CN104462860B - The processing method and processing unit of location data - Google Patents
The processing method and processing unit of location data Download PDFInfo
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- CN104462860B CN104462860B CN201410855482.9A CN201410855482A CN104462860B CN 104462860 B CN104462860 B CN 104462860B CN 201410855482 A CN201410855482 A CN 201410855482A CN 104462860 B CN104462860 B CN 104462860B
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Abstract
The invention provides a kind of processing method of location data and processing unit, wherein, the processing method of location data, including：The region navigated as needed, is selected as the specified coordinate point of the origin of coordinates, and establish coordinate system based on the specified coordinate point；Obtain the location data for specified object, the coordinate points that the location data is made up of longitude and latitude data；The point on the basis of the specified coordinate point, location data is normalized, to obtain the coordinate after normalized；It is rounded coordinate by the Coordinate Conversion after the normalized；According to the corresponding relation between the actual physical location of the location data and the specified object, the corresponding relation established between the rounded coordinate and the actual physical location.By technical scheme, the redundancy section in location data can be deleted, reduces the processing to location data and storage difficulty, while reduces the data processing amount of processor, reduces the processing load of processor.
Description
Technical field
The present invention relates to technical field of data processing, in particular to the processing method and one kind of a kind of location data
The processing unit of location data.
Background technology
The application such as the existing navigation based on GPS, tracking, monitoring be all based on the latitude and longitude information of target position come
Complete positioning to target, and by GPS gathers to target latitude and longitude information and the latitude and longitude informations of destination locations carry out pair
Than judging the moving direction of target.
The division of longitude and latitude is divided using the whole earth as object, and the scope of people's activity mostly exists in daily life
In the range of tens kilometers, the girth of this and the earth compare be a very little data, react in the change of longitude and latitude and
The numerical value of one very little, usually data behind longitude and latitude decimal point.Such as the Zhou Changwei 140192Km, 1Km of the earth away from
(1/140192) × 360, about 0.00257 degree are turned to from change of the reaction on longitude.And the required precision to navigation now
Reaching within 2 meters, it will be a smaller value that 2 meters of distance, which is reacted in the change of longitude and latitude, so GPS outputs
Longitude and latitude information real " useful value " is several behind decimal point, and it is all redundancy that other information are most of.
For data record and transmission of angle, the digit shared by the expression of floating number is typically twice of integer, increase
The difficulty of storage, also increase the data volume of transmission；For the angle of data processing, processor to be processed is floating number
According to the intractability of floating data is significantly larger than the intractability of integer, so directly carrying out positioning increase with longitude and latitude degrees of data
The difficulty of data processing.
Therefore, the processing to location data and storage difficulty how are reduced, reduces the redundancy in location data,
Turn into technical problem urgently to be resolved hurrily to reduce the processing load of processing.
The content of the invention
The present invention is based at least one above-mentioned technical problem, it is proposed that a kind of processing scheme of new location data,
The redundancy section in location data can be deleted, reduces the processing to location data and storage difficulty, while reduce processing
The data processing amount of device, reduce the processing load of processor.
In view of this, the present invention proposes a kind of processing method of location data, including：The area navigated as needed
Domain, the specified coordinate point of the origin of coordinates is selected as, and coordinate system is established based on the specified coordinate point；Obtain for specifying thing
The location data of body, the coordinate points that the location data is made up of longitude and latitude data；The point on the basis of the specified coordinate point,
The location data is normalized, to obtain the coordinate after normalized；By the seat after the normalized
Mark is converted to rounded coordinate；According to the corresponding relation between the actual physical location of the location data and the specified object,
The corresponding relation established between the rounded coordinate and the actual physical location.
