CN104061938A - Navigation method, apparatus and system - Google Patents
Navigation method, apparatus and system Download PDFInfo
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- CN104061938A CN104061938A CN201310092427.4A CN201310092427A CN104061938A CN 104061938 A CN104061938 A CN 104061938A CN 201310092427 A CN201310092427 A CN 201310092427A CN 104061938 A CN104061938 A CN 104061938A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
- G01C21/26—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 specially adapted for navigation in a road network
- G01C21/34—Route searching; Route guidance
- G01C21/3407—Route searching; Route guidance specially adapted for specific applications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
- G01C21/26—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 specially adapted for navigation in a road network
- G01C21/34—Route searching; Route guidance
- G01C21/3453—Special cost functions, i.e. other than distance or default speed limit of road segments
- G01C21/3461—Preferred or disfavoured areas, e.g. dangerous zones, toll or emission zones, intersections, manoeuvre types, segments such as motorways, toll roads, ferries
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Abstract
The invention discloses a navigation method, an apparatus and a system, the method comprises the following steps: a segmented navigation instruction is sent to a server terminal, wherein the segmented navigation instruction comprises a start point position, a destination position and a segment distance; one segmented navigation data sent by the server terminal is received, the segmented navigation data is a segment of navigation data which is characterized in that on the target navigation path, the initial position is taken as a start point, the segment distance is the length, and the navigation data is obtained by calculating according to the start point position and the destination position; a navigation service is started according to the received segmented navigation data, through sending the segmented navigation instruction, the whole navigation path is divided into several individual navigation by a server for being treated, one segment of path data is provided for loading each time, so that the navigation service can be started according to the loaded segment of the navigation data, waiting time for starting the navigation service is greatly reduced, and the user experience is improved.
Description
Technical field
Electronic navigation of the present invention relates to field, particularly relates to a kind of air navigation aid, Apparatus and system.
Background technology
At present, when the user terminal (as navigating instrument or smart mobile phone etc.) that navigation software is installed in use navigates, set behind final position user, user terminal can send to server end by the path computing request that comprises user's current location, destination locations and some Personalized Navigation information, with target navigation path corresponding to acquisition request; Server end carries out guidance path calculating according to the path computing request receiving, and obtains target navigation path; User terminal is disposable downloads navigation data corresponding to target navigation path from server end, thereby starts navigation Service.
Prior art, user terminal only disposable successfully download navigation data corresponding to target navigation path after, could start navigation Service, can there is following technological deficiency in this navigate mode: the target navigation path of growing for length, its corresponding navigation data amount is larger, download the time that navigation data corresponding to complete strips target navigation path need to be longer, therefore, before starting navigation Service, not only need to spend the longer time to wait for the download of navigation data, and whether can successfully download the long-term stability that also depends on network environment, encountering in the frequent unsettled situation of network environment, also may be because burst network goes offline, situations such as network congestion and make navigation data failed download, thereby cause the failed problem of navigating.
Summary of the invention
In order to solve long, navigation data failed download of above-mentioned startup navigation Service stand-by period, the failed problem that causes navigating the invention provides a kind of air navigation aid, Apparatus and system.
The embodiment of the invention discloses following technical scheme:
A kind of air navigation aid, comprising:
Send segmentation navigation instruction to server end, described segmentation navigation instruction comprises initial point position, destination locations and point segment distance;
The navigation data of the segmentation that reception server end sends, when the navigation data of the described segmentation target navigation path that to be described server end obtain calculating according to described initial point position and destination locations in judgement is greater than described point of segment distance, the one section of navigation data intercepting taking point segment distance as length taking reference position as starting point from described target navigation path;
Start navigation Service according to the navigation data of receive segmentation.
Preferably, start after navigation Service according to described segmentation navigation data described, also comprise:
Whether the current location that judges user is not more than preset distance threshold to the distance in the final position of the segmentation having received;
If so, carry out the step of described transmission segmentation navigation instruction to server end, the initial point position in described segmentation navigation instruction is the final position of segmentation or described user's the current location having received.
Preferably, described distance threshold is less than described point segment distance.
Preferably, send segmentation navigation instruction to before server end, also comprise:
Judge whether current navigation mode is segmentation navigation mode, if so, carry out the step of described transmission segmentation navigation instruction to server end.
