CN101098182A - Geographical position service system - Google Patents
Geographical position service system Download PDFInfo
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- CN101098182A CN101098182A CNA2006100362489A CN200610036248A CN101098182A CN 101098182 A CN101098182 A CN 101098182A CN A2006100362489 A CNA2006100362489 A CN A2006100362489A CN 200610036248 A CN200610036248 A CN 200610036248A CN 101098182 A CN101098182 A CN 101098182A
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Abstract
The invention discloses a geography position service system, which receives GPS satellite signal sent from the satellite of Global Position System-GPS, to provide position service. The system at least comprises a plurality of signal receivers for receiving and processing GPS satellite signals to generate GPS auxiliary data, a data collector for collecting the GPS auxiliary data generated by the signal receivers, a broadcast unit for converting the collected GPS auxiliary data into broadcast signal to be broadcasted, and a positioning unit for receiving broadcast signal and GPS satellite signal to generate geography position service. The invention can quickly and accurately provide geography position for object with wide range.
Description
Technical field
The invention relates to a kind of geographical position service system, particularly relevant for a kind of global positioning system (Global Position System that passes through; GPS) provide location-based service to give to be positioned the geographical position service system of thing.
Background technology
In the traffic science and technology epoch now day by day easily, the mankind's activity scope enlarges gradually, therefore there is the people to propose the notion of what is called " global village ", yet in the transportation network of this vast activity space and complexity, how to orient the whereabouts place accurately, promptly need be by a kind of global positioning system (Global PositionSystem), be received from the signal that artificial satellite is transmitted with basis, grasp coordinate position accurately rapidly, and carry out Activities or other controls processing according to this coordinate position, in enlarged area, can grasp the active path of these people or thing whenever and wherever possible for the thing that is positioned provides geo-location service, effectively reduce because of failing to understand the position, the puzzlement that is caused, and other is at manpower, waste on time and the resource.
The development of global positioning system is existing two more than ten years so far, and technology is quite ripe at present.There are 27 position location satellites in the whole world approximately around the earth, on average utilizes 3～4 position location satellites to measure the location point on ground with triangle position-finding method.General accuracy error approximately can be in 10～25 meters.
Part automobile installing GPS satellite navigation system is arranged at present, utilize GPS receiver to receive at least four as seen, the information that is not stopped satellite and transmitted, can calculate its position and provide geo-location service for it, as long as the user possesses the signal receiving/transmission device of global positioning system, and install onboard, just the satellite location data that receives can be seen through wireless communication platform, be sent to the communication base platform, arrive specific satellite service net through private line access again, when and where no matter the user go up this service network as long as link in, can see through electronic chart, grasp the vehicle driving situation in real time and (comprise the position, speed, time, direction of traffic, loading and unloading goods situation etc..).But in the city, be subjected to stopping of building,,, be difficult to utilize traditional gps receiver to receive the work that gps satellite signal positions because the gps satellite signal that receives is comparatively faint perhaps in the city.For example, when effectively locating, assembling is that gps satellite signal that gps receiver on the vehicle receives 3～4 satellite transmissions at least can determine the geographical position of vehicle, and when vehicle is exercised in the urban district, owing to be subjected to stopping of high-lager building on every side, the gps satellite signal that the gps receiver that is equipped with on the vehicle can't effectively receive gps satellite and transmitted, thus make that positioning accuracy is poor, position error increases.
In addition, because gps receiver receives gps satellite signal and spends considerable time, for example the almanac data of gps receiver reception satellite transmission need last 42 seconds, receive almanac (almanac) data and need last 12.5 minutes, and when satellite-signal is subjected to stopping of high-lager building, for receiving the also signal cost considerable time of gps satellite signal that is enough to provide locating information, thereby cause the positioning service that provides that traditional GPS navigation system can't be real-time, make increase substantially positioning time simultaneously, and the GPS long duration is enough to provide the gps satellite signal of locating information also quite to expend electric power in order to reception.
Moreover, because global positioning system signal system sends with shortwave, so not influenced by weather, but be subjected to the refraction of building external form, tunnel, overcover etc. to influence reception, thereby cause the coverage density of present common geographical position service system often can not be satisfactory.
Therefore, how providing the geographical position service system that a kind of positioning time is short, setting accuracy is high and service quality is good promptly is the problem that present industry need solve.
Summary of the invention
In view of the above problems, main purpose of the present invention is to provide a kind of geographical position service system, and it is able to provide geo-location service for the thing that is positioned apace.
Another purpose of the present invention is to provide a kind of geographical position service system, and it is promoted the geo-location service precision, and geo-location service more accurately is provided.
