Patents
Literature
30 results about "Traverse" patented technology
Efficacy Topic
Property
Owner
Technical Advancement
Application Domain
Technology Topic
Technology Field Word
Patent Country/Region
Patent Type
Patent Status
Application Year
Inventor
Traverse is a method in the field of surveying to establish control networks. It is also used in geodesy. Traverse networks involve placing survey stations along a line or path of travel, and then using the previously surveyed points as a base for observing the next point.
A method for automatically generating river cross sections and feature extraction
The application discloses a kind of automatically generated river section and feature extraction method, comprising: by specified numerical value, along the river center line / longitudinal axis line generation point, and point is set to number along river direction, and adjacent line recursive generation center line is given to these line number;According to the order of numbering, traverse point, and make perpendicular to its adjacent line;Generation perpendicular segment and the intersection of adjacent line, and these intersection points are given the numbering value consistent with point;With intersection point along the direction of existing perpendicular segment, continue to make perpendicular to its adjacent line;Respectively, the intersection of perpendicular segment and adjacent line is solved, and these intersection points are given the numbering consistent with the starting point of perpendicular segment;Until perpendicular segment reaches river boundary;According to center line number and the intersection point number of generated perpendicular segment, line segment is generated, and automatic section establishment is completed;Information extraction point is generated by the generated section line;Extract section two / three-dimensional grid data information.The application realizes the automatic section generation and attribute extraction of river with relatively severe width and curvature variation.
Owner:YANGTZE RIVER FISHERIES RES INST CHINESE ACAD OF FISHERY SCI +1
A coal seam target geological structure identification method, system and device
This application discloses a method, system, and device for identifying target geological structures in coal seams. The target geological structures include folds, faults, lower local thickening zones, and upper local thickening zones. The method acquires full measured data of cross-layer boreholes in the target longwall face, along with the strike, dip, and true dip parameters of the coal seam. Preprocessing yields the three-dimensional coordinates of the borehole entry point, the three-dimensional coordinates of the exit point, and the true thickness of the coal seam. A square nine-grid analysis window is constructed with the strike and dip of the coal seam as the directional reference. Target cross-layer boreholes with stable coal seam thickness are selected based on the deviation of the true thickness of the coal seam. A spatial plane equation of the coal seam is established to calculate the theoretical entry point elevation of the target cross-layer borehole, generating regional target geological structure identification results. A sliding window traverses the entire longwall face, outputting the overall regional target geological structure identification results. This method can stably identify hidden small target geological structures and significantly improves computational efficiency compared to traditional methods. It can be widely applied to advanced geological exploration scenarios in coal mine longwall faces.
Method and system for quality inspection of river flow direction contradiction and electronic equipment
The invention discloses a method and a system for quality inspection of river flow direction contradictions and electronic equipment. The method comprises the following steps: acquiring river element data based on a linear water system layer of a geographic information database; analyzing the river element data to obtain at least one river vector; the river vectors are traversed, key value pair information of river nodes is generated based on a preset data structure, and the key value pair information comprises coordinate information of the river nodes, the number of starting points corresponding to the river nodes, starting point geometric figures, the number of terminal points and terminal point geometric figures. And identifying flow direction contradictory nodes in the river nodes according to a preset flow direction contradictory condition and the key value pair information. According to the method, automatic and high-precision recognition of river flow direction contradictions is realized by constructing a key value pair data structure, flow direction logic errors in various directed line elements can be quickly and accurately positioned, vector data quality and storage efficiency are remarkably improved, and reliable technical support is provided for geographic information system data management and water system network analysis.
Owner:自然资源部陕西测绘产品质量监督检验站(陕西省测绘产品质量监督检验站)
Acceleration railway precision conductor construction method capable of increasing virtual control points
The invention discloses a speed-up railway precision conductor construction method with virtual control points added, which comprises the following steps: S1, arranging conductor points in a staggered manner along two sides of the advancing direction of a speed-up railway line, and arranging the virtual control points between the adjacent conductor points; s2, arranging total stations on each traverse point one by one, and arranging prisms on two front and back adjacent traverse points and adjacent virtual control points; observing each prism by using a total station to obtain a horizontal direction, a slant distance and a vertical angle from the center of the total station to the center of each prism; s3, performing gross error detection analysis on the observation values, and rejecting the detected gross error observation values or re-measuring the observation stations where the gross error observation values are located; and S4, establishing an acceleration railway conductor control network with virtual control points by using all reliable horizontal angles and horizontal distances. According to the method provided by the invention, on the premise of not increasing the burying cost of the control points, on the basis of the connecting wires, only several temporary target points are observed by each observation station, so that the effect of remarkably improving the precision and reliability of the control network is achieved.
