34 results about "Horizon" patented technology

The invention provides a geological envelope body automatic generation method. The method comprises the following steps: defining a target work area; performing sparse horizon picking of a top interface and a bottom interface on the geological envelope in the defined target work area to determine a top interface horizon, a bottom interface horizon and corresponding top interface and bottom interface data; based on the grid positions corresponding to all the pickup point positions of the top interface horizon and the bottom interface horizon, according to the range of the top interface data and the range of the bottom interface data, boundary lines of the geological envelope body at the top interface and the bottom interface in the target work area are determined; determining horizon depth values in all grid points of the top interface and the bottom interface; constructing a top interface boundary constraint and a bottom interface boundary constraint according to the horizon depth value and based on boundary lines of the geological envelope body at the top interface and the bottom interface to determine an intersection point between the top interface and the bottom interface of the envelope body so as to optimize the boundary lines of the geological envelope body at the top interface and the bottom interface; and generating a three-dimensional visualization model of the geological envelope based on the optimized boundary line.

An apparatus for displaying the passage of time as we experience the movement of the sun. Civil time, solar time, sunrise, solar noon, sunset, the date, equinoxes, solstices, and seasons are represented in a single, integrated display. The display includes a representation of the sun revolving about a center once per day, rising and setting relative to a representation of the horizon, with solar noon, rather than civil-time noon, continuously at the top of the display. The apparatus accounts for and is adjustable to latitude and longitude. The apparatus accounts for all naturally perceptible motions of the earth with respect to the sun, including the variation in the length of the solar day, whose cumulative difference with civil time is expressed as the equation of time.

The invention relates to a waveguide and scattering mixed channel multipath time delay calculation method in different waveguide environments, which comprises the following steps of: determining the propagation path length of electric waves in an evaporation waveguide channel according to the height of an evaporation waveguide and the heights of transmitting and receiving antennas of a maritime beyond visual range communication system by utilizing a ray tracing model; calculating the propagation path length of the electric wave in the troposphere scattering channel; the multi-path time delay of the evaporation waveguide and troposphere scattering mixed channel under different elevation angles of the transmitting and receiving antennas is obtained by utilizing the height of the evaporation waveguide, the heights of the transmitting and receiving antennas of the maritime beyond-the-horizon communication system, the propagation path length of electric waves in the evaporation waveguide and troposphere scattering channel and the propagation speed of the electric waves. According to the method, the evaporation waveguide height, the transmitting antenna height and the communication distance are substituted into the ray tracing model, the multipath time delay of the evaporation waveguide and the troposphere scattering mixed channel is calculated, and the multipath time delay of the evaporation waveguide and the troposphere scattering mixed channel under the offshore beyond-visual-range condition can be rapidly calculated.

The invention discloses a horizon astronomical telescope pointing error correction method based on machine learning. The method comprises the following steps: recording fixed star data; constructing a telescope rack pointing model, calculating a model coefficient, performing coarse correction on a new observation target, accumulating observation data, and preprocessing the observation data; training the preprocessed training set data by using an XGBoost regression model, predicting condition parameters of a new observation target by using a trained error prediction model to obtain normalized azimuth angle deviation and elevation angle deviation predicted values of the new observation target, and carrying out reverse normalization processing on the predicted values to obtain an actual rack deviation angle; and superposing the rough correction deviation angle and the actual rack deviation angle to serve as a final offset to be injected into a telescope rack tracking program so as to realize correction of a pointing error. According to the invention, the pointing error can be within a very small range, and the pointing precision of the horizon telescope can be effectively improved.

