CN102469112A - Position tracking implementation method, device and system - Google Patents
Position tracking implementation method, device and system Download PDFInfo
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- CN102469112A CN102469112A CN2010105328067A CN201010532806A CN102469112A CN 102469112 A CN102469112 A CN 102469112A CN 2010105328067 A CN2010105328067 A CN 2010105328067A CN 201010532806 A CN201010532806 A CN 201010532806A CN 102469112 A CN102469112 A CN 102469112A
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Abstract
The invention provides a position tracking implementation method, a device and a system, belonging to the technical field of a computer. The method for implementing the position tracking comprises the following steps that: a client side sends a position tracking service request for a navigation positioning system terminal to a first position tracking implementation device; after receiving the position tracking service request, the first position tracking implementation device returns coordinate data and map images to the client side; and the client side receives the coordinate data and the map images and integrates the coordinate data and the map images, generates and displays the position information of the navigation positioning system terminal in a map. In the technical scheme provided by the invention, the network bandwidth can be saved and the overhead of a remote server can be reduced. The invention also provides a multi-URL (Uniform Resource Locator) selective connection and processing mechanism; and after the response of the local position tracking implementation device is not obtained, the client side can send the position tracking service request to the remote position tracking implementation device, so that the fault-tolerant capability of the position tracking implementation system can be enhanced.
Description
Technical field
The present invention relates to field of computer technology, be meant a kind of Position Tracking implementation method, Apparatus and system especially.
Background technology
Global position system GPS (Global Positioning System) is a satellite navigation and location system of being set up by the U.S., utilizes this system, and the user can realize round-the-clock, continuous, real-time three-dimensional navigation location in the world and test the speed.GPS sets up for the military provides accurate location at first, is applied to commercial civil area gradually, like aspects such as exploration drawing, aviation, marine navigation, vehicle tracing system, mobile computer and cell phone platforms.In recent years, GPS has obtained application more and more widely in China, is bringing into play irreplaceable effect at aspects such as exploration, measurement, aviation, navigation, rescue and relief work, electric power, water conservancy constructions, has greatly improved operating efficiency.
(BeiDou COMPASS Navigation Satellite System CNSS) is the Chinese independent development capability of implementing, the GPS of independent operating to Beidou satellite navigation system.CNSS is made up of space segment, ground segment and user segment three parts; Space segment comprises 5 satellites and 30 non-geo satellites; Ground segment comprises several ground stations such as master station, injection station and monitoring station; User segment comprises Big Dipper user terminal and the terminal compatible with other satellite navigation systems.CNSS provides high-quality location, navigation and time service service to global user, comprises open service and authorization service dual mode.Open service is to provide free the location, test the speed and the time service service to the whole world, 10 meters of positioning accuracies, rate accuracy 0.2 meter per second, 10 nanoseconds of time service precision.Authorization service is for the user of high accuracy, highly reliable satellite navigation demand is arranged, and the location is provided, tests the speed, time service and communication service and system health property information.CNSS will obtain application more and more widely in industries such as satellite fix, navigation, time service services.
GIS-Geographic Information System (Geographical Information System; GIS) be a kind of emerge science that is specifically designed to management geographical space distributed data that development in recent years is got up; It is utilize that modern computer figure and database technology are imported, store, edit, inquire about, analyzed, the computer system of decision-making and output region figure and attribute data thereof, be to melt the comprehensive new and high technology that geography, geometry, computer science and types of applications model are one.Its maximum characteristics can organically combine real-life various information with regard to being with the graphical information that reflects the geographical position; Can according to inquiry and the needs of analyzing with these information truths, both pictures and texts are excellent, and ground is showed, also can submit analysis decision models treated result to the administrative departments at different levels reference of making decision.
Being illustrated in figure 1 as the Traditional GIS system adopts based on browser/server (Browser/Server; Or B/S) framework; Traditional is that all navigation positioning system terminal datas, GIS Analysis server and Web server all are deployed in the remote server end based on B/S three-tier architecture design characteristic; Client is sent HTTP (Hyper Text Transfer Protocol through browser to remote server; HTTP) request; Web server receives that the request back obtains coordinate data from the navigation positioning system terminal database on the one hand; Through playing up service with GIS platform communication request map, the GIS server returns to Web server with the map image of resolving on the other hand, and final Web server carries out navigation positioning system terminal data and map datum match and is embedded into the browser that html page returns to client.
In the Traditional GIS architecture; Along with business constantly enlarges, number of clients constantly increases, because the central access Web server is all wanted in the request of All Clients; The Web server load capacity is limited, thereby causes problems such as system is unstable, reaction is slow, can't move; On the other hand; Map picture data volume through the GIS platform generates is relatively large, if through Internet Network Transmission map datum, be inappropriate for the too little client computer of the network bandwidth; The phenomenon that also has the waste bandwidth resource; Though map microtomy (Map Tile) has been adopted in now a lot of system designs, be about to a map image and be divided into the little picture of N sheet, the little picture that will be divided into then turns back to the client part displayed map image one by one; Thereby the enhancing user experience effect, but this mode can not fundamentally solve the excessive problem of Network Transmission flow all the time.