Owner:NEIJIANG NORMAL UNIV
Mine laneway measuring system
The utility model discloses a mine laneway measuring system, which aims to optimize the layout of conductor points and arrange irradiation lamps on the ground for supplementing light, and adopts the technical scheme that the mine laneway measuring system comprises a total station, the irradiation lamps and a plurality of conductor points, the number of the irradiation lamps is the same as that of the conductor points, and the irradiation lamps and the conductor points are in one-to-one correspondence; the line guide points are divided into permanent line guide points and temporary line guide points, the permanent line guide points are arranged at the top of the roadway, the temporary line guide points are arranged at the bottom of the roadway, and the number of the temporary line guide points is larger than that of the permanent line guide points; the total station is arranged on one of the temporary lead points; the irradiation lamp is placed at the bottom of a roadway and used for supplementing light, the irradiation direction of the irradiation lamp is adjustable, and the device belongs to the technical field of roadway measurement.
Owner:广东煤炭地质二O一勘探队
System for estimating lead precision
The invention relates to the technical field of surveying and mapping engineering, in particular to a lead precision estimation system which comprises a data acquisition module, a coordinate conversion module, a lead design module, a precision estimation module, a visual display module, a data interaction module and a data storage module. The data acquisition module collects geographic space data of a to-be-processed area and parameters of a measuring instrument; the coordinate conversion module converts the latitude and longitude coordinates into plane projection coordinates through Gaussian positive calculation; the wire design module constructs an edge measurement net, an angle measurement net or a corner net, sets an edge length threshold value, and matches instrument parameters corresponding to a second-level control net and a fourth-level control net; the precision estimation module calculates a weakest point median error and a weakest edge relative median error, and decomposes and calculates a plane through error; the visualization module draws a lead element and an error ellipse on the online map; data interaction supports CSV format import and export, and the storage module stores data support operation through a unified array. The method improves the estimation efficiency and precision, adapts to multiple engineering scenes, and reduces the achievement application threshold.
Owner:THE FOURTH OF CHINA EIGHTH ENG BUREAU
Traverse direction control apparatus and method for autonomous driving
An embodiment of the present invention relates to a traverse direction control method, apparatus, and moving object for autonomous driving. More particularly, the traverse direction control apparatus for autonomous driving includes an information collection part for collecting data from one or more cameras mounted on an autonomous moving object; a target point information calculation module for calculating target point information on the basis of information collected from a camera module; and a traverse direction control parameter calculation module configured to obtain, based on the target point information, a traverse direction distance from the moving object at time t to a target point, an angle between a head of the moving object and the target point, and a present yaw rate of the moving object, and calculate a traverse direction control parameter of time t+1 based on a pre-stored kinematic model.
Owner:NEUBILITY
A long-distance tunnel control through-accuracy measurement and verification system
ActiveCN224398667UControl and improve penetration accuracyCalibration accuracyAngle measurementMining devicesClassical mechanicsMechanics
The application discloses a long-distance tunnel control through-accuracy measurement and verification system, and relates to the technical field of tunnel construction measurement. The system comprises a measurement control point, an observation traverse, a traverse stake, a traverse measurement network, the observation traverse being arranged on the traverse stake, one end of the observation traverse being connected with the measurement control point, the other end of the observation traverse being connected with the traverse measurement network, a first ground control network; the system further comprises a pilot hole, a verification traverse, a through tunnel, a horizontal drill hole and a second ground control network; the structure of the second ground control network is the same as that of the first ground control network, the verification traverse is arranged in the pilot hole and along the length direction of the pilot hole, the verification traverse is installed on the traverse stake of the second ground control network, one end of the verification traverse is connected with the measurement control point of the second ground control network, and the other end of the verification traverse is connected with the traverse measurement network through the horizontal drill hole. The application has the effect of verifying the through-accuracy measurement result of the first ground control network.
