CN108062907A - The generation method and relevant device of a kind of topographic map - Google Patents
The generation method and relevant device of a kind of topographic map Download PDFInfo
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Abstract
The embodiment of the present application discloses the generation method and relevant device of a kind of topographic map, for improving the accuracy of the topographic map of generation.The embodiment of the present application method includes：Obtain the first topographic map, first topographic map is the topographic map of field survey, first topographic map corresponds to the first engineer's scale, obtain the second topographic map, second topographic map is the topographic map of satellite surveying and mapping, second topographic map corresponds to the second engineer's scale, first engineer's scale is different from second engineer's scale, first topographic map is synthesized by seven-parameter transformation formula and obtains the 3rd topographic map with second topographic map, whether the slope change value for judging the 3rd topographic map synthesis junction is more than threshold value, if, then change the parameter of the seven-parameter transformation formula, and first topographic map is synthesized again and obtains the 4th topographic map with second topographic map.The generation method and relevant device of the topographic map of the embodiment of the present application can improve the accuracy of the topographic map of generation.
Description
Technical field
This application involves wind power generation field more particularly to the generation methods and relevant device of a kind of topographic map.
Background technology
In wind-resources assessment work, the precision of topographic map be determine a material impact of wind-resources accuracy in computation because
Element can use 1 in measure field topographic map：2000 accuracy values, due to the point of high mapping cost, only wind-driven generator
Actual measurement can be carried out at position.
When calculating, it may appear that actually measured topographic map scope cannot meet the situation for calculating requirement, therefore, can use
Satellite surveying and mapping topographic map supplements actual measurement topographic map, is for the main method of topographic map supplement at present, knows by artificial
Otherwise, to 1：10000 satellite maps carry out coordinate conversion, enable matching 1：2000 actual measurement topographic map.
Topographic map has a common boundary after the uncertainty of difference and the coordinate conversion of two kinds of landform map file precision both increases repairing
The distortion at place causes wind-resources analysis large error occur.
The content of the invention
The embodiment of the present application provides a kind of generation method of topographic map, for improving the accuracy of the topographic map of generation.
The generation method of topographic map provided by the embodiments of the present application, including：
Obtain the first topographic map, first topographic map is the topographic map of field survey, and first topographic map corresponds to the
One engineer's scale；
Obtain the second topographic map, second topographic map is the topographic map of satellite surveying and mapping, and second topographic map corresponds to the
Two engineer's scales, first engineer's scale are different from second engineer's scale；
First topographic map is synthesized by seven-parameter transformation formula and obtains the 3rd topographic map with second topographic map；
Whether the slope change value for judging the 3rd topographic map synthesis junction is more than threshold value；
If so, change the parameter of the seven-parameter transformation formula, and first topographic map and described the are synthesized again
Two topographic maps obtain the 4th topographic map.
Optionally, first topographic map is synthesized by calculation formula and obtains the 3rd topographic map bag with second topographic map
It includes：
Second topographic map is converted to according to the seven-parameter transformation formula by the coordinate system identical with the first topographic map, it is described
The parameter of seven-parameter transformation formula includes the translational movement of three coordinates, the rotation angle and scale factor of three reference axis, described
Three coordinates correspond to three different reference axis respectively；
It is replaced in second topographic map with first topographic map and is obtained with the corresponding region of the first topographic map
3rd topographic map.
Optionally, change the parameter of the seven-parameter transformation formula, and synthesize first topographic map and described the again
After two topographic maps obtain the 4th topographic map, the method further includes：
When the slope change value of the 4th topographic map synthesis junction is not less than threshold value, according to the 4th topographic map
Generate landform map file.
Optionally, generating landform map file according to the 4th topographic map includes：
Determine the target area in the 4th topographic map, the target area is for plan the central point of wind field scope
For the center of circle, border circular areas of the 5km as radius is added using the wind turbine distance that distance center point is farthest；
Generate the landform map file of the target area.
Optionally, after generating landform map file according to the 4th topographic map, the method further includes：
Include the roughness landform map file of roughness according to the topographic map file generated.
Optionally, the roughness landform map file of roughness is included according to the topographic map file generated to be included：
The photo of actual landform is identified to obtain topographical features using image recognition technology；
Roughness corresponding with the topographical features is searched from preset roughness meter；
The roughness is added to correspondence position of the topographical features in the landform map file.
