CN104142507A - GpsOne indoor positioning circular error probable obtaining method and device - Google Patents
GpsOne indoor positioning circular error probable obtaining method and device Download PDFInfo
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- CN104142507A CN104142507A CN201310170722.7A CN201310170722A CN104142507A CN 104142507 A CN104142507 A CN 104142507A CN 201310170722 A CN201310170722 A CN 201310170722A CN 104142507 A CN104142507 A CN 104142507A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
- G01S19/13—Receivers
- G01S19/23—Testing, monitoring, correcting or calibrating of receiver elements
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- Computer Networks & Wireless Communication (AREA)
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- General Physics & Mathematics (AREA)
- Position Fixing By Use Of Radio Waves (AREA)
Abstract
The invention discloses a gpsOne indoor positioning circular error probable obtaining method and device, and relates to the technical field of mobile internet application. According to the method, an indoor positioning process and a positioning process of an impendent GPS receiver are simulated by means of two stages which are an initial positioning process and a final positioning process in a gpsOne outdoor positioning process, and a truth value error of an indoor positioning test is simulated by means of the horizontal distance between an initial positioning result point and a final positioning result point. Indoor positioning circular error probable of an object region is obtained by processing and counting positioning log files generated by a positioning platform, and a great deal of test cost can be saved.
Description
Technical field
The present invention relates to mobile Internet applied technical field, particularly a kind of gpsOne indoor positioning circular proable error acquisition methods and device.
Background technology
Along with mobile Internet and smart mobile phone technical development and application, location service is regarded as the coming years will the explosive value-added service increasing.Various location technologies occur in a large number, and the advantage that wherein gpsOne technology is high with its positioning precision, position success rate is high has obtained large-scale application in running fix field.
For promoting location quality of service, operator needs often to measure the positioning service lateral error under various environment.
When gpsOne positioning service quality test, generally can provide reference coordinate (true value point coordinate) with a high-precision GPS receiver.By benchmark coordinate and mobile phone, locate the coordinate returning results, calculate the true value error of this assignment test.By a large amount of test cases, can count the running fix circular proable error (Circular Error Probable, CEP) of this area.Said method is applicable to the error statistics under outdoor open environment.
But, under indoor environment, conventionally do not receive GPS(Global Positioning System, GPS) and signal, GPS receiver cannot provide reference coordinate, lateral error that therefore cannot compute location test.
For measurement and positioning error under indoor environment, need to obtain in advance the true longitude and latitude of measured point.Common way is to utilize the electronic chart of pinpoint accuracy, and the mode of getting by mouse point obtains the coordinate of certain test point.For the area that there is no high-precision electronic map, can on the roof of building, manually gather gps coordinate, or gather after gps coordinate in the outside of building, by coordinate modification algorithm, calculate the coordinate of indoor test point.But this mode inefficiency, need to drop into a large amount of human resources; And no matter be electronic chart method, or GPS revised law, all can introduce extra true value point tolerance, cause the confidence level of statistics to decline.
Summary of the invention
The present inventor finds to have problems in above-mentioned prior art, and therefore at least one problem in described problem, has proposed a kind of new technical scheme.
An object of the present invention is to provide a kind of technical scheme of obtaining for gpsOne indoor positioning circular proable error.
According to a first aspect of the invention, provide a kind of gpsOne indoor positioning circular proable error acquisition methods, having comprised:
According to the daily record of gpsOne locating platform, selecting whole align_type in target area is AGPS(Assisted Global Positioning System, auxiliary global satellite positioning system) locating events;
Obtain whole anchor point in each AGPS locating events and the first horizontal range between anchor point, as AGPS locating events in target area just-whole positioning error, be called PF error;
According to the distribution situation of each AGPS locating events PF error in target area, obtain the circular proable error of the gpsOne indoor positioning in target area.
Alternatively, according to the circular proable error of the gpsOne indoor positioning in the distribution situation acquisition target area of the PF error of each AGPS locating events in target area, comprise:
According to the distribution of PF error, obtain the gpsOne indoor positioning circular proable error under CEP68 condition in target area.
Alternatively, according to the distribution of distance error, obtaining the gpsOne indoor positioning circular proable error under CEP68 condition in target area comprises:
The ascending sequence of numerical value by the PF error of all AGPS locating events in target area, obtains a locating events sequence;
The number that records of locating events sequence is multiplied by 0.68 and round up, obtains sequence number N;
Choose the record that in described locating events sequence, recording mechanism is N, this records corresponding PF error numerical value and is under CEP68 condition the circular proable error of gpsOne indoor positioning in described target area.