Owner:CHINA CONSTR FIRST GROUP THE FIFTH CONSTR +1
Multi-technology joint measurement method for ultra-long undersea twin-tunnel railway tunnel plus service tunnel
This invention discloses a multi-technology combined measurement method for ultra-long undersea twin-tunnel railway tunnels and service tunnels, including GNSS measurement outside the tunnels, traverse measurement considering vertical deviation correction, coordinate transfer measurement from free stations in deep shafts, and combined measurement of free stations, intersecting double traverses, and gyro-orientation inside the tunnels. Where the undersea tunnels are relatively short at the connecting points of the cross tunnels, a denser stationing method is used for direction and distance transfer. Combined traverses are used inside the tunnels to enhance azimuth accuracy with gyro-orientation measurement. This invention leverages the advantages of GNSS and total stations, improving the efficiency of deep shaft measurement in long tunnels and enhancing the accuracy of coordinate transfer in deep shafts. Furthermore, the denser stationing method used inside the cross tunnels for direction and distance transfer, along with closed-loop networking between different cross tunnels, improves the reliability of tunnel plane control measurement accuracy and ensures complete consistency of the coordinate systems of the left and right tunnels and the service tunnel.
Owner:CHINA RAILWAY DESIGN GRP CO LTD
Special long tunnel control point layout structure and control measurement method
The present application relates to the technical field of tunnel engineering, in particular to a special long tunnel control point layout structure and control measurement method, comprising the following steps: according to the field measurement condition, the entrance control points C and D are arranged on a pier, and the entrance direction points A and B can be arranged separately or on a pier. In the present application, based on the "Z" type diamond traverse ring, the forced centering pier is arranged to weaken the influence of instrument centering error, and the work of repeatedly burying control piles is avoided. The centering pier is not easy to be disturbed, and the workload and cost are reduced. The control point arrangement makes the target prism have small interference and large angle, improves the measurement accuracy, the cross arrangement method avoids the influence of side light, ensures the data quality, each control point forms a closed quadrilateral, provides redundant observation values, facilitates the detection of data gross error, and facilitates data comparison and analysis. Through comparison of point coordinates, angles and side lengths, gross errors are found and data are reviewed.
Owner:CHINA RAILWAY EIGHTH BUREAU GROUP SECOND ENGINEERING CO LTD +1
Intelligent site selection method, system and equipment for transformer substation and medium
The invention discloses an intelligent site selection method, system and equipment for a transformer substation and a medium, and the method comprises the steps: obtaining a site selection evaluation framework through constructing a five-dimensional evaluation factor system and combining a user preference matrix and a scene triggering mechanism; performing weight calculation and dynamic updating on each evaluation factor by introducing an analytic hierarchy process and fusing a real-time remote sensing interpretation result to obtain a dynamic weight distribution scheme; performing weighted stacking on each factor grid map layer to generate a comprehensive suitability score map; sliding window size traversal search is set according to the voltage grade, high-resolution areas meeting the land occupation requirement are extracted, and a preliminary candidate land parcel set is obtained; a non-maximum suppression algorithm is applied to calculate the space overlapping degree between land parcels, high-resolution conflict-free point locations are reserved, and a non-redundant candidate point set is obtained; and generating a vector layer with score and constraint information, and visually outputting the vector layer to obtain a substation site selection recommendation result. According to the method, the automation level, the space rationality and the actual implementation of substation site selection are comprehensively improved.
Owner:YUNNAN POWER GRID CO LTD KUNMING POWER SUPPLY BUREAU
A method for adjusting a tunnel overrun error
PendingCN122108072ADigital data processing detailsSurveying instrumentsDesign softwareControl theory
The application discloses a kind of adjustment methods of tunnel overrun through error, according to the through error measurement value and through control measurement results of rechecking, through locking tunnel hole inside traverse control network and using line design software to design conforming line type, including step one, tunnel through error determination is carried out;Step two, tunnel lining section cross section survey is carried out;Step three, tunnel through control measurement is carried out;Step four, lining section cross section rechecking is carried out;Step five, tunnel through section line type is calculated;Step six, tunnel through section construction is carried out.This method maximally ensures that lining section does not need to be changed and reworked, uses road design software through line adjustment link, can greatly adjust tunnel overrun through error, can be quickly and accurately calculated, without reworking the part that has been constructed, fast construction fast closure.