Still a further object of the present invention is to provide a kind of geographical position service system, the density of its geo-location service that is increased.
For reaching above-mentioned purpose, the present invention promptly provides a kind of geographical position service system.Geographical position service system of the present invention is in order to receiving world locational system (Global Position System; GPS) gps satellite signal of satellite transmission gives the thing that is positioned so that location-based service to be provided, this system comprises: the majority signal receiving element, it is in order to receiving this gps satellite signal, and the gps satellite signal that is received is handled to produce GPS auxiliary data (aiding data); Data collection module, it is in order to collecting the GPS auxiliary data that those signal receiving units produce, and the GPS auxiliary data that it is collected and being transmitted; Radio unit, it is in order to handle the GPS auxiliary information that this data collection module transmitted to produce the broadcast singal that is fit to broadcasting and to be sent; And positioning unit, it obtaining the GPS auxiliary data, and receives gps satellite signal in order to receiving broadcast signal, and the GPS auxiliary data that it obtained and the gps satellite signal of reception are handled, thereby provides geo-location service to give the thing that is positioned.
Compared to prior art, geographical position service system of the present invention can receive and handle gps satellite signal to produce the GPS auxiliary data by the majority signal receiving element, see through a data collection module then and collect the GPS auxiliary data that a little signal receiving units produce, and the GPS auxiliary data that it receives is sent to radio unit handles producing the broadcast singal that is fit to broadcasting and to be sent, and provide geo-location service to give the thing that is positioned according to the gps satellite signal of this broadcast singal and reception thereof for positioning unit.Therefore the positioning unit in the geographical position service system of the present invention is except that directly being received the gps satellite signal, can receive those signal receiving units that transmit through radio unit and receive the gps satellite signal of handling, thereby can provide quick, accurate and highdensity geo-location service the thing that is positioned.
Description of drawings
Fig. 1 is the application architecture schematic diagram of geographical position service system of the present invention;
Fig. 2 is the basic framework schematic diagram of signal receiving unit among Fig. 1;
Fig. 3 is the basic framework schematic diagram of radio unit among Fig. 1;
Fig. 4 is the basic framework schematic diagram of positioning unit among Fig. 1.
Embodiment
See also Fig. 1, wherein show geographical position service system 1 application architecture schematic diagram of the present invention.As shown in the figure, the present invention's geographical position service system 1 be in order to receiving world locational system (global positionsystem, the gps satellite signal that most satellites 2 GPS) send, thereby provide location-based service to give the thing that is positioned.This geographical position service system 1 comprises majority signal receiving element 10, data collection module 11, radio unit 12 and positioning unit 13.
Above-mentioned signal receiving unit 10 is in order to receive the gps satellite signal of gps satellite 2, and handle its received gps satellite signal and handle to produce GPS auxiliary information (aiding data) and provide and give data collection module 11, as the reference that the object location service that is positioned is provided, wherein, the GPS auxiliary data comprises DGPS (Differential GPS; DGPS) data, IAT (CoordinatedUniversal Time; UTC) and, GPS almanac data etc. as auxiliary data for follow-up broadcasting.
For further showing principle of the present invention and effect, below will the basic framework of signal receiving unit 10, radio unit 12 and the positioning unit 13 of geographical position service system 1 of the present invention be elaborated.
See also Fig. 2, it is for showing the basic framework figure of signal receiving unit 10 of the present invention.As shown in the figure, signal receiving unit 10 is a GPS parametric receiver (GPS reference rece iver), and it comprises a radio-frequency front-end receiver (Radio Freqency front-end) 100 and baseband processor (basebandprocessor) 101.Above-mentioned radio-frequency front-end receiver 100 is in order to the gps satellite signal that receives satellite 2 (for example being radio frequency analog signal), and gps satellite signal done corresponding front-end processing, for example gps satellite signal being carried out filtering, amplification, D/A conversion etc. handles to produce digital signal, and the gps satellite signal after will handling is sent to baseband processor 101, for baseband processor 101 handle after radio-frequency front-end receiver 100 handled gps satellite signal handle to produce the GPS auxiliary data.
See also Fig. 3, it is for describing the basic framework figure of the radio unit 12 in the geographical position service system 1 of the present invention in detail.This radio unit 12 is received terrestrial digital broadcasting (as DAB, DMB etc.) or satellite digital broadcasting (for example XM satellite radio, worldspace etc.), be simplicity of illustration and explanation, present embodiment is the example explanation with a concrete framework of received terrestrial digital broadcasting only, but what must propose explanation is not to be to limit the scope of the invention with this embodiment.As shown in the figure, this radio unit 12 comprises package multitask (packetmultiplex) module 120, most channel (channel) coding module 121, most audio coding module 122, channel multitask module 123, transmits multitask module 124, modulation (modulation) module 125 and sending module 126.