Alternatively, obtain whole anchor point in each AGPS locating events and just the horizontal range between anchor point comprise:
Obtain the daily record of all locating events that in gpsOne locating platform target area, whole align_type is AGPS;
Daily record to locating events is resolved, and obtains the longitude and latitude of whole anchor point and first anchor point;
Calculate described whole anchor point and the described just earth spherical distance between anchor point, i.e. the PF error of this locating events.
Alternatively, according to cdma wireless network parameter in the daily record of gpsOne locating platform, filter target area.
According to a further aspect in the invention, provide a kind of gpsOne indoor positioning circular proable error acquisition device, comprising:
Locating events screening unit, for selecting from the daily record of gpsOne locating platform the locating events that in target area, whole align_type is AGPS;
Distance error acquiring unit, for obtaining the whole anchor point of each AGPS locating events and the first horizontal range between anchor point, as AGPS locating events in target area just-whole positioning error, be called PF error;
Positioning error determining unit, for obtaining the circular proable error of the gpsOne indoor positioning in target area according to the distribution situation of the PF error of each AGPS locating events in target area.
Alternatively, positioning error determining unit obtains the gpsOne indoor positioning circular proable error under CEP68 condition in target area according to the distribution of PF error.
Alternatively, positioning error determining unit comprises:
PF error order module, for by ascending sequence of PF error of each AGPS locating events, obtains a locating events sequence;
Sequence number acquisition module, for the number that records of locating events sequence is multiplied by 0.68 and round up, obtains sequence number N;
Error location module, for the corresponding PF error of the position the record that is N using locating events sequence sequence number the circular proable error of gpsOne indoor positioning in target area under CEP68 condition.
Alternatively, distance error acquiring unit comprises:
First anchor point determination module, for obtaining the AGPS locating events first anchor point that just position fixing process obtains based on architecture algorithm of gpsOne locating platform;
Whole anchor point determination module, calculates for obtaining the whole position fixing process of AGPS locating events of gpsOne locating platform the whole anchor point obtaining based on AGPS location algorithm;
Error distance determination module, for calculating the earth spherical distance between whole anchor point and first anchor point.
Alternatively, locating events screening unit is according to target area in the daily record of cdma wireless network parameter filtration gpsOne locating platform.
An advantage of the present invention is, by processing and statistics to the location journal file of locating platform generation, simulate the indoor positioning circular proable error of target area, with a kind of simple data statistical approach, substitute heavy a large amount of on-the-spot indoor test work, save a large amount of testing costs.
By the detailed description to exemplary embodiment of the present invention referring to accompanying drawing, it is clear that further feature of the present invention and advantage thereof will become.
Accompanying drawing explanation
The accompanying drawing that forms a part for instructions has been described embodiments of the invention, and together with the description for explaining principle of the present invention.
With reference to accompanying drawing, according to detailed description below, can more be expressly understood the present invention, wherein:
Fig. 1 illustrates according to the process flow diagram of an embodiment of gpsOne indoor positioning circular proable error acquisition methods of the present invention.
Fig. 2 illustrates according to the process flow diagram of another embodiment of gpsOne indoor positioning circular proable error acquisition methods of the present invention.
Fig. 3 illustrates according to the structural drawing of an embodiment of gpsOne indoor positioning circular proable error acquisition device of the present invention.
Fig. 4 illustrates according to the structural drawing of another embodiment of gpsOne indoor positioning circular proable error acquisition device of the present invention.
Embodiment
Now with reference to accompanying drawing, describe various exemplary embodiment of the present invention in detail.It should be noted that: unless illustrate in addition, the parts of setting forth in these embodiments and positioned opposite, numeral expression formula and the numerical value of step do not limit the scope of the invention.
, it should be understood that for convenience of description, the size of the various piece shown in accompanying drawing is not to draw according to actual proportionate relationship meanwhile.
To the description only actually of at least one exemplary embodiment, be illustrative below, never as any restriction to the present invention and application or use.
For the known technology of person of ordinary skill in the relevant, method and apparatus, may not discuss in detail, but in suitable situation, technology, method and apparatus should be regarded as authorizing a part for instructions.
