CN103353600A - Information processing method for satellite navigation system, information processing module and terminal - Google Patents
Information processing method for satellite navigation system, information processing module and terminal Download PDFInfo
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- CN103353600A CN103353600A CN2013103361223A CN201310336122A CN103353600A CN 103353600 A CN103353600 A CN 103353600A CN 2013103361223 A CN2013103361223 A CN 2013103361223A CN 201310336122 A CN201310336122 A CN 201310336122A CN 103353600 A CN103353600 A CN 103353600A
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Abstract
Provided in the invention is an information processing method for satellite navigation system. The method comprises the following steps: according to parameters like an elevation angle and an azimuth angel formed between a user terminal and a visible satellite, calculating a piercing point coordinate corresponding to the satellite; obtaining surrounding three or more than three grid point numbers according to the piercing point coordinate; and sending delay information corresponding to the obtained three or more than three grid point numbers to the user terminal. According to the processing method, data volume transmission of user terminal positioning auxiliary information can be substantially reduced and the user terminal can obtain reliable positioning auxiliary information with the minimum data volume, thereby improving the service quality of the mobile communication. Meanwhile, the invention also provides an information processing module of a Beidou satellite navigation system and a terminal.
Description
Technical field
The present invention relates to the satellite navigation field, particularly a kind of information processing method for satellite navigation system, message processing module and terminal.
Background technology
Development along with airmanship and the communication technology, people are also more and more higher to the requirement of location-based service, in order to improve the service quality of position, realize quick and precisely location, airmanship is combined with mobile communication, utilize existing mobile network, by the base station positioning auxiliary information is sent to user terminal, to improve location efficiency and accuracy, be A-BDS in China.And ionospheric correction is also listed in wherein, adopt graticule mesh ionosphere to revise bearing accuracy.
Graticule mesh ionospheric corrections model, exactly the grid that draws as the interval is spent take 5 respectively at longitude and latitude direction in certain zone, each grid points has corresponding vertical delay and vertical delay error extension, and these two parameters can obtain corresponding value by corresponding table lookup.Ionospheric correction adopts bilinear interpolation method to calculate the ionosphere delay of this puncture site namely according to vertical delay and the vertical delay error extension of 4 nearest around puncture site grid points.And the vertical delay of possessive case site accounts for 9*320=2880 bit altogether, the vertical delay error extension accounts for 4*320=1280 bit altogether, if these information are all sent to user terminal, the user also can't utilize this full detail, then cause the waste of floating resources, also will impact the service quality of mobile communication.
Summary of the invention
Based on above-mentioned situation, the present invention proposes a kind of information processing method for satellite navigation system, the method is mainly utilized puncture site on every side vertical delay and the vertical delay error extension of 3 or 3 nearest above grid points, calculate the ionosphere delay of this puncture site, require the base station to try not to transmit unnecessary information, and then greatly save flow, improve the service quality of mobile communication.
A kind of information processing method for satellite navigation system comprises step:
According to calculation of parameter puncture site coordinates (longitude and latitude) corresponding with this satellite such as the formed elevation angle of user terminal and visible satellite and position angles; Obtain the numbering of the grid points more than three or three on every side according to this puncture site coordinate; Send institute and obtain the deferred message of the grid points numbering correspondence more than three or three to described user terminal.
Described grid points numbering more than three or three is at least from three different directions of puncture site.
Described three grid points numberings obtaining are from the place grid of puncture site.
Described user terminal calculates the ionosphere delay at this puncture site place according to the deferred message of the grid points numbering correspondence of obtain more than three or three.
When obtaining deferred message corresponding to the above grid points numbering of three or three when effective, the ionosphere delay at puncture site place then:
Wherein, the grid points vertical ionosphere delay of broadcasting is used
, the using respectively apart from weights of a puncture site and N grid points
Expression.
The present invention has used the Beidou satellite navigation system information processing chip such as above-mentioned method.
The present invention has also used the Beidou satellite navigation system message processing module of described Beidou satellite navigation system signal processing chip.