The invention relates to the technical field of astronomical teaching instruments, and discloses a teaching science popularization horizontal type celestial globe which comprises a base and symmetrically arranged arc-shaped supports, the tops of the arc-shaped supports are fixedly connected with a horizontal ring, the inner sides of the arc-shaped supports are rotatably provided with a meridian circle, the outer side of the base is provided with a horizontal adjusting assembly, and the horizontal adjusting assembly is fixedly connected with the arc-shaped supports. An auxiliary assembly is arranged at the top of the mounting ring, the levelness adjusting assembly comprises vertical grooves symmetrically formed in the bottom of the base and piston blocks slidably mounted in the vertical grooves, an upper ring body is fixedly connected to the top of the base, and adjusting rods are symmetrically mounted on the outer side of the upper ring body in a threaded mode. The supporting rod and the horizon ring can be adjusted to a horizontal angle according to the liquid bubble display of the liquid bubble level meter, so that the base and the placing surface are stably adsorbed and compressed, the levelness of the celestial globe during observation is conveniently kept, and the placing stability and the observation precision of the device main body are kept during subsequent rotating observation.

The invention relates to the technical field of geophysical exploration, and particularly discloses a weight control volume generation method and device based on horizon data, and the method comprises the steps: determining a to-be-updated region based on the analysis of an existing seismic section, and delineating an updating target; based on the update target, performing top-bottom interface interpretation to obtain top-bottom layer position information; resampling the top and bottom layer position information to obtain a chromatography grid; carrying out interpolation processing on the chromatography grid by adopting two-dimensional spline interpolation to obtain a speed model grid; and establishing a three-dimensional weight control body by utilizing horizon data under the speed model grid through weight control. The method comprises the following steps: firstly, picking up horizon information of a top-bottom interface of a target area, taking the horizon information as a data basis, carrying out resampling and local two-dimensional spline interpolation on the horizon to obtain a sampling horizon of a target grid, taking the sampled horizon as the top-bottom interface, and establishing an expected weight control body through weight control to realize real local updating.

Systems and methods for photography of a spacecraft during space flight are provided. An autonomous deployable camera (ADC) is configured to capture images and video of a portion of a rocket, such as a crew capsule, as it flies in space with the Earth's horizon in the background and astronauts within the crew capsule visible and recognizable through windows of the crew capsule. The ADC, being reusable, is configured to land on the ground independent of landings or flight trajectories of the crew capsule or other parts of a rocket. The ADC includes a parachute to slow the descent of the ADC and tracking hardware to allow the ADC to be relatively easily recovered on the ground. After recovery, images are downloadable from the ADC.

A solar apparent motion demonstration instrument relates to a teaching demonstration appliance. The instrument can visually demonstrate the sun apparent motion trail and the sunrise and sunset moments on the earth at any latitude and any day. The instrument is composed of a support, a celestial sphere shell, a horizon circle hemisphere shell and a horizon observation time measuring ring. The horizon ring hemisphere shell is arranged in the celestial sphere shell, and the celestial sphere shell and the observation horizon time measuring ring are arranged on the bracket; the celestial sphere shell is a transparent hollow sphere; the horizon ring hemisphere shell is a transparent hollow hemisphere, and the large circular surface of the horizon ring hemisphere shell represents the horizon ring; a small amount of water is injected into the celestial sphere shell, and the horizon ring hemisphere shell is placed into the celestial sphere shell, so that the horizon ring hemisphere shell floats; the celestial sphere shell is connected with the upper end point and the lower end point of the support round frame through rotating shafts. And the observation ground time measuring rings are fixed on two sides of the support circular frame. The vertical rotation instrument can change the geographic latitude of an observer, and the transverse rotation instrument can simulate the weekly-day apparent motion of the sun.

The disclosure includes an apparatus including a display for visually representing solar time and civil time simultaneously. In some embodiments, the apparatus includes a representation of a horizon extending across the display, an icon of the sun corresponding to a solar time by its position relative to the representation of the horizon and to a top portion of the display, the icon of the sun configured to revolve once per solar day about a center portion of the display, and a plurality of hour indications corresponding to civil-time hours of a day, the plurality of hour indications set circumferentially around the display. The angular position of the plurality of hour indications may be rotatable, thereby enabling the civil time of solar noon to appear at the top portion of the display.