Owner:CHINA RAILWAY NO 5 ENGINEERING GROUP CO LTD +1
Map health monitoring for autonomous systems and applications
In various examples, health of a high definition (HD) map may be monitored to determine whether inaccuracies exist in one or more layers of the HD map. For example, as one or more vehicles rely on the HD map to traverse portions of an environment, disagreements between perception of the one or more vehicles, map layers of the HD map, and / or other disagreement types may be identified and aggregated. Where errors are identified that indicate a drop in health of the HD map, updated data may be crowdsourced from one or more vehicles corresponding to a location of disagreement within the HD map, and the updated data may be used to update, verify, and validate the HD map.
Owner:NVIDIA CORP
Tunnel sideline automatic generation and topological relation processing method based on traverse point data
The invention relates to the technical field of mine roadway sideline generation, in particular to a roadway sideline automatic generation and topological relation processing method based on traverse point data, and the method comprises the steps: S1, generating a sideline of a target roadway based on traverse point data; s2, in the side line extending process of the target roadway, if the target roadway intersects with other roadways, the step S3 is executed; if shielding exists between the roadway and other roadways, the step S4 is executed; s3, adjusting the side boundary of the target roadway in real time through a roadway intersection processing algorithm; s4, adjusting the side boundary of the target roadway in real time through a roadway shielding processing algorithm; and S5, repeating the steps S2 to S4 until the sideline of the target roadway is drawn. By processing roadway intersection and roadway shielding in the roadway sideline drawing process in real time, the mine roadway sideline generation quality and accuracy are improved.
Owner:CHONGQING MAS SCI & TECH CO LTD
Two-Dimensional LiDAR-Based Method for Extracting Environmental Rectangular Point Coordinate Angle
A method for extracting coordinates and angle of environmental rectangular points based on two-dimensional lidar: Traverse laser dots in the natural environment point cloud frame scanned by laser; select the neighborhood dot set of a random dot Pk, calculate the mean value of angles between lines from Pk to other dots and the X-axis of the laser coordinate system as the segmentation line; divide into left and right dot sets and extract inner dots; fit straight lines, and take their intersection as a rectangular point when the included angle is close to 90°; draw half-lines with the rectangular point as the vertex to determine the angle. This method can extract coordinates and angles of building rectangular points.
Owner:ZHEJIANG KECONG CONTROL TECH CO LTD
Long-distance small-diameter shield tunneling measurement method
The application discloses a long-distance small-diameter shield tunneling measurement method and relates to the shield tunneling field, which comprises the following steps: carrying out the re-measurement of the original control point and the encryption control point plane control network and the elevation control network outside the hole, and establishing a hole outside measurement datum; based on the hole outside measurement datum, arranging the control points around the working well, and performing periodic re-measurement, wherein the working well comprises a starting well L3 and a receiving well L2; using the multi-medium coordinate transfer to complete the contact measurement between the well and the underground, introducing the ground measurement datum into the underground, and then introducing the elevation control point near the well mouth into the working well by using the inverted scale method. The application effectively solves the receiving deviation problem of the long-distance small-diameter shield curve segment caused by error accumulation through the whole process layered measurement steps of the hole outside datum establishment, the periodic re-measurement of the working well control point, the contact measurement between the well and the underground, the whole hole closed traverse measurement and the post-penetration traverse rechecking, and the high-precision penetration of the >=2km long-distance tunneling is ensured.
Owner:CHINA RAILWAY NO 5 ENGINEERING GROUP CO LTD +1
Route planning for a ground vehicle through unfamiliar terrain
ActiveUS20250383217A1Instruments for road network navigationNavigational calculation instrumentsTerrainSimulation
A method is provided for supporting one or more ground vehicles on a mission that includes traversal of a ground region. The method includes accessing geospatial data produced from an aerial survey of the ground region, and performing an analysis of the geospatial data to produce terrain data that describes the ground region. The terrain data is weighted based on constraints of the one or more ground vehicles, and an order of priority of criteria of the mission. A map is constructed in which the ground region is expressed as a geospatially-mapped array of the weighted terrain data, and the map is searched for a path that meets the criteria of the mission. The path is described by a series of waypoints that define a route across the ground region, and an indication of the route is output for the one or more ground vehicles to traverse during the mission.