A kind of navigation user terminal, comprising:
Navigation instruction transmitting element, for sending segmentation navigation instruction to server end, described segmentation navigation instruction comprises initial point position, destination locations and point segment distance;
Navigation data receiving element, the navigation data of the segmentation sending for reception server end, when the navigation data of the described segmentation target navigation path that to be described server end obtain calculating according to described initial point position and destination locations in judgement is greater than described point of segment distance, the one section of navigation data intercepting taking point segment distance as length taking reference position as starting point from described target navigation path;
Navigation elements, for starting navigation Service according to the navigation data of the segmentation receiving.
Preferably, also comprise:
Whether Distance Judgment unit, be not more than preset distance threshold for the current location that judges user to the distance in the final position of the segmentation having received;
Trigger element, for in described Distance Judgment unit judges when being, trigger described navigation instruction transmitting element and send segmentation navigation instruction to server end, the initial point position in this segmentation navigation instruction is the final position of segmentation or described user's the current location having received.
Preferably, also comprise:
Navigation mode judging unit, for sending segmentation navigation instruction at described navigation instruction transmitting element to before server end, judges that whether current navigation mode is segmentation navigation mode, if so, triggers described navigation instruction transmitting element.
A kind of air navigation aid, comprising:
Receive the segmentation navigation instruction that user terminal sends, described segmentation navigation instruction comprises initial point position, destination locations and point segment distance;
According to described initial point position and destination locations, calculate target navigation path;
Whether the length that judges described target navigation path is greater than described point segment distance;
If so, from described target navigation path, intercept the navigation data of a segmentation taking described initial point position as starting point taking described point of segment distance as length;
Send the navigation data of a described segmentation to user terminal.
Preferably, if judgement obtains described target navigation path while being less than or equal to described point of segment distance, described method also comprises:
Send the navigation data in described target navigation path to user terminal.
A kind of navigation server end, comprising:
Navigation instruction receiving element, the segmentation navigation instruction sending for receiving user terminal, described segmentation navigation instruction comprises initial point position, destination locations and point segment distance;
Path-calculating element, for according to described initial point position and destination locations, calculates target navigation path;
Judging unit, for judging whether the length in described target navigation path is greater than described point segment distance;
Interception unit in the time that described judging unit is judged as YES, intercepts the navigation data of a segmentation from described target navigation path taking described initial point position as starting point taking described point of segment distance as length;
The first navigation data transmitting element, for the navigation data that sends a described segmentation to user terminal.
Preferably, also comprise:
The second navigation data transmitting element, in the time that described judging unit is judged as NO, sends the navigation data in described target navigation path to user terminal.
A kind of navigational system, comprises user terminal and server end:
Described user terminal is aforementioned user terminal;
Described server end is aforementioned server end.
Can be found out by technique scheme, by sending segmentation navigation instruction, making server end that whole guidance path is divided into multiple independent navigation processes, provide wherein one section of guidance path of whole guidance path by user terminal downloads at every turn, the navigation data amount that user terminal once will be downloaded like this diminishes relatively, and can start navigation Service according to one section of navigation data downloading, and the stand-by period that starts navigation Service is greatly reduced, improve user's Experience Degree; And each one section of navigation data downloading is less, and download time is shorter, can improves greatly navigation data and download success ratio.
Brief description of the drawings
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the method flow diagram of a kind of air navigation aid of the present invention;
Fig. 2 is the structure drawing of device of a kind of navigation user terminal of the present invention;
Fig. 3 is another method flow diagram of a kind of air navigation aid of the present invention;
Fig. 4 is the structure drawing of device of a kind of navigation server end of the present invention;
Fig. 5 is the signaling diagram of a kind of air navigation aid of the present invention.
Embodiment
For above-mentioned purpose of the present invention, feature and advantage can be become apparent more, below in conjunction with accompanying drawing, the embodiment of the present invention is described in detail.
Embodiment mono-
Refer to Fig. 1, its method flow diagram that is a kind of air navigation aid of the present invention, the method comprises the following steps:
S101: send segmentation navigation instruction to server end, described segmentation navigation instruction comprises initial point position, destination locations and point segment distance;
Here it should be noted that, described point of segment distance be one can predefined distance value, user can adjust the numerical value of described point of segment distance as basis for estimation accordingly according to the hobby of oneself, the quality of place network and the travelling speed of guider etc., if do not adjusted, system can provide the segmentation distance value of an acquiescence, such as 10km, certainly, the present invention does not carry out any restriction to the concrete numerical value of point segment distance to this.
It should be noted that simultaneously, described segmentation navigation instruction is except segmentation range information, other information that comprise do not have difference with the information that normal navigation comprises, the preference that is mainly initial point position, destination locations and user requires (such as lacking red light, passage in transit somewhere, many fastlinks etc.), has just repeated no more here.