In the technical scheme, by the point using on the basis of the specified coordinate point as the origin of coordinates, location data is carried out
Normalized, enabling delete the redundancy section in location data, reduce data transfer and the difficulty of processing；And pass through
It is rounded coordinate by the Coordinate Conversion after normalized, reduces the data processing amount of processor, reduces the place of processor
Reason burden；Meanwhile by establishing the corresponding relation between rounded coordinate and actual physical location, also allow for after processing
Rounded coordinate carried out with the actual physical location of above-mentioned specified object it is corresponding, to determine above-mentioned finger according to the rounded coordinate after processing
The actual physical location of earnest body.Wherein, location data can be the location data of the specified object got in real time, can also
It is the location data stored in database,, can when specified object is multiple objects such as all location datas of some object
So that the location data of specified object to be regarded as to all location datas in coordinate system, i.e. the location datas of multiple objects occupies whole
Individual coordinate system.
In the above-mentioned technical solutions, it is preferable that the step of being selected as the specified coordinate point of the origin of coordinates is specifically wrapped
Include：The coordinate points outside the region or the coordinate points on the edge in the region are selected as the specified coordinate point.
In the technical scheme, by select the coordinate points outside above-mentioned zone or the coordinate points on the edge in region be used as it is upper
State specified coordinate point so that the coordinate data got is all positive number, and then can facilitate the further processing to coordinate data.
In the above-mentioned technical solutions, it is preferable that the step of by the Coordinate Conversion after the normalized being rounded coordinate
Including：Logarithm operation processing is carried out to the coordinate after the normalized, to obtain the rounded coordinate.
In the technical scheme, by carrying out logarithm operation processing to the coordinate after normalized, enabling will be floating
Points are converted to integer, reduce the processing load of processor.
In the above-mentioned technical solutions, it is preferable that the coordinate after to the normalized carries out logarithm operation and handles it
Also include afterwards：Select translation coefficient, using by the negative Coordinate Conversion in the rounded coordinate as positive number coordinate.
In the above-mentioned technical solutions, it is preferable that use below equation by the Coordinate Conversion after the normalized for institute
State rounded coordinate：
Q=C+ [k1×logα(x1-x0),k2×logβ(y1-y0)]；Wherein, (x1-x0) represent the horizontal stroke after normalized
Coordinate, (y1-y0) ordinate after normalized is represented, when α and β represent that abscissa and ordinate carry out logarithm operation respectively
The truth of a matter, K1And K2Proportionality coefficient is represented, C represents translation coefficient, and Q represents the rounded coordinate.
In the technical scheme, x0It is the abscissa of above-mentioned specified coordinate point, y0It is the ordinate of above-mentioned specified coordinate point,
x1It is the abscissa of the location data got, y1It is the ordinate of the location data got.
According to another aspect of the present invention, it is also proposed that a kind of processing unit of location data, including：Establishment of coordinate system list
Member, for the region navigated as needed, the specified coordinate point of the origin of coordinates is selected as, and is based on the specified coordinate
Point establishes coordinate system；Acquiring unit, for obtaining the location data for specified object, the location data is by the longitude and latitude number of degrees
According to the coordinate points of composition；First processing units, for the point on the basis of the specified coordinate point, the location data is returned
One change is handled, to obtain the coordinate after normalized；Second processing unit, for the coordinate after the normalized to be turned
It is changed to rounded coordinate；Unit is established, for according between the actual physical location of the location data and the specified object
Corresponding relation, the corresponding relation established between the rounded coordinate and the actual physical location.
In the technical scheme, by the point using on the basis of the specified coordinate point as the origin of coordinates, location data is carried out
Normalized, enabling delete the redundancy section in location data, reduce data transfer and the difficulty of processing；And pass through
It is rounded coordinate by the Coordinate Conversion after normalized, reduces the data processing amount of processor, reduces the place of processor
Reason burden；Meanwhile by establishing the corresponding relation between rounded coordinate and actual physical location, also allow for after processing
Rounded coordinate carried out with the actual physical location of above-mentioned specified object it is corresponding, to determine above-mentioned finger according to the rounded coordinate after processing
The actual physical location of earnest body.Wherein, location data can be the location data of the specified object got in real time, can also
It is the location data stored in database,, can when specified object is multiple objects such as all location datas of some object
So that the location data of specified object to be regarded as to all location datas in coordinate system, i.e. the location datas of multiple objects occupies whole
Individual coordinate system.
