135 results about "Topographic relief" patented technology

The invention discloses a POS-aided method for matching aerial images, which comprises the following steps: firstly, utilizing an exterior orientation element obtained by the POS to construct a homonymous nucleofilament constraint equation and predict the initial parallax of an image; then, establishing an image pyramid according to the initial parallax and an approximate one-dimensional image correlation which carries out nucleofilament constraint layer by layer on the image of the pyramid; and finally adopting the matching of least-square images to confirm homonymous image points and pick mismatched points, thereby obtaining the homonymous image points of the images to be matched. The invention which adopts the POS-aided image matching method to automatically measure image points has the advantages that not only the application potential of the POS can be fully developed; but also the matching rate and the matching efficiency of automatically rotating points can be improved; and the problems that the rotating points of the images are so difficult to be matched that the rotating points are required to be measured manually and interactively are solved, for example, the rotational angles of certain images are too large, the image texture is not obvious, and the topographic relief is bigger.

The invention provides a predication method of a happening position of a slump disaster after an earthquake based on multiple factors. The method comprises the following steps: obtaining a plurality of basic geographical parameters of a space to be predicated, a road parameter, a plurality of geological parameters, an earthquake parameter, a geographic position of at least one known slump point and geographic positions of a plurality of points which are not slumped; calculating a Newmark displacement amount Dn based on a Newmark displacement model; constructing a binary Logistic regression equation by a distance from a predicated position to a river, a distance from the predicated position to a fault zone, a topographic relief level and a distance from the predicated position to a road; calculating a partial regression coefficient of respective variable factor in the regression equation by taking all the parameters of the known slump point and the points which are not slumped, and the calculated Newmark displacement amount Dn as known conditions; and utilizing the calculated partial regression coefficient to construct a slump disaster predication model of the space to be predicted.

A method for the creation of subsurface water management systems that place subsurface drainage lines at a consistent grade and within defined elevation bounds throughout a field with topographical undulation and inconsistent slopes, incorporate control weirs for dividing the subsurface into elevation and acreage zones, place and size surface to subsurface, size and determine inside surface of drainage mains and laterals according to the desired coefficient of the subsurface system, and determine the amount of water required at irrigation inlets in order to deliver a determined amount of water into the subsurface system for purposes of irrigation.

The invention discloses a low-altitude flight control method applied to airborne geophysical prospecting of an unmanned aerial vehicle. The low-altitude flight control method includes adopting complementary filter of pressure altitude and radio altitude of the unmanned aerial vehicle to obtain altitude signals with high signal to noise ratio as a low-altitude flight height control source of the unmanned aerial vehicle. High-frequency topographic influence can be filtered by flight altitude, terrain can be well tracked, and airborne geophysical prospecting flight operation can be realized effectively in hills and small-gradient mountainous areas, so that the unmanned aerial vehicle can fly at minimum altitude along topographic relief, track the terrain and effectively avoid obstacles and is capable of acquiring high-quality exploration data of an airborne geophysical prospecting operation aeromagnetic system and an airborne radioactive system, and geophysical prospecting safety is improved. Feasibility of the low-altitude flight control method is verified by practical tests, is completely succeeded and has pilot application effect for relevant flight control methods and creates basis for massive airborne geophysical prospecting application in the unmanned aerial vehicle.

The invention relates to a PS-InSAR technology-based historical settlement risk assessment method for surrounding environments along the subways. The method comprises the steps of employing N SAR images as input, registering all SAR images into a same mesh through an image registration method; selecting SAR images which are relatively small in time baseline and space baseline to generate an interferogram and removing an interferometric phase caused by topographic relief through a two-pass method; selecting candidate PS points (PSC) from the images, and compensating an error phase caused by an atmospheric change and an error phase caused by inaccurate orbit data by using information of the PSCs; and carrying out point-to-point analysis on all pixel points in the images by using the compensated phase information, identifying PS points again, and estimating deformation information and elevation error information thereof.

The invention provides a wheel-type detection mobile robot control system and method and relates to the field of robot control technologies and safety. The invention overcomes the problem that the conventional wheel-type detection mobile robot can be damaged when operating in a complex environment as topographic relief is large. A wireless signal input or output end of a remote control operation unit is connected with the output or input end of an external communication unit, the external communication unit is connected with a master control unit, two paths of communication signal input or output ends of the master control unit are connected with two paths of communication signal output or input ends of a sensor unit respectively, the input or output end of the master control unit is connected with the output or input end of a movement control unit, the output end of the movement control unit is connected with the input end of a drive control unit, and the input end of the movement control unit is connected with the output end of the drive control unit. The robot can be used in an operation environment where the topographic relief is large, and selects the operation mode according to change in real-time parameters of vehicle body operation collected by a vehicle-mounted sensor, so that the safety operation of a vehicle body is ensured.