Optionally, first engineer's scale is 1:2000, second engineer's scale is 1:10000.
Topographic map generating means provided by the embodiments of the present application, including：
First acquisition unit, for obtaining the first topographic map, first topographic map is the topographic map of field survey, described
First topographic map corresponds to the first engineer's scale；
Second acquisition unit, for obtaining the second topographic map, second topographic map is the topographic map of satellite surveying and mapping, described
Second topographic map corresponds to the second engineer's scale, and first engineer's scale is different from second engineer's scale；
First synthesis unit synthesizes first topographic map and second topographic map for passing through seven-parameter transformation formula
Obtain the 3rd topographic map；
Judging unit, for judging whether the slope change value of the 3rd topographic map synthesis junction is more than threshold value；
Second synthesis unit, for when the slope change value of the 3rd topographic map synthesis junction is more than threshold value, changing
Become the parameter of the seven-parameter transformation formula, and synthesize first topographic map again and obtain the 4th ground with second topographic map
Shape figure.
Optionally, first synthesis unit includes：
Modular converter is identical with the first topographic map for being converted to the second topographic map according to the seven-parameter transformation formula
Coordinate system, the parameter of the seven-parameter transformation formula include the translational movement of three coordinates, three reference axis rotation angle and
Scale factor, three coordinates correspond to three different reference axis respectively；
Replacement module is opposite with first topographic map in second topographic map for being replaced with first topographic map
The region answered obtains the 3rd topographic map.
Optionally, the topographic map generating means further include：
First generation unit, for when the 4th topographic map synthesis junction slope change value not less than threshold value when,
Landform map file is generated according to the 4th topographic map.
Optionally, the topographic map generating means further include：
Second generation unit, for including the roughness landform map file of roughness according to the topographic map file generated.
As can be seen from the above technical solutions, the embodiment of the present application has the following advantages：
In the embodiment of the present application, the first topographic map of field survey and the second topographic map of satellite surveying and mapping, the first ground are obtained
Shape figure engineer's scale corresponding from the second topographic map is different, and synthesizing the first topographic map and the second topographic map by calculation formula obtains the
Three topographic maps, and then whether the slope change value for judging the 3rd topographic map synthesis junction is counted more than threshold value if so, changing
It calculates the parameter of formula and synthesizes the first topographic map again and the second topographic map obtains the 4th topographic map, it can be seen that if first
The 3rd topographic map that topographic map is synthesized with the second topographic map does not meet preset requirement, can change original calculation formula parameter
It recombines the first topographic map and the second topographic map obtains the 4th topographic map, be detected by the topographic map to synthesis and again
Synthesis improves the accuracy of the topographic map ultimately generated.
Description of the drawings
Fig. 1 is the embodiment of the present application mesorelief map generalization method one embodiment schematic diagram；
Fig. 2 is another embodiment schematic diagram of the embodiment of the present application mesorelief map generalization method；
Fig. 3 is one embodiment schematic diagram of the embodiment of the present application mesorelief figure generating means；
Fig. 4 is another embodiment schematic diagram of the embodiment of the present application mesorelief figure generating means；
Fig. 5 is the structure diagram of the embodiment of the present application mesorelief figure generating means.
Specific embodiment
The embodiment of the present application provides the generation method and relevant device of a kind of topographic map, for improving the topographic map of generation
Accuracy.
Term " first ", " second ", " the 3rd " in the description and claims of this application and above-mentioned attached drawing, "
The (if present)s such as four " are the objects for distinguishing similar, without being used to describe specific order or precedence.It should manage
The data that solution so uses can exchange in the appropriate case, so that the embodiments described herein can be with except illustrating herein
Or the order beyond the content of description is implemented.In addition, term " comprising " and " having " and their any deformation, it is intended that
Cover it is non-exclusive include, for example, containing the process of series of steps or unit, method, system, product or equipment need not limit
In those steps or unit for clearly listing, but may include not list clearly or for these processes, method, production
The intrinsic other steps of product or equipment or unit.
Referring to Fig. 1, one embodiment of the embodiment of the present application mesorelief map generalization method includes：
101st, the first topographic map is obtained.