In the above-mentioned technical solutions, it is preferable that the establishment of coordinate system unit is specifically used for：Select the seat outside the region
Coordinate points on punctuate or the edge in the region are as the specified coordinate point.
In the technical scheme, by select the coordinate points outside above-mentioned zone or the coordinate points on the edge in region be used as it is upper
State specified coordinate point so that the coordinate data got is all positive number, and then can facilitate the further processing to coordinate data.
In the above-mentioned technical solutions, it is preferable that the second processing unit is specifically used for：After the normalized
Coordinate carries out logarithm operation processing, to obtain the rounded coordinate.
In the technical scheme, by carrying out logarithm operation processing to the coordinate after normalized, enabling will be floating
Points are converted to integer, reduce the processing load of processor.
In the above-mentioned technical solutions, it is preferable that the second processing unit is additionally operable to：After to the normalized
Coordinate carry out logarithm operation processing after, select translation coefficient, using by the negative Coordinate Conversion in the rounded coordinate as positive number
Coordinate.
In the above-mentioned technical solutions, it is preferable that the second processing unit uses below equation by the normalized
Coordinate Conversion afterwards is the rounded coordinate：
Q=C+ [k1×logα(x1-x0),k2×logβ(y1-y0)]；Wherein, (x1-x0) represent the horizontal stroke after normalized
Coordinate, (y1-y0) ordinate after normalized is represented, when α and β represent that abscissa and ordinate carry out logarithm operation respectively
The truth of a matter, K1And K2Proportionality coefficient is represented, C represents translation coefficient, and Q represents the rounded coordinate.
In the technical scheme, x0It is the abscissa of above-mentioned specified coordinate point, y0It is the ordinate of above-mentioned specified coordinate point,
x1It is the abscissa of the location data got, y1It is the ordinate of the location data got.
By above technical scheme, the redundancy section in location data can be deleted, reduces the processing to location data
With storage difficulty, while reduce the data processing amount of processor, reduce the processing load of processor.
Brief description of the drawings
Fig. 1 shows the schematic flow diagram of the processing method of location data according to an embodiment of the invention；
Fig. 2 shows the schematic block diagram of the processing unit of location data according to an embodiment of the invention；
Fig. 3 shows the corresponding relation schematic diagram of coordinate and physical location according to an embodiment of the invention.
Embodiment
It is below in conjunction with the accompanying drawings and specific real in order to be more clearly understood that the above objects, features and advantages of the present invention
Mode is applied the present invention is further described in detail.It should be noted that in the case where not conflicting, the implementation of the application
Feature in example and embodiment can be mutually combined.
Many details are elaborated in the following description to facilitate a thorough understanding of the present invention, still, the present invention may be used also
To be different from other modes described here using other to implement, therefore, protection scope of the present invention is not by described below
Specific embodiment limitation.
Fig. 1 shows the schematic flow diagram of the processing method of location data according to an embodiment of the invention.
As shown in figure 1, the processing method of location data according to an embodiment of the invention, including：Step 102, according to need
The region navigated, the specified coordinate point of the origin of coordinates is selected as, and coordinate system is established based on the specified coordinate point；
Step 104, the location data for specified object, the coordinate points that the location data is made up of longitude and latitude data are obtained；Step
Rapid 106, the point on the basis of the specified coordinate point, the location data is normalized, to obtain normalized
Coordinate afterwards；Step 108, it is rounded coordinate by the Coordinate Conversion after the normalized；Step 110, according to the positioning
Corresponding relation between the actual physical location of data and the specified object, establishes the rounded coordinate and the actual physics
Corresponding relation between position.
In the technical scheme, by the point using on the basis of the specified coordinate point as the origin of coordinates, location data is carried out
Normalized, enabling delete the redundancy section in location data, reduce data transfer and the difficulty of processing；And pass through
It is rounded coordinate by the Coordinate Conversion after normalized, reduces the data processing amount of processor, reduces the place of processor
Reason burden；Meanwhile by establishing the corresponding relation between rounded coordinate and actual physical location, also allow for after processing
Rounded coordinate carried out with the actual physical location of above-mentioned specified object it is corresponding, to determine above-mentioned finger according to the rounded coordinate after processing
The actual physical location of earnest body.Wherein, location data can be the location data of the specified object got in real time, can also
It is the location data stored in database,, can when specified object is multiple objects such as all location datas of some object
So that the location data of specified object to be regarded as to all location datas in coordinate system, i.e. the location datas of multiple objects occupies whole
Individual coordinate system.