In all examples with discussing shown here, it is exemplary that any occurrence should be construed as merely, rather than as restriction.Therefore, other example of exemplary embodiment can have different values.
It should be noted that: in similar label and letter accompanying drawing below, represent similar terms, therefore, once be defined in an a certain Xiang Yi accompanying drawing, in accompanying drawing subsequently, do not need it to be further discussed.
The basic thought of this patent is: utilize two stages in gpsOne outdoor positioning process--first position fixing process (pre-fix) and whole position fixing process (final-fix) are simulated the position fixing process of indoor positioning process and independent GPS receiver, carry out the true value error of emulation indoor positioning test by the horizontal range of just-whole positioning result point.Like this, by screening and processing to the location daily record of gpsOne locating platform generation, obtain rapidly the indoor positioning circular proable error CEP of target area.
In gpsOne outdoor positioning flow process, the position calculation of terminal is divided two stages: first position fixing process and whole position fixing process.In first position fixing process, locating platform, according to the base station ranging information of terminal to report, is used the initial position of architecture algorithm computing terminal; At whole positioning stage, locating platform, according to the satellite pseudorange information of terminal to report, is used the final position of AGPS location algorithm computing terminal.This shows: gpsOne outdoor positioning process has comprised an indoor positioning process and an AGPS position fixing process.Because the location algorithm adopting in the first position fixing process of AGPS event is identical with the gpsOne location algorithm in indoor situation, and the positioning precision of AGPS algorithm is consistent with the precision of independent GPS receiver, therefore, under this scene, just-whole positioning result deviation is just equivalent to the result error of indoor positioning and independent GPS receiver location, i.e. true value error during indoor positioning test.
Fig. 1 illustrates according to the process flow diagram of an embodiment of gpsOne indoor positioning circular proable error acquisition methods of the present invention.
As shown in Figure 1, step 102, selects according to the daily record of gpsOne locating platform the locating events that in target area, whole align_type is AGPS.To journal file, can according to cdma wireless network parameter, filter out the daily record of particular locality, for example, Shanghai-Pudong-flowers and trees area, and ignore other regional daily records.
Step 104, obtains whole anchor point in each AGPS locating events and the first horizontal range between anchor point, as AGPS locating events in target area just-whole positioning error, be called PF error.For example, obtain the daily record of all locating events that in gpsOne locating platform target area, whole align_type is AGPS; Daily record to locating events is resolved, and obtains the longitude and latitude of whole anchor point and first anchor point; Calculate whole anchor point and the described just earth spherical distance between anchor point, i.e. the PF error of this locating events.
Step 106, according to the circular proable error of the gpsOne indoor positioning in the distribution situation acquisition target area of the PF error of each AGPS locating events in target area.For example, according to the distribution of PF error, obtain the gpsOne indoor positioning circular proable error under CEP68 condition in target area.
In above-described embodiment, statistical problem for running fix under indoor environment (location based on base station) error, a kind of error analysis method that can substitute indoor positioning on-the-spot test work has been proposed, by processing and statistics to the location journal file of locating platform generation, can draw the indoor positioning circular proable error of target area, with a kind of simple data statistical approach, substitute heavy a large amount of on-the-spot indoor test work, can save a large amount of testing costs.
Fig. 2 illustrates according to the process flow diagram of another embodiment of gpsOne indoor positioning circular proable error acquisition methods of the present invention.
As shown in Figure 2, step 202, the journal file (as Fix file) that gpsOne locating platform generates reads in.
Step 204, filters out the position the record that whole align_type is AGPS.The journal file that gpsOne locating platform is generated screens, and only selecting whole align_type is the relevant daily record of the locating events of AGPS, journal file in the middle of generating.
Step 206, calculates end-first positioning result deviation (PF error) in each position the record.Interim date will file is processed, calculated the whole anchor point of each locating events and the earth spherical distance between first anchor point.
Step 208, by PF error data writing table.In the middle of the record of PF error write error statistical table, field name is " indoor error ".
Step 210, according to tables of data statistics circular proable error.Specifically comprise:
After middle daily record file processing, error statistics form is carried out to ascending sequence according to " indoor error " field; All AGPS locating events in target area are sorted according to the numerical value of described PF error is ascending, obtain a locating events sequence;
With the number that records of locating events sequence in error statistics form, be multiplied by 0.68, and round up, obtain Integer N;
The N bar record of inquiry error statistics table, " indoor error " value of field in this record is the circular proable error (under CEP68 condition) of this area indoor positioning.