In the embodiment of the present application, the first topographic map of field survey is obtained, it is to be understood that the first topographic map corresponds to the
The ratio between length length corresponding on actual landform on one engineer's scale, i.e. the first topographic map, which can
Think 1:2000, in addition or other ratios, such as 1:1000, it is specifically subject to practical application, does not limit herein
It is fixed.
It should be noted that if the size of the first topographic map covers the wind field scope of actual needs assessment, then can
Directly first topographic map to be used to generate corresponding landform map file.
102nd, the second topographic map is obtained.
In the embodiment of the present application, the second topographic map of satellite surveying and mapping can be obtained, it is to be understood that the second topographic map pair
The second engineer's scale is answered, which can be 1:10000, in addition or other ratios, such as 1:25000,
It is specifically subject to practical application, does not limit herein.
It should be noted that corresponding first engineer's scale of the first topographic map the second engineer's scale corresponding with the second topographic map is not
Together, the precision of the first topographic map is higher than the second topographic map, and the coverage of the second topographic map is more than the covering of the first topographic map
Scope.
It should be noted that there is no fixed sequential relationship, Ke Yixian in the present embodiment between step 101 and step 102
Step 101 is performed, step 102 can also be first carried out or may be performed simultaneously step 101 and step 102, specifically herein not
It limits.
103rd, the first topographic map is synthesized by seven-parameter transformation formula and the second topographic map obtains the 3rd topographic map.
It, can be public by seven-parameter transformation after obtaining the first topographic map and the second topographic map in the embodiment of the present application
First topographic map and the second topographic map are synthesized to obtain the 3rd topographic map by formula.
It is understood that since the coverage of the second topographic map is more than the coverage of the first topographic map, the first ground
The split of shape figure and the second topographic map can regard supplement of second topographic map to the first topographic map as.
Whether the slope change value for the 104th, judging the 3rd topographic map synthesis intersection is more than threshold value, if so, performing step
105。
In the embodiment of the present application, synthesis needs to judge the 3rd topographic map synthesis intersection after having obtained the 3rd topographic map
Whether slope change value is more than threshold value, it is to be understood that the synthesis intersection of the 3rd topographic map i.e. the first topographic map and second
The position of topographic map split.
It is understood that the 3rd topographic map synthesize intersection synthesis due to it is possible that slope change not from
Right situation, for example, the synthesis junction gradient is by 10% steep increasing to 30%, then slope change value is 20%, if setting
Threshold value be 10%, then slope change value has been more than just threshold value.
It should be noted that practical application is subject in the setting of threshold value, do not limit herein specifically, furthermore it is also possible to adopt
Whether be more than threshold value, instead of sentencing to slope change value if being changed with the gradient second order value for judging the 3rd topographic map synthesis intersection
It is disconnected.
105th, change the parameter of seven-parameter transformation formula, and synthesize the first topographic map again and the second topographic map obtains the 4th
Topographic map.
In the embodiment of the present application, when the slope change value of the 3rd topographic map synthesis junction is more than threshold value, that is, illustrate the
Three topographic maps do not meet quality testing requirement, it is necessary to change the parameter of seven-parameter transformation formula, and according to seven after replacement parameter
Parameter Switch formula synthesizes the first topographic map and the second topographic map obtains the 4th topographic map.
It is understood that the 4th topographic map synthesized again be also required to according to the process described in step 104 into
Row quality testing changes the parameter of seven-parameter transformation formula again if also undesirable, continues synthesis and obtains new landform
Figure, until the topographic map ultimately generated meets the requirement of quality testing.
In the embodiment of the present application, the first topographic map of field survey and the second topographic map of satellite surveying and mapping, the first ground are obtained
Shape figure engineer's scale corresponding from the second topographic map is different, and synthesizing the first topographic map and the second topographic map by calculation formula obtains the
Three topographic maps, and then whether the slope change value for judging the 3rd topographic map synthesis junction is counted more than threshold value if so, changing
It calculates the parameter of formula and synthesizes the first topographic map again and the second topographic map obtains the 4th topographic map, it can be seen that if first
The 3rd topographic map that topographic map is synthesized with the second topographic map does not meet preset requirement, can change original calculation formula parameter
It recombines the first topographic map and the second topographic map obtains the 4th topographic map, be detected by the topographic map to synthesis and again
Synthesis improves the accuracy of the topographic map ultimately generated.
