79 results about "Gravitational field" patented technology

The invention provides an artificial intelligence submarine topography inversion system and method using gravitational field spatial spectrum data, and the system comprises a gravitational field spatial spectrum calculation module which uses a plurality of band-pass filters to intercept gravity data under different wavelengths; and the gravity-water depth mapping relation establishing module is used for processing gravity and water depth data and establishing a correlation between the gravity and water depth data. A gravitational field spatial spectrum of a sparse ship water depth measuring position is obtained and is paired with water depth data. Dividing the data set into a training set and a test set in proportion; and designing an artificial intelligence model suitable for a regression task for training and predicting the water depth. And the artificial intelligence submarine topography inversion module is used for predicting a water depth value by using the gravitational field spatial spectrum of the trained model input test set, and evaluating a prediction effect through a precision index. The method has the advantages that the characteristics of the gravity data are enriched through the calculation of the gravity field spatial spectrum, and different degrees of influences of gravity on terrain inversion are considered.

The invention relates to the technical field of drilling tool attitude dynamic measurement, and discloses a dynamic measurement method and system for attitude parameters of a rotary steering tool, and the method comprises the steps: obtaining a triaxial angular rate, a triaxial earth gravitational field component and a triaxial earth magnetic field component of the rotary steering tool in real time; determining an attitude angle priori estimated value according to the triaxial angular rate; determining an attitude angle posterior observation value according to the three-axis earth gravitational field component and the three-axis earth magnetic field component; fusing the attitude angle priori estimation value and the attitude angle posteriori observation value through iterative extended Kalman filtering to obtain a posteriori optimal attitude angle estimation result; and calculating attitude parameters according to a posterior optimal attitude angle estimation result. According to the method, adaptive fusion is carried out on the dynamic observed quantities measured by the three-axis gyroscope, the three-axis accelerometer and the three-axis magnetometer through the iterative extended Kalman filter, so that noise interference of the external environment, such as high rotating speed, strong vibration and magnetic anomaly, in the dynamic measurement process is eliminated, and the control and measurement precision of the rotary steering tool is improved.

An unidentified aerial phenomena field disturbance detector includes an accelerometer configured to measure a gravitational field surrounding the unidentified aerial phenomena field disturbance detector; a magnetometer configured to measure a magnetic field surrounding the unidentified aerial phenomena field disturbance detector; a microwave frequency detector configured to measure a specific band of microwave frequencies surrounding the unidentified aerial phenomena field disturbance detector; a controller; and an optical indicator configured to optically communicate information to a user of the unidentified aerial phenomena field disturbance detector. The controller determines a change in the gravitational field surrounding the unidentified aerial phenomena field disturbance detector when generates gravitational field values are outside a predetermined range of non-event field values. The controller controls the optical indicator to optically communicate the determined change in the gravitational field surrounding the unidentified aerial phenomena field disturbance detector.

The invention relates to the field of geophysical exploration, and discloses a large-scale gravity exploration near, middle and far area terrain correction method and system, and the method comprises the steps: obtaining a target Bouguer gravity anomaly total precision requirement and a three-dimensional coordinate of an exploration area gravity measurement point; determining the most adaptive near-region terrain correction model or model combination, and obtaining the parameters of the near-region terrain correction model; reading a near-region terrain correction input table and a gravity measuring point number, and calculating a near-region terrain correction value of each gravity measuring point; dEM data of an exploration area and a neighborhood are obtained through a public way, and the DEM data are converted into normal elevation DEM data with the elevation datum being a geoid through a global high-order earth gravitational field model; according to the converted DEM data and the three-dimensional coordinates of the gravity measuring point, calculating the terrain correction value of the middle and far region of the gravity measuring point; and respectively carrying out precision evaluation on the terrain correction values of the near, middle and far regions. According to the method, the precision of terrain correction of the middle and far regions is guaranteed, and the problems of difficulty in DEM data collection, vacancy and the like are solved.

