CN103913756A - Locating method and electronic device - Google Patents
Locating method and electronic device Download PDFInfo
- Publication number
- CN103913756A CN103913756A CN201310001532.2A CN201310001532A CN103913756A CN 103913756 A CN103913756 A CN 103913756A CN 201310001532 A CN201310001532 A CN 201310001532A CN 103913756 A CN103913756 A CN 103913756A
- Authority
- CN
- China
- Prior art keywords
- navigation message
- prediction
- gps
- satellite
- time
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
- G01S19/38—Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system
- G01S19/39—Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system the satellite radio beacon positioning system transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
- G01S19/42—Determining position
-
- 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
- G01S19/24—Acquisition or tracking or demodulation of signals transmitted by the system
- G01S19/25—Acquisition or tracking or demodulation of signals transmitted by the system involving aiding data received from a cooperating element, e.g. assisted GPS
- G01S19/258—Acquisition or tracking or demodulation of signals transmitted by the system involving aiding data received from a cooperating element, e.g. assisted GPS relating to the satellite constellation, e.g. almanac, ephemeris data, lists of satellites in view
Landscapes
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Position Fixing By Use Of Radio Waves (AREA)
Abstract
The invention discloses a locating method and an electronic device. A locating request is sent to a base station, so that available satellite list information of the base station is received, and predicted navigational satellite broadcasting data are obtained; according to an available satellite list, a satellite to be detected currently is determined, and a GPS navigation message played by the satellite to be detected currently is detected; when the assigned length of the GPS navigation message played by the satellite to be detected currently is received, the first GPS time corresponding to the GPS navigation message with the assigned length is determined according to the predicted navigational satellite broadcasting data; the first GPS time is used, so that the pseudo-range corresponding to the satellite to be detected currently is calculated; when the pseudo-ranges of the available satellites of the assigned number are calculated, the position information of the electronic device is determined according to the calculated pseudo-ranges. Consumed time for locating the electronic device can be shortened through the locating method.
Description
Technical field
The present invention relates to equipment field of locating technology, relate in particular a kind of localization method and electronic equipment.
Background technology
GPS location technology is widely used in every field.At present, utilize GPS location technology can orient more accurately the positional information of electronic equipment.
Utilizing the process that GPS location technology positions electronic equipment is generally to send Location Request by electronic equipment to base station, and by base station, usable satellite list is sent to electronic equipment.This electronic equipment is according to this usable satellite list search satellite, and cushion navigation message from the satellite searching, detect the synchronizing signal in navigation message, and obtain gps time from synchronizing signal navigation message afterwards, to utilize this gps time to calculate pseudorange, and then the pseudorange calculating is sent to this base station, calculated the positional information of this electronic equipment by base station.But due to obtain navigation message from the satellite searching time, need to after synchronizing signal being detected, just can obtain GPS information, and synchronizing signal just occurs once for every 6 seconds, electronic equipment searches after satellite like this, need to wait for a period of time and just can get the gps time that this satellite is corresponding.And electronic equipment need to calculate the pseudorange information for multi-satellite, each so all needs waited until certain hour, thereby makes position fixing process consuming time longer.
Summary of the invention
In view of this, the invention provides a kind of localization method and electronic equipment, this localization method can reduce consuming time that electronic equipment is positioned.
For achieving the above object, the invention provides following technical scheme: a kind of localization method, be applied to electronic equipment, comprising:
To base station transmission Location Request, receive the usable satellite list information of base station, and obtain prediction Navsat and report data, wherein, can obtain the gps time of the satellite in described usable satellite list according to described prediction Navsat report data;
According to described usable satellite list, determine current satellite to be detected, and detect the gps navigation message that described current satellite to be detected is play;
In the time receiving the described gps navigation message of designated length of described current detection satellite broadcasting, report data according to described prediction Navsat, determine corresponding first gps time of gps navigation message of described designated length;
Utilize described the first gps time, calculate the pseudorange corresponding with described current satellite to be detected;
In the time completing its computation of pseudoranges of usable satellite of specified quantity, determine the positional information of described electronic equipment according to the multiple pseudoranges that calculate.
Preferably, described in obtain prediction Navsat report data, comprising:
From described base station, obtain described prediction Navsat and report data.
Preferably, described in obtain prediction Navsat report data, comprising:
From the server of specifying, obtain described prediction Navsat and report data.
Preferably, described prediction Navsat is reported data, comprising:
The gps navigation message of prediction, every of the gps navigation message of described prediction equal corresponding gps time;
Described according to described prediction Navsat report data, determine corresponding first gps time of gps navigation message of described designated length, comprising:
Determine that the gps navigation message of described designated length is in the primary importance of described prediction gps navigation message;
According to the corresponding gps time of coordination not in described prediction gps navigation message, determine the first gps time that described primary importance is corresponding.