Owner:INSITU INC
Route planning for a ground vehicle through unfamiliar terrain
ActiveUS12590816B2Instruments for road network navigationNavigational calculation instrumentsTerrainSimulation
A method is provided for supporting one or more ground vehicles on a mission that includes traversal of a ground region. The method includes accessing geospatial data produced from an aerial survey of the ground region, and performing an analysis of the geospatial data to produce terrain data that describes the ground region. The terrain data is weighted based on constraints of the one or more ground vehicles, and an order of priority of criteria of the mission. A map is constructed in which the ground region is expressed as a geospatially-mapped array of the weighted terrain data, and the map is searched for a path that meets the criteria of the mission. The path is described by a series of waypoints that define a route across the ground region, and an indication of the route is output for the one or more ground vehicles to traverse during the mission.
Owner:INSITU INC
Surrounding rock instability trace dynamic search method based on safety coefficient, computer equipment and storage medium
The invention discloses a surrounding rock instability trace dynamic search method based on a safety coefficient, computer equipment and a storage medium, and the method mainly comprises the steps: simulating a three-dimensional numerical model, simulating a tunnel excavation and support construction process, calculating the safety coefficient of each unit body of surrounding rock after the current excavation cycle is completed, and searching the surrounding rock instability trace according to the safety coefficient. All surrounding rock units are traversed, safety coefficient data are extracted and processed, potential instability units are identified, unit screening focusing instability areas are carried out, a closed-loop mechanism is adopted to carry out dynamic iteration and instability simulation, and finally a result is output. By the adoption of the scheme, the stable state of the surrounding rock under different stress conditions can be accurately recognized, better universality is achieved, the development process is simulated through dynamic iteration, the defect that instability dynamic characteristics cannot be considered in a traditional method is overcome, and a dynamic and reliable basis can be provided for optimization design of a supporting scheme.
Owner:CHONGQING JIAOTONG UNIV
Seismic data high-resolution time-frequency analysis characterization method based on inverse filtering
PendingCN122043552ASeismic signal processingComplex mathematical operationsDominant frequencyVery high resolution
The invention belongs to the technical field of seismic data high-resolution time-frequency analysis and characterization, and particularly relates to a seismic data high-resolution time-frequency analysis and characterization method based on inverse filtering, and the method comprises the steps: calculating the time-varying dominant frequency of a seismic signal, and obtaining a W transformation result of the seismic signal based on the time-varying dominant frequency; parameters of the sliding time window are set, the parameters comprise the time window length and the sliding step length, and the sliding step length is integer power of 2; the sliding time window is applied to the W transformation result, and inverse filtering operation is carried out on the W transformation result in the sliding time window; and moving the sliding time window according to a set sliding step length, and repeating the step 3 until the sliding time window traverses the whole seismic data to obtain a high-resolution time-frequency analysis characterization result.
Owner:CHINA UNIV OF PETROLEUM (BEIJING)
Pollutant three-dimensional concentration distribution model construction method and system
The invention provides a pollutant three-dimensional concentration distribution model construction method and system, and relates to the technical field of atmospheric environment monitoring, and the method comprises the steps: dividing a to-be-measured region into a plurality of height layers with uniform height according to the building height distribution information of the to-be-measured region; dividing the to-be-detected region into different types of sub-regions based on a region definition rule, and giving region weights based on the types of the sub-regions; grid division is carried out on each sub-region based on the region weight of each sub-region, a target sampling point is determined according to distribution information of grids in the to-be-detected region, and the grid density of the sub-regions is in positive correlation with the corresponding region weight; an optimal path is planned at each height layer through a genetic algorithm, so that the flight path of the unmanned aerial vehicle traverses and passes through each target sampling point; interpolation is carried out based on sampling data of the unmanned aerial vehicle along the planned path, and a pollutant three-dimensional concentration distribution model of the to-be-detected area is constructed. By means of the method, stereoscopic perception and refined modeling of pollutants in the to-be-detected area are achieved.