For ease of understanding, the is obtained with reference to synthesizing the first topographic map and the second topographic map by seven-parameter transformation formula
The embodiment of the present application is described in detail in the specific embodiment of three topographic maps：
Referring to Fig. 2, another embodiment of the embodiment of the present application mesorelief map generalization method includes：
201st, the first topographic map is obtained.
202nd, the second topographic map is obtained.
In the embodiment of the present application, step 201 to step 202 is similar to step 102 with step 101 in embodiment illustrated in fig. 1,
It is specific that details are not described herein again.
203rd, the second topographic map is converted to according to seven-parameter transformation formula by the coordinate system identical with the first topographic map.
It, can be according to seven-parameter transformation after having got the first topographic map and the second topographic map in the embodiment of the present application
Second topographic map is converted to the coordinate system identical with the first topographic map by formula, and specifically, seven-parameter transformation formula includes three
The rotation angle (△ α, △ β, △ γ) and scale factor k of the translational movement (△ X, △ Y, △ Z) of coordinate, three reference axis, wherein,
Coordinate difference between the coordinate origin of the translational movement expression two spaces coordinate system of three coordinates, the rotation angle of three reference axis
It represents to rotate three reference axis specified angles in order, three coordinate overlapping of axles of two spaces rectangular coordinate system can be made one
It rises, scale factor represents the lenth ratio of same section of straight line in two spaces coordinate system, is used to implement the ratio conversion of scale.
It should be noted that can also be converted to and the second topographic map phase with topographic map according to seven-parameter transformation formula
Same coordinate system.
204th, replaced with the first topographic map in the second topographic map and obtain the described 3rd with the corresponding region of the first topographic map
Topographic map.
In the embodiment of the present application, after the first topographic map and the second topographic map are transformed into identical coordinate system, with the first
Shape figure is replaced in the second topographic map and obtains the 3rd topographic map with the corresponding region of the first topographic map, it is to be understood that
The coverage of second topographic map is more than the coverage of the first topographic map, is determined and the first topographic map pair on the second topographic map
The region of the region answered, i.e. the first topographic map actual geographic position identical with the second topographic map instruction is replaced with the first topographic map
I.e. available 3rd topographic map in the region on second topographic map.
Whether the slope change value for the 205th, judging the 3rd topographic map synthesis intersection is more than threshold value, if so, performing step
206。
206th, change the parameter of seven-parameter transformation formula, and synthesize the first topographic map again and the second topographic map obtains the 4th
Topographic map.
In the embodiment of the present application, step 205 to step 206 and the step 104 in embodiment illustrated in fig. 1 to step 105 class
It is seemingly, specific that details are not described herein again.
207th, when the slope change value of the 4th topographic map synthesis junction is not less than threshold value, according to the 4th topographic map
Generate landform map file.
In the embodiment of the present application, synthesis obtains the 4th topographic map meeting again after the parameter for changing seven-parameter transformation formula
The operation in step 205 is performed again, when the slope change value of the 4th topographic map synthesis junction is not less than threshold value, illustrates the
Four topographic maps meet the requirement of quality testing, and then can generate landform map file according to the 4th topographic map.
It should be noted that the landform map file actually used need not cover as so big model such as the 4th topographic map
It encloses, target area can be determined from the 4th topographic map in generation landform map file, and generate the landform map file of target area, have
Body, which is to plan the central point of wind field scope as the center of circle, is added again with the wind turbine distance that distance center point is farthest
Upper 5km is the border circular areas of radius, it should be appreciated that target area can also use other dividing modes, for example, the mesh
It can also be using the central point for planning wind field scope as the center of circle to mark region, added with the wind turbine distance that distance center point is farthest
10km is the border circular areas of radius, and specific dividing mode is subject to practical application, does not limit herein.
It should be noted that the landform map file is the file of map forms.
208th, the roughness landform map file of roughness is included according to the generation of landform map file.