Summary of the invention
The technical problem that the present invention will solve provides a kind of Position Tracking implementation method, Apparatus and system; Can save the network bandwidth, reduce the remote server expense; And strengthened system survivability, for system provides reliable running environment, guarantee system stable operation.
For solving the problems of the technologies described above, embodiments of the invention provide technical scheme following:
On the one hand; A kind of Position Tracking implementation method is provided; Be applied to a Position Tracking and realize system, said Position Tracking realization system comprises: the primary importance that is arranged in the client terminal local network is followed the tracks of implement device and is arranged on the navigation positioning system terminal database in the telecommunication network; Said Position Tracking implementation method comprises:
Said client is followed the tracks of implement device to said primary importance and is sent the Position Tracking services request to the navigation positioning system terminal;
Said primary importance is followed the tracks of implement device after receiving said Position Tracking services request, and the navigation positioning system terminal database from said telecommunication network obtains the coordinate data at said navigation positioning system terminal;
Said primary importance is followed the tracks of implement device according to said coordinate data; Map vector data to self storage is resolved and is obtained said navigation positioning system terminal corresponding map image, and said coordinate data and said map image are returned to said client;
Said client receives said coordinate data and said map image and integrates, and generates and shows the positional information of said navigation positioning system terminal in map;
Wherein, said navigation positioning system terminal is GPS terminal or CNSS terminal, and said navigation positioning system terminal database is GPS terminal database or CNSS terminal database.
Wherein, said client receives said coordinate data and said map image and integrates, and generates and shows that the positional information of said navigation positioning system terminal in map comprises:
Said client is integrated the coordinate data at said map image and said navigation positioning system terminal through the JavaScript script technology, and in the browser of self, shows the positional information of said navigation positioning system terminal in map with the form of HTML.
On the other hand; The embodiment of the invention also provides a kind of Position Tracking implementation method; Be applied to a Position Tracking and realize system, said Position Tracking realization system comprises: the primary importance that is arranged in the client terminal local network is followed the tracks of implement device and is arranged on navigation positioning system terminal database and the above Position Tracking implement device in the telecommunication network; Said Position Tracking implementation method comprises:
Said client is followed the tracks of implement device to said primary importance and is sent the Position Tracking services request to the navigation positioning system terminal;
Said client does not receive said primary importance and follows the tracks of the data that implement device returns after Preset Time;
Said client reads the URL tabulation of self storing, the address that obtains the highest long-range Position Tracking implement device of priority;
Said client is sent the Position Tracking services request to said navigation positioning system terminal to the highest Position Tracking implement device of said priority;
The highest Position Tracking implement device of said priority is after receiving said Position Tracking services request, and the navigation positioning system terminal database from said telecommunication network obtains the coordinate data at said navigation positioning system terminal;
The highest Position Tracking implement device of said priority is according to said coordinate data; Map vector data to self storage is resolved and is obtained said navigation positioning system terminal corresponding map image, and said coordinate data and said map image are returned to said client;
Said client receives said coordinate data and said map image and integrates, and generates and shows the positional information of said navigation positioning system terminal in map;
Wherein, said navigation positioning system terminal is GPS terminal or CNSS terminal, and said navigation positioning system terminal database is GPS terminal database or CNSS terminal database.
Wherein, said client receives said coordinate data and said map image and integrates, and generates and shows that the positional information of said navigation positioning system terminal in map comprises:
Said client is integrated the coordinate data at said map image and said navigation positioning system terminal through the JavaScript script technology, and in the browser of self, shows the positional information of said navigation positioning system terminal in map with the form of HTML.
The embodiment of the invention also provides a kind of Position Tracking implement device, comprising:
Receiver module is used to receive the Position Tracking services request to the navigation positioning system terminal that client is sent;
Acquisition module is used for obtaining from long-range navigation positioning system terminal database the coordinate data at said navigation positioning system terminal;
Parsing module is used for the map vector data of self storage is resolved and obtained said navigation positioning system terminal corresponding map image;
Sending module is used for said map image and said coordinate data are returned to said client, so that said client shows the positional information of said navigation positioning system terminal in map;
Wherein, said navigation positioning system terminal is GPS terminal or CNSS terminal, and said navigation positioning system terminal database is GPS terminal database or CNSS terminal database.
The embodiment of the invention also provides a kind of client, comprising:
Processing module is used for following the tracks of implement device to the primary importance of local network and sends the Position Tracking services request to the navigation positioning system terminal;
Receiver module is used to receive coordinate data and map image that said primary importance is followed the tracks of the corresponding said navigation positioning system terminal that implement device returns;
Display module is used to integrate said coordinate data and said map image, and shows the positional information of said navigation positioning system terminal in map;
Wherein, said navigation positioning system terminal is GPS terminal or CNSS terminal, and said navigation positioning system terminal database is GPS terminal database or CNSS terminal database.