The invention relates to a site stratum three-dimensional geological structure model generation method for natural foundation replacement quantities calculation, for solving the defect of tedious and subjective foundation replacement quantities calculation compared to the prior art. The method comprises the following steps: preprocessing original data, collecting site exploration hole data and topographic map data, and performing interpretation preprocessing on the exploration hole data and the topographic map data; establishing an initial triangle network model, performing interpolation calculation on preprocessed data, and preliminarily generating an irregular triangle curved surface and a landform fluctuating curved surface; establishing stratum information of virtual borings, inserting the virtual borings, and fitting the stratum information of the virtual borings corresponding to a standard stratum; and generating an site three-dimensional geological structure model, through combination with curved-surface data of each stratum and the landform fluctuating curved surface, setting side restriction conditions, and generating a triangular-prism-element-based three-dimensional model. The method provided by the invention greatly improves the work efficiency and eliminates manual calculation errors.

The invention provides a predication method for predicating a collapse disaster position after earthquake. The predication method comprises the steps that multiple basic geographic parameters, multiple geological parameters, earthquake parameters, the geographic position of at least one known collapse site and the geographic positions of multiple non-collapse sites of the space to be predicted are obtained; Newmark displacement Dn is computed on the basis of the Newmark displacement model; a binary Logistic regression equation is constructed according to the distance between the predicted position and a river, the distance between the predicted position and a fracture zone, the topographic relief and the Newmark displacement Dn; by taking the parameters of the known collapse site and the non-collapse sites and the computed Newmark displacement Dn as the known conditions, the partial regression coefficient of each independent variable factor in the regression equation is computed; and the computed partial regression coefficients are utilized to construct the collapse disaster prediction model of the space to be predicated.

The invention relates to a method for obtaining geometrical parameters of typical terrains in a digital map. The method includes the steps of terrain classification and recognition, terrain simplification, extracting of the geometrical parameters of the terrains and the like. According to the digital map in the GeoTIFF format in the ASTER GDEM type, by means of an ArcGIS tool, the normalized elevation, the normalized gradient, the normalized gradient variability, the normalized curvature and the normalized terrain undulation are calculated, iterative selforganization (ISO) unsupervised clustering is carried out with the obtained parameters as characteristic indexes, and the preliminary classification of the terrains is obtained; then the terrains are classified into the plain, the hill, the low mountain, the medium mountain, the high mountain and the like according to the average undulation of the various terrains; the geometrical parameters such as the positions, the bottom faces and the heights of the typical terrains are finally obtained. The method has the advantages of being feasible and practical.

The invention provides a method for visualizing a dynamic water area by matching with a real three-dimensional environment. The method comprises the following steps of step 1, building a foundation terrain of the three-dimensional environment, wherein the foundation terrain comprises elevation data of the ground and corresponding matched image data; step 2, setting the shape covered by a water wave surface according to the foundation terrain of the three-dimensional environment, and building a water area surface according with the change of the foundation terrain; step 3, controlling and updating the shape covered by the water wave surface according to information of each top point defined by the water area surface and triangular patch information; step 4, updating corresponding position points of each top point of the water area surface according to a time sequence, meanwhile, updating the color of the patch surface of each triangular patch corresponding to the water area surface, reflecting the reflection and refraction phenomena of illumination, and acquiring the information of the dynamic water area; step 5, displaying the information of the dynamic water area to a user. The three-dimensional dynamic water surface which accords with watershed morphology and topographic relief change can be drawn in any spherical three-dimensional real environment.

The invention relates to an SAR (synthetic aperture radar) image orthorectification method based on a polynomial, which comprises the following steps of: calculating a relied displacement formed by topographic relief according to a geometrical relationship of slope distance imaging; correcting the relied displacement obtained by calculation; and correcting other factors influencing SAR imaging by utilizing a traditional SAR image polynomial correcting method. Through the SAR image orthorectification method based on the polynomial, the invention can carry out accurate geometry correction on areas with larger topographic relief; and moreover, the SAR image orthorectification method based on the polynomial is quite easy to implement and can achieve quite high precision. In addition, the method is not only suitable for satellite-borne SAR image orthorectification, but also suitable for airborne SAE image orthorectification.