The invention discloses a ground surface settlement measuring device and a measuring method, and relates to the technical field of measurement, the ground surface settlement measuring device is characterized in that a reference rod is arranged in a reference area, a first measuring rod is arranged in an observation area, the reference rod and the first measuring rod are arranged perpendicular to the horizon, and the reference rod and the first measuring rod are connected through a measuring rope in a straightened state; the sensor assembly is arranged on the measuring rope, and the measuring rope is an elastic rope; and the sensor assembly is used for detecting an included angle between the measuring rope and the horizon so as to determine relative ground surface settlement data of the position of the first measuring rod relative to the position of the reference rod. Compared with ground surface settlement data measured through a static leveling instrument in the prior art, a measuring rod does not need to be installed in a high-precision mode, and the accuracy and efficiency of relative ground surface settlement data measurement can be improved.

The application discloses a method for finely depicting a shallow discontinuous channel based on seismic attributes, and relates to the technical field of oil and natural gas exploration and development. The method is based on amplitude attribute means and combined with a seismic section technology to open a time window in the time domain or the depth domain of a research object. On the basis of seismic horizon interpretation, the method controls two horizons of top and bottom surfaces, splits in the vertical direction along the horizon direction, splits a certain number of sections according to a certain proportion between the two horizons, and sequentially superimposes channel features recognized by amplitude attributes on a single section on a plane graph in sequence. Thus, the method achieves the technical method for identifying a delta front underwater channel with a mud-sand interbedding and mud-bundled sandstone combination in a shallow layer.

The application discloses a sky wave over-the-horizon radar clutter suppression method based on low rank group sparse representation, comprising the following steps: S1, according to the characteristic analysis of echo signals, the regularization constraint is carried out on each component of the echo signals, and the equality constraint is carried out through a discrete Fourier matrix, so as to construct a target function; S2, the equality constraint of the target function is eliminated through an augmented Lagrange function; S3, the regularization parameter of the target function is initialized and set, and the iteration convergence condition of an algorithm is set; S4, for an unconstrained convex optimization problem, all variables to be solved are updated alternately until the iteration converges, and the result after the clutter component is eliminated is obtained, so that the clutter suppression is realized. The application distinguishes each component of the echo signals by using the low rank, column sparsity and group sparsity, and carries out the constraint by using the nuclear norm, the norm, the group sparse regularization term and the Frobenius norm, and the solution is carried out through a convex optimization algorithm framework, so that the ground sea clutter can be effectively suppressed, and the target signal-to-noise ratio is improved.

The application discloses a kind of synchronous satellite radar track initiation methods based on sky-wave gate correction, belong to the technical field of target tracking in radar data processing.This application is aimed at the problem of a large number of false tracks in track initiation in the target tracking of synchronous satellite radar.It includes establishing north-east sky right-angle coordinate system with sky-wave over-the-horizon radar receiving station as origin, determining the coordinates of synchronous satellite radar transmitting station, synchronous satellite radar receiving station and all measurement points in track initiation period;Determining the track tracking information of sky-wave over-the-horizon radar;According to the track information and state error of sky-wave over-the-horizon radar, establish the tracking gate of sky-wave over-the-horizon radar;Then, based on the traditional logical initiation method, establish the annular initiation gate of synchronous satellite radar;Finally, take the intersection of the annular gate of synchronous satellite radar and the tracking gate of sky-wave over-the-horizon radar as the correction gate of synchronous satellite radar, and perform track initiation, i.e.The starting track of synchronous satellite radar can be obtained.The application is suitable for track initiation in target tracking.