Wherein, do not follow the tracks of the data that implement device returns if said receiver module receives said primary importance after Preset Time, said processing module also comprises:
The chooser module is used to read the URL tabulation of self storing, the address that obtains the highest long-range Position Tracking implement device of priority;
Send submodule, be used for sending Position Tracking services request to said navigation positioning system terminal to the highest Position Tracking implement device of said priority;
Said receiver module also is used to receive the map image and the coordinate data at the corresponding said navigation positioning system terminal that the highest Position Tracking implement device of said priority returns.
Wherein, said display module comprises:
Processing sub is used for through the JavaScript script technology coordinate data at said map image and said navigation positioning system terminal being integrated;
Display sub-module is used for showing the positional information of said navigation positioning system terminal in map with the form of HTML at the browser of self.
The embodiment of the invention also provides a kind of Position Tracking to realize system, comprising:
Client; Be used for following the tracks of implement device and send Position Tracking services request to the navigation positioning system terminal to the primary importance of local network; Receive said primary importance and follow the tracks of the map image and the coordinate data at the corresponding said navigation positioning system terminal that implement device returns; Integrate said coordinate data and said map image, and show the positional information of said navigation positioning system terminal in map;
Said primary importance is followed the tracks of implement device; Be used to receive the Position Tracking services request that said client is sent to the navigation positioning system terminal; Obtain the coordinate data at said navigation positioning system terminal from long-range navigation positioning system terminal database; Map vector data to self storage is resolved and is obtained said navigation positioning system terminal corresponding map image; Said map image and said coordinate data are returned to said client, so that said client shows the positional information of said navigation positioning system terminal in map;
Wherein, said navigation positioning system terminal is GPS terminal or CNSS terminal, and said navigation positioning system terminal database is GPS terminal database or CNSS terminal database.
Wherein, said system also comprises an above Position Tracking implement device that is arranged in the telecommunication network;
Said client also is used for not following the tracks of the data that implement device returns if after Preset Time, receive said primary importance; Read the URL tabulation of self storing; Obtain the address of the highest long-range Position Tracking implement device of priority; Send Position Tracking services request to the highest Position Tracking implement device of said priority, and receive the map image and the coordinate data at the corresponding said navigation positioning system terminal that the highest Position Tracking implement device of said priority returns to said navigation positioning system terminal.
Embodiments of the invention have following beneficial effect:
In the such scheme; On the one hand, under normal circumstances, the Position Tracking implement device only needs remote access navigation positioning system terminal database to obtain a spot of coordinate data (like warp, latitude information); And map is played up function and is followed the tracks of the map vector data that implement device obtains local storage by primary importance; Resolve and can obtain map image, needn't be in Internet transmission through network view data, this has fundamentally realized the minimizing bandwidth traffic; Improve map play up and display speed in, greatly improved user experience.Simultaneously, because map is played up and the computational process of complicacy such as picture generation is carried out in this locality, can reduce the CPU expense of remote server widely.On the other hand; Client is when can not get the response of local primary importance tracking implement device; To obtain the address that remote location is followed the tracks of implement device through reading the URL tabulation; Strengthened system survivability,, guaranteed system stable operation for system provides reliable running environment.
Description of drawings
Fig. 1 is the structural representation of Traditional GIS system based on browser/server framework;
Fig. 2 is the schematic flow sheet of the Position Tracking implementation method of the embodiment of the invention;
Fig. 3 is another schematic flow sheet of the Position Tracking implementation method of the embodiment of the invention;
Fig. 4 is the structural representation of the Position Tracking implement device of the embodiment of the invention;
Fig. 5 is the structural representation of the client of the embodiment of the invention;
Fig. 6 is the structural representation that the Position Tracking of the embodiment of the invention realizes system;
Fig. 7 be the embodiment of the invention realize the structural representation of system based on the Position Tracking of browser and server architecture;
Fig. 8 be the embodiment of the invention realize another structural representation of system based on the Position Tracking of browser and server architecture;
Fig. 8 A be the embodiment of the invention realize the structural representation again of system based on the Position Tracking of browser and server architecture;
Fig. 8 B be the embodiment of the invention realize the another structural representation of system based on the Position Tracking of browser and server architecture;
Fig. 9 realizes the structural representation of system for the Position Tracking of many URL selections of having of embodiment of the invention connection processing mechanism;
Figure 10 realizes another structural representation of system for the Position Tracking of many URL selections of having of embodiment of the invention connection processing mechanism.
Embodiment
For technical problem, technical scheme and advantage that embodiments of the invention will be solved is clearer, will combine accompanying drawing and specific embodiment to be described in detail below.
Embodiments of the invention are to the excessive problem of Network Transmission flow in the prior art; A kind of Position Tracking implementation method, Apparatus and system are provided, can save the network bandwidth and reduce remote server expense, enhanced system fault-tolerant ability, the reliability service environment is provided and improves the stability of a system.