The invention discloses a method for programming aerophotographic operation of UAV. The method comprises: under the constraint of a real overlapping ratio, performing iterative adjustment on a courseand positions of exposure points to obtain optimized reliable exposure points; generating a flight plan according to the exposure points; sending the flight plan to a flight control system of a UAV via communication; and after the flight control system receives the flight plan, performing an aerophotographic task according to positions of the exposure points in the plan. According to the method, under the constraint of a real overlapping ratio, topographic relief and DEM are taken into consideration, and a converging iterative adjustment algorithm and DEM elevation query technology are designed. Self-adaptive optimal adjustment of the course and positions of exposure points is achieved, the aerophotographic plan is guaranteed and accords with the expectation, and the aerial survey qualityand aerophotographic operation efficiency are improved.

The invention discloses an InSAR residual motion error estimation method and device considering topographic relief, and the method comprises the steps: obtaining a multi-scene SAR image, carrying outpreprocessing, and calculating a topographic phase comprising an InSAR residual motion error; calculating a simulated terrain phase by using the external DEM data; solving the difference between the terrain phase containing the InSAR residual motion error and the simulated terrain phase, carrying out the phase unwrapping of the difference, and taking the unwrapped differential interferometric phase as an observation value; constructing a differential interferometric phase parameterization model related to InSAR interferometric geometric parameters, DEM errors and baseline error components; foreach distance row pixel of each slave image, matching the observation value of the differential interferometric phase with a differential interferometric phase parameterization model to construct anequation to obtain an observation equation; and solving DEM errors and baseline error components in the multi-baseline observation equation set. The invention can accurately estimate the residual motion error.

The invention provides an ortho-rectification method of an automated medium resolution ratio satellite image, and particularly discloses an automation ortho-rectification method based on geometric deformation step resolving through which an ortho-rectification process of an image can be achieved fast and accurately in a region with obvious topography relief. The ortho-rectification method is built on the basis of analysis of the causes of geometric deformation in the imaging process of a remote-sensing image, different geometric deformation types are separated from one another, and step resolving is conducted to distortion caused by a conforming imaging system and distortion caused by topographic relief. Firstly, simulating irregular deformation caused by topographic relief through imaging simulation, wherein the simulate image serves as an automatic registration reference image, then rectifying confirming imaging system distortion with a polynomial model through an automatic registration method, and lastly resolving topographic deflection existing after target image registration. The automation ortho-rectification method based on geometric deformation step resolving is suitable for images shot by different sensors, other topographic deformation recorded in a lookup table is adopted in topography resolving aiming at different sensors, therefore, the computation speed of the whole rectification process is improved greatly, the ortho-rectification of the images is achieved automatically and effectively.

The invention relates to a mean elevation plane triangulated irregular network-based topographic map elevation sparsing algorithm. The sparsing algorithm comprises the following steps of constructinga triangulated irregular network; obtaining a mean elevation plane; setting a threshold; reconstructing the triangulated irregular network; calculating an elevation gradient; screening feature elevation points; obtaining an extreme value of the elevation points; setting a height difference and a distance threshold; and deleting the triangulated irregular network, wherein the triangulated irregularnetwork (TIN) refers to the triangulated irregular network generated by adopting a Delaunay triangulated network. According to the triangulated irregular network-based topographic map elevation pointsparsing algorithm, the elevation points capable of remarkably reflecting topographic relief change are reserved as far as possible, and the topographic change in a sparsing range is better expressed; the elevation points can be averagely distributed in a map, and the local topographic relief condition with remarkable and tiny height difference change is better reflected; and by utilizing methodsof the mean elevation plane, the elevation gradient and the like, the elevation points are screened and sparsed to achieve a reasonable topographic map downsizing effect.

The invention relates to a remote-sensing image geometrical rectification method facing high mountain regions. The remote-sensing image geometrical rectification method aims at solving the problem of nonlinear terrain distortion in remote-sensing images of high mountain regions and adopts the theory of firstly calculating nonlinear geometrical deviation caused by hypsography and then eliminating image linear system errors. The remote-sensing image geometrical rectification method includes: calculating geometrical deviation of a reference image in different heights according to aim image imaging geometrical relationships before using a reference orthoimage to perform geometrical rectification on the aim image to be rectified to generate a height difference calculation sheet, simulating the state of the reference image before terrain rectification, then performing accurate matching on the aim image and the simulated reference image, enabling geometrical deviation of the aim image and the simulated image to be within a standard range, performing back calculation on geometrical deviation of the aim image caused by topographic relief pixel by pixel according to the height difference calculation sheet to generate precise geometrical rectification products of high mountain regions. The remote-sensing image geometrical rectification method mainly solves the problem of nonlinear geometrical distortion of remote-sensing images under rugged terrain conditions.