Preferably, send segmentation navigation instruction to before server end, also comprise:
S100: judge whether current navigation mode is segmentation navigation mode, if so, carry out the step of described transmission segmentation navigation instruction to server end.
Here it should be noted that, user terminal is to support two kinds of different navigation modes, and a kind of is exactly conventional navigation mode, is and downloads the pattern that starts navigation after whole section of navigation data, and another kind is exactly segmentation navigation mode of the present invention.Whether carrying out segmentation navigation can be chosen according to actual conditions by user in starting navigational system, or is set in the situation of acquiescence and navigates with any pattern.Certainly, navigate for segmentation, user can self-defined point of segment distance size, the words that do not arrange just adopt point segment distance of acquiescence, these are described in detail in S101, can set to send segmentation navigation instruction whether at every turn and all need user to confirm or each segmentation navigation instruction acquiescence sends automatically simultaneously.
S102: the navigation data of the segmentation that reception server end sends, when the navigation data of the described segmentation target navigation path that to be described server end obtain calculating according to described initial point position and destination locations in judgement is greater than described point of segment distance, the one section of navigation data intercepting taking point segment distance as length taking reference position as starting point from described target navigation path;
The navigation of described segmentation can be independent from the current position at vehicle place that is navigated to the navigation of the terminal of segmentation, so, the full detail that navigation was comprised that information that the navigation data of described segmentation comprises be is destination with the starting point in segmentation navigation instruction to the terminal of described segmentation in normal navigation, such as the general view information in target navigation path and the details of segmentation.Wherein, the general view information in target navigation path comprises, general view coordinate (road latitude and longitude coordinates is carried out to the coordinate after vacuate), tmc (traffic message channel, the Real-time Traffic Information broadcast) information of the road name of general view coordinate place road, navigation action, the current traffic information of mark etc.; The details of the first segmentation comprise, the detailed coordinate of road longitude and latitude, in detail the road name of coordinate place road, navigation action, tmc information etc.
S103: start navigation Service according to the navigation data of receive segmentation.
When receiving after above-mentioned navigation data, just can start navigation Service, and navigate according to the navigation data receiving.
Preferably, after step S103, also comprise:
S104: whether the current location that judges user is not more than preset distance threshold to the distance in the final position of the segmentation having received, if, repeat abovementioned steps 101, the initial point position in the segmentation navigation instruction now sending is the final position of segmentation or described user's the current location having received;
User terminal calculates the distance on guidance path of segment endpoint position in real time according to the current location that is navigated vehicle, such as, the navigation data of the segmentation that user terminal provides according to server starts navigation, the starting point of segmentation is A, terminal is B, the current location that is navigated vehicle is A ', user terminal monitor in real time A ' to B the distance on guidance path, or A ' all can to the air line distance of B.
Preferably, described distance threshold is less than described point segment distance.
This step it should be noted that, first, the size that described distance threshold is concrete, this distance threshold can be one with the proportional value of point segment distance, be 1: 5 such as set fixed proportion,, in the time dividing a segment distance to be 10km, distance threshold is 2km; Also can be set as being less than arbitrarily the positive number of segmentation distance, such as 1km or 500m etc., as long as being less than a point segment distance, the present invention does not limit the concrete size of described distance threshold.Secondly, the effect of described distance threshold is to provide certain lead for downloading next section of navigation data, in the time being navigated vehicle current location and being less than described distance threshold to the distance in the final position of segmentation, user terminal sends segmentation navigation instruction again to server end, the information that the segmentation navigation instruction here comprises with in step S102, describe identical, be still initial point position, destination locations and user's preference requirement.
It should be noted that for above-mentioned initial point position, initial point position is the final position of segmentation or described user's the current location having received, the corresponding method of two kinds of different intercepting segmentations, in the time that user terminal is sending initial point position in segmentation navigation instruction and is being the final position of the segmentation that received, server end is starting point according to the final position of the segmentation having received, destination locations is that final position calculates target navigation path, in intercepting segmentation, using the described terminal of segmentation that received as the starting point of next section of segmentation, from described target navigation path, intercept a segmentation with described point of segment distance, or in like manner, when sending initial point position in segmentation navigation instruction as described user's current location taking user terminal, server end is starting point according to described user's current location, destination locations is that final position calculates target navigation path, in intercepting segmentation, starting point using described user's current location as next section of segmentation, from described target navigation path, intercept a segmentation with described point of segment distance.It is exactly more than the preferred implementation method that two kinds of starting points according to different definition intercept a segmentation.
