CN103023997A - Massive geographical information name and address conversion method and device based on grid caching technology - Google Patents
Massive geographical information name and address conversion method and device based on grid caching technology Download PDFInfo
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Abstract
The invention discloses a massive geographical information name and address conversion method and device based on a grid caching technology. The device comprises a grid caching module and a name and address conversion module, wherein the grid caching module comprises a coordinate choice module, a grid setting module and a cache processing module; and the name and address conversion module comprises a geographic information system (GIS) engine name and address acquisition module and a grid caching name and address acquisition module. The method and the device disclosed by the invention can be used for implementing rapid name and address conversion of massive data.
Description
Technical field
Technical field involved in the present invention has GIS-Geographic Information System (GIS), global positioning system (GPS) and location-based service (LBS).
Background technology
In recent years, geographical information technology is widely used in the productive life many aspects such as communication navigation, logistics transportation, city management, emergency command, aid decision.Simultaneously, " geographic information public service platform " in national each province and city also begins rapidly to have built and obtained good Application effect.Constantly perfect along with " geographic information public service platform ", geographical spatial data deepens continuously in the application of all trades and professions, traditional with the map datum of small data quantity develop into gradually massive map data take T as unit, the technical problem of " how efficiently to manage mass data and from mass data quick-searching go out useful information " causes that more and more people pay close attention to.
Along with social development and progress, location-based service (Location Based Service, LBS) day by day be applied to the productive life every field, it is by telecom operators' communication network or global positioning system (Global Positioning System, GPS) obtain the positional information (geographical coordinate) of mobile phone users, at GIS-Geographic Information System (Geographic Information System, GIS) under the support of platform, provide a kind of value-added service of respective service for the user.Various portable terminals such as car-mounted terminal, mobile phone etc. via satellite or the base station can obtain the coordinate information of mobile phone users, but people's pair warp and weft degree coordinate information is (such as east longitude 118.76492, north latitude 30.04463) insensitive, need to convert to and hold intelligible address (ADDR positional information (such as Nanjing Han Zhonglu), the coordinate information that how to pass through portable terminal obtains corresponding address (ADDR information from the magnanimity geographic information data, traditional way is to inquire about address (ADDR corresponding to current coordinate by the GIS engine from mass data, this method is inefficiency in searching mass data is used, the way that the present invention adopts the grid buffer memory to be combined with the GIS engine. retrieves has promoted retrieval rate from magnanimity GIS data.
Summary of the invention
Technical problem to be solved by this invention provides a kind of magnanimity geography information address (ADDR conversion method and the device based on the grid caching technology that can realize quick address (ADDR conversion in mass data.
The present invention is in order to solve above-mentioned technical problem: the present invention has designed a kind of magnanimity geography information address (ADDR conversion method based on the grid caching technology, comprises following concrete steps:
Step (1): obtain original coordinates information from locating terminal;
Step (2): accept or reject according to the Grid Edge little scale that carries out original coordinates information of growing up;
Step (3): utilize the coordinate information after scale is accepted or rejected in the step (2) from the grid buffer memory, to inquire about whether there be the record identical with its latitude and longitude coordinates;
If there is the identical record of latitude and longitude coordinates, then return address (ADDR information corresponding to this record, flow process finishes; If there is not the identical record of latitude and longitude coordinates, then from map datum, search the address (ADDR information corresponding with original coordinate information in the step (2) by the GIS engine;
Step (4): the address (ADDR information of finding in original coordinate information and the step (3) in the preservation step (2) is returned the address (ADDR information that step (3) inquires to the buffer memory grid, and flow process finishes.
The present invention has also designed a kind of magnanimity geography information address (ADDR conversion equipment based on the grid caching technology, it is characterized in that: comprise grid cache module and address (ADDR modular converter, described grid cache module comprises coordinate choice module, grid setting module and buffer process module, described address (ADDR modular converter comprises that the GIS engine obtains the address (ADDR module and the grid buffer memory obtains the address (ADDR module, wherein;
Described grid setting module is used for setting the buffer memory grid length of side in conjunction with current map scale, determines the size of grid, and transfers to coordinate choice module;
Described coordinate is accepted or rejected module and is used for little the scale that carries out original coordinates information being accepted or rejected by growing up according to Grid Edge, and the coordinate information after scale accepted or rejected transfers to buffer process module;
Described buffer process module is used for all coordinate informations and the corresponding address (ADDR information of buffer memory grid are preserved as one with the buffer memory form, and the grid buffer memory obtains the address (ADDR module and is used for from the corresponding address (ADDR information that gets of the current coordinate information of buffer process module inquiry;
If there is not corresponding address (ADDR information in buffer process module, then the GIS engine obtains the interface that the address (ADDR module provides by the GIS engine, inputs coordinate information to be checked, by engine queries to the identical address (ADDR information of current coordinate.
