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42 results about "Gravitational field" patented technology

In physics, a gravitational field is a model used to explain the influence that a massive body extends into the space around itself, producing a force on another massive body. Thus, a gravitational field is used to explain gravitational phenomena, and is measured in newtons per kilogram (N/kg). In its original concept, gravity was a force between point masses. Following Isaac Newton, Pierre-Simon Laplace attempted to model gravity as some kind of radiation field or fluid, and since the 19th century explanations for gravity have usually been taught in terms of a field model, rather than a point attraction.

Unidentified aerial phenomena field disturbance detector

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.
Owner:DIPOALA WILLIAM SAMUEL

Method for converting variable electromagnetic field into gravitational field

InactiveCN120472753AEducational modelsFine structureElectrical field strength
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.
Owner:高昆

Geological fracture identification method based on multi-source geophysical data and computer system

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.
Owner:HUANGGANG NORMAL UNIV

Method and device for driving movement of target object by gravitational field generated by varying electromagnetic field

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.
Owner:ZHANG XIANG QIAN TECHNOLOGIES INC

Gravity and gravity gradient data noise reduction method and system based on U-Net network

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.
Owner:NAVAL UNIV OF ENG PLA

Emitter based on acceleration type gravitational field generator

InactiveCN120352943AGravitational wave measurementUnified field theoryMechanical engineering
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.
Owner:高昆

Distributed spacecraft formation control method based on communication quantization

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.
Owner:SHANGHAI JIAOTONG UNIV

Early warning method for small landslide of island reef based on gravity sensing and related device

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.
Owner:SOUTHERN BRANCH OF CHINA COMM CONSTR CO LTD +1

Suspender based on acceleration type gravitational field generator

InactiveCN120498291AMagnetic holding devicesUltrasonic levitationParticle beam
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.
Owner:高昆

Multifunctional gravitational field generator

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.
Owner:高昆

Gravitational field adaptation degree calculation method based on course optimization

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.
Owner:CENT CHINA OPTOELECTRONICS TECH RES INST (CHINA STATE SHIPBUILDING CORP 717TH RES INST)

Dual-surround detection method and system for Mumour system

PendingCN120348485ACosmonautic vehicle trackingOrbital flightGalaxy
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.
Owner:SHANGHAI SATELLITE ENG INST

Method for the Direct Measurement of Photon Energy and Gravitational Fields

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.
Owner:CALVERT SHANNON

Surface tracking systems and methods for downhole wellbore position and trajectory determination

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.
Owner:HALLIBURTON ENERGY SERVICES INC

Tetrahedron gravity forward modeling method, device and system and storage medium

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.
Owner:CHINA UNIV OF GEOSCIENCES (WUHAN)

Relativistic navigation reference bias calibration method based on fusion of star and pulsar information

ActiveCN119309600BState predictionAngular distance
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.
Owner:BEIJING INST OF CONTROL ENG

Earth free oscillation waveform rapid generation method and system for geocentric orbit space gravitational wave detection

The invention discloses a geocentric orbit space gravitational wave detection-oriented earth free oscillation waveform rapid generation method and system, which are used for solving the problems that the calculation process of the existing earth free oscillation waveform generation method is complicated, the time consumption is serious, the requirements of rapid noise evaluation and elimination in a task are difficult to meet, and the reliability is poor. And the calculation efficiency of the earth free oscillation waveform is low. The method comprises the following steps: acquiring earth gravitational field parameters and an inter-satellite instantaneous distance, and constructing an inter-satellite distance measurement acceleration analysis model by adopting a Couwurah linear perturbation method; correcting based on an earth free oscillation model, and determining a corrected inter-satellite distance measurement acceleration analysis model; when satellite orbit parameters, a simulation time sequence and earth free oscillation mode parameters are received, distance measurement acceleration signals among multiple satellites are calculated through the correction model; and selecting a target ranging acceleration signal, performing earth oscillation signal extraction on the target ranging acceleration signal by adopting a time delay interference method, and finally outputting a target earth oscillation signal.
Owner:SUN YAT SEN UNIV