In above-described embodiment, by PF error statistics method, obtain corresponding circular proable error, not yet occurred in the prior art such processing scheme, embodied the new wound of this scheme.
Fig. 3 illustrates according to the structural drawing of an embodiment of gpsOne indoor positioning circular proable error acquisition device of the present invention.
As shown in Figure 3, this device comprises: locating events screening unit 31, for selecting from the daily record of gpsOne locating platform the locating events that in target area, whole align_type is AGPS; Distance error acquiring unit 32, for obtaining the whole anchor point of each AGPS locating events and the first horizontal range between anchor point, as AGPS locating events in target area just-whole positioning error, be called PF error; Positioning error determining unit 33, for obtaining the circular proable error of the gpsOne indoor positioning in target area according to the distribution situation of the PF error of each AGPS locating events in target area.For example, locating events screening unit is according to target area in the daily record of cdma wireless network parameter filtration gpsOne locating platform.
In one embodiment, positioning error determining unit obtains the gpsOne indoor positioning circular proable error under CEP68 condition in target area according to the distribution of PF error.
In above-described embodiment, by locating events, screen the processing of single location journal file that locating platform is generated and pick out AGPS locating events, by distance error acquiring unit, calculate the distance error of gpsOne indoor positioning, positioning error determining unit can draw the indoor positioning circular proable error of target area based on statistics, by a kind of simple data statistical approach, substitute heavy a large amount of on-the-spot indoor test and worked, can save a large amount of testing costs.
Fig. 4 illustrates according to the structural drawing of another embodiment of gpsOne indoor positioning circular proable error acquisition device of the present invention.
As shown in Figure 4, this embodiment comprises: locating events screening unit 31, distance error acquiring unit 42 and positioning error determining unit 43.Wherein distance error acquiring unit 42 comprises: first anchor point determination module 421, for obtaining the first anchor point of the AGPS locating events terminal that just position fixing process obtains based on architecture algorithm of gpsOne locating platform; Whole anchor point determination module 422, calculates the whole anchor point of the terminal obtaining for obtaining the whole position fixing process of AGPS locating events of gpsOne locating platform based on AGPS location algorithm; Error distance determination module 423, for calculating the earth spherical distance between whole anchor point and first anchor point.
In one embodiment, positioning error determining unit 43 comprises: PF error order module 431, for by ascending sequence of distance P F error of each AGPS locating events, obtains a locating events sequence; Sequence number acquisition module 432, for the number distance error number that records of locating events sequence is multiplied by 0.68 and round up, obtains sequence number N; Error location module 433, for the circular proable error that is PF distance error gpsOne indoor positioning in target area corresponding to the position the record of N using the sequence of locating events sequence sequence number.
The present invention, for existing indoor positioning error testing method, has following advantage:
1, the present invention, by the processing to journal file that locating platform generates, can evaluate the indoor positioning circular proable error of target area, has avoided on-the-spot heavy test job and data analysis work, has greatly improved work efficiency.
2, this method utilizes AGPS positioning result to put longitude and latitude as true value, has evaded and cannot obtain a difficult problem for true value coordinate under indoor environment, has improved the confidence level of error statistics;
3, this method can for example, be carried out macroanalysis to the indoor positioning error of region (provincial region) on a large scale, and classic method cannot be accomplished macroanalysis.
So far, described in detail according to gpsOne indoor positioning circular proable error acquisition methods processed of the present invention and device.For fear of covering design of the present invention, details more known in the field are not described.Those skilled in the art, according to description above, can understand how to implement technical scheme disclosed herein completely.
May realize in many ways method and system of the present invention.For example, can realize method and system of the present invention by any combination of software, hardware, firmware or software, hardware, firmware.The said sequence that is used for the step of described method is only in order to describe, and the step of method of the present invention is not limited to above specifically described order, unless otherwise specified.In addition, in certain embodiments, can be also the program being recorded in recording medium by the invention process, these programs comprise for realizing the machine readable instructions of the method according to this invention.Thereby the present invention also covers storage for carrying out the recording medium of the program of the method according to this invention.
