CN102096083B - Position encoding method, position encoding location and transmission method and position service terminal - Google Patents
Position encoding method, position encoding location and transmission method and position service terminal Download PDFInfo
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Abstract
The invention discloses a position encoding method, a position encoding location and transmission method and a position service terminal. The position encoding method provided by the invention comprises the following steps of: determining an encoding precision; converting longitude and latitude information into a decimal code according to the encoding precision; and converting the converted decimal code into a tetratriacontal code. The invention also discloses a position encoding location and transmission method and a position service terminal. By adopting the technical scheme of the invention, the position information can be expressed more accurately because a given position is encoded.
Description
Technical field
The present invention relates to the location-based service technology, more particularly, relate to position encoded method, position encoded location, sending method and location-based service terminal.
Background technology
Electronic chart is a system of cartography and application, is the map that is generated by electronic computer control, is based on the screen map of digital mapping technology, is visual figure on the spot." visual on computer screen " is the basic feature of electronic chart.The characteristics of electronic chart have following 6: 1. can fast access show.2. can realize animation.3. the map elements layering can be shown.4. utilize virtual reality technology with map three-dimensional, mobilism, make the user that sense on the spot in person is arranged.5. utilize data transmission technology electronic chart can be transferred to other places.6. can realize the automatic measurement of length, angle, area etc. on the figure.
Electronic chart can carry out factor combination, the splicing of arbitrary form easily to the content of general map, form new map.Can carry out the drawing output of arbitrary scale, any range to electronic chart.Be very easy to make amendment, shorten into the figure time.Can combine with other information sources such as satellite image, aerial photographs easily, generate new figure kind.Can utilize the information of numerical map record, derive from new data, represent landform shape as contour on the map, but the layman is difficult to understand, utilize the contour and the elevational point of electronic chart can generate digital elevation model, surface relief is showed with digital form, and can be directly perceived three-dimensional ground is the looks form expressively.This is that common topographic map can not reach expression effect.
State Bureau of Surveying and Mapping has nationwide 1: 400 ten thousand, 1: 100 ten thousand, 1: 25 ten thousand electronic chart now, also to produce 1: 5 ten thousand electronic chart from now on, these are important component parts of national fundamental geographic information system, are the carriers of other all departments' specialized information management, analysis.Each province, city's mapping and urban planning authority have produced a large amount of large scale electronic charts, as 1: 5000,1: 2000,1: 1000 etc., can be used for many departments such as urban planning and construction, traffic, tourism, auto navigation.All these numerical maps become and are operation before the computer with all departments' routine work by original a lot of maps again and again, science, accurately, directly perceived, raise the efficiency greatly.The electronic chart kind is a lot, as topographic map, grid topographic map, remote sensing image, elevation model figure, various thematic maps or the like.
GPS (Global Positioning System, global positioning system) operation principle is: navigator receives the position coordinates that at least 3 satellites transmitted in earth-circling 24 gps satellites, the position coordinates of putting down in writing in the electronic chart that itself and self are stored mates, and determines the accurate position of navigation object in electronic chart of this navigator of lift-launch with this.Navigator can be car-mounted terminal, portable navigation device, mobile phone terminal etc.Navigation object can be vehicle, pedestrian etc.After the user configured departure place and destination, navigator can be calculated guidance path, and according to calculate guidance path navigate for the user.
In the prior art, the positional information transmission is generally informed the other side by short message or mode such as make a phone call, but these modes all can not clearly be expressed positional information, and the other side can not know and accurately obtain positional information, positional information that can not accurately transmit the location on electronic chart fast.
Summary of the invention
The technical problem to be solved in the present invention is that the above-mentioned location defect exactly at prior art provides a kind of position encoded method, position encoded location, sending method and location-based service terminal, and this method can accurately be located ad-hoc location.
The invention provides a kind of position encoded method, comprising:
Determine encoding precision;
According to described encoding precision, will be converted to metric coding through, latitude information;
The metric coding of being changed is converted to three quaterdenary codings again.
Described 30 quaternarys coding is corresponding to other letter except that alphabetical o, l among numeral 0～9 and the alphabetical a～z.
Described encoding precision is 0.1 second.