Preferably, described prediction Navsat is reported data, comprising:
Almanac and almanac data;
After getting prediction Navsat report data, also comprise:
According to described almanac and almanac data structure forecast gps navigation message;
Accordingly, described according to described prediction Navsat report data, determine corresponding first gps time of gps navigation message of described designated length, comprising:
Determine that the gps navigation message of described designated length is in the primary importance of described prediction gps navigation message;
According to the corresponding gps time of diverse location in described prediction gps navigation message, determine the first gps time that described primary importance is corresponding.
Preferably, determine the positional information of described electronic equipment according to the multiple pseudoranges that calculate, comprising:
According to the gps navigation message that calculates the plurality of pseudorange and described prediction, on described electronic equipment, calculate the position of described electronic equipment.
On the other hand, the present invention also provides a kind of electronic equipment, comprising:
Location Request unit, for send Location Request to base station, receive the usable satellite list information of base station, and obtain prediction Navsat and report data, wherein, can obtain the gps time of the satellite in described usable satellite list according to described prediction Navsat report data;
Satellite acquisition unit, for according to described usable satellite list, determines current satellite to be detected, and detects the gps navigation message that described current satellite to be detected is play;
Time determining unit, in the time receiving the described gps navigation message of designated length of described current detection satellite broadcasting, reports data according to described prediction Navsat, determines corresponding first gps time of gps navigation message of described designated length;
Its computation of pseudoranges unit, for utilizing described the first gps time, calculates the pseudorange corresponding with described current satellite to be detected;
Position determination unit, in the time completing its computation of pseudoranges of usable satellite of specified quantity, determines the positional information of described electronic equipment according to the multiple pseudoranges that calculate.
Preferably, described positioning unit, comprising:
The first data capture unit, reports data for obtain described prediction Navsat from described base station.
Preferably, described positioning unit, comprising:
The second data capture unit, reports data for obtaining described prediction Navsat from the server of specifying.
Preferably, the prediction Navsat that described positioning unit gets is reported data, comprising:
The gps navigation message of prediction, every of the gps navigation message of described prediction equal corresponding gps time;
Described time determining unit, comprising:
Position determination unit, in the time receiving the described gps navigation message of designated length of described current detection satellite broadcasting, determines that the gps navigation message of described designated length is in the primary importance of described prediction gps navigation message;
Chronon determining unit, for according to the not corresponding gps time of coordination of described prediction gps navigation message, determines the first gps time that described primary importance is corresponding.
Preferably, the prediction Navsat that described positioning unit gets is reported data, comprising:
Almanac and almanac data;
Also comprise:
Text tectonic element, for according to described almanac and almanac data structure forecast gps navigation message;
Accordingly, described time determining unit, comprising:
Position determination unit, in the time receiving the described gps navigation message of designated length of described current detection satellite broadcasting, determines that the gps navigation message of described designated length is in the primary importance of described prediction gps navigation message;
Time is determined subelement, for according to the corresponding gps time of described prediction gps navigation message diverse location, determines the first gps time that described primary importance is corresponding.
Preferably, position determination unit in the time completing its computation of pseudoranges of usable satellite of specified quantity, according to the gps navigation message that calculates the plurality of pseudorange and described prediction, calculates the position of described electronic equipment on described electronic equipment.
Known via above-mentioned technical scheme, compared with prior art, the present invention openly provides a kind of localization method and electronic equipment, in the time that needs position electronic equipment, this electronic equipment sends Location Request to base station, receive the usable satellite list that this base station sends, and obtain prediction gps satellite and report data, and according to usable satellite list, in the time tracing into satellite, receive the gps navigation message of the designated length of this satellite broadcasting, corresponding the first gps time of gps navigation message of determining this designated length according to this prediction gps satellite played data, and then when comprising synchronizing signal in the navigation message that by the time this satellite is play, just can determine gps time, reduce the required duration of gps time of definite satellite, accelerate the speed of definite pseudorange, because the gps time that definite every satellite is corresponding is all corresponding less, thereby greatly shortened the pseudorange time of determining with multi-satellite, thereby it is consuming time to have reduced location, improve locating speed.
Accompanying drawing explanation
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 embodiments of the invention, for those of ordinary skills, do not paying under the prerequisite of creative work, other accompanying drawing can also be provided according to the accompanying drawing providing.
Fig. 1 shows the schematic flow sheet of an embodiment of a kind of localization method of the present invention;
Fig. 2 shows the schematic flow sheet of a kind of another embodiment of localization method of the present invention;
Fig. 3 shows the schematic flow sheet of a kind of another embodiment of localization method of the present invention;
Fig. 4 shows the structural representation of an embodiment of a kind of electronic equipment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Based on the embodiment in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
The embodiment of the invention discloses a kind of localization method, utilize this localization method can determine fast this electronic equipment positional information, improve the locating speed of electronic equipment.