The method that intercepts segmentation from described user's current location as starting point is compared in this final position that has received segmentation as the method for the intercepting segmentation of starting point, can be without repeated downloads from described user's current location to the navigation data the described final position that has received segmentation, the size of this segment data is directly proportional to the distance threshold of setting, further improved the download efficiency of navigation data, the method that intercepts segmentation as starting point using described user's current location can send the final position data that receive segmentation relatively less to server end.
The device embodiment of corresponding this method embodiment is shown in embodiment bis-.
Embodiment bis-
Corresponding with a kind of air navigation aid of embodiment mono-, the present embodiment also provides a kind of navigation user terminal.Refer to Fig. 2, it is the structure drawing of device of the user terminal of a kind of segmentation navigation of the present invention, comprising:
Navigation instruction transmitting element 201, for sending segmentation navigation instruction to server end, described segmentation navigation instruction comprises initial point position, destination locations and point segment distance;
Navigation data receiving element 202, the navigation data of the segmentation sending for reception server end, when the navigation data of the described segmentation target navigation path that to be described server end obtain calculating according to described initial point position and destination locations in judgement is greater than described point of segment distance, the one section of navigation data intercepting taking point segment distance as length taking reference position as starting point from described target navigation path;
Navigation elements 203, for starting navigation Service according to the navigation data of the segmentation receiving.
Preferably, also comprise:
Whether Distance Judgment unit 204, be not more than preset distance threshold for the current location that judges user to the distance in the final position of the segmentation having received;
Trigger element 205, while being used for being judged as YES in described Distance Judgment unit 204, trigger described navigation instruction transmitting element and send segmentation navigation instruction to server end, the initial point position in this segmentation navigation instruction is the final position of segmentation or described user's the current location having received.
Preferably, also comprise:
Navigation mode judging unit 200, for sending segmentation navigation instruction at described navigation instruction transmitting element 201 to before server end, judges that whether current navigation mode is segmentation navigation mode, if so, triggers described navigation instruction transmitting element.
As can be seen from the above-described embodiment, user terminal is by sending segmentation navigation instruction, each like this needs one section of navigation data downloading in whole guidance path can start navigation Service, and the stand-by period that starts navigation Service is greatly reduced, and has improved user's Experience Degree.
Embodiment tri-
Refer to Fig. 3, its another method flow diagram that is a kind of air navigation aid of the present invention, the method comprises the following steps:
S301: receive the segmentation navigation instruction that user terminal sends, described segmentation navigation instruction comprises initial point position, destination locations and point segment distance;
About this step is described in detail in the S101 of embodiment mono-, repeat no more here.
S302: according to described initial point position and destination locations, calculate target navigation path;
Calculate target navigation path and belong to prior art, cook up the optimized target navigation path from the current location of navigation vehicle to destination according to the described initial point position comprising in described segmentation navigation instruction and destination locations and the individual subscriber fancy setting that may comprise.
S303: whether the length that judges described target navigation path is greater than described point segment distance;
In the time that server end detects the segmentation navigation instruction that user terminal sends over, start segmentation navigational logic, whether the whole path in the target navigation path calculating in determining step S302 is greater than the length scale of point segment distance.
S304: the navigation data that if so, intercepts a segmentation from described target navigation path taking described initial point position as starting point taking described point of segment distance as length;
When the length in and if only if described target navigation path is large, segmentation navigation is carried out in target navigation path to be processed, the concrete grammar that segmentation intercepts is, from the starting point in target navigation path, the final position of the described user's who namely comprises in described path computing request current location or the segmentation having received starts, after the length of point segment distance of advancing along corresponding target navigation path to the direction of destination, stop, this halt is the final position of intercepted segmentation, server end offers user side for downloading by the path navigation data of described segmentation, the general view information that also comprises described target navigation path simultaneously providing etc.
S305: send the navigation data of a described segmentation to user terminal.
Preferably, according to the judged result of step S303, also comprise:
S306: if judgement obtains described target navigation path while being less than or equal to described point of segment distance, described method also comprises:
Send the navigation data in described target navigation path to user terminal.
Here it should be noted that, if the target navigation path calculating according to segmentation navigation instruction is shorter, directly send target navigation data to user terminal, under actual application, generally have two kinds of situations that may occur described in this step.One is that navigation purpose ground distance users current location is just shorter originally, and the navigation data of this situation itself is just very little, does not need to carry out the processing of segmentation navigation; Another kind is that target navigation path is just very long originally, carries out segmentation navigation, is entering after one or many segmentation intercepting, and the length of last remaining guidance path is to be certainly less than point segment distance, in this case, directly sends remaining navigation data.