The invention discloses a gravitational field inversion method considering unsteady noise of a satellite gravity observation value. The gravitational field inversion method comprises the following steps: A, acquiring original observation data of a gravity satellite; b, setting observation value noise as white noise, and constructing a random model considering non-stationary noise; c, performing parameter estimation to obtain a post-test residual error of an observation value; d, estimating the noise auto-covariance and precision factor matrix of the observation value based on the post-test residual error of the observation value; e, repeating the steps C and D for iteration to realize refinement of the gravitational field parameter and observation value random model; and F, evaluating the time-varying gravity field model in the spectral domain. According to the invention, the defects in the prior art can be improved, and the precision and stability of gravitational field inversion are improved.

The invention discloses a pseudo-spectral convex optimization-based method for optimizing a low-thrust trajectory near an asteroid, which comprises the following steps of: establishing a kinetic equation of an orbital motion of a spacecraft near the asteroid, discretizing the kinetic equation through a flipped Radau pseudo-spectral method, establishing a problem of no gravitational field and no anti-collision constraint, and solving by using a convex optimization method to obtain an initial nominal solution; constructing a gravitational field model in the kinetic equation based on a four-mass-point model, and establishing an asteroid nearby anti-collision model; establishing a convex optimization problem of an anti-collision small-thrust trajectory near the asteroid through convex methods such as nominal value replacement and Taylor expansion; establishing a successive solution model, and obtaining an optimal solution through sequence convex optimization; according to the method, a flipped Radau pseudo-spectrum method and convex optimization combined pseudo-spectrum convex optimization method is adopted, the motion low-thrust trajectory optimization of the spacecraft near the asteroid is realized, and the calculation efficiency is improved by using a four-mass-point gravitational field model.

The method is based on a core idea of unifying a field theory and an interference field theory, is devoted to exploration and expansion of an artificial field frontier technology, and covers an artificial field plus quality technology, an artificial field interference technology and an artificial field control space-time technology. In the research process, mutual verification of experiments and theories is paid attention to. Theoretically, internal correlation among Planck mass, electron mass, gravitational force, electric field force, magnetic field force and fine structure constants is deeply analyzed, a conclusion that the gravitational force, the electric field force and the magnetic field force are equal when a substance reaches a light velocity is obtained, and a unique quantum effect is presented. In the aspect of experiments, a simple verification method is adopted, and substances are placed in a positive electrode area and a negative electrode area respectively. Along with the enhancement of the electric field intensity and the action time, the substance mass in the positive electrode area is gradually reduced, and the substance mass in the negative electrode area is correspondingly increased. The phenomenon can be explained as that the space where the positive charges are located has divergence characteristics and the space where the negative charges are located has convergence characteristics, so that the masses of the substances in the positive and negative electrode areas are changed alternately.

The invention discloses a time-varying gravity field model establishment method of a new generation of low-low satellite tracking satellite scheme based on China region enhancement, and belongs to the field of satellite gravitational mechanics. The method refers to a selection index of a global optimal double-track four-satellite formation scheme, determines a plurality of double-track four-satellite formation schemes in a China region, selects an optimal scheme from the double-track four-satellite formation schemes, and establishes a time-varying gravity field model of the new generation of low-low satellite tracking satellite scheme. Different data in the optimal scheme are adopted to independently solve low-order and high-order gravitational potential spherical harmonic coefficients, the negative influence of the time domain aliasing effect on the precision of the time-varying gravity field model is weakened, the error of the high-order gravitational potential spherical harmonic coefficients can be reduced to a certain degree, and finally the Chinese region gravity field model with higher precision is obtained. A final result shows that compared with an independent polar orbit formation, the method not only greatly weakens south-north stripe errors caused by a south-north tracking mode in a Chinese region, but also avoids the problems of gravity signal leakage and the like caused by a post-processing process, and finally obtains a Chinese region gravity field model with smaller errors and larger signal-to-noise ratio.

Devices, systems and methods for magnetic field coupling, as described herein, optimize magnetic coupling between transducers generating and detecting quasistatic magnetic fields by translating the generated and detected magnetic fields into a common frame of reference, such as the Earth's gravitational field. In general, a receiving device has knowledge of the strength and direction of a quasistatic magnetic field generated by a transmitting device, which allows the generated magnetic field to be measured and interpreted by the receiving device in the context of the common frame of reference. Such devices, systems, and methods may use magnetic coupling, for example, for proximity detection and / or for communication between devices. Magnetic coupling may be used for proximity detection, for example, by detecting a magnetic field having a defined magnetic field range and / or by measuring magnetic field strength and / or direction and determining distance and / or location.