Referring to Fig. 1, show the schematic flow sheet of an embodiment of a kind of localization method of the present invention, the method for the present embodiment is applied to an electronic equipment, and this electronic equipment can be mobile phone, pad, palm PC etc., and the method for the present embodiment can comprise:
Step 101: to base station transmission Location Request, receive the usable satellite list information of base station, and obtain prediction Navsat and report data, wherein, can obtain the gps time of the satellite in usable satellite list according to described prediction Navsat report data.
In the time that needs position this electronic equipment, can send Location Request to the base station of the current area at this electronic equipment place.This base station receives after the Location Request of this electronic equipment, obtains the satellite list that this electronic equipment can be used, and by this electronic equipment can with satellite list be sent to electronic equipment.
Unlike the prior art, this electronic equipment, except receiving the usable satellite list information of base station transmission, also needs to obtain prediction Navsat and reports data.Wherein, it is not the data that satellite current time is play that this prediction Navsat is reported data, but the law forecasting of playing according to satellite goes out the current time played data of fixed time section afterwards.Wherein, at least can obtain the gps time of the satellite in this usable satellite list according to these Navsat report data.
Step 102: according to this usable satellite list, determine current satellite to be detected, and detect the gps navigation message that described current satellite to be detected is play.
Obtaining after usable satellite list, this electronic equipment, according to this usable satellite list (being GPS supplementary), is successively searched for the usable satellite in this usable satellite list.The usable satellite of searching for when the current needs of electronic equipment is in the embodiment of the present application called current satellite to be detected, and the frequency range of searching for this current satellite to be detected, in the time that the frequency range of electronic equipment and this current satellite to be detected is identical, this electronic equipment is followed the tracks of the signal of this usable satellite searching, the gps navigation message of being play to detect this satellite to be detected.
Wherein, this electronic equipment is according to usable satellite list search usable satellite, identical with the existing process according to usable satellite list search usable satellite to search the process of the gps navigation message that this usable satellite play, can adopt the mode of searching for arbitrarily usable satellite in prior art, do not limited at this.
Step 103: in the time receiving the gps navigation message of designated length of this current detection satellite broadcasting, report data according to this prediction Navsat, determine corresponding first gps time of gps navigation message of this designated length.
Wherein, the gps navigation message of this designated length can be set as required, but the gps navigation message of this designated length should be less than the total length of the navigation message of playing in satellite 6s.In other words the time that, receives the navigation message of this designated length is less than 6 seconds.
Corresponding the first gps time of gps navigation message that can release this designated length according to prediction Navsat report data also can be called GPS launch time, i.e. GPS launch time in this current detection satellite clock, thereby the gps time when determining this current detection satellite getting and playing the gps navigation message of this designated length.Because the first gps time can be determined in the GPS text of reporting data and the current designated length receiving in real time according to this default Navsat, thereby in the navigation message that this current detection satellite is play, occur that without waiting for synchronizing signal can determine the satellite clock time, thereby make the time advance of subsequent calculations pseudorange.
Step 104: utilize this first gps time, calculate the pseudorange corresponding with this current satellite to be detected.
Because the error of satellite clock, receiver clock and radio signal are through the delay in ionosphere and troposphere, the actual distance of measuring and satellite have certain difference to the geometric distance of receiver, therefore the distance that, general weighing is measured between receiver and satellite is pseudorange.
When getting after this first gps time, calculate the i.e. difference of this electronic equipment local zone time and this first gps time of receiver local zone time, this difference and the light velocity are multiplied each other and can obtain pseudorange, formula is as follows:
Pseudorange=(receiver local zone time-gps time) * light velocity (formula one)
By as above formula is once calculating pseudorange information, the concrete satellite clock time of utilizing is that the first gps time carrys out the process of compute pseudo-ranges and the process of existing compute pseudo-ranges is similar, can adopt existing any-mode, does not repeat them here.
Step 105: in the time completing its computation of pseudoranges of usable satellite of specified quantity, determine the positional information of described electronic equipment according to the multiple pseudoranges that calculate.
After the pseudorange that need to calculate between this electronic equipment and multi-satellite, could utilize multiple pseudoranges finally to determine the positional information of this electronic equipment.Therefore, according to the usable satellite list getting, need to successively search for and follow the trail of multi-satellite, the clock that all needs to obtain this satellite for each satellite is gps time, and calculate the pseudorange of this electronic equipment and every satellite, and then the pseudorange of utilization and multi-satellite is determined the positional information of this electronic equipment.