The application discloses a kind of SP-URNet-based offshore non-uniform troposphere atmospheric waveguide propagation loss space-time prediction method, comprising the following steps: step 1, atmospheric waveguide atmospheric correction refractive index M parameterization calculation and waveguide propagation loss image data calculation: step 2, three-dimensional convolution automatic encoder space feature extraction modeling: step 3, the U-TCN module of time convolution network TCN composition models the time feature of over-the-horizon propagation loss: step 4, three-dimensional convolution automatic decoder time and space feature integration: step 5, SP-URNet prediction network model building.The algorithm disclosed in the application overcomes the lack that the prior art cannot satisfy the space-time prediction and nonlinear prediction of offshore non-uniform troposphere atmospheric waveguide propagation loss data.

Systems and methods for photography of a spacecraft during space flight are provided. An autonomous deployable camera (ADC) is configured to capture images and video of a portion of a rocket, such as a crew capsule, as it flies in space with the Earth's horizon in the background and astronauts within the crew capsule visible and recognizable through windows of the crew capsule. The ADC, being reusable, is configured to land on the ground independent of landings or flight trajectories of the crew capsule or other parts of a rocket. The ADC includes a parachute to slow the descent of the ADC and tracking hardware to allow the ADC to be relatively easily recovered on the ground. After recovery, images are downloadable from the ADC.

The invention provides a method for calculating the connecting line height from the lowest scattering point of a troposphere to a receiving and transmitting antenna. The connecting line height from the lowest scattering point of the troposphere to the receiving and transmitting antenna is calculated. The spherical distance between the transmitting antenna and the receiving antenna is calculated; the prime unitary circle curvature radius of the earth reference ellipsoid at the transmitting antenna latitude and the receiving antenna latitude is calculated; the linear distance between the transmitting end and the receiving end is calculated; and the connecting line height from the lowest troposphere scattering point to the receiving antenna and the transmitting antenna is calculated. On the basis of the distance between the transmitting antenna and the receiving antenna and the included angle between the receiving antenna and the transmitting antenna, a mathematical model of the height between the lowest troposphere scattering point and the connecting line between the receiving antenna and the transmitting antenna is provided, compared with a method of an ITU-R.P.617 proposal, the troposphere scattering transmission requirement is better met, and in troposphere scattering loss prediction, the troposphere scattering loss prediction accuracy is improved. And the calculation accuracy of parameters such as a scatterer dependency coefficient, elevation angle offset loss and antenna low-frame loss can be improved.

The invention relates to the technical field of geophysical exploration, and discloses a ground penetrating radar horizon tracking method and system based on dynamic time warping. The method comprises the following steps: preprocessing radar data; picking up a layer position seed point; based on the seed points, determining horizon positions in adjacent search windows by using a dynamic time warping algorithm, and synchronously introducing a continuity constraint mechanism to limit horizon mutation; performing anomaly detection, removal and smoothing processing on a tracking result; and finally, the structured horizon information is exported. The system comprises corresponding function modules. According to the method, dynamic time warping and physical continuity constraint are combined, and the stability, accuracy and reliability of horizon tracking under noise interference, discontinuous horizon and complex geological conditions are effectively improved.

The invention provides an indoor illumination control method based on a sky model, which comprises the following steps that: an illumination mode is controlled, so that the fitting error between the relative illumination distribution of a ceiling surface and the target relative brightness distribution is within 5%, and the target relative brightness distribution is that the sky model reflecting the sky relative brightness distribution is placed indoors; recording an included angle beta formed by a connecting line from the position of the human eyes to the middle point A of the short edge of the ceiling surface and the horizon of the sky model; determining a point on the sky model, the included angle between the connecting line of the point D and the horizon being beta, as a mapping illuminance starting point B; dividing an illumination brightness arc line from the point B to the zenith point O of the sky model into N equal parts, mapping the illumination relative brightness distribution of the sky model to the ceiling surface according to the mode that the illumination brightness of the equal parts corresponds to the illumination brightness of the equal parts, and then rotating for a circle by taking the point C as the center to obtain the relative illumination distribution. According to the invention, the significance, authenticity and stability of indoor reproduction of the outdoor light environment from the visual angle of people can be ensured, and indoor reproduction of the large-area and ultrahigh-space outdoor light environment is realized.