Described method also comprises: will need position encoded geographic range to be divided into some districts, for each district sets the area sign, described area sign constitutes position encoded with described 30 quaternarys coding.Preferably, the geographic range that needs are position encoded is divided into 4 districts, and the area in these 4 districts is designated 5,6,7,8.
Described 30 quaternarys are encoded to four.
When certain distinguishes arbitrary position longitude or latitude when conversion surpasses four 30 quaternarys codings, be converted into four three quaterdenary codings, comprise: longitude is deducted first parameter of setting or latitude is deducted second parameter of setting, carry out decimal system conversion and three quaterdenary conversions again; Described first parameter is a sexagesimal, and described second parameter is a sexagesimal.
When certain distinguishes arbitrary position longitude or latitude when conversion surpasses four 30 quaternarys codings, be converted into four three quaterdenary codings, comprise: the decimal coded of longitude conversion is deducted the 3rd parameter of setting or the decimal coded of latitude conversion is deducted the 4th parameter of setting, carry out three quaterdenary conversions again; Described the 3rd parameter is the decimal system, and described the 4th parameter is the decimal system.
When certain distinguishes arbitrary position longitude or latitude through four 30 quaternarys codings of conversion less than, be converted into four three quaterdenary codings, comprise: longitude is added the Wucan number of setting or latitude is added the 6th parameter of setting, carry out decimal system conversion and three quaterdenary conversions again; Described Wucan number is a sexagesimal, and described the 6th parameter is a sexagesimal.
When certain distinguishes arbitrary position longitude or latitude through four 30 quaternarys codings of conversion less than, be converted into four three quaterdenary codings, comprise: the decimal coded of longitude conversion is added the 7th parameter of setting or the decimal coded of latitude conversion is added the 8th parameter of setting, carry out three quaterdenary conversions again; Described the 7th parameter is the decimal system, and described the 8th parameter is the decimal system.
The present invention also provides a kind of position encoded localization method, comprising:
Obtain the position encoded of an ad-hoc location;
Receive the positioning instruction of a described ad-hoc location;
According to the position encoded of a described ad-hoc location and ad-hoc location of being stored and position encoded corresponding relation, search an ad-hoc location of the position encoded correspondence of a described ad-hoc location, and a described ad-hoc location is located on electronic chart.
The position encoded of described acquisition one ad-hoc location obtains the position encoded of an ad-hoc location from this position service terminal or other location-based service terminals beyond this position service terminal.
The described position encoded three quaterdenary codings of changing for the latitude and longitude information of ad-hoc location.
The step that the latitude and longitude information of pairing ad-hoc location is converted to three quaterdenary codings comprises:
Determine encoding precision;
According to described encoding precision, described latitude and longitude information is converted to metric coding;
The metric coding of being changed is converted to three quaterdenary codings again.
Described position encoded can the coding by 30 quaternarys that 30 quaternarys are encoded and latitude is changed that the area identifies and longitude is changed constitute, and converts position encoded step to and is:
Determine encoding precision;
According to described encoding precision, described latitude and longitude information is converted to metric coding;
Determine the area sign; The decimal coded that longitude, latitude are changed is converted to three quaterdenary codings more respectively, and the area sign constitutes position encoded with 30 quaternarys coding of the final conversion of longitude and 30 quaternarys coding of the final conversion of latitude.
After the instruction that receives the described ad-hoc location in location, also comprise:
Judge whether the position encoded of an ad-hoc location that is obtained is present in stored position encoded, if, then according to the position encoded of a described ad-hoc location and the ad-hoc location of storage and position encoded corresponding relation, search an ad-hoc location of the position encoded correspondence of a described ad-hoc location, and a described ad-hoc location is located on electronic chart; If not, the then prompting of output encoder mistake.
The present invention also provides a kind of position encoded sending method, comprising:
Receive the transmission instruction of an ad-hoc location;
According to the ad-hoc location of a described ad-hoc location and storage and position encoded corresponding relation, search an ad-hoc location position encoded of a described ad-hoc location correspondence;
Send the position encoded of a described ad-hoc location.