The invention relates to a geological fracture recognition method based on multi-source geophysical data and a computer system, and solves the problem of high-precision recognition of tiny fractures and complex fracture zones. The method comprises the following steps: acquiring gravitational field model data, full-tensor gravity gradient data and aeromagnetic data of a target area, and carrying out gridding processing, pole conversion processing and edge expansion preprocessing on the data; performing boundary identification calculation on the preprocessed data by adopting a traditional physical field multi-derivative algorithm to generate a first group of boundary information A; carrying out boundary recognition calculation on the preprocessed data by adopting a gravity and full-tensor gravity gradient combined derivative algorithm (an enhanced total horizontal gradient derivative algorithm, a combined derivative algorithm and a combined oblique derivative algorithm) to generate a second group of boundary information B, and carrying out boundary recognition calculation on the preprocessed data by adopting an image edge detection algorithm to generate a second group of boundary information B; generating a third group of boundary information C; and carrying out weighted fusion on the three groups of boundary information to obtain a final fracture identification result.

Provided are a method and device for driving movement of a target object by a gravitational field generated by a varying electromagnetic field which relate to the technical field of physics. The method includes: generating, by a variable electromagnetic field generator, a time-varying electromagnetic field in space where a target is located; adjusting a frequency, amplitude and phase of the time-varying electromagnetic field so as to generate an effect of a varying magnetic field in the space; and based on the time-varying electromagnetic field, generating an acting force on the target object to drive the target object to move along a predetermined trajectory or direction. The present invention breaks through limitation that the traditional electromagnetic mechanics can only drive metal materials, utilizes the varying characteristics of the electromagnetic field to drive and realize accurate control of movement of all objects comprising a non-magnetic substance and a non-conductive substance.

The invention belongs to the technical field of gravity data noise reduction, discloses a gravity data noise reduction method based on a U-Net network, and provides a U-Net network structure fusing a multi-scale feature fusion module and an attention mechanism aiming at the noise reduction problem of gravity and gravity gradient data. And a physical consistency constraint is introduced in a model training process. A Laplace equation met by the gravitational field potential in geophysics is used as prior information to be fused into a loss function, and a Laplace item is designed. The operation effectively improves the physical interpretability and generalization ability of the noise reduction result of the neural network. Meanwhile, the network structure adopts multi-scale feature fusion and an attention mechanism, and information of different spatial scale features and key spatial positions in complex geological signals is better captured.

The invention belongs to the technical field of physics, and particularly relates to a method for changing an electromagnetic field to generate a vortex gravitational field to enable all substances to move, which comprises the following steps of: enabling a target substance to be positioned in a gap of a soft magnetic iron core, electrifying a coil and driving the target substance through the vortex gravitational field; the coil is wound on the soft magnetic iron core, a section of air gap is reserved in the soft magnetic iron core, a vortex gravitational field is generated at the air gap after the coil is powered on, various substances at the air gap are driven to move under the action of the vortex gravitational field, and the device is not only suitable for fluid conveying, but also used for achieving rotation of metal or non-metal objects, wide in application range and high in practicability. And the design and manufacturing processes of corresponding equipment are simplified.

The invention discloses an elevation datum plane construction method and system based on a low-order cosine correction Stokes kernel function, a medium and a product, and relates to the technical field of physical geodetic survey. The method comprises the following steps: calculating by utilizing an earth gravitational field model, topographic data and a high-frequency topographic influence combined algorithm to obtain model data, direct influence of topographic compression on ground gravity anomaly and indirect influence of topographic compression on an elevation datum plane; determining an empirical value and a test value of a correction order of the low-order cosine correction Stokes kernel function based on the accumulative error of the model gravity anomaly and the test frequency bandwidth; calculating an empirical elevation datum plane and a test elevation datum plane based on the empirical value and the test value of the correction order by adopting a low-order cosine correction Stokes kernel function; and determining a final elevation datum based on the empirical elevation datum and the test elevation datum. The construction precision of the elevation datum plane can be improved.