A kind of terminal of having used above-mentioned Beidou satellite navigation system message processing module.
With respect to prior art, a kind of information processing method for satellite navigation system provided by the invention is according to calculation of parameter puncture site coordinates corresponding with this satellite such as the formed elevation angle of user terminal and visible satellite and position angles; Obtain the numbering of the grid points more than three or three on every side according to this puncture site coordinate; Send institute and obtain the deferred message of the grid points numbering correspondence more than three or three to described user terminal, can greatly reduce the data volume transmission of user terminal positioning auxiliary information, allow user terminal get access to reliable positioning auxiliary information with minimum data volume, thereby improved the service quality of mobile communication.
Description of drawings
Fig. 1 is the schematic flow sheet of a kind of information processing method embodiment for satellite navigation system of the present invention;
Fig. 2 is a kind of information processing method embodiment ionosphere puncture site geometric representation for satellite navigation system of the present invention;
Fig. 3 is a kind of information processing method embodiment user puncture site and grid points synoptic diagram for satellite navigation system of the present invention;
Fig. 4 is a kind of information processing method embodiment puncture site and synoptic diagram that concerns grid points for satellite navigation system of the present invention.
Embodiment
Below in conjunction with wherein preferred embodiments the present invention program is described in detail.
The schematic flow sheet of a kind of information processing method embodiment for satellite navigation system of information processing method of the present invention has been shown among Fig. 1.
As shown in Figure 1, the method in the present embodiment comprises step:
S101: the puncture site coordinate (longitude and latitude) corresponding with this satellite with calculation of parameter such as the formed elevation angle of visible satellite, position angles according to the user;
By other supplementarys such as ephemeris of Internet Transmission, determine that for the visible satellite of user terminal the line of terminal and visible satellite is had individual intersection point in ionosphere, be referred to as puncture site, as shown in Figure 2.
The puncture site computing formula is as follows:
If the geographical latitude and longitude coordinates of puncture site (
), the geographical latitude and longitude coordinates of user (
), unit is radian, central angle is used
Expression is the angle between user, the earth's core and the puncture site, position angle
With representing, for arrive clockwise the angle of user and puncture site line, the elevation angle at user's point place north orientation
With representing that for prolonging earth surface at the tangent line at user's point place and the angle between the puncture site, earth radius is used
Expression, maximum electron density place, ionosphere uses according to the vertical height of the earth
Expression.Wherein,
When
And
Perhaps
Otherwise,
S102: obtain three or three above grid points on every side according to this puncture site coordinate IGP number;
Because the ionosphere graticule mesh coverage of big-dipper satellite is east longitude 70 ~ 145 degree, north latitude 7.5 ~ 55 degree.Divide by its coverage being carried out grid, the grid after the division also gives suitable numbering, can allow the data management of obtaining more be convenient to management and calculating.Concrete division methods is: east longitude 70 ~ 145 degree, and north latitude 10 ~ 55 degree zones are divided by longitude and latitude 5 * 5 degree, form 160 grid points, and grid points numbering (IGP) is 1 ~ 160.East longitude 70 ~ 145 degree, north latitude 7.5 ~ 52.5 degree zones are divided by longitude and latitude 5 * 5 degree, form 160 grid points, and grid points numbering (IGP) is 161 ~ 320.Dividing so then, minimum precision is 2.5 * 5 degree, totally 320 grid points.The concrete division shown in table 1-1, table 1-2.
Table 1-1 IGP number table
Table 1-2 IGP number table
Wherein, when IGP numbering corresponding longitude and latitude less than or equal to 160 time be:
Longitude
Latitude
When IGP numbering corresponding longitude and latitude greater than 160 time is:
Longitude
Latitude
Wherein INT (*) expression rounds downwards.