Wherein, the usable satellite of specified quantity can be set as required, owing to determining that the positional information of electronic equipment at least needs and the pseudorange of four satellites, just can determine electronic equipment position, therefore, this specified quantity should be more than or equal to 4, if this specified quantity can be 4, can be also 8.
Determine that according to using with the pseudorange of multi-satellite the positional information of this electronic equipment is specially: this electronic equipment that calculate with pseudorange multi-satellite after, pseudorange information that calculate and multi-satellite is sent to base station, then go out the positional information of this electronic equipment by base station according to its computation of pseudoranges receiving, and the positional information of the electronic equipment calculating is sent to this electronic equipment.Wherein, the positional information that electronic equipment is determined according to multiple pseudoranges in base station can adopt existing any-mode, is not limited at this.
In the present embodiment, in the time that needs position electronic equipment, this electronic equipment sends Location Request to the base station of its community, place, receive the usable satellite list that this base station sends, and obtain prediction gps satellite and report data, and according to usable satellite list, while tracing into satellite, receive the gps navigation message of the designated length of this satellite broadcasting, corresponding the first gps time of gps navigation message of determining this designated length according to this prediction gps satellite played data, and then when comprising synchronizing signal in the navigation message that by the time this satellite is play, just can determine gps time, reduce the required duration of gps time of definite satellite, accelerate pseudorange speed, because the gps time that definite every satellite is corresponding is all corresponding less, thereby greatly shortened the pseudorange time of determining with multi-satellite, thereby it is consuming time to have reduced location, improve locating speed.
Wherein, the mode of obtaining these prediction Navsat report data has multiple, can be to obtain this prediction Navsat to report data from the base station of this community, electronic equipment place, as, when this base station sends to usable satellite list after this electronic equipment, electronic equipment can obtain the prediction Navsat of preserving in this base station and report data from base station; Or Dang Gai base station, this base station sends to usable satellite list after this electronic equipment, base station can initiatively be reported data by this prediction Navsat and send to electronic equipment.
Obtaining these prediction Navsat report data can be also the server from specifying, to download the Navsat played data of this prediction.
Referring to Fig. 2, show the schematic flow sheet of a kind of another embodiment of localization method of the present invention, the method for the present embodiment is applied to an electronic equipment, and this electronic equipment can be mobile phone, pad, palm PC etc., and the method for the present embodiment can comprise:
Step 201: send Location Request to base station, receive the usable satellite list information of base station, and obtain the gps navigation message of prediction, wherein, the gps time of every correspondence in the gps navigation message of described prediction.
Wherein, the gps navigation message that obtains prediction can adopt as above by obtain the gps navigation message of this prediction from base station or given server.
The Navsat of prediction report data can be specially the gps navigation message of prediction in the present embodiment.In the navigation message of prediction, every all corresponding gps time, if therefore determine the position of navigation message in the navigation message of this prediction, and can obtain the corresponding satellite clock moment of this position.
The base unit of navigation message of reporting due to satellite is a prime frame of long 1500bit, and transfer rate is 50bit/s, transmits a complete prime frame its 30 second.A prime frame comprises 5 subframes, and the 1st, 2,3 subframes repeat once every 30 seconds, and content renewal per hour once.4th, 5 subframes are to finish once for 12.5 minutes, and then repeat it, and its content is only just upgraded after satellite injects new navigation data.Therefore, within a certain period of time, the content of parameter in the navigation message that satellite is reported can't change, and what change is only GPS launch time in this navigation message, i.e. gps time.Meanwhile, because satellite is play in the process of navigation message, within every 6 seconds, there will be one time gps time, like this, if after the gps time of the navigation message that current time receives determines, the gps time of the navigation message of follow-up report also can be inferred out.That is to say, on the gps time basis of current report navigation message, the time delay of determining the follow-up text reporting, will add time delay on the gps time basis of current report navigation message, and the report time that is follow-up navigation message to be reported is gps time.
Based on above principle, can dope the gps navigation message that satellite is reported, and determine in the navigation message of prediction not gps time corresponding to coordination.
Step 202: according to this usable satellite list, determine current satellite to be detected, and detect the gps navigation message that described current satellite to be detected is play.
The operating process of the operating process of this step and step 102 embodiment illustrated in fig. 1 is similar, does not repeat them here
Step 203: in the time receiving the gps navigation message of designated length of this current detection satellite broadcasting, determine that the gps navigation message of described designated length is in the primary importance of described prediction gps navigation message.
Receive after the gps navigation message of this designated length, can compare receiving the gps navigation message of this designated length and gps navigation message that this dopes, thereby the gps navigation message of determining this designated length should be positioned at the particular location of this gps navigation message doping.By the gps navigation message of this designated length, the position in this prediction gps navigation message becomes primary importance in the present embodiment.