The present invention also provides a kind of location-based service terminal, comprising:
Memory cell is used to store ad-hoc location and position encoded corresponding relation;
First receiving element is used to receive the position encoded of an ad-hoc location;
Second receiving element is used to receive the positioning instruction of an ad-hoc location;
First searches the unit, be used for when second receiving element receives the positioning instruction of a described ad-hoc location, according to the position encoded of a described ad-hoc location and ad-hoc location of being stored and position encoded corresponding relation, search an ad-hoc location of the position encoded correspondence of a described ad-hoc location;
Positioning unit is used for a described ad-hoc location is located on electronic chart.
Described location-based service terminal also comprises:
The 3rd receiving element is used to receive the transmission instruction of an ad-hoc location;
Second searches the unit, be used for after the 3rd receiving element receives the transmission instruction of an ad-hoc location, according to the ad-hoc location of a described ad-hoc location and storage and position encoded corresponding relation, search an ad-hoc location position encoded of a described ad-hoc location correspondence;
Transmitting element is used to send the position encoded of a described ad-hoc location.
Described location-based service terminal also comprises:
Judge module is used for after second receiving element receives the positioning instruction of a described ad-hoc location, judges whether the position encoded of an ad-hoc location that is obtained is present in store in advance position encoded;
The miscue unit, be used for judge module judge the ad-hoc location obtained position encoded when not being present in storage in advance position encoded, the prompting of output encoder mistake;
Described first searches the unit, be used for judge module judge the ad-hoc location obtained position encoded when being present in storage in advance position encoded, according to the position encoded of a described ad-hoc location and the ad-hoc location of storage and position encoded corresponding relation, search the ad-hoc location of described position encoded correspondence.
Implement technical scheme of the present invention,, therefore more can locate ad-hoc location exactly owing to carried out the position encoded of ad-hoc location.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples, in the accompanying drawing:
Fig. 1 is the flow chart of the localization method embodiment one of the position encoded information of the present invention;
Fig. 2 is the flow chart that among the present invention the latitude and longitude information of ad-hoc location is converted to position encoded embodiment one;
Fig. 3 is the flow chart that among the present invention the latitude and longitude information of ad-hoc location is converted to position encoded embodiment two;
Fig. 4 is the flow chart of the sending method embodiment one of the position encoded information of the present invention;
Fig. 5 is the logic diagram of location-based service terminal embodiment one of the present invention;
Fig. 6 is the logic diagram of location-based service terminal embodiment two of the present invention.
Embodiment
As shown in Figure 1, in the flow chart of the localization method embodiment one of position encoded information of the present invention, the localization method of this position encoded information comprises:
Step S110. obtains the position encoded of an ad-hoc location, in this step, can obtain the position encoded of an ad-hoc location from this position service terminal, also can obtain the position encoded of an ad-hoc location from other location-based service terminals beyond this position service terminal by modes such as short messages, the location-based service terminal can be equipment such as computer, mobile phone, navigator;
Step S120. receives the positioning instruction of a described ad-hoc location;
Step S130. searches an ad-hoc location of the position encoded correspondence of a described ad-hoc location according to the position encoded of a described ad-hoc location and ad-hoc location of being stored and position encoded corresponding relation;
Step S140. locatees a described ad-hoc location on electronic chart.
In step S110, can obtain the position encoded of an ad-hoc location by following mode, for example, when the use location service terminal navigates, receive gps signal, and determine current location according to gps signal, on electronic chart, show current location, because navigation object is transportable, shown current location also is to move thereupon on electronic chart, and current location available icons, cursor shown on electronic chart are represented.When navigation, if receive the position encoded instruction of obtaining current location that the user imports, it is pairing position encoded then can to obtain this current location.Again for example, display navigation cursor on electronic chart, browse cursor can move according to user's operation, as the touch-screen of taking, and slides to the right or moves with hand, and cursor will move thereupon.When browsing electronic chart, if receive the position encoded instruction of the ad-hoc location that obtains the cursor place, it is pairing position encoded then can to obtain this ad-hoc location.
Preferably, position encoded in the foregoing description can be the three quaterdenary codings of being changed by the latitude and longitude information of described position encoded pairing ad-hoc location.Should be noted that at this present invention does not limit 30 quaternarys, also can be binary system, the quaternary, hexadecimal, duotricemary notation, five hexadecimals or the like.