Fig. 2 is the schematic flow sheet of Position Tracking implementation method of the present invention; Present embodiment is applied to a Position Tracking and realizes system; Position Tracking realization system comprises: the primary importance that is arranged in the client terminal local network is followed the tracks of implement device and is arranged on the navigation positioning system terminal database in the telecommunication network; As shown in Figure 2, the Position Tracking implementation method comprises:
Step 201: client is followed the tracks of implement device to primary importance and is sent the Position Tracking services request to the navigation positioning system terminal;
Step 202: primary importance is followed the tracks of implement device after receiving the Position Tracking services request, and the navigation positioning system terminal database from telecommunication network obtains the coordinate data at navigation positioning system terminal;
Step 203: primary importance is followed the tracks of implement device according to coordinate data, the map vector data of self storing is resolved obtain navigation positioning system terminal corresponding map image, and coordinate data and map image are returned to client;
Step 204: client receives coordinate data and map image and integrates, and generates and the positional information of show navigator positioning system terminal in map.
Navigation positioning system terminal in the present embodiment is GPS terminal or CNSS terminal, and the navigation positioning system terminal database is GPS terminal database or CNSS terminal database, and local network can be based on the communication interface of Microsoft Loopback Adapter on this machine of client; Also can be based on the communication interface of winding (loopback) network interface card on this machine of client; Also can be on this machine of client other based on the interface of local communication mechanism; Can also be meant with the local gateway to be that core is carried out networking, externally local gateway provides unified export abroad to connect Internet, and internally local various device interconnects through local gateway.For example, local network can be with a plurality of equipment with household internal local area network (LAN) or enterprises lan that wired or wireless mode connects into, can obtain higher access speed between the equipment in the local network.Local network is connected to telecommunication network through the export abroad of local gateway, for example is connected to telecommunication network through Internet.
The Position Tracking implementation method of the embodiment of the invention; The Position Tracking implement device only needs remote access navigation positioning system terminal database to obtain a spot of coordinate data (like warp, latitude information); And map is played up function and is followed the tracks of the map vector data that implement device obtains local storage by primary importance; Resolve and can obtain map image, needn't be in Internet transmission through network view data, this has fundamentally realized the minimizing bandwidth traffic; Improve map play up and display speed in, greatly improved user experience.Simultaneously, because map is played up and the computational process of complicacy such as picture generation is carried out in this locality, can reduce the CPU expense of remote server widely.
Fig. 3 is another schematic flow sheet of Position Tracking implementation method of the present invention; Be applied to a Position Tracking and realize system; Position Tracking realization system comprises: the primary importance that is arranged in the client terminal local network is followed the tracks of implement device and is arranged on navigation positioning system terminal database and the above Position Tracking implement device in the telecommunication network; As shown in Figure 3, present embodiment comprises:
Step 301: client is followed the tracks of implement device to primary importance and is sent the Position Tracking services request to the navigation positioning system terminal;
Step 302: client does not receive primary importance and follows the tracks of the data that implement device returns after Preset Time;
Step 303: client reads the URL tabulation of self storing, the address that obtains the highest long-range Position Tracking implement device of priority;
Step 304: client is sent the Position Tracking services request to the navigation positioning system terminal to the highest Position Tracking implement device of priority;
Step 305: the highest Position Tracking implement device of priority is after receiving the Position Tracking services request, and the navigation positioning system terminal database from telecommunication network obtains the coordinate data at navigation positioning system terminal;
Step 306: the highest Position Tracking implement device of priority is according to coordinate data, the map vector data of self storage resolved obtain navigation positioning system terminal corresponding map image, and coordinate data and map image are returned to client;
Step 307: client receives coordinate data and map image and integrates, and generates and the positional information of show navigator positioning system terminal in map.
Wherein, the navigation positioning system terminal is GPS terminal or CNSS terminal, and the navigation positioning system terminal database is GPS terminal database or CNSS terminal database.
The Position Tracking implementation method of the embodiment of the invention; The primary importance that client first is selected to connect in the local network is followed the tracks of implement device; When the primary importance in can not get local network is followed the tracks of the response of implement device; Just can send the Position Tracking services request, so just guarantee the operation that client is reliable and stable to long-range Position Tracking implement device.
Fig. 4 is the structural representation of Position Tracking implement device of the present invention, and is as shown in Figure 4, and present embodiment comprises:
Parsing module 42 is used for the map vector data of self storage is resolved and obtained navigation positioning system terminal corresponding map image;
Sending module 43 is used for map image and coordinate data are returned to client, so that the positional information of client show navigator positioning system terminal in map.
Wherein, the navigation positioning system terminal is GPS terminal or CNSS terminal, and the navigation positioning system terminal database is GPS terminal database or CNSS terminal database.