Step 204: according to the corresponding gps time of coordination not in this prediction gps navigation message, determine the first gps time that primary importance is corresponding.
Because the not coordination correspondence of the gps navigation message doping a fixing gps time, after primary importance at the navigation message of determining this designated length receiving in this prediction navigation message, can determine the gps time of the corresponding data bit of this primary importance, thus determine satellite report this designated length gps navigation message satellite report the moment.
Step 205: utilize this first gps time, calculate the pseudorange corresponding with this current satellite to be detected.
Step 206: in the time completing its computation of pseudoranges of usable satellite of specified quantity, determine the positional information of described electronic equipment according to the multiple pseudoranges that calculate.
The operating process of step 205 and step 206 and operating process embodiment illustrated in fig. 1 are similar, do not repeat them here.
In the present embodiment owing to getting the gps navigation message of prediction, when after the pseudorange of determining with the usable satellite of specific data, the positional information of calculating this electronic equipment also can complete in this electronic equipment, concrete, can be the positional information that goes out this electronic equipment according to the gps navigation message of prediction and its computation of pseudoranges.Identical with the process of the existing positional information of utilizing gps navigation message and its computation of pseudoranges electronic equipment according to the process of complete gps navigation message and the positional information of this electronic equipment of its computation of pseudoranges.But due in the present embodiment without pseudorange is sent to base station, and again the positional information calculating is returned to this electronic equipment calculated the positional information of this electronic equipment according to pseudorange by base station after, thereby reduce the interaction times of electronic equipment and base station, and then reduced network burden, also further improve locating speed.
It should be noted that, in actual applications in order to reduce network data transmission amount, and then reduce data transmission duration.The gps navigation message of this prediction getting can not be complete gps navigation message, in the gps navigation message of prediction, can comprise a prime frame of long 1500bit completely, it can be only the wherein a part of content that comprises prime frame, as long as can guarantee to determine the position of the navigation message of the designated length receiving in the gps navigation message that gets prediction, specifically can set as required.
Referring to Fig. 3, show the schematic flow sheet of a kind of another embodiment of localization method of the present invention, the method for the present embodiment is applied to an electronic equipment, and this electronic equipment can be mobile phone, pad, palm PC etc., and the method for the present embodiment can comprise:
Step 301: send Location Request to base station, receive the usable satellite list information of base station, and the Navsat that obtains prediction is reported data, wherein, the Navsat of prediction is reported data and is comprised ephemeris and almanac data, can obtain the gps time of the satellite in usable satellite list according to these prediction Navsat report data.
It can be ephemeris and the almanac data of satellite that the Navsat getting in the present embodiment is reported data.The mode of obtaining this ephemeris and almanac data can be to obtain from base station or given server.
Owing to being formed by the ephemeris and the every almanac repeating once for 12.5 minutes that within every 30 seconds, repeat one in the gps navigation message of satellite broadcasting, and ephemeris and almanac are all generally just can upgrade once for 1 hour or two hours, therefore the content of parameter in the navigation message that, in the fixed time, satellite is reported can be inferred and gps navigation message by ephemeris and almanac data.In this almanac and almanac data, at least a portion data, contain gps time.Like this, report data according to this prediction Navsat and can infer the gps time that different pieces of information position.
Step 302: according to the gps navigation message of described almanac and almanac data structure forecast.
With reference to the as above principle in the principle in the step 201 of Fig. 2 embodiment and this step 301, known, the navigation message of the ephemeris getting and almanac data structure forecast, each corresponding fixing gps time in the navigation message of this prediction.
Step 303: according to this usable satellite list, determine current satellite to be detected, and detect the gps navigation message that this current satellite to be detected is play.
It should be noted that, the implementation of this step 302 and step 303 can be first to perform step 302 to perform step 303 again, can be also that these two steps are carried out simultaneously.
Step 304: in the time receiving the gps navigation message of designated length of this current detection satellite broadcasting, determine that the gps navigation message of this designated length is in the primary importance of described prediction gps navigation message.
Step 305: according to the corresponding gps time of coordination not in this prediction gps navigation message, determine the first gps time that this primary importance is corresponding.
Step 306: utilize this first gps time, calculate the pseudorange corresponding with this current satellite to be detected.
Step 307: in the time completing its computation of pseudoranges of usable satellite of specified quantity, determine the positional information of this electronic equipment according to the multiple pseudoranges that calculate.
Wherein step 304 is similar to the implementation of corresponding steps embodiment illustrated in fig. 2 to the implementation of step 307, and associated description that specifically can embodiment shown in Figure 2, does not repeat them here.
In the present embodiment in the time completing its computation of pseudoranges of usable satellite of specified quantity, the positional information of determining this electronic equipment according to the multiple pseudoranges that calculate can be equally: according to the gps navigation message that calculates the plurality of pseudorange and described prediction, calculate the position of described electronic equipment on described electronic equipment.This process is identical with the associated description in Fig. 2 embodiment.