Fig. 2 is converted to the latitude and longitude information of ad-hoc location in the flow chart of position encoded embodiment one among the present invention, latitude and longitude information is converted to position encoded step comprises:
Step S111. determines encoding precision.For example, can determine that encoding precision is 1*10
-nSecond (n＞=0, n is an integer), preferably, present embodiment is got n=1, and encoding precision was accurate to 0.1 second.
Step S112. is converted to metric coded message according to described encoding precision with described latitude and longitude information.In this step, should be noted that at first longitude and latitude is the coordinate system that longitude and latitude is formed, and is called geographical co-ordinate system again, it is a kind of spherical coordinate system that utilizes tridimensional sphere to define tellurian space, can indicate tellurian any one position.What longitude and latitude was taked is sexagesimal, that is, and and longitude and latitude 1 degree=60 minutes=3600 seconds.If the encoding precision of determining 0.1 second, if the longitude of certain ad-hoc location is 39 degree 20 minutes and 10.0 seconds, latitude is 28 degree 45 minutes and 30.0 seconds, at first, this latitude and longitude information is converted to decimal coded, be specially: the decimal coded that longitude information is changed is: 39*60*60+20*60+10.0=140400.0, and the decimal coded that latitude information is changed is: 28*60*60+45*60+30.0=103530.0; Then, again 10 (inverses of precision 0.1) are multiply by in described decimal coded 140400.0,103530.0 respectively, that is, and 140400.0*10=1404000,103530.0*10=1035300.Multiply by the decimal coded of decimal coded that obtains after 10 for changing.
Step S113. is converted to three corresponding quaterdenary codings again with the metric coding of being changed.In this step, at first should be noted that so-called 30 quaternarys, be exactly its radix be 34, its carry rules is " meet 34 advance 1 ", its borrow rule be " ought 34 by means of 1 ".In a preferred embodiment, the corresponding relation of metric number and three quaterdenary numbers is as shown in table 1, that is, with the numeral 0～9 and alphabetical a～z in except that alphabetical o, l other letter totally 34 numbers represent three quaterdenary 34 numbers.So in this embodiment, convert metric coding 1404000 to the three quaterdenary 11qi4 of being encoded to, convert metric coding 1035300 to the three quaterdenary sbk0 of being encoded to.Should be noted that at this present invention is not limited to when selecting 30 quaternarys, 34 numbers be digital 0～9 and alphabetical a～z in other letter except that alphabetical o, l, also can select other symbol for use, as, α, β,, γ, δ etc.
Table 1
The embodiment of the invention is encoded into 34 system numerical value, and take can from 0 to 90 numeral and English alphabet remove 24 letters of o and l, can reach effect, and solve the problem that numeral 0,1 and alphabetical o and l are obscured easily by the keyboard input coding.
Fig. 3 is converted to the latitude and longitude information of ad-hoc location in the flow chart of position encoded embodiment two among the present invention, and the step of latitude and longitude information dislocation coding is comprised:
Step S116. determines encoding precision.Should be noted that this step is identical with above-mentioned steps S111, repeats no more.
Step S117. is converted to metric coding according to described encoding precision respectively with described longitude, latitude.Should be noted that this step is identical with above-mentioned steps S112, repeats no more.
Step S118. determines the area sign, the decimal coded of longitude, latitude conversion is converted to three quaterdenary codings more respectively, and the area sign constitutes position encoded with 30 quaternarys coding of the final conversion of longitude and 30 quaternarys coding of the final conversion of latitude.The geographic range that needs are position encoded is divided into some districts, for setting the area sign in each district that is divided.30 quaternarys coding of described regional sign and longitude, the final conversion of latitude and 30 quaternarys coding of the final conversion of latitude constitute position encoded.Preferably, 30 quaternarys of the final conversion of described longitude are encoded to four, and 30 quaternarys of the final conversion of described latitude are encoded to four.