In the embodiment of the present application, into after landform map file, can according to landform map file further generation include it is coarse
The roughness landform map file of degree specifically, can be identified to obtain using image recognition technology to the photo of actual landform
Topographical features, then roughness corresponding with the topographical features is searched from preset roughness meter, further roughness is added
Correspondence position of the topographical features in landform map file is added to, for example, using image recognition technology in the photo of actual landform
Three kinds of level land, lake and the woods topographical features are recognized, can determine that three kinds of topographical features are corresponding thick by roughness meter
Rugosity value finds the corresponding position of three kinds of topographical features in landform map file afterwards, then will be predetermined coarse
Angle value is added to corresponding position in landform map file.
In the embodiment of the present application, after synthesis obtains satisfactory topographic map and generates corresponding landform map file,
Corresponding position in the landform map file adds roughness, this to determine that the mode of roughness improves using picture recognition technology
The efficiency of roughness in definite topographic map.
The embodiment of the present application mesorelief map generalization method is described above, below in the embodiment of the present application
Shape figure generating means are described：
Referring to Fig. 3, one embodiment of the embodiment of the present application mesorelief figure generating means includes：
First acquisition unit 301, for obtaining the first topographic map, first topographic map is the topographic map of field survey,
First topographic map corresponds to the first engineer's scale；
Second acquisition unit 302, for obtaining the second topographic map, second topographic map is the topographic map of satellite surveying and mapping,
Second topographic map corresponds to the second engineer's scale, and first engineer's scale is different from second engineer's scale；
First synthesis unit 303 synthesizes first topographic map and second ground for passing through seven-parameter transformation formula
Shape figure obtains the 3rd topographic map；
Judging unit 304, for judging whether the slope change value of the 3rd topographic map synthesis junction is more than threshold value；
Second synthesis unit 305, for when the 3rd topographic map synthesis junction slope change value be more than threshold value when,
Change the parameter of the seven-parameter transformation formula, and synthesize first topographic map again and obtain the 4th with second topographic map
Topographic map.
In the embodiment of the present application, first acquisition unit 301 obtains the first topographic map of field survey, second acquisition unit
302 obtain the second topographic map of satellite surveying and mapping, and the first topographic map engineer's scale corresponding from the second topographic map is different, and the first synthesis is single
Member 303 synthesizes the first topographic map by calculation formula and the second topographic map obtains the 3rd topographic map, and then judging unit 304 judges
Whether the slope change value of the 3rd topographic map synthesis junction is more than threshold value, if so, the second synthesis unit 305 then changes calculating
The parameter of formula simultaneously synthesizes the first topographic map and the second topographic map obtains the 4th topographic map again, it can be seen that if the first ground
The 3rd topographic map that shape figure is synthesized with the second topographic map does not meet preset requirement, can change original calculation formula parameter weight
The first topographic map of new synthesis and the second topographic map obtain the 4th topographic map, are detected by the topographic map to synthesis and closed again
Into improving the accuracy of the topographic map ultimately generated.
For ease of understanding, describe in detail below to the topographic map generating means in the embodiment of the present application, refer to figure
4, another embodiment of the embodiment of the present application mesorelief figure generating means includes：
First acquisition unit 401, for obtaining the first topographic map, first topographic map is the topographic map of field survey,
First topographic map corresponds to the first engineer's scale；
Second acquisition unit 402, for obtaining the second topographic map, second topographic map is the topographic map of satellite surveying and mapping,
Second topographic map corresponds to the second engineer's scale, and first engineer's scale is different from second engineer's scale；
First synthesis unit 403 synthesizes first topographic map and second ground for passing through seven-parameter transformation formula
Shape figure obtains the 3rd topographic map；
Judging unit 404, for judging whether the slope change value of the 3rd topographic map synthesis junction is more than threshold value；
Second synthesis unit 405, for when the 3rd topographic map synthesis junction slope change value be more than threshold value when,
Change the parameter of the seven-parameter transformation formula, and synthesize first topographic map again and obtain the 4th with second topographic map
Topographic map.
In the embodiment of the present application, the first synthesis unit 403 further comprises：
Modular converter 4031, for the second topographic map to be converted to and the first topographic map according to the seven-parameter transformation formula
Identical coordinate system, the parameter of the seven-parameter transformation formula include the translational movement of three coordinates, the anglec of rotation of three reference axis
Degree and scale factor, three coordinates correspond to three different reference axis respectively；
Replacement module 4032, for first topographic map replace in second topographic map with first topographic map
Corresponding region obtains the 3rd topographic map.