Corresponding a kind of localization method of the present invention, the present invention also provides a kind of electronic equipment, referring to Fig. 4, shows the structural representation of an embodiment of a kind of electronic equipment of the present invention, and the electronic equipment of the present embodiment can comprise:
Location Request unit 410, for send Location Request to base station, receive the usable satellite list information of base station, and obtain prediction Navsat and report data, wherein, can obtain the gps time of the satellite in described usable satellite list according to described prediction Navsat report data.
Satellite acquisition unit 420, for according to described usable satellite list, determines current satellite to be detected, and detects the gps navigation message that described current satellite to be detected is play.
Time determining unit 430, in the time receiving the described gps navigation message of designated length of described current detection satellite broadcasting, reports data according to described prediction Navsat, determines corresponding first gps time of gps navigation message of described designated length.
Its computation of pseudoranges unit 440, for utilizing described the first gps time, calculates the pseudorange corresponding with described current satellite to be detected.
Position determination unit 450, in the time completing its computation of pseudoranges of usable satellite of specified quantity, determines the positional information of described electronic equipment according to the multiple pseudoranges that calculate.
Wherein, this Location Request unit has multiple in the mode of obtaining prediction Navsat report data, and correspondence is a kind of mode wherein, and this Location Request can comprise:
The first data capture unit, reports data for obtain described prediction Navsat from described base station.
To obtaining the another kind of mode of predicting Navsat report data in Location Request unit, this Location Request unit can comprise:
The second data capture unit, reports data for obtaining described prediction Navsat from the server of specifying.
In the electronic equipment of the present embodiment, in the time that needs position electronic equipment, this electronic equipment sends Location Request to the base station of its community, place, receive the usable satellite list that this base station sends, and obtain prediction gps satellite and report data, and according to usable satellite list, while tracing into satellite, receive the gps navigation message of the designated length of this satellite broadcasting, corresponding the first gps time of gps navigation message of determining this designated length according to this prediction gps satellite played data, and then when comprising synchronizing signal in the navigation message that by the time this satellite is play, just can determine gps time, reduce the required duration of gps time of definite satellite, accelerate pseudorange speed, because the gps time that definite every satellite is corresponding is all corresponding less, thereby greatly shortened the pseudorange time of determining with multi-satellite, thereby it is consuming time to have reduced location, improve locating speed.
Wherein, the type of the prediction Navsat report data that get can have multiple, concrete, and the prediction Navsat that this Location Request unit gets is reported data and can be comprised:
The gps navigation message of prediction, every of the gps navigation message of described prediction equal corresponding gps time.
Accordingly, this time determining unit, can comprise:
Position determination unit, in the time receiving the described gps navigation message of designated length of described current detection satellite broadcasting, determines that the gps navigation message of described designated length is in the primary importance of described prediction gps navigation message;
Chronon determining unit, for according to the not corresponding gps time of coordination of described prediction gps navigation message, determines the first gps time that described primary importance is corresponding.
In another case, the prediction Navsat that this Location Request unit gets is reported data, can comprise:
Almanac and almanac data.
Accordingly, this electronic equipment also comprises:
Text tectonic element, for according to described almanac and almanac data structure forecast gps navigation message;
Correspondingly, this time determining unit, comprising:
Position determination unit, in the time receiving the described gps navigation message of designated length of described current detection satellite broadcasting, determines that the gps navigation message of described designated length is in the primary importance of described prediction gps navigation message;
Time is determined subelement, for according to the corresponding gps time of described prediction gps navigation message diverse location, determines the first gps time that described primary importance is corresponding.
In this electronic equipment, get on the basis of prediction navigation message, in the present embodiment, this position determination unit can realize the positional information that goes out himself in electronic equipment according to its computation of pseudoranges, concrete, this position determination unit, for in the time completing its computation of pseudoranges of usable satellite of specified quantity, according to the gps navigation message that calculates the plurality of pseudorange and described prediction, on described electronic equipment, calculate the position of described electronic equipment.
In this instructions, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is and the difference of other embodiment, between each embodiment identical similar part mutually referring to.For the disclosed electronic equipment of embodiment, because it corresponds to the method disclosed in Example, so description is fairly simple, relevant part illustrates referring to method part.