The present invention compared with prior art has advantages of as follows:
1. the present invention has abandoned traditional address (ADDR query conversion by the single-mode of engine queries, adopt grid buffer memory way, with the form of positional information with virtual grid, latitude and longitude coordinates and corresponding address (ADDR are saved in the grid buffer memory, in the time of the address (ADDR query conversion, preferentially from the grid buffer memory, retrieve, pass through again the GIS engine queries for the record that does not have in the grid buffer memory, the way of being combined with the GIS engine queries by this grid buffer memory, can significantly alleviate the GIS server stress, promote search efficiency, the Query Result that returns rapidly and efficiently is conducive to improve user's experience, the improving product competitiveness produces larger economic benefit;
2. the present invention can be widely used in large-scale geographical information platform for the address (ADDR query and search of magnanimity information, such as logistics distribution, intelligent transportation, postal service, express delivery, LBS etc.
Description of drawings
Fig. 1 is W-GS84 ellipsoid schematic diagram among the present invention;
Fig. 2 is that middle latitude of the present invention calculates schematic diagram;
Fig. 3 is that grid is set schematic diagram among the present invention;
Fig. 4 is grid buffer memory address (ADDR conversion equipment among the present invention;
Fig. 5 is based on the address (ADDR conversion method flow chart of grid buffer memory among the present invention.
Embodiment
The present invention is described in further detail below in conjunction with accompanying drawing:
Grid buffer memory address (ADDR transformation approach:
Grid buffer memory address (ADDR transformation approach refers in using the electronic chart process, according to the virtual setting of a certain small length of side a series of square nets, each grid has unique sign, each grid is set a latitude and longitude coordinates, the address (ADDR (place name or address) that each grid is corresponding unique, be under the jurisdiction of address (ADDR corresponding to all interior coordinate points of a certain grid identical, in by longitude and latitude inquiry address (ADDR, the buffer memory grid that directly is subordinate to according to coordinate comes quick-searching to arrive the method for corresponding address (ADDR.
1. how much foundations
Geographic coordinate system: also can be described as the coordinate system of real world, is for definite atural object coordinate system of position on earth.A specific geographic coordinate system is to be made of a specific spheroid and a kind of specific map projection, and wherein spheroid is a kind of mathematical description to the figure of the earth, and map projection is the mathematical method that spherical coordinate is converted to plane coordinates.Most maps all is to abide by a kind of known geographic coordinate system to come the displaing coordinate data.The most frequently used geographic coordinate system is latitude and longitude coordinates system, this coordinate system can be determined the earth what any position of taking up an official post, this coordinate system uses WGS-84 ellipsoid (GPS global positioning system ellipsoid, 17 International Association of Geodesy (IAG)s, a=6378137.0000000m b=6356752.3142451m α=0.00335281006247), graticules is exactly the geographical coordinate reference system graticule mesh that adds at the earth's surface;on the face of the globe, longitude and latitude be from ground ball center over the ground ball surface set point measure the angle that obtains, longitude is east-west direction, and latitude is North and South direction, warp passes from earth south poles, and parallel is the loop wire that is parallel to the equator.Consistent through coil length, parallel circle length is successively decreased from the equator to the two poles of the earth, with reference to Fig. 1;
Through the coil length L
1=2 * π * b=39920.4045km
Equator parallel circle length L
2=2 * π * a=40054.7004km
1 latitude representative apart from S
1=L
1/ 360=110.890km
Region of the equator 1 longitude representative is apart from S
2=L
2/ 360=111.263km
Latitude is the area of u, and 1 longitude represents apart from S
3=S
2* Sin (90-u) is with reference to Fig. 2.
Above all distances refer to point-to-point transmission segmental arc length, non-rectilinear distance.
