance principle; based on the laser radiation intensity distribution, laser power is calculated through a laser interference power quantitative algorithm; and based on a three-dimensional rendering engine, obtaining a pixel position interfered by laser through laser power and a ray tracing algorithm. According to the method, the laser light field information containing the atmospheric effect is processed, the laser power received by the infrared camera and the interfered pixel position are obtained through rapid calculation, and the simulation effect and the calculation efficiency are improved.

This invention discloses an evaluation method for future generated images of outdoor scenes based on multiple environmental factors. To explore the relationships between various environmental factors in an outdoor scene and evaluate the effect of generated images over a future period, firstly, the actual and predicted values ​​of meteorological data, as well as the predicted value of solar position information, are obtained; then, the prediction probability of the effect of illumination on the generated image is calculated using the total probability formula; finally, the aerosol transfer function (MTF) is used... a Prediction probability and turbulence transfer function (MTF) e The prediction probability calculation calculates the predicted probability of atmospheric effects on the generated image; finally, the overall predicted probability of both factors on the generated image is used to evaluate the effect of the generated image in the outdoor scene over a long period of time. This invention adds an evaluation index for the effect of image generation over a long period of time. Based on the causal relationship of dynamic factors affecting the image, it uses the predicted and actual values ​​of environmental element data in the outdoor scene to calculate the predicted probability of the generated image. The parameter information is simple to obtain, applicable to different outdoor scenes, and highly portable.

The invention discloses an L-band high-orbit SAR full-link radiometric calibration method based on satellite-ground cooperation, and the method comprises the following steps: S1, obtaining a hardware gain function changing along with a space angle based on echo data and RCS information between a micro-nano satellite carrying an active transponder and a high-orbit SAR satellite; s2, a pre-trained deep learning model is utilized to obtain software gains changing along with working parameters; and S3, performing high-precision radiometric calibration on the input to-be-calibrated high-orbit SAR image by using a full-link gain model obtained based on a hardware gain function and a software gain, and inverting the absolute radar cross-sectional area sigma of the target. According to the method, the problems of high-sea far-field calibration difficulty, long calibration period, uncalibrated ground processing software gain, obvious atmospheric effect influence and the like of a high-orbit SAR satellite can be solved, the separation calibration of the gain of a whole link from a space antenna to the ground processing can be realized, and the difficulty of software and hardware gain coupling in a traditional method is solved.

This disclosure provides an information display method, apparatus, electronic device, and storage medium, belonging to the field of Internet technology. Targeting scenarios where users browse multimedia resources, this disclosure automatically renders the atmosphere of the multimedia resources currently displayed on an information feed page without manual intervention. Specifically, when displaying multimedia resources on an information feed page, in addition to presenting the multimedia resources themselves, this disclosure also synchronously displays atmospheric effects on the information feed page based on at least one of the resource content, environmental information of the terminal's current location, or the current date. This achieves atmospheric rendering of the multimedia resources, effectively enhancing their visual presentation and thus enabling efficient information delivery.

The present application belongs to the technical field of photoelectric countermeasure simulation, and relates to a laser jamming image simulation method based on coupling of atmospheric effect and detector response. The method comprises: obtaining laser emission parameters and atmospheric parameters; generating a dynamic spot sequence, determining the cumulative charge amount of the detector within the integration time, and calculating the flicker modulation factor; determining the coupled charge amount, saturation crosstalk coupling simulation and thermal effect coupling simulation, and calculating the corrected coupled charge amount; using the corrected coupled charge amount to superimpose the imaging system noise to generate the final laser jamming coupling simulation image. The present application solves the problem of time scale mismatch, so that the simulation image has real flicker texture; the flicker modulation factor is introduced to quantify the modulation effect of light intensity fluctuation on the cumulative charge; the coupling of thermal effect and charge response is realized; through time sequence spot generation and integration accumulation coupling, the influences of dynamic processes such as atmospheric turbulence, light intensity flicker, saturation crosstalk and thermal accumulation are completely retained.

A target-free laser correction system including a primary laser emitter configured to emit a primary laser beam on a target in a target zone, a secondary laser emitter configured to emit a secondary laser beam on a region of air in the target zone, optics optically coupled to the primary laser emitter and the secondary laser emitter. The optics may be configured to optically focus the secondary laser beam on the region of air in the target zone, correct a distortion of a wavefront of the secondary laser beam caused by atmospheric effects on the secondary laser beam, and focus the primary laser beam on the target in the target zone. Also included is a sensor configured to detect energy emitted from laser induced plasma created by the secondary laser beam, and a controller configured to control operation of the primary laser emitter, secondary laser emitter, optics and sensor.