Although specific embodiments more of the present invention are had been described in detail by example, it should be appreciated by those skilled in the art, above example is only in order to describe, rather than in order to limit the scope of the invention.It should be appreciated by those skilled in the art, can without departing from the scope and spirit of the present invention, above embodiment be modified.Scope of the present invention is limited by claims.
Claims (10)
1. a gpsOne indoor positioning circular proable error acquisition methods, is characterized in that, comprising:
According to the daily record of gpsOne locating platform, selecting whole align_type in target area is the locating events of auxiliary global satellite positioning system AGPS;
Obtain whole anchor point in each AGPS locating events and the first horizontal range between anchor point, as AGPS locating events in described target area just-whole positioning error, be called PF error;
According to the distribution situation of the PF error of each AGPS locating events in described target area, obtain the circular proable error of gpsOne indoor positioning in described target area.
2. method according to claim 1, is characterized in that, according to the distribution situation of the PF error of each AGPS locating events in described target area, the circular proable error that obtains the gpsOne indoor positioning in described target area comprises:
According to the distribution of described PF error, obtain the circular proable error of the gpsOne indoor positioning under CEP68 condition in described target area.
3. method according to claim 2, is characterized in that, the circular proable error that obtains the gpsOne indoor positioning under CEP68 condition in described target area according to the distribution of described PF error comprises:
All AGPS locating events in target area are sorted according to the numerical value of described PF error is ascending, obtain a locating events sequence;
The number that records of described locating events sequence is multiplied by 0.68 and round up, obtains sequence number N;
Choose the record that in described locating events sequence, recording mechanism is N, this records corresponding PF error numerical value and is under CEP68 condition the circular proable error of gpsOne indoor positioning in described target area.
4. method according to claim 1, is characterized in that, the horizontal range in each AGPS locating events of described acquisition between whole anchor point and first anchor point comprises:
Obtain the daily record of all locating events that in gpsOne locating platform target area, whole align_type is AGPS;
Daily record to locating events is resolved, and obtains the longitude and latitude of whole anchor point and first anchor point;
Calculate described whole anchor point and the described just earth spherical distance between anchor point, i.e. the PF error of this locating events.
5. method according to claim 1, is characterized in that, according to CDMA cdma wireless network parameter in the daily record of gpsOne locating platform, filters described target area.
6. a gpsOne indoor positioning circular proable error acquisition device, is characterized in that, comprising:
Locating events screening unit is the locating events of auxiliary global satellite positioning system AGPS for select whole align_type in target area from the daily record of gpsOne locating platform;
Distance error acquiring unit, for obtaining the whole anchor point of each AGPS locating events and the first horizontal range between anchor point, as AGPS locating events in described target area just-whole positioning error, be called PF error;
Positioning error determining unit, for obtaining the circular proable error of the gpsOne indoor positioning in described target area according to the distribution situation of the PF error of each AGPS locating events in described target area.
7. device according to claim 6, is characterized in that, described positioning error determining unit obtains the circular proable error of the gpsOne indoor positioning under CEP68 condition in described target area according to the distribution of described PF error.
8. device according to claim 7, is characterized in that, described positioning error determining unit comprises:
PF error order module, for by ascending sequence of described PF error of each AGPS locating events, obtains a locating events sequence;
Sequence number acquisition module, for the number that records of described locating events sequence is multiplied by 0.68 and round up, obtains sequence number N;
Error location module, for PF error corresponding to the position the record that is N using described locating events sequence sequence number circular proable error of gpsOne indoor positioning in described target area under CEP68 condition.
9. device according to claim 7, is characterized in that, described distance error acquiring unit comprises:
First anchor point determination module, for obtaining the AGPS locating events of the gpsOne locating platform described just anchor point that just position fixing process obtains based on architecture algorithm;
Whole anchor point determination module, calculates for obtaining the whole position fixing process of AGPS locating events of gpsOne locating platform the described whole anchor point obtaining based on AGPS location algorithm;
Error distance determination module, for calculating described whole anchor point and the described just earth spherical distance between anchor point.
10. device according to claim 6, is characterized in that, described locating events screening unit filters target area in the daily record of described gpsOne locating platform according to CDMA cdma wireless network parameter.
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| CN201310170722.7A CN104142507B (en) | 2013-05-10 | 2013-05-10 | GpsOne indoor positioning circular error probable obtaining method and device |
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| Publication number | Publication date |
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| CN104142507B (en) | 2017-02-08 |
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