The device embodiment of corresponding this method embodiment is shown in embodiment tetra-.
Embodiment tetra-
Corresponding with a kind of air navigation aid of embodiment tri-, the present embodiment also provides a kind of navigation server end.Refer to Fig. 4, the structure drawing of device of its server end that is a kind of navigation of the present invention, comprising:
Navigation instruction receiving element 401, the segmentation navigation instruction sending for receiving user terminal, described segmentation navigation instruction comprises initial point position, destination locations and point segment distance;
Path-calculating element 402, for according to described initial point position and destination locations, calculates target navigation path;
Judging unit 403, for judging whether the length in described target navigation path is greater than described point segment distance;
Interception unit 404 in the time that described judging unit is judged as YES, intercepts the navigation data of a segmentation from described target navigation path taking described initial point position as starting point taking described point of segment distance as length;
The first navigation data transmitting element 405, for the navigation data that sends a described segmentation to user terminal.
Preferably, also comprise:
The second navigation data transmitting element 406, in the time that described judging unit is judged as NO, sends the navigation data in described target navigation path to user terminal.
As can be seen from the above-described embodiment, the segmentation navigation instruction that server end sends according to user terminal, from user terminal current location, from described target navigation path, intercept the first segmentation with described point of segment distance, and the navigation data of described the first segmentation is offered to user terminal for downloading, each like this needs one section of navigation data downloading in whole guidance path can start navigation Service, and the stand-by period that starts navigation Service is greatly reduced, and has improved user's Experience Degree.
Embodiment five
Refer to Fig. 5, its signaling diagram that is a kind of air navigation aid of the present invention, wherein:
S501: user terminal receives segmentation navigation instruction.
S502: user terminal sends described segmentation navigation instruction to server end, this segmentation navigation instruction comprises initial point position, destination locations and point segment distance.
S503: server end receives the segmentation navigation instruction that user terminal sends, according to described initial point position and destination locations, calculates target navigation path.
S504: server end judges whether the length in described target navigation path is greater than described point segment distance.If the length in described target navigation path is large, enter S505; If the length of described point of segment distance is large, enter S506.
S505: server end sends the navigation data in described target navigation path to user terminal, and enters S508.
S506: server end intercepts the navigation data of a segmentation from described target navigation path taking described initial point position as starting point taking described point of segment distance as length.
S507: server end sends the navigation data of a described segmentation to user terminal.
S508: the navigation data that user terminal reception server end sends, and start navigation Service according to described navigation data.
S509: user terminal judges that whether current location is not more than preset distance threshold to the distance that receives segment endpoint position, if so, enters S510.
S510: execution step S502, the initial point position in described segmentation navigation instruction is the final position of segmentation or described user's the current location having received.
Embodiment six
The present embodiment is a kind of navigational system of the present invention, comprises user terminal and server end:
Described user terminal is arbitrary user terminal in user side embodiment of the present invention;
Described server end is arbitrary server end in server end embodiment of the present invention.
Can be found out by technique scheme, by sending segmentation navigation instruction, making server that whole guidance path is divided into multiple independent navigation processes, provide wherein one section of guidance path of whole guidance path by user terminal downloads at every turn, the navigation data amount that user terminal once will be downloaded like this diminishes relatively, and can start navigation Service according to this section of navigation data of downloading, and the stand-by period that starts navigation Service is greatly reduced, improve user's Experience Degree.
It should be noted that, one of ordinary skill in the art will appreciate that all or part of flow process realizing in above-described embodiment method, can carry out the hardware that instruction is relevant by computer program to complete, described program can be stored in a computer read/write memory medium, this program, in the time carrying out, can comprise as the flow process of the embodiment of above-mentioned each side method.Wherein, described storage medium can be magnetic disc, CD, read-only store-memory body (Read-Only Memory, ROM) or random store-memory body (Random AccessMemory, RAM) etc.
Above a kind of air navigation aid provided by the present invention, Apparatus and system are described in detail, applied specific embodiment herein principle of the present invention and embodiment are set forth, the explanation of above embodiment is just for helping to understand method of the present invention and core concept thereof; , for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention meanwhile.