The Position Tracking implement device of the embodiment of the invention; Only need remote access navigation positioning system terminal database to obtain a spot of coordinate data (like warp, latitude information); And map is played up function is obtained local storage by the Position Tracking implement device map vector data; Resolve and can obtain map image, needn't be in Internet transmission through network view data, this has fundamentally realized the minimizing bandwidth traffic; Improve map play up and display speed in, greatly improved user experience.Simultaneously, because map is played up and the computational process of complicacy such as picture generation is carried out in this locality, can reduce the CPU expense of remote server widely.
Fig. 5 is the structural representation of client of the present invention, and is as shown in Figure 5, and present embodiment comprises:
Wherein, the navigation positioning system terminal is GPS terminal or CNSS terminal, and the navigation positioning system terminal database is GPS terminal database or CNSS terminal database.
Wherein, do not follow the tracks of the data that implement device returns if receiver module 51 receives primary importance after Preset Time, processing module 50 also comprises:
The chooser module is used to read the URL tabulation of self storing, the address that obtains the highest long-range Position Tracking implement device of priority;
Send submodule, be used for sending Position Tracking services request to the navigation positioning system terminal to the highest Position Tracking implement device of priority;
Wherein, display module 52 comprises:
Processing sub is used for through script technologies such as JavaScript the coordinate data at map image and navigation positioning system terminal being integrated;
Display sub-module is used for the form of the HTML positional information of browser show navigator positioning system terminal in map at self.
The Position Tracking implement device that the client of the embodiment of the invention only need be visited local disposition just can obtain map image and navigation positioning system data; Needn't obtain view data through the Internet network; Improve map play up and display speed in, greatly improved user experience.Simultaneously, accomplish, can reduce the CPU expense of remote server widely because the computational process that map is played up and picture generation etc. is complicated is followed the tracks of implement device by the primary importance of this locality.And the client of the embodiment of the invention can be in can not get local network primary importance when following the tracks of the response of implement device; Send the Position Tracking services request to long-range Position Tracking implement device, so just guaranteed that the client of present embodiment can all-the-time stable be moved reliably.
Fig. 6 is the structural representation that Position Tracking of the present invention realizes system, and as shown in Figure 6, present embodiment comprises:
Primary importance is followed the tracks of implement device 61; Be used to receive the Position Tracking services request that client 60 is sent to the navigation positioning system terminal; Obtain the coordinate data at navigation positioning system terminal from long-range navigation positioning system terminal database; Map vector data to self storage is resolved and is obtained navigation positioning system terminal corresponding map image, map image and coordinate data is returned to client 60, so that the positional information of client 60 show navigator positioning system terminals in map.
Wherein, the navigation positioning system terminal is GPS terminal or CNSS terminal, and the navigation positioning system terminal database is GPS terminal database or CNSS terminal database.
Wherein, This system also comprises an above Position Tracking implement device that is arranged in the telecommunication network; Client 60 is not followed the tracks of the data that implement device 61 returns if after Preset Time, receive primary importance; Read the URL tabulation of self storing; Obtain the address of the highest long-range Position Tracking implement device of priority, send Position Tracking services request, and receive the map image and the coordinate data at the corresponding navigation positioning system terminal that the highest Position Tracking implement device of priority returns to the navigation positioning system terminal to the highest Position Tracking implement device of priority.
The Position Tracking of the embodiment of the invention realizes system; Client only need be visited local primary importance tracking implement device just can obtain map image and navigation positioning system data; The Position Tracking implement device only needs to obtain a spot of coordinate data (like warp, latitude information) from long-range navigation positioning system terminal database; And map is played up function and is followed the tracks of the map vector data that implement device obtains local storage by primary importance; Resolve and can obtain map image, present embodiment needn't be in Internet transmission through network view data, and this has fundamentally realized the minimizing bandwidth traffic; Improve map play up and display speed in, greatly improved user experience.Simultaneously, because map is played up and the Position Tracking implement device of computational process in this locality of complicacy such as picture generation carries out, can reduce the CPU expense of remote server widely.
Describe in detail in the face of Position Tracking implementation method of the present invention down.Among the present invention; Web server, GIS application server and GIS data portion are deployed in client terminal local form primary importance tracking implement device; At remote deployment navigation positioning system terminal database server; Wherein, the navigation positioning system terminal database is GPS terminal database or CNSS terminal database.As shown in Figure 7; Through this deployment way; The Position Tracking implement device only needs remote access navigation positioning system terminal database to obtain a spot of coordinate data (like warp, latitude information), and map is played up the Position Tracking implement device completion of merit by client terminal local disposition, and map is played up and is operated in the local realization of client computer like this; Needn't be in Internet transmission through network view data; This has been from having realized the minimizing bandwidth traffic, improve map play up and display speed in, greatly improved user experience.Simultaneously, because the computational process that map is played up and picture generation etc. is complicated is accomplished in that client computer is local, can reduce the CPU expense of remote server widely.