This invention provides an intelligent identification system and method for navigation environments during nighttime ship navigation. Addressing the problems of poor infrared image quality, large target scale differences, and difficulty in locating extremely small targets during nighttime navigation, this invention first employs a brightness-noise joint adaptive and structure-constrained wavelet enhancement method to preprocess images, brightening dark areas and suppressing clutter. Second, it constructs a horizon-constrained scale decoupling feature fusion module, based on horizon response weighted features, and decouples these features into branches for large and small targets for adaptive differential fusion. Finally, it designs a point-box collaborative detection head, using point detection for distant, weak targets and box detection for nearby, large targets, fusing the detection results and identifying navigation environment risks. The beneficial effects of this invention are: effectively overcoming the rigidity of scale fusion and unstable positioning defects of traditional methods, and significantly improving the robustness of target detection and intelligent environmental recognition capabilities in complex nighttime navigation scenarios.

Embodiments of the present application disclose a thin sand body reservoir position determination method and device, electronic equipment and a storage medium. The method comprises: determining at least two super-short-term cycles of a to-be-explored area and horizon data of the at least two super-short-term cycles; determining a paleo-channel plane distribution map of the to-be-explored area according to the horizon data of the super-short-term cycles and a paleo-current direction; determining a thin sand body prediction plane distribution map of the to-be-explored area according to the horizon data of the at least two super-short-term cycles by using a seismic inversion technique; and superimposing the paleo-channel plane distribution map and the thin sand body prediction plane distribution map to determine the thin sand body reservoir position. The technical solution of the embodiments of the present application determines the horizon data, the paleo-channel plane distribution map and the thin sand body prediction plane distribution map in turn through the idea of step-by-step constraint, and finally obtains the thin sand body reservoir position. The solution reduces the multiple solutions of seismic prediction and improves the accuracy of determining the thin sand body reservoir position.

The application discloses a kind of multi-station multi-seat software remote synchronization method and system, belong to software automation operation technology field.The method of the application includes:10) in control end seat, the communication address of all controlled end seat is configured, and group is divided, and controlled end seat host table is formed;20) through standard SSH protocol configuration password-free login authentication information table, including the password-free login authentication information of all controlled end seat;30) in control end seat, enable automation operation tool, select a controlled end seat group, implement remote synchronization scenario.The application can realize the remote update synchronization of sky-wave over-the-horizon radar multi-station multi-seat software, effectively improve the update synchronization efficiency of sky-wave over-the-horizon radar multi-station multi-seat software, and implementation process is simple, and good universality.

The present invention relates to an electronic astral sextant, which can use stars, the sun, the moon, and planets to operate. The sextant is a device designed to measure the height of a star above the horizon. With the help of astronomical tables, the latitude and longitude of the observation location can be deduced.

The application relates to a sky-wave over-the-horizon radar coordinate registration method based on a reference source auxiliary, which comprises the following steps: firstly, acquiring prior information of ionospheric activity parameters in an estimated ionospheric region and reference source data; secondly, constructing a posterior distribution of the ionospheric activity parameters in the estimated ionospheric region under a Bayesian framework based on the prior information of the ionospheric activity parameters in the estimated ionospheric region and the reference source data; thirdly, solving a moment estimation value of the posterior distribution of the ionospheric activity parameters in the estimated ionospheric region based on a Markov chain, Gibbs sampling and importance sampling; fourthly, substituting the moment estimation value of the posterior distribution of the ionospheric activity parameters in the estimated ionospheric region into an international reference ionospheric model to obtain a posterior ionosphere; and finally, calculating an electromagnetic wave propagation path in the posterior ionosphere by using a three-dimensional ray tracing method to obtain a coordinate registration result of a to-be-positioned target. The application can significantly improve the coordinate registration precision and the sky-wave over-the-horizon radar target positioning precision.