Claims (12)
1. an air navigation aid, is characterized in that, comprising:
Send segmentation navigation instruction to server end, described segmentation navigation instruction comprises initial point position, destination locations and point segment distance;
The navigation data of the segmentation that reception server end sends, when the navigation data of the described segmentation target navigation path that to be described server end obtain calculating according to described initial point position and destination locations in judgement is greater than described point of segment distance, the one section of navigation data intercepting taking point segment distance as length taking reference position as starting point from described target navigation path;
Start navigation Service according to the navigation data of receive segmentation.
2. method according to claim 1, is characterized in that, starts after navigation Service according to described segmentation navigation data described, also comprises:
Whether the current location that judges user is not more than preset distance threshold to the distance in the final position of the segmentation having received;
If so, carry out the step of described transmission segmentation navigation instruction to server end, the initial point position in described segmentation navigation instruction is the final position of segmentation or described user's the current location having received.
3. method according to claim 2, is characterized in that, described distance threshold is less than described point segment distance.
4. method according to claim 1, is characterized in that, sends segmentation navigation instruction to before server end, also comprises:
Judge whether current navigation mode is segmentation navigation mode, if so, carry out the step of described transmission segmentation navigation instruction to server end.
5. a navigation user terminal, is characterized in that, comprising:
Navigation instruction transmitting element, for sending segmentation navigation instruction to server end, described segmentation navigation instruction comprises initial point position, destination locations and point segment distance;
Navigation data receiving element, the navigation data of the segmentation sending for reception server end, when the navigation data of the described segmentation target navigation path that to be described server end obtain calculating according to described initial point position and destination locations in judgement is greater than described point of segment distance, the one section of navigation data intercepting taking point segment distance as length taking reference position as starting point from described target navigation path;
Navigation elements, for starting navigation Service according to the navigation data of the segmentation receiving.
6. user terminal according to claim 5, is characterized in that, also comprises:
Whether Distance Judgment unit, be not more than preset distance threshold for the current location that judges user to the distance in the final position of the segmentation having received;
Trigger element, for in described Distance Judgment unit judges when being, trigger described navigation instruction transmitting element and send segmentation navigation instruction to server end, the initial point position in this segmentation navigation instruction is the final position of segmentation or described user's the current location having received.
7. user terminal according to claim 6, is characterized in that, also comprises:
Navigation mode judging unit, for sending segmentation navigation instruction at described navigation instruction transmitting element to before server end, judges that whether current navigation mode is segmentation navigation mode, if so, triggers described navigation instruction transmitting element.
8. an air navigation aid, is characterized in that, comprising:
Receive the segmentation navigation instruction that user terminal sends, described segmentation navigation instruction comprises initial point position, destination locations and point segment distance;
According to described initial point position and destination locations, calculate target navigation path;
Whether the length that judges described target navigation path is greater than described point segment distance;
If so, from described target navigation path, intercept the navigation data of a segmentation taking described initial point position as starting point taking described point of segment distance as length;
Send the navigation data of a described segmentation to user terminal.
9. method according to claim 8, is characterized in that, if judgement obtains described target navigation path while being less than or equal to described point of segment distance, described method also comprises:
Send the navigation data in described target navigation path to user terminal.
10. a navigation server end, is characterized in that, comprising:
Navigation instruction receiving element, the segmentation navigation instruction sending for receiving user terminal, described segmentation navigation instruction comprises initial point position, destination locations and point segment distance;
Path-calculating element, for according to described initial point position and destination locations, calculates target navigation path;
Judging unit, for judging whether the length in described target navigation path is greater than described point segment distance;
Interception unit in the time that described judging unit is judged as YES, intercepts the navigation data of a segmentation from described target navigation path taking described initial point position as starting point taking described point of segment distance as length;
The first navigation data transmitting element, for the navigation data that sends a described segmentation to user terminal.
11. server ends according to claim 10, is characterized in that, also comprise:
The second navigation data transmitting element, in the time that described judging unit is judged as NO, sends the navigation data in described target navigation path to user terminal.
12. 1 kinds of navigational system, is characterized in that, comprise user terminal and server end:
Described user terminal is the user terminal as described in claim 5～7 any one;
Described server end is the server end as described in claim 10 or 11.
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| CN201310092427.4A CN104061938B (en) | 2013-03-21 | 2013-03-21 | A kind of air navigation aid, apparatus and system |
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| CN105606105A (en) * | 2014-11-19 | 2016-05-25 | 比亚迪股份有限公司 | Navigation method, navigation server and navigation system |
| CN107402015A (en) * | 2016-05-19 | 2017-11-28 | 高德信息技术有限公司 | A kind of public transport air navigation aid and device |
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