Be illustrated in figure 8 as of the present invention based on B/S structure (Browser/Server structure; Browser and server architecture) Position Tracking realize the system implementation example; In the present embodiment; The GIS application server can adopt the MapXtreme Java geographical information platform of MapInfo company, hereinafter to be referred as the MapXtremeJava application server.Below in conjunction with system shown in Figure 7, as shown in Figure 8, the Position Tracking implementation method of present embodiment is specifically described:
1. client browser is followed the tracks of implement device to the primary importance of this locality and is initiated the Position Tracking services request to the navigation positioning system terminal;
2. the web application in the primary importance tracking implement device is to the coordinate data at remote server data library call navigation positioning system terminal;
3. the coordinate data at navigation positioning system terminal is returned in the remote server data storehouse;
4. primary importance is followed the tracks of the MapXtreme Java application server initiation map image request of web application in primary importance tracking implement device in the implement device;
5. the MapXtreme Java application server in the primary importance tracking implement device calls MDF (Mirror Disc File, the image file) map data file of local storage, acquisition request vector data and metadata;
6. primary importance is followed the tracks of the map vector data that the MapXtreme Java application server reception in the implement device is returned;
7. primary importance follow the tracks of in the implement device MapXtreme Java application server according to the map vector data resolve and obtain navigation positioning system terminal corresponding map image, and map image returned to primary importance follow the tracks of the web application in the implement device;
8. the web application in the primary importance tracking implement device returns to client browser with the map image and the navigation positioning system end coordinates data that obtain;
9. client is integrated the data that obtain through script technologies such as JavaScript; With HTML (HyperText Mark-up Language, HTML) form show navigator positioning system terminal positional information in map image in browser.
In the embodiment shown in fig. 8; Client is obtained the coordinate data at map image and navigation positioning system terminal through Web server; Shown in Fig. 8 A; The Web server that client can also still be followed the tracks of in the implement device through primary importance obtains the coordinate data at navigation positioning system terminal; And the GIS server of directly visiting in the primary importance tracking implement device through technology such as JavaScript obtains map image, and last browser is integrated the coordinate data of obtaining from Web server with from the map image that the GIS server obtains again, with HTML form show navigator positioning system terminal positional information in map image in browser.Below in conjunction with the system shown in Fig. 8 A, shown in Fig. 8 B, the Position Tracking implementation method of present embodiment is specifically described:
1. client browser is followed the tracks of implement device to the primary importance of this locality and is initiated the Position Tracking services request to the navigation positioning system terminal;
2. the web application in the primary importance tracking implement device is to the coordinate data at remote server data library call navigation positioning system terminal;
3. the remote server data storehouse coordinate data of returning the navigation positioning system terminal is followed the tracks of the web application in the implement device to primary importance;
4. the web application in the primary importance tracking implement device returns to client browser with coordinate data;
5. client browser is followed the tracks of the MapXtreme Java application server initiation map image request in the implement device through technology such as JavaScript to primary importance;
6. the MapXtreme Java application server in the primary importance tracking implement device calls the MDF map data file of local storage, acquisition request vector data and metadata;
7. primary importance is followed the tracks of the map vector data that the MapXtreme Java application server reception in the implement device is returned;
8. the MapXtreme Java application server in the primary importance tracking implement device is resolved the map vector data that obtains and is obtained navigation positioning system terminal corresponding map image, and map image is returned to client browser;
9. client is through script technologies such as JavaScript; To integrate final form show navigator positioning system terminal positional information in map image in browser from the coordinate data of WEB server acquisition with from the map image that the GIS server obtains with HTML.
Can further fundamentally realize reducing bandwidth traffic like this, improve map play up and display speed in, greatly improved user experience.Simultaneously, because map is played up and the computational process of complicacy such as picture generation is carried out at client browser, can not only reduce the CPU expense of remote server widely, and can make system respond the various operational motions of user more fast map.
In the time of can not service being provided for client in order to ensure primary importance tracking implement device in this locality; Client still can be reliable and stable operation; As shown in Figure 9; The present invention also provides a kind of many URL (Uniform Resource Locator, URL) that have to select the Position Tracking of connection processing mechanism to realize system.This many URL choice mechanism implementation mainly realizes through script technologies such as JavaScript.Client terminal local is preserved a url list, and this url list comprises information such as address and the port of a plurality of Web servers and GIS application server.When client is initiated the Position Tracking services request; Client browser preferentially attempts selecting to connect local Web server and GIS application server through script technologies such as JavaScript; If the Position Tracking services request can not get response for a long time; Client can start many URL automatically and select connection processing mechanism; Read the address and the port information of subsequent use Web server and GIS application server in the url list through script technologies such as JavaScript, and attempt access remote Web server and GIS application server, till being connected to reliable server and communicating according to the configurable priority orders of user.Select connection processing mechanism through this many URL, strengthened Position Tracking and realized system survivability, also reliable running environment is provided for Position Tracking realization system.