The invention provides a terrain inversion method of a radar altimeter under an undulating terrain. The terrain inversion method comprises the following steps of: obtaining radar echo beat signals; obtaining a spectrum of the echo beat signals; detecting the leading edge of a beat spectrum; obtaining the Doppler frequency of scattering points corresponding to the leading edge of the beat spectrum;obtaining a Doppler frequency difference; determining whether the Doppler frequency difference is less than the Fourier spectrum resolution; if so, calculating the flight altitude of an aircraft in aflat terrain, and outputting a flight altitude and topographical features of the aircraft; otherwise, extracting multiple sets of super-resolution peaks; pairing super-resolution peaks; retrieving topographic relief features; and outputting the flight altitude and the terrain characteristics of the aircraft. According to the terrain inversion method of the radar altimeter under the undulating terrain, the distances of multiple scattering points and the Doppler frequency are obtained by extracting multiple sets of super-resolution peaks and performing spectrum pairing with the least variance spectral pairing method to invert the terrain relief characteristics. The terrain inversion method can be used for accurate altimetry of low altitude aircraft and terrain undulating characteristics inversion under the undulating terrain.

The invention discloses a terrain correction meter-wave radar altimetry method based on broadcasting automatic mutual monitoring signals, which mainly solves the problem of low precision in angle measurement and measurement in the prior art. Its implementation steps are: 1. Set up meter-wave altimetry radar and broadcast automatic mutual surveillance signal ADS‑B equipment; 2. Collect radar data, ADS‑B data and radar terminal data; 3. Obtain target elevation angle from ADS‑B data and Calculate the terrain search area; 4. Calculate the estimated value of the elevation angle according to the result of 3 and calculate the absolute error of the measured angle; 5. Obtain the value of the terrain parameter from the minimum absolute error of the measured angle, and smooth it, and then do data fitting to establish the terrain parameter Table; 6. Calculate the target elevation angle and height according to the terrain parameter table. The invention can not only compensate the height measuring error caused by terrain undulations, but also compensate the error caused by the height measuring approximate model, improve the angle measuring and measuring high precision, and can be used for three-coordinate positioning and tracking of airspace targets.

The invention relates to a geophysical prospecting two-dimensional electrical sounding data chromatography inversion processing technology and belongs to the technical field of geological exploration. Under the conditions of the same geoelectricity situation and the same polar distance, underground half-space current lines have the consistent distribution form, for a primary electric field, with the change of a supply current, the electric field strength and the current line density at each position under the ground are changed, but the relative ratio of the electric field strengths or the current line densities between points is not changed; and for a secondary electric field, when the excitation reaches a saturated state, attenuation curve characters are approximate. Different resistivity and polarizability properties are effectively distinguished; the theoretical formula derivation is carried out; sounding data layer-by-layer stripping coefficients of adjacent polar distances are solved; an inversion mathematical model is constructed; and the imitative resistivities, polarizabilities and corresponding depths are obtained. Due to the adoption of the chromatography processing, the influence of topographic relief can be inhibited, the resolution is improved, the multiplicity is reduced, the inversion efficiency is greatly improved, and a result is very close to the real geological condition. The geophysical prospecting two-dimensional electrical sounding data chromatography inversion processing technology is mainly applied to geophysical prospecting data processing interpretation in the field of geological exploration such as exploration of mineral resources, engineering geologic structures, exploration of water resources and the like.

The invention discloses a rural domestic sewage treatment device for a region with relatively large topographic relief. The rural domestic sewage treatment device comprises a baffled anoxic and anaerobic reaction ditch, a water-falling oxygenation ditch, an aerobic reaction ditch and a reinforcing wetland, wherein the baffled anoxic and anaerobic reaction ditch comprises a facultative section, an anoxic section and an anaerobic section which are partitioned through water-retaining walls and baffle walls; the water-falling oxygenation ditch is positioned at the downstream of the baffled anoxic and anaerobic reaction ditch; the water-falling oxygenation ditch comprises a water-falling platform, a water-receiving pond and an overflowing weir; the aerobic reaction ditch is positioned in the downstream of the water-falling oxygenation ditch, is communicated with the overflowing weir, and is constructed according to the natural shape of the ditch; the aerobic reaction ditch is provided with a suspended filler and an overflowing wall; the reinforcing wetland adopts a trapezoidal pond-shaped structure, and sequentially comprises an impermeable layer, a gravel cushion layer, a filtering material layer and a soil layer from bottom to top.