Gravitational effect finite element simulation method based on solving partial differential equations of gravitational field

The application belongs to the technical field of space gravitational wave detection, and specifically discloses a gravitational effect finite element simulation method based on solving gravitational field partial differential equations, which comprises the following steps: inputting a weak form of the gravitational field partial differential equation in a physical field developer of simulation software COMSOL to construct a gravitational field interface plug-in; importing a spacecraft model into the simulation software COMSOL and constructing a space around the spacecraft; inputting a definite condition in the gravitational field interface plug-in; determining a gravitational potential through mesh partitioning and the gravitational field interface plug-in, and determining the gravitational field intensity of the spacecraft and the surrounding space based on the gravitational potential; and performing an integration operation on the test mass in the spacecraft based on the gravitational field intensity of the spacecraft and the surrounding space to determine the gravity and the gravity torque that the test mass receives. Through the application, the self-gravitational effect calculation process can be effectively simplified, and the gravity that an object with any shape receives can be calculated.
Owner:HUAZHONG UNIV OF SCI & TECH

Device for the production of a gravitational field and gravitational force with radio waves

A device consisting of a large capacitor connected to an extremely high voltage alternating power supply. By properly adjusting the frequency of the power supply, a stationary radio wave can be produced in the space between the capacitor plates that creates a gravitational field and is capable of causing a gravitational force to act on any mass placed in the space between the capacitor plates. Thus, a mass placed in the space between the capacitor plates will be lifted gravitationally. Multiple such capacitors can be connected to form arrays in the three directions of space, which allows movement of masses in the three directions of space.
Owner:DINU IONEL

Artificial field interference technology

InactiveCN120387353ADesign optimisation/simulationUnified field theoryMechanical engineering
The method is developed on the basis of a unified field theory and an interference field theory, and is also used for deeply exploring and further expanding an artificial field and quality technology. The core innovation point is that one or more gravitational field generators are used for generating positive and negative gravitational field fluctuations, and the positive and negative gravitational field fluctuations act on target substances respectively. Through the action mechanism, the mass of the substance can be increased or decreased. It is worth mentioning that the method introduces an interference mechanism in a method level, not only enriches application scenes of related theories, but also fills the technical blank of the interference field theory in the field to a certain extent, and provides a new thought and direction for subsequent related research and practice.
Owner:高昆

1. lifting force nguyen BALY: n*BALY fn*BALY = av 2; KG.m / s 2 2. new generation aircraft and spacecraft nguyen van ly: n*van ly and compatible devices 3. nguyen NGOC BAO new spaceport: n*BAO-s 4. artificial earth nguyen NGOC BAO: n*BAO artificial gravity and ship propulsion orbit director do THI QUY: n*QUY. 5. new parallel satellite system dominates the space nguyen levy: n*levy 30 september 2024. new sat n*levy 2025 6. nguyen levy: n*levy new formula accuracy: - spherical surface: sn*levy = π 2.r 2; m 2 and - spherical volume: vn*levy = π 2.r 3 / 3; m 3. 7. new theory nguyen kimberly: n*kimberrly structure and function of the solar system and the universe. flat gravitational field.