Aforementioned this package multitask module 120 be in order to the GPS auxiliary information that the data service (data service) that radio unit 12 is desired to broadcast and data collection module 11 transmits carry out multitasking with dateout business (data service) and one of them person of GPS auxiliary data to channel coding module 121.This package multitask module 120 can be a multiplexer, and according to the actual design needs, this multiplexer also can be replaced by other intimate electronic device or electronic circuit.
This audio coding module 122 is encoded in order to the audio service (audioservice) that radio unit 12 is desired to broadcast and is exported channel coding module 121 to and encode to produce the second channel code signal to produce audio coding signal.This audio coding module is an encoder, looks the actual design needs, and encoder also can be replaced by other intimate electronic device or electronic circuit.
Transmitting multitask module 124 is to be combined into data flow in order to the Signals ﹠ Systems information that this channel multitask module 123 is transmitted, wherein, system information comprises the channel multitask information of broadcast system information and channel multitask module 123, correctly obtains required channel information with convenient follow-up receiving terminal;
Modulating module 125 be in order to first or the second channel code signal handle to produce modulating signal and export sending module 126 to.This modulating module 125 is a modulator for example, looks the actual design needs, and this modulator also can be replaced by other intimate electronic device or electronic circuit.
See also Fig. 4, it is the basic framework schematic diagram of the positioning unit 13 of detailed description geographical position service system 1 of the present invention.This positioning unit 13 comprises as shown in the figure: broadcast singal receiver module 13a and receiving processing module 13b.Broadcast singal receiver module 13a is the broadcast singal that includes the GPS service data in order to reception, and therefrom obtains required gps data and export processing module 13b to; Receiving processing module 13b is in order to receive the gps satellite signal that GPS auxiliary data and satellite 2 send, and received GPS auxiliary data and this gps satellite signal handled to produce location service information give the thing that is positioned, wherein, broadcast singal receiver module 13a comprises tuner module 130, channel demodulation module 131, channel decoding module 132, package demodulation module 133 and control module 134, and this broadcast singal receiver module 13a can be a broadcast signal receiver that is disposed at the thing that is positioned; Receiving processing module 13b comprises radio-frequency front-end receiver module 135 and baseband processing module 136, and receiving processing module 13b can be a gps receiver that is disposed at the thing that is positioned.
Above-mentioned tuner module 130 is in order to receive the broadcast singal that includes gps data (radiofrequency signal) that this radio unit 12 sends, and the broadcast singal that includes gps data that it received handled, processing such as for example filtering, amplification, A/D conversion are to be transformed into digital signal and to be sent to channel demodulation module 131, wherein, this tuner module 130 tuning circuit of can be a tuner (tunner) or having identity function.
This channel demodulation module 131 is to handle to produce the channel demodulation signal in order to the broadcast singal that includes gps data that tuner module 130 is received.
This channel decoding module 132 is to handle to produce the channel decoding signal in order to the channel demodulation signal that this channel demodulation module 131 is produced.
This package demodulation module 133 is to handle therefrom to obtain the GPS auxiliary data in order to the channel decoding signal that this channel decoding module 132 is produced to handle for this baseband processing module 136.
This radio-frequency front-end receiver module 135 is the gps satellite signals (radiofrequency signal) in order to 2 transmissions of reception satellite, and this gps satellite signal is carried out front-end processings such as for example filtering, amplification, A/D conversion handle for baseband processing module 136 to produce digital signal.
This baseband processing module 136 is to handle to produce location service information (information such as the longitude of the thing that for example is positioned, latitude and height) and provide and give the thing that is positioned in order to this GPS auxiliary data and this RF front-end module 135 produced digital signals, wherein, baseband processing module 136 is a GPS baseband processor (GPSbaseband processor).The technology that this GPS baseband processor is carried out signal processing is that industry is known, so no longer give unnecessary details for literary composition at this.