In the above-mentioned technical solutions, it is preferable that the step of being selected as the specified coordinate point of the origin of coordinates is specifically wrapped
Include：The coordinate points outside the region or the coordinate points on the edge in the region are selected as the specified coordinate point.
In the technical scheme, by select the coordinate points outside above-mentioned zone or the coordinate points on the edge in region be used as it is upper
State specified coordinate point so that the coordinate data got is all positive number, and then can facilitate the further processing to coordinate data.
In the above-mentioned technical solutions, it is preferable that the step of by the Coordinate Conversion after the normalized being rounded coordinate
Including：Logarithm operation processing is carried out to the coordinate after the normalized, to obtain the rounded coordinate.
In the technical scheme, by carrying out logarithm operation processing to the coordinate after normalized, enabling will be floating
Points are converted to integer, reduce the processing load of processor.
In the above-mentioned technical solutions, it is preferable that the coordinate after to the normalized carries out logarithm operation and handles it
Also include afterwards：Select translation coefficient, using by the negative Coordinate Conversion in the rounded coordinate as positive number coordinate.
In the above-mentioned technical solutions, it is preferable that use below equation by the Coordinate Conversion after the normalized for institute
State rounded coordinate：
Q=C+ [k1×logα(x1-x0),k2×logβ(y1-y0)]；Wherein, (x1-x0) represent the horizontal stroke after normalized
Coordinate, (y1-y0) ordinate after normalized is represented, when α and β represent that abscissa and ordinate carry out logarithm operation respectively
The truth of a matter, K1And K2Proportionality coefficient is represented, C represents translation coefficient, and Q represents the rounded coordinate.
In the technical scheme, x0It is the abscissa of above-mentioned specified coordinate point, y0It is the ordinate of above-mentioned specified coordinate point,
x1It is the abscissa of the location data got, y1It is the ordinate of the location data got.
Fig. 2 shows the schematic block diagram of the processing unit of location data according to an embodiment of the invention.
As shown in Fig. 2 the processing unit 200 of location data according to an embodiment of the invention, including：Establishment of coordinate system list
Member 202, acquiring unit 204, first processing units 206, second processing unit 208 and establish unit 210.
Wherein, establishment of coordinate system unit 202, for the region navigated as needed, it is selected as the origin of coordinates
Specified coordinate point, and coordinate system is established based on the specified coordinate point.
Acquiring unit 204, for obtaining the location data for specified object, the location data is by longitude and latitude degrees of data
The coordinate points of composition.
First processing units 206, for the point on the basis of the specified coordinate point, the location data is normalized
Processing, to obtain the coordinate after normalized.
Second processing unit 208, for being rounded coordinate by the Coordinate Conversion after the normalized.
Unit 210 is established, for according to pair between the actual physical location of the location data and the specified object
It should be related to, the corresponding relation established between the rounded coordinate and the actual physical location.
In the technical scheme, by the point using on the basis of the specified coordinate point as the origin of coordinates, location data is carried out
Normalized, enabling delete the redundancy section in location data, reduce data transfer and the difficulty of processing；And pass through
It is rounded coordinate by the Coordinate Conversion after normalized, reduces the data processing amount of processor, reduces the place of processor
Reason burden；Meanwhile by establishing the corresponding relation between rounded coordinate and actual physical location, also allow for after processing
Rounded coordinate carried out with the actual physical location of above-mentioned specified object it is corresponding, to determine above-mentioned finger according to the rounded coordinate after processing
The actual physical location of earnest body.
In the above-mentioned technical solutions, it is preferable that the establishment of coordinate system unit 202 is specifically used for：Select outside the region
Coordinate points or the region edge on coordinate points as the specified coordinate point.