PCT designated stage expiredWO2025149120A2Artificial satellitesMarine propulsionSatellite system
1. LIFTING FORCE NGUYEN BALY: N*BALY Fn*Baly = av2; KG.Mm / s2 See figure 1, A and C 2. 2. NEW GENERATION AIRCRAFT AND SPACECRAFT NGUYEN VAN LY: N*VAN LY AND COMPATIBLE DEVICES See figures 2 and 3. 3. NGUYEN NGOC BAO NEW SPACEPORT: N*BAO-S See figures 2 and 3. 4. ARTIFICIAL EARTH NGUYEN NGOC BAO: N*BAO ARTIFICIAL GRAVITY AND SHIP PROPULSION ORBIT DIRECTOR DO THI QUY: N*QUY. See figures 2, 3, 4 and 4-3D. 5. NEW PARALLEL SATELLITE SYSTEM DOMINATES THE SPACE NGUYEN LEVY: N*LEVY 30 SEPTEMBER 2024. NEW SAT N*Levy 2025 See figures D, E and F. 6. NGUYEN LEVY: N*LEVY NEW FORMULA ACCURACY: - SPHERICAL SURFACE: Sn*Levy = π 2.R2; m2 and - SPHERICAL VOLUME: Vn*Levy = π 2.R3 / 3; m3. See figures H, I, J and K. 7. NEW THEORY NGUYEN KIMBERLY: N*KIMBERRLY STRUCTURE AND FUNCTION OF THE SOLAR SYSTEM AND THE UNIVERSE. FLAT GRAVITATIONAL FIELD. See figures A, B and D.
Owner:NGUYEN VAN LY

Method for exploring celestial body evolution form based on e-p-n quantum entangled state fundamental particle model

The invention relates to the technical field of universe, and particularly discloses a celestial body evolution form exploration method based on an e-p-n quantum entangled state fundamental particle model, which clearly points out the physical property, quantum property, entanglement, magnetic field (bending) property, quantum gravitational field and other basic properties of displacement current based on the e-p-n fundamental particle model. According to the method, the whole evolutionary process of a substance from ultimate quark (U-e-Kp-Kn) to an existing substance is clarified, formation of a galaxis, a fixed star and a planet is deduced on the basis of a substance formation mode of an e-p-n quantum entangled state basic particle model, a more scientific and reliable basis is provided for exploration of a celestial body evolution form, and the research of the evolutionary form of the celestial body is facilitated. And the progress of celestial body evolution form exploration can be further accelerated.
Owner:ZHONGSHAN YIDINGJIE NANOTECHNOLOGY CO LTD

Gravity gradiometer and navigation system using such a gravity gradiometer

The invention relates to a gravity gradiometer comprising at least two vehicles (V1, V2), each comprising an inertial measurement unit (UMI1, UMI2) and a control unit (COM1, COM2) for controlling the vehicles along paths having separate segments for performing inertial-measurement-unit reversals and coupled segments for exchanging inertial measurements. At least one of the electronic control units is arranged so to determine, in particular from the exchanged measurements: a transformation matrix between the inertial reference frames, a correction of the linear-acceleration measurements based on an observed accelerometric model, a correction of the angular-velocity measurements based on an observed gyrometric model, and a gradient of the gravitational field. The invention also relates to a navigation system comprising such a gravity gradiometer.
Owner:SAFRAN ELECTRONICS & DEFENSE (FR)

A Cyclic Superposition Acceleration Method and System Based on Gravitational Fields

PendingCN122078827AStrong structural adaptabilityImprove efficiencyControl devices for conveyorsNon-mechanical conveyorsMechanical engineeringGravitational field
This application relates to the field of accelerated transport technology, specifically to a cyclic superposition acceleration method and system based on a gravitational field. The method includes: determining the trajectory of a load unit around a natural gravitational field; arranging several acceleration units at intervals along the trajectory; placing the load unit on the trajectory and assigning it an initial velocity; and controlling the acceleration units to provide acceleration energy to the load unit as it passes through them. This application can utilize the natural gravitational environment to achieve stable, low-loss cyclic acceleration, meeting the high-efficiency operation requirements of long-distance transport.
Owner:CHENGDU HUIKAIDA TECH CO LTD