The longitude and latitude that step S113 obtained three quaterdenary codings among Fig. 2 are respectively 11qi4, sbk0.30 quaternarys codings " sbk0 " are four figures, and 30 quaternarys codings " 11qi4 " are five-digit number.Convert four 30 quaternary coded decimal number value scopes to and should be 39304 to 1336335
When certain is distinguished the longitude of arbitrary position or latitude numerical value and surpasses four three quaterdenary number ranges through coding, longitude can be deducted the sexagesimal parameter M of setting, carry out decimal system conversion and three quaterdenary conversions again or latitude is deducted the sexagesimal parameter N of setting, carry out the decimal system again and change and three quaterdenary conversions; So, Zhuan Huan detailed step is: determine encoding precision; Longitude is deducted the sexagesimal parameter M of setting or latitude is deducted the sexagesimal parameter N of setting,, longitude is deducted the numerical value that numerical value behind the M or latitude deduct behind the N be converted to metric coding according to described encoding precision; The metric coding of being changed is converted to three quaterdenary codings again.Perhaps the decimal coded of longitude conversion is deducted the decimal system parameter X of setting, carry out three quaterdenary conversions again or the decimal coded of latitude conversion is deducted the decimal system parameter Y of setting, carry out three quaterdenary conversions again; Zhuan Huan detailed step is so: determine encoding precision; According to described encoding precision, will be converted to metric coding through, latitude information; The decimal coded of longitude conversion is deducted X or the decimal coded of latitude conversion is deducted Y, and the numerical value that the decimal coded that again decimal coded of longitude conversion is deducted numerical value behind the X or latitude conversion deducts behind the Y carries out the conversion of 30 quaternarys.Like this, reduced number range, thereby made longitude, the latitude in this district convert four 30 quaternary codings to.Said method need to prove, when certain was distinguished arbitrary position longitude, latitude and all surpasses four 30 quaternarys codings through coding, longitude and latitude all will convert four 30 quaternarys to by said method and encode; When certain distinguishes arbitrary position, longitude surpasses four 30 quaternary codings through coding, and latitude is encoded when being four 30 quaternarys coding, only need to convert longitude to four 30 quaternary codings by said method, 30 quaternary codings of latitude conversion itself are exactly four, do not need to change again.When certain distinguishes arbitrary position, latitude surpasses four 30 quaternary codings through coding, and longitude is encoded when being four 30 quaternarys coding, only need to convert latitude to four 30 quaternary codings by said method, 30 quaternary codings of longitude conversion itself are exactly four, do not need to change again.Certainly, the sexagesimal parameter of each district's setting or decimal system parameter can be different.
In like manner, when certain distinguishes the longitude of arbitrary position or latitude number range through four three quaterdenary number ranges of coding less than, can adopt the way that increases data area, that is: longitude can be added the sexagesimal parameter A of setting, carry out decimal system conversion and three quaterdenary conversions again or latitude is added the sexagesimal B parameter of setting, carry out the decimal system again and change and three quaterdenary conversions; Perhaps the decimal coded of longitude conversion is added the decimal system parameters C of setting, carry out three quaterdenary conversions again or the decimal coded of latitude conversion added the decimal system parameter D of setting carrying out three quaterdenary conversions again.Said method need to prove, distinguishes arbitrary position longitude, latitude when encoding all four 30 quaternarys codings of less than when certain, and longitude and latitude all will convert four 30 quaternarys codings to by said method; When certain distinguishes arbitrary position, longitude is through four 30 quaternarys codings of coding less than, and latitude is encoded when being four 30 quaternarys codings, only needs convert longitude to four 30 quaternarys codings by said method.When certain distinguishes arbitrary position, latitude is through four 30 quaternarys codings of coding less than, and longitude is encoded when being four 30 quaternarys codings, only needs convert latitude to four 30 quaternarys codings by said method.
Convert longitude, latitude to four 30 quaternary Methods for Coding and also can substitute, be not limited to said method, be not described further at this with other similar approach.
With China is that example describes, the Heilungkiang middle of the river (north latitude 53 degree 30 minute) of Chinese territory to the north of Mo River, and south is to the Zengmu Reef (north latitude 4 degree) of the south, the Nansha Islands; From the east of Heilungkiang and Wusuli River meet (east longitude 135 degree 05 minute), the west is (east longitude 73 degree 40 minutes) to the Pamir Mountain Area, stride longitude more than 60 degree.China can be divided into 4 districts, the corresponding area sign in each district, can from 0 to 90 numeral and English alphabet 24 letters removing o and l choose 4 characters arbitrarily and represent this 4 districts, preferably select 5,6,7,8 for use; Just be meant and use four zones of 5,6,7,8 four digitized representations respectively.Encode and be made of four 30 quaternarys codings that the area identifies and final four 30 quaternarys of changing of longitude are encoded and latitude is finally changed in the final position, each is position encoded to have guaranteed each position correspondence.