The invention relates to the technical field of geophysical exploration, in particular to an along-curved-surface gravitational field inversion method and device based on a target layer, and the method comprises the steps: taking a target layer curved surface of a target region as a constraint, peeling off a shallow-layer residual gravity anomaly field in a Bouguer gravity anomaly field of the target region layer by layer, and subtracting a region gravity anomaly field below the target layer to obtain a gravity anomaly field; obtaining a residual gravity anomaly field of the target layer curved surface; and in combination with the fluctuation degree of the curved surface of the target layer, performing inversion on the residual gravity anomaly field of the curved surface of the target layer by using deconvolution to obtain a density superposition field of the curved surface of the target layer. According to the method, a new along-curved-surface gravity field inversion method is established, depth parameters of a target layer curved surface are considered during inversion calculation, interference signal influences are eliminated, a density field signal along the curved surface is obtained, a density superposition field of the target layer curved surface is obtained, and an oil-gas-water enrichment area is depicted for follow-up density change interface prediction and oil-gas-water enrichment area depicting. And a basis is provided for providing reference suggestions for well position deployment and production regulation and control.

The method is derived from deep exploration and development of a unified field theory and an interference field theory, and deep expansion and innovative research are performed on an artificial field plus quality technology, an artificial field interference technology and an artificial field control space-time technology on the basis of the deep exploration and development of the unified field theory and the interference field theory. The core of the invention lies in that an innovative gravitational field emission mechanism is constructed by applying a gravitational field generator. Specifically, the emitter is used for releasing the gravitational field, three-dimensional and directional release can be achieved, and in the process of directional emission of the gravitational field, a shielding device can be designed and applied according to a specific directional range so as to achieve accurate control over emission of the gravitational field. The emitter is ingeniously connected with a high-voltage positive electrode of the gravitational field generator, the shielding device is connected with a high-voltage negative electrode of the gravitational field generator, and the design ensures cooperative work of emission and shielding of the gravitational field. It is worth mentioning that the device is developed on the basis of the gravitational field generator technology in the applied patent'an accelerated gravitational field generator (the application number is 2025106177249) ', and the device capable of emitting the gravitational field efficiently and directionally is designed.

A communication quantization distributed spacecraft formation control method comprises the following steps: establishing a spacecraft dynamic model near an asteroid, modeling a gravitational field near the asteroid by adopting a polyhedron method, constructing a spacecraft formation near a balance point in the gravitational field, and establishing a relative kinematic model of the spacecraft formation; a logarithm quantizer is constructed to quantify state variables transmitted between spacecrafts, a distributed spacecraft formation controller based on communication quantization is constructed, and finally, the quantized state variables are input into the controller to obtain a spacecraft formation deployment strategy. According to the method, the formation control strategy of the spacecrafts near the asteroid is improved by quantifying the communication information, and the distributed spacecraft formation controller based on communication quantification is constructed, so that the problem that the formation communication frequency and the data transmission rate of the existing formation control method near the asteroid are too harsh is solved.

To solve the problem that conventional measuring instruments cannot measure gravitational field density.SOLUTION: Double mass discs are arranged such that an optical path of a laser gyro passes through a gap between the discs, and they are acceleratingly rotated in order to generate gravitational field variation in the optical path. The gravitational field variation is detected using an interferometer of the same laser gyro, thereby measuring density of the gravitational field.SELECTED DRAWING: Figure 2

The invention provides an island small landslide early warning method based on gravity sensing and a related device. The method comprises the following steps: respectively collecting gravity data and environment interference data of a target island in real time by using a gravity sensing sensor array and an environment sensing sensor; performing interference correction on the gravity data based on the environment interference data to obtain corrected gravity data; mapping the corrected gravity data into a three-dimensional coordinate system of the target island, and generating a gravity field space distribution matrix; based on the gravitational field spatial distribution matrix, marking an area with gravity anomaly in the target island as a potential anomaly area; and performing prediction based on gravity data corresponding to the potential abnormal area in the corrected gravity data by using the trained landslide early warning model, and performing small landslide early warning on the target island when determining that the predicted landslide occurrence probability is greater than a preset early warning threshold. According to the invention, high-sensitivity and extreme-weather-resistant real-time monitoring and accurate early warning of small landslides of islands and reefs can be realized.