A fast prediction method for lunar orbit rendezvous guidance

This invention provides a rapid prediction method for lunar orbit rendezvous guidance, achieving high-precision and rapid prediction to meet mission requirements. The prediction method of this invention applies the gravitational field acceleration calculation method used for GPS autonomous orbit determination of Earth orbit satellites to the field of lunar orbit rendezvous. Addressing the problems that the algorithm cannot be directly applied to the design of lunar orbit rendezvous guidance strategies, improvements and upgrades are made one by one, resulting in a high-precision and rapid algorithm suitable for lunar orbit rendezvous flight control missions to meet mission requirements. Specifically, this invention is the first to transplant this algorithm to the field of lunar orbit applications, which is unprecedented. Considering the special characteristics of the lunar gravitational field, where the acceleration measures of various gravitational perturbations are of similar order and cannot be approximated by the J2 term alone, the J22 term perturbation acceleration is added to the algorithm, thereby significantly improving the computational accuracy and numerical stability of the algorithm.
Owner:BEIJING INST OF SPACECRAFT SYST ENG

Fine terrain gravitational field modeling method and system considering terrain errors

The invention discloses a fine terrain gravitational field modeling method considering terrain errors. The method comprises the following steps that research area data are obtained, and the research area data comprise a first local reference elevation, a first error-containing surface elevation and a first multi-dimensional topographic feature data set; performing random forest reasoning on the first multi-dimensional topographic feature data set to obtain a topographic error of the research area; carrying out subtraction on the topographic error of the research area and the first error-containing surface elevation to obtain an elevation difference; obtaining a corrected digital elevation model according to the elevation difference; performing inverse distance weighted fusion on the corrected digital elevation model and the first local reference elevation to obtain a fused digital elevation model; and performing partition adaptive terrain gravity field forward modeling on the fused digital elevation model to obtain a fine terrain gravity field model. The method has the characteristics of small error and good modeling effect.
Owner:SUN YAT SEN UNIV

Velocity measurement with reference to gravitational field

The present application relates to the technical field of measurement, and particularly to a method for measuring speed with a gravitational field as a reference system, which can measure the speed of a substance without an external physical reference system. A reference object having a direct force interaction with the substance is an absolute reference system, such as light or electromagnetic waves propagating in a gravitational field or a substance, which has a direct force interaction with the field or the substance. Relative to the light, the gravitational field and the substance are absolute reference systems of the light. Because of the existence of the absolute reference system, when the substance has a relative speed relative to the field, the speed of the substance itself can be measured by the optical path (the optical path refers to the propagation path length of light or electromagnetic waves) of the field, and this process is the speed measurement with the gravitational field as a reference system.
Owner:周国平

Landing control method of tethered asteroid probe suitable for irregular gravitational field of asteroid

The invention discloses a tethered asteroid probe landing control method suitable for an asteroid irregular gravitational field. The method comprises the following steps: under the condition that a detector and a lander in a tethered asteroid in an asteroid irregular gravitational field are separated, setting different expected trajectory strategies based on different descending stages of the lander; and designing a model prediction control algorithm based on different expected trajectory strategies set in different descent stages of the lander. The method solves the problems that in the landing process of a tethered asteroid detector of an asteroid irregular gravitational field, the tethered asteroid detector system dynamics is complex, and constraint conditions for ensuring safe flight of the detector and limiting the control capability of the detector exist; and the problem of establishing the optimal control of the asteroid landing trajectory planning is difficult to solve and the calculation speed is slow is solved.
Owner:NORTHWESTERN POLYTECHNICAL UNIV

Distribution prediction method and device for adjustable load in power grid, medium and product

The invention provides a distribution prediction method and device for adjustable loads in a power grid, a medium and a product, and relates to the technical field of power systems. Wherein the line structure of the power grid is of a communicating vessel model structure, the communicating vessel model enables the adjustable load in the power grid to move only in the vertical direction, and the distribution prediction method comprises the steps that current distribution data of the adjustable load in the power grid are acquired, and the distribution data reflect the corresponding relation between the position in the power grid and the adjustable load; according to the current distribution data, mapping the dynamic behavior of the adjustable load distribution into the motion state of the fluid in the gravity field; and predicting distribution data of the adjustable load in the power grid at the next moment according to the motion state. According to the invention, the accuracy of distribution prediction of the adjustable load in the power grid is improved.
Owner:SHAOGUAN POWER SUPPLY BUREAU OF GUANGDONG POWER GRID CO LTD