To the above-mentioned explanation of the disclosed embodiments, make professional and technical personnel in the field can realize or use the present invention.To be apparent for those skilled in the art to the multiple modification of these embodiment, General Principle as defined herein can, in the situation that not departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (12)
1. a localization method, is applied to electronic equipment, it is characterized in that, comprising:
To base station transmission Location Request, receive the usable satellite list information of base station, and obtain prediction Navsat and report data, wherein, can obtain the gps time of the satellite in described usable satellite list according to described prediction Navsat report data;
According to described usable satellite list, determine current satellite to be detected, and detect the gps navigation message that described current satellite to be detected is play;
In the time receiving the described gps navigation message of designated length of described current detection satellite broadcasting, report data according to described prediction Navsat, determine corresponding first gps time of gps navigation message of described designated length;
Utilize described the first gps time, calculate the pseudorange corresponding with described current satellite to be detected;
In the time completing its computation of pseudoranges of usable satellite of specified quantity, determine the positional information of described electronic equipment according to the multiple pseudoranges that calculate.
2. method according to claim 1, is characterized in that, described in obtain prediction Navsat report data, comprising:
From described base station, obtain described prediction Navsat and report data.
3. method according to claim 1, is characterized in that, described in obtain prediction Navsat report data, comprising:
From the server of specifying, obtain described prediction Navsat and report data.
4. method according to claim 1, is characterized in that, described prediction Navsat is reported data, comprising:
The gps navigation message of prediction, every of the gps navigation message of described prediction equal corresponding gps time;
Described according to described prediction Navsat report data, determine corresponding first gps time of gps navigation message of described designated length, comprising:
Determine that the gps navigation message of described designated length is in the primary importance of described prediction gps navigation message;
According to the corresponding gps time of coordination not in described prediction gps navigation message, determine the first gps time that described primary importance is corresponding.
5. method according to claim 1, is characterized in that, described prediction Navsat is reported data, comprising:
Almanac and almanac data;
After getting prediction Navsat report data, also comprise:
According to described almanac and almanac data structure forecast gps navigation message;
Accordingly, described according to described prediction Navsat report data, determine corresponding first gps time of gps navigation message of described designated length, comprising:
Determine that the gps navigation message of described designated length is in the primary importance of described prediction gps navigation message;
According to the corresponding gps time of diverse location in described prediction gps navigation message, determine the first gps time that described primary importance is corresponding.
6. according to the method described in claim 4 or 5, it is characterized in that, determine the positional information of described electronic equipment according to the multiple pseudoranges that calculate, comprising:
According to the gps navigation message that calculates the plurality of pseudorange and described prediction, on described electronic equipment, calculate the position of described electronic equipment.
7. an electronic equipment, is characterized in that, comprising:
Location Request unit, for send Location Request to base station, receive the usable satellite list information of base station, and obtain prediction Navsat and report data, wherein, can obtain the gps time of the satellite in described usable satellite list according to described prediction Navsat report data;
Satellite acquisition unit, for according to described usable satellite list, determines current satellite to be detected, and detects the gps navigation message that described current satellite to be detected is play;
Time determining unit, in the time receiving the described gps navigation message of designated length of described current detection satellite broadcasting, reports data according to described prediction Navsat, determines corresponding first gps time of gps navigation message of described designated length;
Its computation of pseudoranges unit, for utilizing described the first gps time, calculates the pseudorange corresponding with described current satellite to be detected;
Position determination unit, in the time completing its computation of pseudoranges of usable satellite of specified quantity, determines the positional information of described electronic equipment according to the multiple pseudoranges that calculate.
8. electronic equipment according to claim 7, is characterized in that, described positioning unit, comprising:
The first data capture unit, reports data for obtain described prediction Navsat from described base station.
9. electronic equipment according to claim 7, is characterized in that, described positioning unit, comprising:
The second data capture unit, reports data for obtaining described prediction Navsat from the server of specifying.
10. electronic equipment according to claim 7, is characterized in that, the prediction Navsat that described positioning unit gets is reported data, comprising:
The gps navigation message of prediction, every of the gps navigation message of described prediction equal corresponding gps time;
Described time determining unit, comprising:
Position determination unit, in the time receiving the described gps navigation message of designated length of described current detection satellite broadcasting, determines that the gps navigation message of described designated length is in the primary importance of described prediction gps navigation message;
Chronon determining unit, for according to the not corresponding gps time of coordination of described prediction gps navigation message, determines the first gps time that described primary importance is corresponding.
11. electronic equipments according to claim 7, is characterized in that, the prediction Navsat that described positioning unit gets is reported data, comprising:
Almanac and almanac data;
Also comprise:
Text tectonic element, for according to described almanac and almanac data structure forecast gps navigation message;
Accordingly, described time determining unit, comprising:
Position determination unit, in the time receiving the described gps navigation message of designated length of described current detection satellite broadcasting, determines that the gps navigation message of described designated length is in the primary importance of described prediction gps navigation message;
Time is determined subelement, for according to the corresponding gps time of described prediction gps navigation message diverse location, determines the first gps time that described primary importance is corresponding.