The embodiment of the invention is encoded into 34 system numerical value, and take can from 0 to 90 numeral and English alphabet remove 24 letters of o and l, can reach effect, and solve the problem that numeral 0,1 and alphabetical o and l are obscured easily by the keyboard input coding.
Fig. 4 is the flow chart of the sending method embodiment one of the position encoded information of the present invention, and the square delivery method of this position encoded information comprises:
Step S410. receives the transmission instruction of an ad-hoc location;
Step S420. is according to the ad-hoc location of a described ad-hoc location and storage and position encoded corresponding relation, searches an ad-hoc location position encoded of a described ad-hoc location correspondence;
Step S430. sends the position encoded of a described ad-hoc location.
In addition, need to prove that the latitude and longitude information to ad-hoc location during the localization method of above-mentioned position encoded information is preferably implemented is carried out the sending method that Methods for Coding is equally applicable to coded message, do not do at this and give unnecessary details.
Fig. 5 is the logic diagram of location-based service terminal embodiment one of the present invention, and this location-based service terminal comprises:
First receiving element 200 is used to receive the position encoded of an ad-hoc location;
Second receiving element 300 is used to receive the positioning instruction of an ad-hoc location;
Fig. 6 is the logic diagram of location-based service terminal embodiment two of the present invention, compares location-based service terminal embodiment one shown in Figure 5, and this location-based service terminal also comprises:
The 3rd receiving element 600 is used to receive the transmission instruction of an ad-hoc location;
Second searches unit 700, be used for after the 3rd receiving element receives the transmission instruction of an ad-hoc location, according to the ad-hoc location of a described ad-hoc location and storage and position encoded corresponding relation, search an ad-hoc location position encoded of a described ad-hoc location correspondence;
Transmitting element 800 is used to send the position encoded of a described ad-hoc location.
In addition, preferably, search at second receiving element 300 and first and also to comprise judge module between the unit 400, this judge module is used for after second receiving element 300 receives the positioning instruction of a described ad-hoc location, judges whether the position encoded of an ad-hoc location that is obtained is present in store in advance position encoded.This location-based service terminal also can comprise the miscue unit, this miscue unit be used for judge module judge the ad-hoc location obtained position encoded when not being present in storage in advance position encoded, the prompting of output encoder mistake.Among this embodiment first search unit 400 be used for judge module judge the ad-hoc location obtained position encoded when being present in storage in advance position encoded, according to the position encoded of a described ad-hoc location and the ad-hoc location of storage and position encoded corresponding relation, search the ad-hoc location of described position encoded correspondence.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within the claim scope of the present invention.
Claims (10)
1. a position encoded localization method is characterized in that, comprising:
Obtain the position encoded of an ad-hoc location, described position encoded 30 quaternarys coding for the longitude and latitude conversion;
Receive the positioning instruction of a described ad-hoc location;
According to the position encoded of a described ad-hoc location and ad-hoc location of being stored and position encoded corresponding relation, search an ad-hoc location of the position encoded correspondence of a described ad-hoc location, and a described ad-hoc location is located on electronic chart.
2. position encoded localization method according to claim 1 is characterized in that, obtains the position encoded of an ad-hoc location from this position service terminal or other location-based service terminals beyond this position service terminal.
3. position encoded localization method according to claim 1 is characterized in that, described position encoded three quaterdenary codings for being changed by longitude, the latitude of described position encoded pairing ad-hoc location.
4. position encoded localization method according to claim 3 is characterized in that, the step that longitude, the latitude of pairing ad-hoc location is converted to three quaterdenary codings comprises:
Determine encoding precision;
According to described encoding precision, longitude, the latitude of described ad-hoc location is converted to metric coding;
The metric coding of being changed is converted to again three quaterdenary position encoded.