Each grid points ionosphere information comprise the grid points vertical delay (
) and error extension (GIVEI), take altogether 13 bits.Information is arranged and is defined as follows:
Table 2 ionosphere information definition table
Be the ionosphere vertical delay of i grid points, represent that with distance scale factor is 0.125, unit is rice, and scope is 0 ~ 63.625 meter, and when state was " 111111110 " (=63.750 meters), IGP was not monitored in expression; When state is " 111111111 " (=63.875 meters), represent " unavailable.”
Grid points ionosphere vertical delay correction error (GIVE) is used for describing the precision that the grid points ionosphere delay corrects, and characterizes with grid points ionosphere vertical delay correction error extension (GIVEI).The relation of GIVEI and GIVE sees Table 3.
Table 3 GIVEI definition list
Ionosphere vertical delay and delay error index according to grid points, the user can select puncture site adjacent or close effective grid points data on every side, the designed, designed model, the ionospheric correction at interpolation observation satellite puncture site place, user's puncture site institute around graticule mesh has at least 3 grid points to be designated when effective, can adopt bilinear interpolation method to calculate the ionosphere delay at this puncture site place according to the vertical ionosphere delay of broadcasting on these effective grid points, this example be to have 4 effective grid points as example.The directiveness fitting algorithm is as follows, and concrete model as shown in Figure 3.
Fig. 3 has provided the synoptic diagram of user's puncture site and place grid points, and wherein IPP is receiver user and the geographic position at puncture site place, a certain the corresponding ionosphere of satellite line, with geographical longitude and latitude (
) expression.On every side the position of 4 grid points use respectively (
) expression, the vertical ionosphere delay that grid points is broadcast is used
Expression, the using respectively apart from weights of puncture site and four grid points
Expression.
Definition
,
Then weights are respectively:
If should epoch of observation some graticule mesh be designated invalidly, then its corresponding weights are 0.
Because when obtaining three or three above grid points IGP, the position that they are distributed in puncture site can different result occur so that it obtains the ionosphere delay computational accuracy, from puncture site more close to, it is more even to distribute, number of effective points is more, then its computational accuracy is just higher, and the effect of its auxiliary positioning is just better; On the contrary, distribute more concentratedly, its computational accuracy can relative reduce.As described in Figure 4, puncture site A is arranged in net point and is numbered 12,172,22,182 formed grids among the figure.At this moment, puncture site A has upper and lower, left and right, upper left, lower-left, upper right, bottom right, 8 different directions, if the formed angle of puncture site A and grid points does not belong to these eight directions, then be as the criterion with the immediate direction of angle that forms, the angle that forms such as puncture site A and net point 33 is lower than 22.5 ° with the angle of horizontal direction, then concludes and arrives " right side " this direction.Net point around puncture site A more than three or three and the directional information of its formation, when comprising at least three of this eight directions, the information of obtaining distributes more even, its computational accuracy can be higher, and if only obtain that one or two directional precision can hang down relatively in these eight directions.Simultaneously, four grid points numberings obtaining as puncture site A are when forming the grid of puncture site, and its precision is the highest.Be arranged in net point such as puncture site A and be numbered 12,172,22,182 formed grids, if these four points are all effective, then its ionosphere delay precision that calculates is for the highest.
S103: send institute and obtain the deferred message of the grid points numbering correspondence more than three or three to described user terminal.
Each grid points has corresponding vertical delay and vertical delay error extension, vertical delay accounts for 9*320=2880 bit altogether, the vertical delay error extension accounts for 4*320=1280 bit altogether, if these information are all sent to user terminal, and the user also can't utilize this full detail, then cause the waste of floating resources, service quality to mobile communication also will impact, so according to the user side request, effective, limited grid points information is sent to user side, rationally utilize Internet resources and positioning auxiliary information.
Further, the present invention has used the Beidou satellite navigation system signal processing chip such as above-mentioned method.
Further, the present invention has used the Beidou satellite navigation system signal processing module of described Beidou satellite navigation system signal processing chip.
Further, the present invention has also used the terminal of above-mentioned Beidou satellite navigation system signal processing module.