In the technical scheme, by select the coordinate points outside above-mentioned zone or the coordinate points on the edge in region be used as it is upper
State specified coordinate point so that the coordinate data got is all positive number, and then can facilitate the further processing to coordinate data.
In the above-mentioned technical solutions, it is preferable that the second processing unit 208 is specifically used for：To the normalized
Coordinate afterwards carries out logarithm operation processing, to obtain the rounded coordinate.
In the technical scheme, by carrying out logarithm operation processing to the coordinate after normalized, enabling will be floating
Points are converted to integer, reduce the processing load of processor.
In the above-mentioned technical solutions, it is preferable that the second processing unit 208 is additionally operable to：To the normalized
After coordinate afterwards carries out logarithm operation processing, translation coefficient is selected, is by the negative Coordinate Conversion in the rounded coordinate
Positive number coordinate.
In the above-mentioned technical solutions, it is preferable that the second processing unit 208 is using below equation by the normalization
Coordinate Conversion after reason is the rounded coordinate：
Q=C+ [k1×logα(x1-x0),k2×logβ(y1-y0)]；Wherein, (x1-x0) represent the horizontal stroke after normalized
Coordinate, (y1-y0) ordinate after normalized is represented, when α and β represent that abscissa and ordinate carry out logarithm operation respectively
The truth of a matter, K1And K2Proportionality coefficient is represented, C represents translation coefficient, and Q represents the rounded coordinate.
In the technical scheme, x0It is the abscissa of above-mentioned specified coordinate point, y0It is the ordinate of above-mentioned specified coordinate point,
x1It is the abscissa of the location data got, y1It is the ordinate of the location data got.
To sum up, the present invention mainly proposes a kind of method that pair warp and weft degrees of data is handled, and is transported by certain mathematics
Calculate pair warp and weft degree and carry out changes in coordinates, avoid the processing and transmission of redundancy, and floating-point operation is converted into integer arithmetic.
Specifically, technical scheme is broadly divided into three parts：1st, navigation area is selected, establishes coordinate system；2、
Changes in coordinates is carried out to the longitude and latitude in navigation area；3rd, under logarithmic coordinates system physical location foundation.
1st, navigation area, the foundation of coordinate system are selected.Mainly include the following steps that：
1) region of navigation is selected, can be an area or country；
2) be the longitudinal axis using latitude as transverse axis, longitude, and selection region is outer or edge on a point (access areas edge)
Latitude and longitude coordinates system is established as the origin of coordinates；It is of course also possible to using longitude as transverse axis, latitude is that the longitudinal axis establishes coordinate system.
3) point of coordinate system is designated as：W=(x1,y1)…(xi,yi)…(xm,yn), wherein, (x0,y0) it is the origin of coordinates, x tables
Show latitude coordinate, y represents longitude coordinate.
2nd, changes in coordinates is carried out to the longitude and latitude in navigation area, i.e., latitude and longitude coordinates system is converted into logarithmic coordinates system.
1) latitude and longitude coordinates system difference：
Coordinate system difference is that latitude and longitude coordinates system is subtracted a little into the origin of coordinates, and the origin of coordinates is normalized to (0,0),
Differentiated coordinate system is as follows：
W=(x1-x0,y1-y0),(x2-x0,y2-y0)…(xi-x0,yj-y0)…(xm-x0,yn-y0)。
2) logarithm operation：
Logarithm operation is carried out again to the point obtained after difference, its operational formula is as follows：
Q=C+ [(k1×logα(x1-x0),k2×logβ(y1-y0))…(k1×logα(x1-x0),k2×logβ(y1-
y0))...]；Wherein, k1And k2It is proportionality coefficient, α, β are the truth of a matter respectively horizontally and vertically, and C is translation coefficient, the seat of generation
Point under mark system is expressed as：
Q=(χ1,ε1),(χ2,ε2)…(χi,εj)…(χm,εn)。
3rd, under logarithmic coordinates system physical location foundation.