In the embodiment of the present application, topographic map generating means further include：
First generation unit 406 synthesizes the slope change value of junction not less than threshold value for working as the 4th topographic map
When, landform map file is generated according to the 4th topographic map.
Second generation unit 407, the roughness landform picture and text for including roughness according to the topographic map file generated
Part.
The topographic map generating means in the embodiment of the present application are described in the angle of slave module functional entity above, under
Face is described the topographic map generating means in the embodiment of the present application from the angle of hardware handles, referring to Fig. 5, the application is real
Another embodiment of topographic map generating means applied in example includes：
Processor 501 and memory 502, above-mentioned first acquisition unit, second acquisition unit, the first synthesis unit, judgement
Unit and the second synthesis unit etc. in memory, are performed stored in memory as program unit storage by processor
Above procedure unit realizes corresponding function.
Comprising kernel in processor 501, gone in memory to transfer corresponding program unit by kernel.Kernel can set one
It is a or more, user data is updated by adjusting kernel parameter.
Memory 502 may include the volatile memory in computer-readable medium, random access memory (RAM)
And/or the forms such as Nonvolatile memory, such as read-only memory (ROM) or flash memory (flash RAM), memory includes at least one
Storage chip.
The embodiment of the present application provides a kind of storage medium, is stored thereon with program, real when which is executed by processor
The existing survey wind data processing method.
The embodiment of the present application provides a kind of processor, and the processor is used for operation program, wherein, described program operation
Wind data processing method is surveyed described in Shi Zhihang.
The embodiment of the present application provides a kind of equipment, and equipment includes processor, memory and storage on a memory and can
The program run on a processor, processor perform the concrete operations in embodiment as depicted in figs. 1 and 2.
It is apparent to those skilled in the art that for convenience and simplicity of description, the system of foregoing description,
The specific work process of device and unit may be referred to the corresponding process in preceding method embodiment, and details are not described herein.
In several embodiments provided herein, it should be understood that disclosed system, apparatus and method can be with
It realizes by another way.For example, the apparatus embodiments described above are merely exemplary, for example, the unit
Division is only a kind of division of logic function, can there is other dividing mode, such as multiple units or component in actual implementation
It may be combined or can be integrated into another system or some features can be ignored or does not perform.It is another, it is shown or
The mutual coupling, direct-coupling or communication connection discussed can be the indirect coupling by some interfaces, device or unit
It closes or communicates to connect, can be electrical, machinery or other forms.
The unit illustrated as separating component may or may not be physically separate, be shown as unit
The component shown may or may not be physical location, you can be located at a place or can also be distributed to multiple
In network element.Some or all of unit therein can be selected to realize the mesh of this embodiment scheme according to the actual needs
's.
In addition, each functional unit in each embodiment of the application can be integrated in a processing unit, it can also
That unit is individually physically present, can also two or more units integrate in a unit.Above-mentioned integrated list
The form that hardware had both may be employed in member is realized, can also be realized in the form of SFU software functional unit.
If the integrated unit is realized in the form of SFU software functional unit and is independent production marketing or use
When, it can be stored in a computer read/write memory medium.Based on such understanding, the technical solution of the application is substantially
The part to contribute in other words to the prior art or all or part of the technical solution can be in the form of software products
It embodies, which is stored in a storage medium, is used including some instructions so that a computer
Equipment (can be personal computer, server or the network equipment etc.) performs the complete of each embodiment the method for the application
Portion or part steps.And foregoing storage medium includes：USB flash disk, mobile hard disk, read-only memory (ROM, read-only
Memory), random access memory (RAM, random access memory), magnetic disc or CD etc. are various can store journey
The medium of sequence code.
The above, above example are only to illustrate the technical solution of the application, rather than its limitations；Although with reference to before
Embodiment is stated the application is described in detail, it will be understood by those of ordinary skill in the art that：It still can be to preceding
The technical solution recorded in each embodiment is stated to modify or carry out equivalent substitution to which part technical characteristic；And these
Modification is replaced, and the essence of appropriate technical solution is not made to depart from the spirit and scope of each embodiment technical solution of the application.