The above embodiment has only expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to claim of the present invention.Should be pointed out that for the person of ordinary skill of the art without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (8)
1. an information processing method that is used for satellite navigation system is characterized in that, comprises step: according to calculation of parameter puncture site coordinates corresponding with this satellite such as the formed elevation angle of user terminal and visible satellite and position angles; Obtain the numbering of the grid points more than three or three on every side according to this puncture site coordinate; Send institute and obtain the deferred message of the grid points numbering correspondence more than three or three to described user terminal.
2. information processing method according to claim 1 is characterized in that, described grid points numbering more than three or three is at least from three different directions of puncture site.
3. information processing method according to claim 2 is characterized in that, described three grid points numberings obtaining are from the place grid of puncture site.
4. described information processing method is characterized in that according to claim 1-3, and described user terminal calculates the ionosphere delay at this puncture site place according to the deferred message of the grid points numbering correspondence of obtain more than three or three.
5. information processing method according to claim 4 is characterized in that, when obtaining the above grid points numbering of three or three when effective to right deferred message, and the ionosphere delay at puncture site place then:
Wherein, the grid points vertical ionosphere delay of broadcasting is used
Expression, the using respectively apart from weights of a puncture site and N grid points
Expression.
6. Beidou satellite navigation system information processing chip of having used such as method as described in the claim 1-5.
7. one kind comprises the as claimed in claim 6 Beidou satellite navigation system message processing module of process chip.
8. used the as claimed in claim 7 terminal of Beidou satellite navigation system message processing module for one kind.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014198181A1 (en) * | 2013-06-13 | 2014-12-18 | 中兴通讯股份有限公司 | A network-aided method, terminal and network side device for satellite navigation and positioning |
| CN106101209A (en) * | 2016-06-08 | 2016-11-09 | 山东天星北斗信息科技有限公司 | A kind of difference Platform Server network architecture method to set up based on grid |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101487883A (en) * | 2009-03-09 | 2009-07-22 | 北京航空航天大学 | Ionospheric layer grid regulation method suitable for multi-module satellite navigation system |
| CN102305935A (en) * | 2011-07-26 | 2012-01-04 | 上海埃威航空电子有限公司 | Method and system for improving positioning precision by multiple-satellite navigation star based enhancement system |
| CN102323572A (en) * | 2011-06-14 | 2012-01-18 | 北京航空航天大学 | A kind of satellite navigation signals ionosphere differential correcting number estimation method |
| CN103076615A (en) * | 2011-12-27 | 2013-05-01 | 东莞市泰斗微电子科技有限公司 | Ionized layer delaying estimation method of Beidou navigation satellite system and corresponding receiving device |
-
2013
- 2013-08-05 CN CN2013103361223A patent/CN103353600A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101487883A (en) * | 2009-03-09 | 2009-07-22 | 北京航空航天大学 | Ionospheric layer grid regulation method suitable for multi-module satellite navigation system |
| CN102323572A (en) * | 2011-06-14 | 2012-01-18 | 北京航空航天大学 | A kind of satellite navigation signals ionosphere differential correcting number estimation method |
| CN102305935A (en) * | 2011-07-26 | 2012-01-04 | 上海埃威航空电子有限公司 | Method and system for improving positioning precision by multiple-satellite navigation star based enhancement system |
| CN103076615A (en) * | 2011-12-27 | 2013-05-01 | 东莞市泰斗微电子科技有限公司 | Ionized layer delaying estimation method of Beidou navigation satellite system and corresponding receiving device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014198181A1 (en) * | 2013-06-13 | 2014-12-18 | 中兴通讯股份有限公司 | A network-aided method, terminal and network side device for satellite navigation and positioning |
| CN106101209A (en) * | 2016-06-08 | 2016-11-09 | 山东天星北斗信息科技有限公司 | A kind of difference Platform Server network architecture method to set up based on grid |
| CN106101209B (en) * | 2016-06-08 | 2019-09-10 | 山东天星北斗信息科技有限公司 | A kind of difference Platform Server network architecture setting method based on grid |
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Application publication date: 20131016 |