2. grid is set
The setting of sizing grid, i.e. several aspects such as the main map-based engineer's scale of the setting of the grid length of side, terminal positioning precision and practical application accuracy requirement consider and draw.The positioning accuracy of GPS: in theory, the positioning accuracy of GPS can arrive meter level, and the U.S. is for security consideration, the location longitude of the civilian GPS of artificial restriction, when receiving more than 4 effectively satellite-signal, GPS just can realize locating, and the positioning accuracy of civilian GPS can reach about 10 meters.Current, the universal map engineer's scale is generally 1:10000, and namely 10m is expressed as 1mm at map on the spot; Latitude be 32 the degree about In Nanjing,
1 longitude represents distance and is about: 111.263km * Sin (90-32)=94.356km;
1 latitude represents distance and is about: 110.890km;
The segmental arc distance of the point-to-point transmission that approaches very much at longitude and latitude can be approximately equal to the air line distance of point-to-point transmission, so:
10
-5Longitude=0.94356m is about 1m
10
-5Latitude=1.1089m is about 1m
Can draw thus, for any latitude and longitude coordinates, the precision of the 5th bit representation is the m level behind the decimal point, and the 4th is the 10m level behind the decimal point, and the 3rd is the 100m level behind the decimal point, can analogize according to this.Get behind the decimal point grid that 4 grids of setting are length of side 10m, get the grid that the grid of 3 settings behind the decimal point is length of side 100m.Be illustrated in figure 3 as the grid of length of side 10m, be that latitude is between interval [32.12340,32.12349), longitude is between interval [118.87650,118.87659) all coordinate points all belong to same grid, such as the figure shadow region, this mesh coordinate keeps behind decimal point 4 and saves as 118.8765,32.1234, the corresponding unique address (ADDR of this grid; The rest may be inferred, is the 100m grid if set the length of side, and this coordinate saves as 118.876,32.123.
3. address (ADDR conversion
By above knowing, the corresponding unique address (ADDR in net region, in the situation that known latitude and longitude coordinates, rationally set the grid length of side according to the error longitude that allows, pair warp and weft degree coordinate is accepted or rejected scale, with the grid under the latitude and longitude coordinates inquiry after accepting or rejecting, inquire about the address (ADDR of unique correspondence according to grid.
As shown in Figure 5, the present invention has designed a kind of magnanimity geography information address (ADDR conversion method based on the grid caching technology, comprises following concrete steps:
Step (1): obtain original coordinates information from locating terminal;
Step (2): accept or reject according to the Grid Edge little scale that carries out original coordinates information of growing up;
Step (3): utilize the coordinate information after scale is accepted or rejected in the step (2) from the grid buffer memory, to inquire about whether there be the record identical with its latitude and longitude coordinates;
If there is the identical record of latitude and longitude coordinates, then return address (ADDR information corresponding to this record, flow process finishes;
If there is not the identical record of latitude and longitude coordinates, then from map datum, search the address (ADDR information corresponding with original coordinate information in the step (2) by the GIS engine;
Step (4): the address (ADDR information of finding in original coordinate information and the step (3) in the preservation step (2) is returned the address (ADDR information that step (3) inquires to the buffer memory grid, and flow process finishes.
The present invention has also designed a kind of magnanimity geography information address (ADDR conversion equipment based on the grid caching technology, it is characterized in that: comprise grid cache module and address (ADDR modular converter, described grid cache module comprises coordinate choice module, grid setting module and buffer process module, described address (ADDR modular converter comprises that the GIS engine obtains the address (ADDR module and the grid buffer memory obtains the address (ADDR module, wherein;
Described grid setting module is used for setting the buffer memory grid length of side in conjunction with current map scale, determines the size of grid, and transfers to coordinate choice module;
Described coordinate is accepted or rejected module and is used for little the scale that carries out original coordinates information being accepted or rejected by growing up according to Grid Edge, and the coordinate information after scale accepted or rejected transfers to buffer process module;
Described buffer process module is used for all coordinate informations and the corresponding address (ADDR information of buffer memory grid are preserved as one with the buffer memory form, and the grid buffer memory obtains the address (ADDR module and is used for from the corresponding address (ADDR information that gets of the current coordinate information of buffer process module inquiry;
If there is not corresponding address (ADDR information in buffer process module, then the GIS engine obtains the interface that the address (ADDR module provides by the GIS engine, inputs coordinate information to be checked, by engine queries to the identical address (ADDR information of current coordinate.