In the embodiment shown in fig. 10; Long-range Web server, long-range GIS application server are formed remote location follow the tracks of implement device; The GIS application server adopts the MapXtreme Java geographical information platform of MapInfo company; The foreground html page then adopts introduces Ajax (being Asynchronous JavaScriptand XML) engine technique, and url list information is kept in the file of an XML (Extensible MarkupLanguage, extend markup language) form.Through introducing the Ajax engine technique, can help user and background application server to communicate, the Ajax engine allows the mutual asynchronous transmission of user and application server, thereby strengthens user experience effect.Below in conjunction with system shown in Figure 9, shown in figure 10, the Position Tracking implementation method of present embodiment is specifically described:
1. client browser is initiated the Position Tracking services request to the navigation positioning system terminal to the Ajax engine;
2. the Ajax engine is attempted initiating the Position Tracking services request to the navigation positioning system terminal to the MapXtreme Java application server that primary importance is followed the tracks of in the implement device;
3. the Ajax engine can't be connected to primary importance and follow the tracks of the MapXtreme Java application server in the implement device, and the Ajax engine is dished out unusually;
4. the Ajax engine reads the url list XML file of client terminal local storage, obtains the URL recorded information that remote location is followed the tracks of implement device, and selects remote location to follow the tracks of implement device by preset priority policy;
5. the Ajax engine is followed the tracks of implement device to remote location and is initiated the Position Tracking services request to the navigation positioning system terminal;
6. remote location is followed the tracks of implement device and is obtained the coordinate data at navigation positioning system terminal to long-range navigation positioning system terminal database;
7. long-range navigation positioning system terminal database is followed the tracks of the GPS/CNSS coordinate data that implement device returns the navigation positioning system terminal to remote location;
8. remote location tracking implement device is resolved the terminal GPS/CNSS coordinate data of obtaining, and generates corresponding map image, at last map image and GPS/CNSS coordinate data is returned to the Ajax engine;
9. the Ajax engine is integrated the data that obtain, and map image and navigation positioning system location information of terminals are shown in the client browser.
Said method embodiment is corresponding with said device embodiment; The description of relevant portion gets final product among the part comparable device embodiment that in method embodiment, does not describe in detail, and the description of relevant portion gets final product among the part reference method embodiment that in device embodiment, does not describe in detail.
One of ordinary skill in the art will appreciate that; Realize that all or part of step in the foregoing description method is to instruct relevant hardware to accomplish through program; Described program can be stored in the computer read/write memory medium, and this program comprises the step like above-mentioned method embodiment when carrying out; Described storage medium; As: magnetic disc, CD, read-only storage memory body (Read-Only Memory, ROM) or at random store memory body (Random Access Memory, RAM) etc.
In each method embodiment of the present invention; The sequence number of said each step can not be used to limit the sequencing of each step; For those of ordinary skills, under the prerequisite of not paying creative work, the priority of each step is changed also within protection scope of the present invention.
The above is a preferred implementation of the present invention; Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from principle according to the invention; Can also make some improvement and retouching, these improvement and retouching also should be regarded as protection scope of the present invention.
Claims (10)
1. Position Tracking implementation method; Be applied to a Position Tracking and realize system; It is characterized in that said Position Tracking realization system comprises: the primary importance that is arranged in the client terminal local network is followed the tracks of implement device and is arranged on the navigation positioning system terminal database in the telecommunication network; Said Position Tracking implementation method comprises:
Said client is followed the tracks of implement device to said primary importance and is sent the Position Tracking services request to the navigation positioning system terminal;
Said primary importance is followed the tracks of implement device after receiving said Position Tracking services request, and the navigation positioning system terminal database from said telecommunication network obtains the coordinate data at said navigation positioning system terminal;
Said primary importance is followed the tracks of implement device according to said coordinate data; Map vector data to self storage is resolved and is obtained said navigation positioning system terminal corresponding map image, and said coordinate data and said map image are returned to said client;
Said client receives said coordinate data and said map image and integrates, and generates and shows the positional information of said navigation positioning system terminal in map;
Wherein, said navigation positioning system terminal is GPS terminal or CNSS terminal, and said navigation positioning system terminal database is GPS terminal database or CNSS terminal database.
2. Position Tracking implementation method according to claim 1 is characterized in that, said client receives said coordinate data and said map image and integrates, and generates and shows that the positional information of said navigation positioning system terminal in map comprises:
Said client is integrated the coordinate data at said map image and said navigation positioning system terminal through the JavaScript script technology, and in the browser of self, shows the positional information of said navigation positioning system terminal in map with the form of HTML.