The invention relates to a sky wave over-the-horizon radar high-speed parallel coordinate registration method based on reference source assistance, and the method comprises the steps: constructing and estimating the posterior distribution of ionosphere activity parameters under a Bayesian framework based on the prior information of the ionosphere activity parameters and reference source data; secondly, according to posterior distribution of the ionosphere activity parameters, based on a near-end gradient descent method and an average field variational method, solving estimated values of the ionosphere activity parameters of all dimensions in parallel, and then substituting the estimated values of the ionosphere activity parameters of all dimensions into an international reference ionosphere model to obtain a posterior ionosphere; and finally, calculating an electromagnetic wave propagation path in the posterior ionosphere by using a three-dimensional ray tracing method to obtain a coordinate registration result of the to-be-positioned target. According to the method, timeliness can be improved while the accuracy of sky wave radar target positioning is ensured.

The invention provides an integrated navigation method based on skyline positioning and IMU prior fusion, which belongs to the technical field of navigation, and specifically comprises the following steps: monitoring a GNSS (Global Navigation Satellite System) signal; constructing a priori search space matched with the skyline by using the pose information obtained by the IMU through short-time calculation after the GNSS fails, and generating a priori space constraint according to the current position and an error model; the method comprises the following steps: acquiring a panoramic image of a surrounding environment of a vehicle, processing the panoramic image to extract an actual skyline, matching the actual skyline with a preset digital elevation model (DEM) skyline library under a priori space constraint, and outputting a plurality of candidate positions, selecting an optimal visual positioning result and confidence thereof from the plurality of candidate positions based on the trajectory consistency score; and taking the optimal visual positioning result as pseudo observation information, and using the confidence coefficient of the pseudo observation information to adaptively adjust an observation noise covariance matrix of the integrated navigation filter. According to the scheme of the invention, the navigation precision and robustness are improved.

The present application provides a kind of geological envelope automatic generation method, comprising: defining target work area;The top interface and the bottom interface of the geological envelope in the defined target work area are sparse horizon picking to determine the horizon of top interface, bottom interface and corresponding top interface and bottom interface data;Based on the grid position corresponding to all picking points of top interface horizon and bottom interface horizon, according to the range of top interface data and bottom interface data, the boundary line of geological envelope at top interface and bottom interface in target work area is determined;Determine the horizon depth value in all grid points of top interface and bottom interface;According to horizon depth value, based on the boundary line of geological envelope at top interface and bottom interface, top interface boundary constraint and bottom interface boundary constraint are constructed to determine the intersection between top interface and bottom interface of envelope, to optimize the boundary line of geological envelope at top interface and bottom interface;Based on the optimized boundary line, generate geological envelope three-dimensional visualization model.

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.

An apparatus may include a display for visually representing solar time and civil time simultaneously. In some embodiments, the apparatus includes a representation of a horizon extending across the display, an icon of the sun corresponding to a solar time by its position relative to the representation of the horizon and to a top portion of the display, the icon of the sun configured to revolve once per solar day about a center portion of the display, and a plurality of hour indications corresponding to civil-time hours of a day, the plurality of hour indications set circumferentially around the display. The angular position of the plurality of hour indications may be rotatable, thereby enabling the civil time of solar noon to appear at the top portion of the display.

Using images acquired by a visible light camera, it becomes possible to detect the position of the horizon even at night based on the identification results of other ships' lights. [Solution] The navigation support device for assisting the navigation of a ship includes a light detection unit. The light detection unit detects lights based on color information contained in an image acquired by a visible light camera.

[Problem] A position of a horizon can be detected based on an identification result of a light of an other ship even in the nighttime by using an image acquired by a visible light camera. [Solution] A navigation support device that supports navigation of a ship includes a light detector. The light detector detects a light based on color information included in an image acquired by the visible light camera.