Claims (10)
1. a kind of generation method of topographic map, which is characterized in that including：
The first topographic map is obtained, first topographic map is the topographic map of field survey, and first topographic map corresponds to the first ratio
Example ruler；
The second topographic map is obtained, second topographic map is the topographic map of satellite surveying and mapping, and second topographic map corresponds to the second ratio
Example ruler, first engineer's scale are different from second engineer's scale；
First topographic map is synthesized by seven-parameter transformation formula and obtains the 3rd topographic map with second topographic map；
Whether the slope change value for judging the 3rd topographic map synthesis junction is more than threshold value；
If so, changing the parameter of the seven-parameter transformation formula, and first topographic map and second ground are synthesized again
Shape figure obtains the 4th topographic map.
2. according to the method described in claim 1, it is characterized in that, first topographic map is synthesized by seven-parameter transformation formula
Obtaining the 3rd topographic map with second topographic map includes：
Second topographic map is converted to according to the seven-parameter transformation formula by the coordinate system identical with the first topographic map, seven ginseng
The parameter of number conversion formulas includes the translational movements of three coordinates, the rotation angle and scale factor of three reference axis, described three
Coordinate corresponds to three different reference axis respectively；
It is described with being obtained in first topographic map replacement, second topographic map with the corresponding region of the first topographic map
3rd topographic map.
3. method according to claim 1 or 2, which is characterized in that change the parameter of the seven-parameter transformation formula, and again
After secondary synthesis first topographic map obtains the 4th topographic map with second topographic map, the method further includes：
When the slope change value of the 4th topographic map synthesis junction is not less than threshold value, generated according to the 4th topographic map
Landform map file.
4. according to the method described in claim 3, it is characterized in that, landform map file bag is generated according to the 4th topographic map
It includes：
Determine the target area in the 4th topographic map, the target area is to plan the central point of wind field scope to be round
The heart, using the farthest wind turbine distance of distance center point along with 5km is the border circular areas of radius；
Generate the landform map file of the target area.
5. according to the method described in claim 3, it is characterized in that, according to the 4th topographic map generate landform map file it
Afterwards, the method further includes：
Include the roughness landform map file of roughness according to the topographic map file generated.
6. according to the method described in claim 5, it is characterized in that, the thick of roughness is included according to the topographic map file generated
Rugosity landform map file includes：
The photo of actual landform is identified to obtain topographical features using image recognition technology；
Roughness corresponding with the topographical features is searched from preset roughness meter；
The roughness is added to correspondence position of the topographical features in the landform map file.
7. a kind of topographic map generating means, including：
First acquisition unit, for obtaining the first topographic map, first topographic map is the topographic map of field survey, described first
Topographic map corresponds to the first engineer's scale；
Second acquisition unit, for obtaining the second topographic map, second topographic map is the topographic map of satellite surveying and mapping, described second
Topographic map corresponds to the second engineer's scale, and first engineer's scale is different from second engineer's scale；
First synthesis unit obtains for passing through seven-parameter transformation formula synthesis first topographic map with second topographic map
3rd topographic map；
Judging unit, for judging whether the slope change value of the 3rd topographic map synthesis junction is more than threshold value；
Second synthesis unit, for when the slope change value of the 3rd topographic map synthesis junction is more than threshold value, changing institute
The parameter of seven-parameter transformation formula is stated, and synthesizes first topographic map again and obtains the 4th landform with second topographic map
Figure.
8. topographic map generating means according to claim 7, which is characterized in that first synthesis unit includes：
Modular converter, for the second topographic map to be converted to the seat identical with the first topographic map according to the seven-parameter transformation formula
Mark system, the parameter of the seven-parameter transformation formula include the translational movement of three coordinates, the rotation angle and scale of three reference axis
The factor, three coordinates correspond to three different reference axis respectively；
Replacement module, it is corresponding with first topographic map in second topographic map for being replaced with first topographic map
Region obtains the 3rd topographic map.
9. the topographic map generating means according to claim 7 or 8, which is characterized in that the topographic map generating means are also wrapped
It includes：
First generation unit, for when the 4th topographic map synthesis junction slope change value not less than threshold value when, according to
4th topographic map generates landform map file.
10. topographic map generating means according to claim 9, which is characterized in that the topographic map generating means further include：
Second generation unit, for including the roughness landform map file of roughness according to the topographic map file generated.
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