3. Position Tracking implementation method; Be applied to a Position Tracking and realize system; It is characterized in that said Position Tracking realization system comprises: the primary importance that is arranged in the client terminal local network is followed the tracks of implement device and is arranged on navigation positioning system terminal database and the above Position Tracking implement device in the telecommunication network; Said Position Tracking implementation method comprises:
Said client is followed the tracks of implement device to said primary importance and is sent the Position Tracking services request to the navigation positioning system terminal;
Said client does not receive said primary importance and follows the tracks of the data that implement device returns after Preset Time;
Said client reads the URL tabulation of self storing, the address that obtains the highest long-range Position Tracking implement device of priority;
Said client is sent the Position Tracking services request to said navigation positioning system terminal to the highest Position Tracking implement device of said priority;
The highest Position Tracking implement device of said priority is after receiving said Position Tracking services request, and the navigation positioning system terminal database from said telecommunication network obtains the coordinate data at said navigation positioning system terminal;
The highest Position Tracking implement device of said priority is according to said coordinate data; Map vector data to self storage is resolved and is obtained said navigation positioning system terminal corresponding map image, and said coordinate data and said map image are returned to said client;
Said client receives said coordinate data and said map image and integrates, and generates and shows the positional information of said navigation positioning system terminal in map;
Wherein, said navigation positioning system terminal is GPS terminal or CNSS terminal, and said navigation positioning system terminal database is GPS terminal database or CNSS terminal database.
4. Position Tracking implementation method according to claim 3 is characterized in that, said client receives said coordinate data and said map image and integrates, and generates and shows that the positional information of said navigation positioning system terminal in map comprises:
Said client is integrated the coordinate data at said map image and said navigation positioning system terminal through the JavaScript script technology, and in the browser of self, shows the positional information of said navigation positioning system terminal in map with the form of HTML.
5. a Position Tracking implement device is characterized in that, comprising:
Receiver module is used to receive the Position Tracking services request to the navigation positioning system terminal that client is sent;
Acquisition module is used for obtaining from the navigation positioning system terminal database of telecommunication network the coordinate data at said navigation positioning system terminal;
Parsing module is used for the map vector data of self storage is resolved and obtained said navigation positioning system terminal corresponding map image;
Sending module is used for said map image and said coordinate data are returned to said client, so that said client shows the positional information of said navigation positioning system terminal in map;
Wherein, said navigation positioning system terminal is GPS terminal or CNSS terminal, and said navigation positioning system terminal database is GPS terminal database or CNSS terminal database.
6. a client is characterized in that, comprising:
Processing module is used for following the tracks of implement device to the primary importance of local network and sends the Position Tracking services request to the navigation positioning system terminal;
Receiver module is used to receive coordinate data and map image that said primary importance is followed the tracks of the corresponding said navigation positioning system terminal that implement device returns;
Display module is used to integrate said coordinate data and said map image, and shows the positional information of said navigation positioning system terminal in map;
Wherein, said navigation positioning system terminal is GPS terminal or CNSS terminal, and said navigation positioning system terminal database is GPS terminal database or CNSS terminal database.
7. client according to claim 6 is characterized in that, does not follow the tracks of the data that implement device returns if said receiver module receives said primary importance after Preset Time, and said processing module also comprises:
The chooser module is used to read the URL tabulation of self storing, the address that obtains the highest long-range Position Tracking implement device of priority;
Send submodule, be used for sending Position Tracking services request to said navigation positioning system terminal to the highest Position Tracking implement device of said priority;
Said receiver module also is used to receive the map image and the coordinate data at the corresponding said navigation positioning system terminal that the highest Position Tracking implement device of said priority returns.
8. client according to claim 6 is characterized in that, said display module comprises:
Processing sub is used for through the JavaScript script technology coordinate data at said map image and said navigation positioning system terminal being integrated;
Display sub-module is used for showing the positional information of said navigation positioning system terminal in map with the form of HTML at the browser of self.
9. a Position Tracking realizes system, it is characterized in that, comprising:
Client; Be used for following the tracks of implement device and send Position Tracking services request to the navigation positioning system terminal to the primary importance of local network; Receive said primary importance and follow the tracks of the map image and the coordinate data at the corresponding said navigation positioning system terminal that implement device returns; Integrate said coordinate data and said map image, and show the positional information of said navigation positioning system terminal in map;
Said primary importance is followed the tracks of implement device; Be used to receive the Position Tracking services request that said client is sent to the navigation positioning system terminal; Obtain the coordinate data at said navigation positioning system terminal from long-range navigation positioning system terminal database; Map vector data to self storage is resolved and is obtained said navigation positioning system terminal corresponding map image; Said map image and said coordinate data are returned to said client, so that said client shows the positional information of said navigation positioning system terminal in map;
Wherein, said navigation positioning system terminal is GPS terminal or CNSS terminal, and said navigation positioning system terminal database is GPS terminal database or CNSS terminal database.
10. Position Tracking according to claim 9 realizes system, it is characterized in that said system also comprises an above Position Tracking implement device that is arranged in the telecommunication network;
Said client also is used for not following the tracks of the data that implement device returns if after Preset Time, receive said primary importance; Read the URL tabulation of self storing; Obtain the address of the highest long-range Position Tracking implement device of priority; Send Position Tracking services request to the highest Position Tracking implement device of said priority, and receive the map image and the coordinate data at the corresponding said navigation positioning system terminal that the highest Position Tracking implement device of said priority returns to said navigation positioning system terminal.
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