Logarithmic coordinates conversion is linear transformation, and the point of point to the new coordinate system of latitude and longitude coordinates is one-to-one.So
Actual physical location corresponding to longitude and latitude and the coordinate after change are corresponded, its corresponding relation is as shown in Figure 3.
Technical scheme is described in detail below in conjunction with specific embodiment.
1st, the selection in region.
Longitude range as shared by Shenzhen is:113.7667 degree to 114.6167 degree, latitude excursion is：22.45
Spend to 22.8667 degree.Some the longitude and latitude points for choosing Shenzhen are as follows：(22.4501,113.7668)、(22.4510,
113.7677), (22.4600,113.7767) and (22.5500,113.8667).
2nd, coordinate transform.
2.1st, the origin of (22.45,113.7667) as new changes in coordinates is chosen, aforementioned four point obtains after subtracting origin
Result it is as follows：(0.0001,0.0001)、(0.0010,0.0010)、(0.0100,0.0100)、(0.1000,0.1000).
2.2nd, by above-mentioned change formula, k is chosen1And k2For 1, α, β 10, then the point after coordinate transform is：(-4,-4)、
(-3,-3)、(-2,-2)、(-1,-1)。
2.3rd, it is 4 to select translation coefficient C, then four points are changed into (0,0), (1,1), (2,2), (3,3) successively, and negative is sat
Scale value is converted to positive number coordinate value.
3rd, under logarithmic coordinates system physical location foundation.
By longitude and latitude (22.4501,113.7668), (22.4510,113.7677), (22.4600,113.7767),
Position corresponding to (22.5500,113.8667) is mapped with (0,0), (1,1), (2,2), (3,3) respectively.
Although the point chosen in above-described embodiment is the convenient particular point calculated, by reasonably choosing k1、k2And α,
β, latitude and longitude coordinates rounded coordinate can be converted in conjunction with the precision (relevant with the decimal point given up after conversion) of positioning.
The above-mentioned technical proposal of the present invention has following technique effect：
1) floating-point operation can be converted into integer arithmetic, reduces the data processing amount of processor.For example (0,0) is entered
Row data processing is more much easier than processing (22.4501,113.7668).
2) part of redundancy in latitude and longitude coordinates information is deleted, reduces the task amount of data transfer and amount of storage.Than
Information such as integer part in longitude and latitude (22.4501,113.7668) is entirely redundancy for one's respective area, this programme
Coordinate transform can effectively remove the redundancy, reduce data storage and the difficulty of processing, it is clear that storage will with transmission (0,0)
It is more much easier than (22.4501,113.7668).
3) present invention is as a result of logarithm operation so that numerical value is amplified compared with small data on range, very big number
According to being reduced so that the range of data is optimized, and simplifies the difficulty of subsequent control, also improves follow-up data processing
Precision.
The application scenarios of the above-mentioned technical proposal of the present invention are more, such as in advance sit original longitude and latitude according to such scheme
Mark system is converted to rounded coordinate system, follow-up to carry out positioning accordingly, navigation processing etc.；Or determining for target object is got in real time
Position data, then handle location data according to such scheme, to obtain the rounded coordinate of target object, facilitate fortune
Calculate.
Technical scheme is described in detail above in association with accompanying drawing, it is contemplated that current location data is typically with floating
What points were recorded and transmitted, and the digit shared by the expression of floating number is typically twice of integer, adds the difficulty of storage
Degree, also increase the data volume of transmission；For the angle of data processing, it is floating data that processor is to be processed, floating number
According to intractability be significantly larger than the intractability of integer, so directly carrying out positioning with longitude and latitude degrees of data adds data processing
Difficulty.Therefore, the present invention proposes a kind of processing scheme of new location data, can delete the redundancy portion in location data
Point, the processing to location data and storage difficulty are reduced, while reduce the data processing amount of processor, reduce processor
Processing load.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (10)
- A kind of 1. processing method of location data, it is characterised in that including：The region navigated as needed, is selected as the specified coordinate point of the origin of coordinates, and be based on the specified coordinate point Establish coordinate system；Obtain the location data for specified object, the coordinate points that the location data is made up of longitude and latitude data；The point on the basis of the specified coordinate point, the location data is normalized, after obtaining normalized Coordinate；It is rounded coordinate by the Coordinate Conversion after the normalized；According to the corresponding relation between the actual physical location of the location data and the specified object, establish the integer and sit Corresponding relation between mark and the actual physical location.