The method is developed on the basis of a unified field theory and an interference field theory, and is deep exploration and expansion of an artificial field plus quality technology, an artificial field interference technology and an artificial field control space-time technology. The core innovation is that an anti-gravitational field is generated by utilizing a gravitational field generator, and the anti-gravitational field is used as a repulsive force field to realize a suspension effect. The technology provides a brand new solution besides ultrasonic suspension, magnetic suspension, superconductor suspension, pneumatic suspension, optical suspension, particle beam suspension and electrostatic suspension for the field of suspension. Compared with electrostatic suspension, the method has obvious difference. The electrostatic suspension generally depends on an electric field generated by a positive electrode and a negative electrode, the negative electrode does not need to be arranged, the positive electrode area can effectively shield ionic wind through plastic grounding, the problem of charge interference possibly occurring in traditional electrostatic suspension is avoided, and the uniqueness of the technical principle and the application mode is highlighted. The invention is developed on the basis of a gravitational field generator in an accelerated gravitational field generator (application number: 2025106177249), and aims to design an efficient and stable repulsion field suspension device to provide a new thought and direction for further development of a suspension technology.

The invention discloses a multifunctional gravitational field generator. The method is developed on the basis of a unified field theory and an interference field theory, and aims to deeply explore and expand an artificial field and quality technology (the application number is 2025101271992), an artificial field interference technology and an artificial field control space-time technology. The core innovation is that a plurality of gravitational field generators are applied, and scientific layout is carried out in a three-dimensional space through positive and negative gravitational fields. Specifically, in view of the fact that the anion acceleration cabin mainly acts on light, the anion acceleration cabin is arranged at the top position; the cation acceleration cabin is arranged below the top and has key functions of scanning, light guiding, moving and the like. According to the design, an original device in an artificial field and quality technology is optimized and upgraded, and a gravitational field generation system capable of achieving three-dimensional comprehensive application is constructed.

The invention discloses a gravitational field adaptation degree calculation method based on course optimization. The gravitational field adaptation degree calculation method comprises the following steps: converting a gravity anomaly database into a gravity anomaly grayscale image; an improved Sobel operator template is adopted to carry out convolution on the gravity anomaly grayscale image; convolution factors in different directions in the improved Sobel operator template are determined according to the course; constructing a gray level co-occurrence matrix of each sample matching area according to a convolution result; calculating characteristic parameters according to the gray level co-occurrence matrix, and carrying out normalization processing on the characteristic parameters; and calculating the characteristic parameters of different sample matching areas through a principal component analysis method to obtain the fitness of each sample matching area. According to the method, the influence of the course is considered when the gravitational field adaptation degree is calculated, and the precision and accuracy of gravity matching navigation are improved.

The present invention discloses a small-thrust trajectory optimization method near an asteroid based on pseudospectral convex optimization, including: establishing the dynamic equation of the spacecraft's orbital motion near the asteroid, discretizing the dynamic equation by the flipped Radau pseudospectral method, establishing a problem of no-gravitational-field and no-collision constraint, and using a convex optimization method to solve and obtain an initial nominal solution; constructing a gravitational field model in the dynamic equation based on a four-particle model, and establishing a collision avoidance model near the asteroid; establishing a convex optimization problem of small-thrust trajectory for collision avoidance near the asteroid through convexification methods such as nominal value substitution and Taylor expansion; establishing a successive solution model, and obtaining the optimal solution through sequential convex optimization; the present invention adopts a pseudospectral convex optimization method combining the flipped Radau pseudospectral method and convex optimization, realizes the optimization of the small-thrust trajectory of the spacecraft's motion near the asteroid, and improves the calculation efficiency by using the four-particle gravitational field model.

The invention provides a battle system double-encircling detection method and system, and the method comprises the steps: carrying out the emission in a form of a combination of a polar orbit encircling device and a medium-low inclination angle encircling device, jointly completing the flight from the earth to a battle transfer orbit, carrying out the selective separation of the two encircling devices before approaching a battle, carrying out the capturing, braking and ignition, and enabling the two encircling devices to enter different orbits, the two surrounding devices are each provided with a magnetic field measurement device, an inter-device communication device and a device-ground communication device, the two surrounding devices carry out star magnetic field and gravitational field measurement respectively, a machine is selected to carry out star atmosphere occultation and plasma ring measurement, and when resources are sufficient, the middle-low dip angle surrounding device can adjust a track to carry out ring wood and satellite detection. The star system double-surrounding detection system comprises the links of transfer orbit design, assembly resource analysis, star system inner orbit design, resource analysis, load addition and distribution demonstration, environment-wood-satellite extended task analysis and the like. According to the invention, two surrounding devices can be launched at a time to obtain the star data, the resource utilization rate and the result output are improved, and the engineering value is high.