The invention discloses a restoration method for coal mine giant collapse pits. The method comprises the steps that whether the coal mine giant collapse pits are collapse pits in a zone with the relative height difference or collapse pits in a zone without the relative height difference are judged according to the topographic relief degree of the coal mine giant collapse pit, the collapse pits in the zone with the relative height difference and the collapse pits in the zone without the relative height difference are subjected to primary backfilling separately; water is sprayed to the giant collapse pits subjected to primary backfilling; and the collapse pits are subjected to secondary backfilling until the backfilling height in the pits is equal to the surface elevation. Through the mode that the collapse pits in the zone with the relative height difference adopts the different backfilling technologies, and solid waste backfilling is conducted in the relative low positions, so that the collapse pit governing efficiency is ensured, the bulldozing operation backfilling is conducted in the relative high positions, ground fractures around the collapse pits are restored, the collapse pits are backfilled, and the restoration effect of the collapse pits is ensured.

The invention relates to the field of seismic data interpretation, and discloses a method for establishing a velocity depth model by using prestack gather data. The method comprises the steps of first, acquiring prestack gather data; second, acquiring a prestack time migration profile, and carrying out comparative interpretation; third, acquiring a comprehensive initial velocity field, and establishing a velocity depth model; fourth, carrying out prestack depth migration on the prestack gather data by combining the velocity depth model to obtain a depth profile, then carrying out comparative interpretation, establishing a depth domain entity model, picking up the residual velocity, further carrying out optimization and iteration on the velocity depth model, and judging whether the imagingis satisfactory or not after multiple iterations; and fifth, analyzing anisotropic parameters, acquiring a prestack depth migration profile, and acquiring a structure map by using the interpretation result. For complex geological structure areas such as server topographic relief, complex hinterland and well developed lateral overthrust fault zones on both flanks, the obtained structure map has small errors, thereby being capable of better guiding the determination of an underground well location target.

The invention discloses a shallow surface soil landslide forecast method and belongs to the technical field of landslide prevention and control engineering. The method comprises the following steps of measuring a slope alpha of a shallow surface soil landslide mass, an area A of the landslide mass, an upper-side slope beta of a landslide, an upper-side area ALu of the landslide, a left-side topographic relief slope theta 1 of the landslide mass, a right-side topographic relief slope theta 2 of the landslide mass, a left-side topographic area AL of the landslide mass and a right-side topographic area AR of the landslide mass; calculating a slope factor S, an upper relief factor U and a two-side topographical factor C; calculating a topographical factor T of the shallow surface soil landslide; calculating a hydrological factor R; calculating a clay index N; measuring a solid coefficient F on site, and calculating a permeation index K; calculating a topographical factor G; and determining a shallow surface soil landslide inducing possibility grade, and performing landslide forecast. According to the method, the effects of three major factors of geology, topography and hydrology causing the landslide are considered at the same time; a measurement and calculation result better conforms to a landslide formation mechanism; the landslide forecast accuracy and efficiency are high; and the disaster prevention applicability is greatly improved.

The invention provides a moon-based earth observation image oriented projected polar coordinate geometry expression method giving consideration to sublunar point movement by analyzing influencing factors of moon-earth relation and geometric distortion of moon-based images and focusing on considering influence effects of a position change of the sublunar point, earth curvature and topographic relief on large-scale hemisphere images. The method is dedicated in solving the geometric distortion problem of the hemisphere images in moon-based earth observation, the original information of the moon-based platform earth observation images can be well maintained, and accurate geocoding can be performed by utilizing a small amount of non-uniform control points.

The invention discloses a remote-sensing-data-based geological mapping method of a lunar-surface impact crater. The method comprises: carrying out data processing on a lunar surface image and topographic data; determining an absolute age of an impact crater; identifying a linear structure of the impact crater; carrying out geological unit division of an impact crater; and with a DEM covering an impact crater region and image data, carrying out identification of feature points corresponding to topographic relief and luminosity changing and connecting the feature points expressing the same unitsand using feature lines as boundary lines of different geological units of the two-dimensional impact crater plane. With the method disclosed by the invention, a high-spatial-resolution impact cratergeological map with integration of the landform and geological information is generated and is used as an important basic map and component for the lunar regional geological map drawing, so that needs of follow-up lunar geological evolution and scientific moon study are met.