5. position encoded localization method according to claim 3, it is characterized in that, described position encoded four 30 quaternarys of being changed by area sign and longitude are encoded and four 30 quaternary codings of latitude conversion constitute, and convert position encoded step to be:
Determine encoding precision;
According to described encoding precision, longitude, the latitude of described ad-hoc location is converted to metric coding;
The metric coding of being changed is converted to three quaterdenary codings again;
The geographic range that needs are position encoded is divided into some districts, for setting the area sign in each district that is divided;
Judge respectively whether three quaterdenary codings of arbitrary ad-hoc location equal four in each district, if equal four, then the area of this ad-hoc location location sign and described three quaterdenaryly is encoded to the position encoded of this ad-hoc location; If surpass four of four or less thaies, then with three quaterdenary position encoded be converted to four three quaterdenary position encoded, four 30 position encoded these ad-hoc locations of formation of the quaternary of the area of this ad-hoc location location sign and final conversion position encoded.
6. according to each described position encoded localization method of claim 1-5, it is characterized in that, after the instruction that receives the described ad-hoc location in location, also comprise:
Judge whether the position encoded of an ad-hoc location that is obtained is present in stored position encoded, if, then according to the position encoded of a described ad-hoc location and the ad-hoc location of storage and position encoded corresponding relation, search an ad-hoc location of the position encoded correspondence of a described ad-hoc location, and a described ad-hoc location is located on electronic chart; If not, the then prompting of output encoder mistake.
7. a position encoded sending method is characterized in that, comprising:
Receive the transmission instruction of an ad-hoc location;
According to the ad-hoc location of a described ad-hoc location and storage and position encoded corresponding relation, search an ad-hoc location position encoded of a described ad-hoc location correspondence, described position encoded 30 quaternarys coding for the longitude and latitude conversion;
Send the position encoded of a described ad-hoc location.
8. a location-based service terminal is characterized in that, comprising:
Memory cell is used to store ad-hoc location and position encoded corresponding relation, described position encoded 30 quaternarys coding for the longitude and latitude conversion;
First receiving element is used to receive the position encoded of an ad-hoc location;
Second receiving element is used to receive the positioning instruction of an ad-hoc location;
First searches the unit, be used for when second receiving element receives the positioning instruction of a described ad-hoc location, according to the position encoded of a described ad-hoc location and ad-hoc location of being stored and position encoded corresponding relation, search an ad-hoc location of the position encoded correspondence of a described ad-hoc location;
Positioning unit is used for a described ad-hoc location is located on electronic chart.
9. location-based service terminal according to claim 8 is characterized in that, also comprises:
The 3rd receiving element is used to receive the transmission instruction of an ad-hoc location;
Second searches the unit, be used for after the 3rd receiving element receives the transmission instruction of an ad-hoc location, according to the ad-hoc location of a described ad-hoc location and storage and position encoded corresponding relation, search an ad-hoc location position encoded of a described ad-hoc location correspondence;
Transmitting element is used to send the position encoded of a described ad-hoc location.
10. according to Claim 8 or 9 described location-based service terminals, it is characterized in that, also comprise:
Judge module is used for after second receiving element receives the positioning instruction of a described ad-hoc location, judges whether the position encoded of an ad-hoc location that is obtained is present in store in advance position encoded;
The miscue unit, be used for judge module judge the ad-hoc location obtained position encoded when not being present in storage in advance position encoded, the prompting of output encoder mistake;
Described first searches the unit, be used for judge module judge the ad-hoc location obtained position encoded when being present in storage in advance position encoded, according to the position encoded of a described ad-hoc location and the ad-hoc location of storage and position encoded corresponding relation, search the ad-hoc location of described position encoded correspondence.
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| CN101308026A (en) * | 2008-07-08 | 2008-11-19 | 凯立德欣技术（深圳）有限公司 | Method and system matching with mobile phone for automatic navigation |
| CN101315419A (en) * | 2007-06-01 | 2008-12-03 | 朱建宇 | Discrete tracing positional code |
| CN101487718A (en) * | 2009-02-13 | 2009-07-22 | 凯立德欣技术（深圳）有限公司 | Navigation system and keyword inputting method |
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| CN101315419A (en) * | 2007-06-01 | 2008-12-03 | 朱建宇 | Discrete tracing positional code |
| CN101308026A (en) * | 2008-07-08 | 2008-11-19 | 凯立德欣技术（深圳）有限公司 | Method and system matching with mobile phone for automatic navigation |
| CN101487718A (en) * | 2009-02-13 | 2009-07-22 | 凯立德欣技术（深圳）有限公司 | Navigation system and keyword inputting method |
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