- 2. the processing method of location data according to claim 1, it is characterised in that be selected as the origin of coordinates The step of specified coordinate point, specifically includes：The coordinate points outside the region or the coordinate points on the edge in the region are selected as the specified coordinate point.
- 3. the processing method of location data according to claim 2, it is characterised in that by the seat after the normalized The step of mark is converted to rounded coordinate includes：Logarithm operation processing is carried out to the coordinate after the normalized, to obtain the rounded coordinate.
- 4. the processing method of location data according to claim 3, it is characterised in that after to the normalized Coordinate also include after logarithm operation processing：Translation coefficient is selected, the negative coordinate value in the rounded coordinate is converted into positive number coordinate value.
- 5. the processing method of location data according to claim 4, it is characterised in that using below equation by the normalizing Coordinate Conversion after change processing is the rounded coordinate：Q=C+ [k1×logα(x1-x0),k2×logβ(y1-y0)]；Wherein, (x1-x0) represent the abscissa after normalized, (y1-y0) ordinate after normalized is represented, α and β divide Not Biao Shi the truth of a matter of abscissa and ordinate when carrying out logarithm operation, K1And K2Proportionality coefficient is represented, C represents translation coefficient, Q tables Show the rounded coordinate, x0It is the abscissa of above-mentioned specified coordinate point, y0It is the ordinate of above-mentioned specified coordinate point, x1It is to obtain The abscissa of the location data arrived, y1It is the ordinate of the location data got.
- A kind of 6. processing unit of location data, it is characterised in that including：Establishment of coordinate system unit, for the region navigated as needed, the specified coordinate point of the origin of coordinates is selected as, and Coordinate system is established based on the specified coordinate point；Acquiring unit, for obtaining the location data for specified object, the location data is made up of longitude and latitude data Coordinate points；First processing units, for the point on the basis of the specified coordinate point, the location data is normalized, with Obtain the coordinate after normalized；Second processing unit, for being rounded coordinate by the Coordinate Conversion after the normalized；Unit is established, for according to the corresponding relation between the actual physical location of the location data and the specified object, The corresponding relation established between the rounded coordinate and the actual physical location.
- 7. the processing unit of location data according to claim 6, it is characterised in that the establishment of coordinate system unit is specific For：The coordinate points outside the region or the coordinate points on the edge in the region are selected as the specified coordinate point.
- 8. the processing unit of location data according to claim 7, it is characterised in that the second processing unit is specifically used In：Logarithm operation processing is carried out to the coordinate after the normalized, to obtain the rounded coordinate.
- 9. the processing unit of location data according to claim 8, it is characterised in that the second processing unit is also used In：After the coordinate after to the normalized carries out logarithm operation processing, translation coefficient is selected, by the integer Negative Coordinate Conversion in coordinate is positive number coordinate.
- 10. the processing unit of location data according to claim 9, it is characterised in that the second processing unit uses Coordinate Conversion after the normalized is the rounded coordinate by below equation：Q=C+ [k1×logα(x1-x0),k2×logβ(y1-y0)]；Wherein, (x1-x0) represent the abscissa after normalized, (y1-y0) ordinate after normalized is represented, α and β divide Not Biao Shi the truth of a matter of abscissa and ordinate when carrying out logarithm operation, K1And K2Proportionality coefficient is represented, C represents translation coefficient, Q tables Show the rounded coordinate, x0It is the abscissa of above-mentioned specified coordinate point, y0It is the ordinate of above-mentioned specified coordinate point, x1It is to obtain The abscissa of the location data arrived, y1It is the ordinate of the location data got.
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| CN104048659A (en) * | 2014-06-16 | 2014-09-17 | 广州杰赛科技股份有限公司 | Method and system for transforming map coordinate system |
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