A method for direct measurement and profiling of electromagnetic energy from a star at a known distance from the observer entails collecting photons from the star with a camera through a telescope or lens of a given aperture area up to the known full well depth of the camera's image sensor, determining the time needed to reach the sensor's full well depth, using that collection time and the sensor's bandgap and sensitivity characteristics at full well depth to calculate the energy received per second through the aperture area, determining the number of aperture areas needed to cover the surface area of a sphere with a radius equal to the star's distance, and determining the total energy output of the star by multiplying the determined electromagnetic energy received through the aperture area by the number of apertures needed.

The present disclosure relates to systems and methods of determining a wellbore position in a subterranean formation by using gravity sensors to detect a gravity anomaly related to a presence of the wellbore, contents within the wellbore, and or fluid flowing through an interface of the wellbore. A model of the subterranean formation predicts a gravity profile, including the gravity anomaly, and the model may be constrained with a depth of the gravity anomaly as calculated with at least one of a known dimension or a known gravitational field change related to the gravity anomaly. The wellbore position is determined within the model by changing model input data until the gravity profile converges with the gravity anomaly.

The present invention discloses a satellite atmospheric perturbation measurement method and device. The method includes: obtaining the satellite coordinates, satellite speed and current time of the satellite based on Beidou positioning and timing functions; obtaining the satellite measurement attitude information and solar sailboard rotation angle information of the satellite; determining the total perturbation of the satellite in the inertial coordinate system according to the satellite coordinates, satellite speed and current time; determining the non-spherical gravitational perturbation corresponding to the satellite according to the satellite position and the third-party gravitational field model; determining the daily gravitational perturbation and lunar gravitational perturbation corresponding to the satellite according to the solar coordinates and lunar coordinates at the current time; determining the solar light pressure perturbation corresponding to the satellite according to the current time, satellite coordinates, solar coordinates, satellite measurement attitude information and solar sailboard rotation angle information; determining the satellite atmospheric perturbation of the satellite according to the total perturbation, non-spherical gravitational perturbation, daily gravitational perturbation, lunar gravitational perturbation and solar light pressure perturbation. The present invention can improve the calculation accuracy of the atmospheric perturbation.

The invention provides a tetrahedron gravity forward modeling method, device and system and a storage medium, and relates to the technical field of geophysical survey, and the method comprises the steps: obtaining a field source body model and format data of the field source body model; subdividing the field source body model according to a preset mode to obtain a plurality of tetrahedrons; the preset mode corresponds to the format data; obtaining coordinate data of the observation points, and performing parallel processing on each tetrahedron based on an improved Gauss cross section method according to the coordinate data to obtain a temporary gravity field generated by each tetrahedron at the observation points; and obtaining a gravity field generated by the field source body at the observation point according to all the temporary gravity fields. Through the advanced processing method, the gravitational field distribution of the complex geologic body can be simulated more accurately. Meanwhile, the parallel processing technology is utilized, the calculation time is remarkably shortened, the effect is particularly obvious when large-scale data are processed, and the gravity field forward modeling precision and the calculation efficiency are improved.

A kind of relative navigation reference deviation calibration method of star and pulsar information fusion is disclosed, which comprises the following steps: configuring a star angular distance measuring sensor and an X-ray detector on a spacecraft; observing stars by the star angular distance measuring sensor to extract navigation information contained in two kinds of relativistic effects, i.e., star aberration caused by the movement of the spacecraft and light deflection caused by celestial gravitational field; observing pulsars by the X-ray detector to obtain pulse arrival time difference observations; combining spacecraft and earth orbit dynamics model to predict the state; processing star angular distance and pulse arrival time difference observations by an extended Kalman filter to correct the state prediction value, and obtaining the estimation of the spacecraft position and velocity, the geocenter position and velocity, and the sensor system error parameters, so as to realize the calibration of two kinds of reference deviations, i.e., earth ephemeris error and sensor system error. The present application provides a new way to improve the performance of relativistic navigation system.