Owner:CENT SOUTH SAFETY & ENVIRONMENTAL TECH RES INST CO LTD
Pipe jacking construction method and process
The application relates to the technical field of pipe jacking construction, in particular to a pipe jacking construction method and process, which comprises the following steps: S1, topography and control network establishment, the traverse network and the leveling network and the control points provided by a construction unit are re-measured, and the accuracy of 1mm is ensured. The application ensures careful preparation before construction through topographic survey and control point re-checking, and improves construction accuracy and efficiency. The re-checked control point data and the establishment of the precise control network guarantee accurate alignment and orientation during the construction process, reduce the possibility of error occurrence, and reduce the influence on the surrounding environment. The use of a total station and a level instrument for lofting guarantees the consistency of the design coordinates and the actual positions of the shaft and the pipeline, and improves the reliability of the construction. In addition, accurate pipe jacking machine installation and debugging, as well as calculation and checking of the jacking force parameters, ensure construction safety and the smoothness of the jacking process. These measures not only improve the construction quality, but also effectively reduce the risk.
Owner:BEIJING ZETONG WATER PROCESSING CONSTRUCT CO LTD
An interactive geological profile map construction and rendering method based on a three-dimensional scene
The application discloses a kind of based on three-dimensional scene's interactive geologic profile construction and rendering method includes, first load real scene three-dimensional model and bind standardization stratum database;User is interactively drawn multiple segment broken line traverse on three-dimensional model surface;System is automatically laid out station on traverse, determines stratum by intersection calculation and extracts occurrence parameter;Subsequently, with traverse parallel distance as weight calculation unified profile projection azimuth, using geometric analytical formula correction obtains each station apparent dip;Finally, in two-dimensional coordinate system, locate station and draw boundary, automatically match and fill standard vector lithology symbol to generate profile drawing.The application realizes high-precision measurement under three-dimensional continuous terrain, and establishes real-time linkage of drawing and underlying database, data change can trigger automatic redrawing in seconds, effectively solves the distortion and data disconnection problem of traditional two-dimensional map, greatly improves mapping efficiency and standardization degree.
Owner:NANJING INST OF GEOLOGY & PALAEONTOLOGY CAS
Tunnel construction surveying method
The application relates to the technical field of tunnel construction, in particular to a tunnel construction measurement method. The construction measurement method comprises the following steps: S1, before tunnel construction, according to a measurement error propagation law, carrying out in-hole control measurement design; S2, near a tunnel portal, arranging plane control points and elevation control points, and carrying out portal control measurement; S3, arranging a cross traverse main control network in a tunnel hole, and based on the cross traverse main control network arranged in the tunnel hole, carrying out in-hole control measurement; S4, using a total station to measure the in-hole traverse, and carrying out tunnel construction lofting; and S5, after the tunnel is penetrated, measuring and adjusting the penetration error. The application solves the defects of low measurement accuracy, complex operation and low efficiency of the tunnel construction measurement method in the prior art, and realizes an efficient and accurate tunnel construction measurement method.
Owner:CHINA RAILWAY 19TH BUREAU GRP EAST CHINA ENG CO LTD
Work machine implement control for autonomous subterranean surveying and marking applications
A work machine comprises or otherwise has associated therewith a subterranean monitoring sensor, such as a ground penetrating radar, electromagnetic locator, etc. During a subterranean monitoring operation, movements of the work machine may be controlled according to a defined traverse plan, e.g., associated with electronic worksite maps. A controller for the work machine, a remote server, or the like may detect subterranean objects via output signals from the subterranean monitoring sensor, and automatically map parameters associated with detected objects to respective locations in the electronic worksite map. In addition, or alternatively, the controller may automatically generate visual marks on the surface of the terrain corresponding to identified locations of the subterranean objects, based on currently and / or previously identified locations. In some embodiments, data from multiple monitoring operations may be aggregated in data storage and utilized for subsequent earth working operations by generating worksite maps having the object data mapped thereto.