The invention discloses a satellite-borne laser distance measuring instrument detection and feedback method and system based on a digital constant false alarm. The satellite-borne laser distance measuring instrument detection and feedback method includes the steps that noise received in a specific area is measured and counted many times to obtain a mean value and a root-mean-square value, according to obtained noise statistical results, the bias voltage of an avalanche diode is adjusted to make the bias voltage of the avalanche diode change along with changes of environments, temperature and the like, and therefore constant control on a false alarm rate is achieved; when topographic parameters change rapidly, the false alarm is controlled to be constant by adjusting an echo pre-authentication threshold value. A feedback algorithm overcomes the defect that according to a satellite-borne laser distance measuring instrument, output noise changes dramatically due to changes of a solar elevation angle; the noise is accumulated and counted many times, so that influence on subsequent measurement of a singular point which is introduced due to large topographic relief is eliminated; cloud layer scattering false echoes are identified and filtered out, through a digital control method, under the condition of meeting system detection probability requirements, the false alarm rate of on-orbit echoes is reduced, and distance values are obtained rapidly and accurately.

The invention relates to a method for monitoring the earth surface deformation based on a sequential InSAR technology. The method comprises steps of SAR data selection, stereo image pair registration,noise filtering processing, interference fringe pattern generation, de-leveling effect execution, phase unwrapping, elevation and elevation coordinate system conversion. The method is especially suitable for high-precision phase unwrapping in areas with large topographic relief, such as a mountainous area and frequent surface deformation, such as an artificial active area; defects caused by inapplicability to the phase continuity assumption and the surface elevation invariance assumption in the conventional algorithm can be overcome; the phase unwrapping accuracy can be improved and thus thesurface elevation deformation inversion accuracy can be enhanced; and a high-precision monitoring way is provided for geological disasters along the transmission line in the region.

The invention provides a PDE-based magnetic measurement data equivalent source reduction-to-the-pole and type conversion method, which comprises the steps: S1, obtaining magnetic field data d0, and establishing a topographic relief curved surface according to topographic height information of an area where the magnetic field data are located; S2, determining a spatial range of mesh generation, andperforming non-uniform multilayer mesh generation; S3, according to the magnetic inclination angle, the magnetic declination angle and the magnetic induction intensity of the geomagnetic field, carrying out PDE three-dimensional inversion calculation with a depth regularization factor, a positive value constraint term and a regularization term on the magnetic field data d0 to obtain a multi-layerequivalent source model of a magnetic anomalous body; and S4, giving different geomagnetic pole parameters, and performing non-linear PDE magnetic field three-dimensional forward modeling calculationby using a multi-layer equivalent source model to obtain one or more of reduction-to-the-pole data, magnetic anomaly total field data, magnetic anomaly component data and magnetic gradient tensor data. The method has the beneficial effects that the underground magnetic anomaly data in a complex environment can be subjected to self-adaptive and high-precision reduction-to-the-pole and data type conversion calculation.

A novel method for evaluating the loss index of railway wireless environment path is use in the railway wireless mobile communication system in which the radio wave propagation environment is rather complex. The method is an improvement of the evaluation method for the loss index of land mobile communication system path and is based on wedge-shaped diffraction model and cubic spline interpolation. The method requires the system to provide enough train measurement reporting samples, the time advance of the samples and the distance image take on a V shape, and topographic relief factor is already known. The scheme can effectively reduces the collection cost of evaluation data and selects appropriate evaluation parameter towards different radio wave propagation environment, thus being benefit to reduce computational complexity.

The invention is a gravitational exploration data processing variable- speed terrain correction method, collecting surface gravity field strength in target region by route gravitational exploration methods, and making constant density terrain correction at the maximum surface layer density, and then adopting a surface layer variable density supplement terrain correction method to eliminate the influences caused by over correction, where the adopted model is a variable density module that simultaneously considers variations along the surface and in the vertical direction of the surface. In a region with larger topographic relief, on the condition that false abnormity still negatively related with terrain after bouguer gravity processed by constant density terrain correction, it can make trend of gravity abnormity consistent with geological trend in the region by variable density supplement terrain correction, reliable, easy to apply and effective.