The invention discloses a surface deformation inversion method considering an atmospheric effect, and relates to the technical field of remote sensing. The method comprises the following steps: screening out differential interferograms influenced by atmospheric pollution from a plurality of initial differential interferograms to obtain a plurality of differential interferograms; performing principal component analysis on the evaluation factors of the differential interferogram to obtain the weight of each evaluation factor; performing weighted summation on the values of all the evaluation factors and the weights of the evaluation factors to obtain a comprehensive score of the differential interferogram, performing screening according to the comprehensive score to obtain a target differential interferogram, and constructing an interferogram network; performing interference net inversion to obtain a phase value of each pixel in the interference pattern network, and sequentially performing earth tide phase correction, atmospheric delay phase correction and terrain phase residual correction on the phase values of the pixels to obtain corrected phase time sequence data; and obtaining earth surface deformation information of the research area based on the corrected phase time sequence data. According to the method, the precision of surface deformation inversion is improved.

The application provides a foundation SAR environment error correction method and device, comprising: taking a radar reflector as a reference target for radiation calibration of the foundation SAR, and obtaining reference datum; obtaining accumulated original displacement data of the foundation SAR, and comparing and verifying the reference datum; reading real-time meteorological element data, vibration data and position data of a monitoring point; establishing an atmospheric refractive index model based on the meteorological element data, and calculating atmospheric effect error; calculating offset error through the vibration data; obtaining environment correction error based on the offset error and the atmospheric effect error; obtaining corrected foundation SAR data based on the environment correction error; and comparing and verifying the corrected foundation SAR data with the reference datum. The scheme combines meteorological data with vibration data, displacement data and the like, has good environment error correction precision and feasibility, and can verify the accuracy of correction through the reference datum of the device, and provides a basis for slope stability analysis of a monitoring area.

Techniques for simulating an atmospheric effect in an AV simulation system are described. In one embodiment, a method for simulating an atmospheric effect including a plurality of particles suspended in an atmosphere may include receiving a first parameter defining a density of the plurality of particles comprising the atmospheric effect; receiving at least one second parameter defining a location of the atmospheric effect relative to a vehicle in a scene generate by the simulation system; and simulating the atmospheric effect in the scene as defined by the first parameter and the at least one second parameter.

A target-free laser correction system including a primary laser emitter configured to emit a primary laser beam on a target in a target zone, a secondary laser emitter configured to emit a secondary laser beam on a region of air in the target zone, optics optically coupled to the primary laser emitter and the secondary laser emitter. The optics may be configured to optically focus the secondary laser beam on the region of air in the target zone, correct a distortion of a wavefront of the secondary laser beam caused by atmospheric effects on the secondary laser beam, and focus the primary laser beam on the target in the target zone. Also included is a sensor configured to detect energy emitted from laser induced plasma created by the secondary laser beam, and a controller configured to control operation of the primary laser emitter, secondary laser emitter, optics and sensor.

A system and method for measuring and compensating for aero-optical and aero-thermal effects on a window / dome (102) of an EO / IR sensor on a supersonic vehicle. Range gating of the laser pulse measures and separates aerodynamic and atmospheric effects. Separate control algorithms and control loops with different update rates simplify the control algorithm and improve overall performance. Using a MEMS MMA (124) with tip / tilt / piston capabilities as a deformable mirror to provide wavefront correction improves overall performance. The compensated laser pulse can also be used to actively illuminate a target to provide both active and passive detection.

The present disclosure provides a method for analyzing urban thermal radiation based on sky view factor, including: operation S10, calculating the urban surface emissivity based on different building components; operation S20, performing atmospheric correction on the in-pupil radiance and obtaining the atmospheric effect parameters; operation S30, obtaining the sky view factor of the urban area of different building components based on the solved DSM data; operation S40, pre-constructing an urban thermal radiation analysis model based on the sky view factor, taking the urban surface temperature, urban surface emissivity, urban sky view factor, and atmospheric effect parameters as input parameters, and calculating the satellite in-pupil urban radiance. It also provides an urban thermal radiation analysis model for executing the above urban thermal radiation analysis method, which is applicable to the analysis and correction of urban area thermal radiation of satellite or airborne remote sensing data.