The invention provides a kind of magnanimity geography information address (ADDR conversion method and device based on the grid caching technology.Abandoned traditional address (ADDR query conversion by the single-mode of engine queries, adopt grid buffer memory way, with the form of positional information with virtual grid, latitude and longitude coordinates and corresponding address (ADDR are saved in the grid buffer memory, in the time of the address (ADDR query conversion, preferentially from the grid buffer memory, retrieve, pass through again the GIS engine queries for the record that does not have in the grid buffer memory, the way of being combined with the GIS engine queries by this grid buffer memory, can significantly alleviate the GIS server stress, promote search efficiency, the Query Result that returns rapidly and efficiently is conducive to improve user's experience, the improving product competitiveness produces larger economic benefit.
The present invention has been widely used in large-scale geographical information platform for the address (ADDR query and search of magnanimity information, such as logistics distribution, intelligent transportation, postal service, express delivery, LBS etc.
Claims (2)
1. magnanimity geography information address (ADDR conversion method based on the grid caching technology is characterized in that: comprise following concrete steps:
Step (1): obtain original coordinates information from locating terminal;
Step (2): accept or reject according to the Grid Edge little scale that carries out original coordinates information of growing up;
Step (3): utilize the coordinate information after scale is accepted or rejected in the step (2) from the grid buffer memory, to inquire about whether there be the record identical with its latitude and longitude coordinates;
If there is the identical record of latitude and longitude coordinates, then return address (ADDR information corresponding to this record, flow process finishes;
If there is not the identical record of latitude and longitude coordinates, then from map datum, search the address (ADDR information corresponding with original coordinate information in the step (2) by the GIS engine;
Step (4): the address (ADDR information of finding in original coordinate information and the step (3) in the preservation step (2) is returned the address (ADDR information that step (3) inquires to the buffer memory grid, and flow process finishes.
2. magnanimity geography information address (ADDR conversion equipment based on the grid caching technology, it is characterized in that: comprise grid cache module and address (ADDR modular converter, described grid cache module comprises coordinate choice module, grid setting module and buffer process module, described address (ADDR modular converter comprises that the GIS engine obtains the address (ADDR module and the grid buffer memory obtains the address (ADDR module, wherein;
Described grid setting module is used for setting the buffer memory grid length of side in conjunction with current map scale, determines the size of grid, and transfers to coordinate choice module;
Described coordinate is accepted or rejected module and is used for little the scale that carries out original coordinates information being accepted or rejected by growing up according to Grid Edge, and the coordinate information after scale accepted or rejected transfers to buffer process module;
Described buffer process module is used for all coordinate informations and the corresponding address (ADDR information of buffer memory grid are preserved as one with the buffer memory form, and the grid buffer memory obtains the address (ADDR module and is used for from the corresponding address (ADDR information that gets of the current coordinate information of buffer process module inquiry;
If there is not corresponding address (ADDR information in buffer process module, then the GIS engine obtains the interface that the address (ADDR module provides by the GIS engine, inputs coordinate information to be checked, by engine queries to the identical address (ADDR information of current coordinate.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104252525A (en) * | 2014-08-28 | 2014-12-31 | 重庆智韬信息技术中心 | Data retrieval based on geographic location coordinate set regions |
| CN107122453A (en) * | 2017-04-26 | 2017-09-01 | 航天科技控股集团股份有限公司 | A kind of acceleration coordinate transformation method and device based on recorder management platform |
| CN107622061A (en) * | 2016-07-13 | 2018-01-23 | 阿里巴巴集团控股有限公司 | A kind of method, apparatus and system for determining address uniqueness |
| CN110399438A (en) * | 2018-04-24 | 2019-11-01 | 北京视联动力国际信息技术有限公司 | A kind of GIS point information query method and device |
| CN110837605A (en) * | 2019-10-17 | 2020-02-25 | 贝壳技术有限公司 | Low-flow consumption quick positioning method |
| CN111666508A (en) * | 2020-06-02 | 2020-09-15 | 厦门卫星定位应用股份有限公司 | Method and device for extracting detailed addresses corresponding to longitude and latitude |
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| CN104252525A (en) * | 2014-08-28 | 2014-12-31 | 重庆智韬信息技术中心 | Data retrieval based on geographic location coordinate set regions |
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| CN110837605A (en) * | 2019-10-17 | 2020-02-25 | 贝壳技术有限公司 | Low-flow consumption quick positioning method |
| CN111666508A (en) * | 2020-06-02 | 2020-09-15 | 厦门卫星定位应用股份有限公司 | Method and device for extracting detailed addresses corresponding to longitude and latitude |
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Application publication date: 20130403 |