Owner:DEERE & CO
Map monitoring for autonomous systems and applications
PendingUS20260043672A1Character and pattern recognitionNavigation instrumentsData miningHigh definition
In various examples, health of a high definition (HD) map may be monitored to determine whether inaccuracies exist in one or more layers of the HD map. For example, as one or more vehicles rely on the HD map to traverse portions of an environment, disagreements between perception of the one or more vehicles, map layers of the HID map, and / or other disagreement types may be identified and aggregated. Where errors are identified that indicate a drop in health of the HD map, updated data may be crowdsourced from one or more vehicles corresponding to a location of disagreement within the HD map, and the updated data may be used to update, verify, and validate the HD map.
Owner:NVIDIA CORP
A method for transferring planar coordinates inside and outside a tunnel based on inertial navigation
ActiveCN120760730BNavigational calculation instrumentsNavigation by speed/acceleration measurementsData acquisitionClassical mechanics
This invention relates to the field of engineering surveying technology, specifically to a method for transferring planar coordinates inside and outside tunnels based on inertial navigation during the tunnel construction phase. It includes: preliminary preparation; continuous data acquisition along a closed route; post-construction data processing to calculate the initial coordinates of points within the tunnel in the CGCS2000 coordinate system; distance constraint adjustment between point pairs within the tunnel to improve measurement accuracy; and coordinate transformation to calculate the tunnel planar engineering coordinates of the points within the tunnel. This invention features one-button start-up of the inertial navigation system, continuous and automatic data acquisition, eliminating the need for manual instrument setup and readings, and requiring no manual intervention. It reduces the minimum of three people required for traverse surveying to only one, significantly reducing workload and improving measurement efficiency. This invention achieves high-precision transfer of planar coordinates inside and outside tunnels in scenarios without CPIII control points, improving applicability. Through closed-path design and dynamic weighted fusion, this invention fundamentally solves the problem of drift in inertial navigation measurements during the construction phase, a problem that is otherwise impossible to address.
Owner:CCCC FIRST HARBOR ENGINEERING CO LTD +1
Underground measurement traverse point protection device
Owner:NANJING YINMAO LEAD-ZINC MINING CO LTD
Method and system for fusing point cloud traverse measurement and non-contact fault location
The invention relates to the technical field of traverse measurement, and discloses a method and system for fusing point cloud traverse measurement and non-contact fault localization, and the method comprises the steps: carrying out the filtering processing of a three-dimensional point cloud data set, and separating a shape point cloud set; fitting the shape point cloud set into an initial space path of the target object according to a spatial arrangement sequence of the point clouds, and performing spatial interpolation processing on an initial space path section to obtain a continuous space path; carrying out integral calculation on the continuous space path to obtain an actual path length; receiving a fault signal, and performing time characteristic analysis on the fault signal to obtain a time difference sequence; according to the time difference sequence and the continuous space path, deriving a fault initial point set through a traveling wave distance measurement principle; analyzing the spatial distribution dispersion of the fault initial point set, and removing abnormal points in the fault initial point set by combining a continuous spatial path to obtain a fault positioning result; according to the invention, the accuracy of wire measurement and fault location can be improved.
Owner:GANSU SHINING SCI & TECH +1
A method for coherent calculation of gradient structure tensors based on Gaussian differential operators
This invention relates to a coherent calculation method for gradient structure tensors based on Gaussian differential operators. It includes: preprocessing a 3D seismic data volume; performing a Hilbert transform on the processed data volume and calculating the instantaneous phase, using the calculated instantaneous phase information as input data for constructing the structure tensor; using multi-scale Gaussian differential operators to calculate the gradients in the traverse, trace, and time directions to construct the gradient structure tensor; using Gaussian smoothing in the approximate fault and stratigraphic directions to enhance the lateral discontinuities in the gradient structure tensor corresponding to fault and stratigraphic features; performing matrix eigenvalue decomposition; and finally, performing different coherence solutions. This invention's gradient structure tensor coherent calculation method based on Hilbert transform and Gaussian smoothing can highlight narrow channels and small-impact faults; by utilizing the structure tensor, it reduces the sensitivity of coherence algorithms to noise, reduces signal clutter and strong noise interference at the intersections of channels and small-scale faults, and improves the accuracy of coherence identification.
Owner:CHINA PETROLEUM & CHEMICAL CORP +1