The systems, methods, and devices disclosed herein may be implemented as a closed loop feedback system to provide various atmosphere effects. The systems, methods, and devices may adjust the atmospheric effects based on one or more environmental measurements as part of a closed loop feedback system. As part of a closed loop feedback system, these systems, methods, and devices may detect or measure one or more physical characteristics, as some examples, such as temperature, air pressure, humidity, wind speed, wind direction, precipitation, odor, location, altitude, and / or azimuth. The systems, methods, and devices may compare the one or more physical characteristics to one or more performance objectives of the atmospheric effect and may adjust the atmospheric effect such that the one or more physical characteristics meet the one or more performance objectives of the atmospheric effect.

Systems and methods for creating synchronized environmental effects in a gaming environment are disclosed. A system includes an electronic game controller communicatively coupled to a plurality of shuffler devices and distributed environmental output devices. The controller detects a payout proximity trigger for a progressive jackpot game. In response, it analyzes shuffle-state image data from the shufflers to determine the card order of undealt portions of card decks. Based on the card order and game rules, the controller determines an anticipated timing for when a mystery card will be dealt. The controller uses this anticipated timing to synchronize an anticipatory notification across the environmental output devices, generating a coordinated, area-wide atmospheric effect that builds excitement for the upcoming jackpot win.

A system and method for measurement and correction of aero-optical and aero-thermal effects to an EO / IR sensor's window / dome on a supersonic flight-vehicle. Range-gating of laser pulses measures and separates aerodynamic and atmospheric effects. Separate control algorithms and control loops at different update rates both simplifies the control algorithms and improves overall performance. The use of a MEMS MMA having tip / tilt / piston capabilities as the deformable mirror to provide wavefront correction enhances overall performance. The corrected laser pulses may also be used to actively illuminate a target to provide both active and passive detection.

The present application provides a method, apparatus, device, and storage medium for generating an atmospheric mask file, relating to the field of computer technology. The method includes: generating an atmospheric opacity mask according to the mask of the stratosphere and the mask of the surface atmosphere; wherein, the mask of the stratosphere is configured with color parameters of the stratosphere, and the mask of the surface atmosphere is configured with color parameters of the surface atmosphere; generating an atmospheric mask file according to the mask of the stratosphere, the mask of the troposphere, the mask of the surface atmosphere, and the atmospheric opacity mask; the atmospheric mask file is used for rendering the atmospheric effect of a virtual planet model, wherein, the mask of the troposphere is configured with color parameters of the troposphere. Compared with the prior art, the problem that the atmospheric effect of the planet is very inconsistent with physical laws is avoided.

This invention belongs to the field of geodesy technology, specifically providing a rigorous method, electronic device, and storage medium for atmospheric reduction in geoid determination that takes into account topography and three-dimensional density distribution. The method includes constructing a global three-dimensional atmospheric density model; establishing a precise calculation model of atmospheric effects; and determining the impact of atmospheric reduction on the geoid. This invention proposes a rigorous atmospheric mass adjustment scheme using the generalized Helmert condensation method; it constructs a global three-dimensional atmospheric density model using actual atmospheric data and establishes a precise calculation model of atmospheric effects in conjunction with a global digital elevation model; and it employs a high-precision gravity forward modeling algorithm based on spherical prisms and thin-layer spherical units, taking into account the effects of Earth's curvature, to accurately calculate the direct atmospheric effects, major indirect atmospheric effects, and minor indirect atmospheric effects.

Systems and methods for generating and using statistical models to mitigate atmospheric effects in images are described. In some embodiments, a statistical model may be generated by selecting a vegetation type that grows in continuous healthy canopies; identifying a vegetation reference value that is a stable reflectance property of the vegetation type; in a plurality of images, selecting one or more plots of the vegetation type and obtaining top-of-atmosphere reflectance for the plots; selecting discrete areas near the plots and obtaining top-of-atmosphere reflectance for the discrete areas; obtaining image statistics for the discrete areas; and generating a statistical model based on the acquired data.

Systems, methods, and apparatuses disclosed herein can be implemented as a closed loop feedback system to provide various atmospheric effects. These systems, methods, and apparatuses can regulate these atmospheric effects based on one or more environmental measurements as part of the closed loop feedback system. As part of the closed loop feedback system, these systems, methods, and apparatuses can detect, or measure, one or more physical properties, such as temperature, atmospheric pressure, humidity, wind speed, wind direction, precipitation amount, scent, location, altitude, and / or azimuth to provide some examples. These systems, methods, and apparatuses can compare the one or more physical properties with one or more performance targets of the atmospheric effects and can regulate the atmospheric effects to cause the one or more physical properties to satisfy the one or more performance targets of the atmospheric effects.