12. according to the electronic equipment described in claim 10 or 11, it is characterized in that, position determination unit, for in the time completing its computation of pseudoranges of usable satellite of specified quantity, according to the gps navigation message that calculates the plurality of pseudorange and described prediction, on described electronic equipment, calculate the position of described electronic equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310001532.2A CN103913756A (en) | 2013-01-04 | 2013-01-04 | Locating method and electronic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310001532.2A CN103913756A (en) | 2013-01-04 | 2013-01-04 | Locating method and electronic device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103913756A true CN103913756A (en) | 2014-07-09 |
Family
ID=51039581
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310001532.2A Pending CN103913756A (en) | 2013-01-04 | 2013-01-04 | Locating method and electronic device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103913756A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002012913A2 (en) * | 2000-08-08 | 2002-02-14 | Qualcomm Incorporated | Method, apparatus, and system for gps signal prediction |
| CN1439896A (en) * | 2002-02-19 | 2003-09-03 | 伊莱德公司 | Frame synchronization without leading codes |
| CN1849523A (en) * | 2003-07-23 | 2006-10-18 | 高通股份有限公司 | System for setting coarse GPS time in a mobile station within an asynchronous wireless network |
| CN101420259A (en) * | 2007-10-22 | 2009-04-29 | 那微微电子科技（上海）有限公司 | Frame synchronization method and device |
| CN101963669A (en) * | 2008-11-24 | 2011-02-02 | Sirf科技控股公司 | Method and apparatus for weak data frame sync in a positioning system |
-
2013
- 2013-01-04 CN CN201310001532.2A patent/CN103913756A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002012913A2 (en) * | 2000-08-08 | 2002-02-14 | Qualcomm Incorporated | Method, apparatus, and system for gps signal prediction |
| CN1439896A (en) * | 2002-02-19 | 2003-09-03 | 伊莱德公司 | Frame synchronization without leading codes |
| CN1849523A (en) * | 2003-07-23 | 2006-10-18 | 高通股份有限公司 | System for setting coarse GPS time in a mobile station within an asynchronous wireless network |
| CN101420259A (en) * | 2007-10-22 | 2009-04-29 | 那微微电子科技（上海）有限公司 | Frame synchronization method and device |
| CN101963669A (en) * | 2008-11-24 | 2011-02-02 | Sirf科技控股公司 | Method and apparatus for weak data frame sync in a positioning system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101755222B (en) | Global navigation satellite system | |
| EP2357494B1 (en) | Sensor-assisted location-aware mobile device | |
| KR101456081B1 (en) | Position location method, receiver, and computer readable medium for qualifying coarse position injection | |
| CN101038337B (en) | Method and device for storing economically auxiliary correction data applied in global navigation satellite system, and global navigation satellite system receiver | |
| US20170192102A1 (en) | eLORAN POSITIONING VIA CROWDSOURCING | |
| EP2444822B1 (en) | Method and system for computing universal hybrid navigation information for a GNSS enabled device | |
| US8193986B2 (en) | Method and system for enhancing a location server reference database through round-trip time (RTT) measurements | |
| CN101680939A (en) | Positioning using a reference station | |
| US20070120737A1 (en) | Method and system for providing location assistance information to a mobile station | |
| CN205581306U (en) | A data acquisition facility for writing down road roller rolls orbit | |
| CN110716222B (en) | Unmanned vehicle navigation method and system based on unmanned aerial vehicle | |
| CN104243580A (en) | Personnel comprehensive locating method and system applied to water conservancy construction site | |
| CN103885069A (en) | Long-distance pipeline GPS control measurement method based on CORS | |
| CN201266237Y (en) | High precision GPS difference system | |
| CN101315423A (en) | Method for computing code phase pseudo range between locating terminal and satellite in auxiliary global satellite positioning system | |
| WO2022039823A3 (en) | Operating modes of magnetic navigation devices | |
| CN100516900C (en) | Measuring method for time-delay correction value for long wave transmission | |
| US20170034657A1 (en) | Access point position determination by mobile devices crowd sourcing | |
| US20110199260A1 (en) | Method and system for determining a location of a cellular base station utilizing mobile gnss velocity and corresponding cellular doppler | |
| CN103675853A (en) | Navigation message synchronization method, receiver and device | |
| CN105005061A (en) | Positioning method and system based on satellite base stations | |
| CN103675839A (en) | Navigation message synchronization method, receiver and device | |
| CN101315421A (en) | Method for generating information needed by A-GPS locating terminal for capturing satellite signal | |
| CN102472821B (en) | Method, device and equipment for processing carrier phase in discontinuous satellite positioning system tracking | |
| CN110850447B (en) | Method for comprehensively evaluating positioning accuracy of train positioning unit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140709 |
|
| RJ01 | Rejection of invention patent application after publication |