Therefore, geographical position service system 1 of the present invention mainly is to see through majority signal receiving element 10 to receive and handle gps satellite signal to produce the GPS auxiliary data, see through a data collection module 11 then and collect GPS auxiliary data that those signal receiving units 10 produce and the GPS auxiliary data that it receives is sent to radio unit 12 and handle to produce the broadcast singal that is fit to broadcasting and send, provide geo-location service information to give the thing that is positioned according to the gps satellite signal of this broadcast singal and reception thereof for positioning unit 13.Because the present invention can will include the DGPS data through received terrestrial digital broadcasting or satellite digital broadcasting, IAT UTC, the GPS auxiliary data of information such as GPS almanac data is broadcasted for this positioning unit 13 and is received, this positioning unit 13 also can directly receive the gps satellite signal that gps satellite sends simultaneously, and can to its receive include the GPS auxiliary data and this gps satellite signal is handled to provide location service information to give the thing that is positioned, thereby can provide location-based service fast by the GPS auxiliary data of broadcast transmission and in conjunction with gps satellite signal, so reach to reduce positioning time and have the effect of saving electric energy simultaneously concurrently, in the time of can avoiding the receiver of GPS positioner in the known technology directly to receive gps satellite signal location service information is provided, because the receiver receiving satellite signal need can receive the satellite-signal that is enough to provide location-based service through the long period, thereby cause increase positioning time, disappearances such as electric energy loss increase.
Geographical position service system 1 of the present invention again can see through radio unit 12 broadcast transmission GPS auxiliary datas and gps satellite signal provides location-based service, because of this GPS auxiliary data includes the DGPS data, thereby the location-based service of pinpoint accuracy can be provided, can avoid receiving gps satellite signal according to gps receiver merely in the known technology and carry out disappearances such as the caused position error of location-based service is big, positioning accuracy is low.
Moreover, geographical position service system 1 of the present invention, can receive gps satellite signal and produce the GPS auxiliary data by majority signal receiving element 10 for radio unit 12 broadcast transmissions, thereby can handle to produce complete location service information according to the gps satellite signal of this GPS auxiliary data and reception thereof for positioning unit 13 and give the thing that is positioned, thereby can improve location density, and raised position service quality, and can avoid to receive complete gps satellite signal because of building covers often owing to the things that are positioned such as for example vehicle travel in the known technology, and it is low and effective locating information can't be provided to cause locating density, causes the location-based service quality to reduce.
Claims (12)
1. geographical position service system, it is in order to receiving world locational system (Global PositionSystem; GPS) gps satellite signal that satellite transmitted is to provide location-based service to give to be positioned thing, and this system comprises:
The majority signal receiving element in order to receiving this gps satellite signal, and is handled to produce the GPS auxiliary data this gps satellite signal;
Data collection module, it collects the GPS auxiliary data that signal receiving unit produced, and collected GPS auxiliary data is transmitted;
Radio unit is handled the broadcast singal that is fit to broadcasting to produce in order to the GPS auxiliary data that this data collection module is transmitted, and the broadcast singal that is produced is sent; And
Positioning unit, in order to receive the broadcast singal that this radio unit produces, and this broadcast singal handled to obtain this GPS auxiliary information, and receive this gps satellite signal, and the GPS auxiliary data and this gps satellite signal that are obtained handled, provide and give the thing that is positioned thereby produce geo-location service information.
2. geographical position service system according to claim 1 is characterized in that: signal receiving unit is a GPS parametric receiver (GPS reference receiver).
3. geographical position service system according to claim 2 is characterized in that: the GPS parametric receiver comprises that one receives radio-frequency front-end (RF front-end) receiver of gps satellite signal and in order to gps satellite signal is handled to produce base band (Baseband) processor of GPS auxiliary data.
4. geographical position service system according to claim 2 is characterized in that: GPS parametric receiver position is for fixing.
5. geographical position service system according to claim 1 is characterized in that: the GPS auxiliary data comprises almanac data, IAT (UTC) data and differential GPS data.
6. geographical position service system according to claim 1 is characterized in that: it is to be undertaken by ground and one of them person of broadcasting-satellite system that radio unit sends the broadcast singal that is produced.
7. geographical position service system according to claim 1, it is characterized in that: radio unit comprises at least:
Package multitask module is carried out multitasking so that this data traffic information and one of them person of this GPS auxiliary data are sent out in order to data service and this GPS auxiliary data that will be received;
The audio coding module is encoded to produce audio coding signal in order to the audio service (audio service) that will be received;
Channel coding module is handled to produce first channel encoded signal in order to the signal that package multitask module is transmitted, and the audio coding signal that reaches the generation of encode audio module is handled to produce the second channel code signal;
Channel multitask module is in order to handle first and second channel encoded signal so that first channel encoded signal and one of them person of second channel code signal are sent out;
Transmit the multitask module, be combined into data flow in order to Signals ﹠ Systems information with this channel multitask module transmission;
Modulating module is in order to carry out modulation to produce modulating signal and output to the data flow of this transmission multitask module generation; And
Sending module in order to the modulating signal that this modulating module produced being transformed into the broadcast singal that be fit to transmit, and sends this broadcast singal.
8. geographical position service system according to claim 7 is characterized in that: transmit the module integrated system information system for data flow of multitask and comprise broadcast system information and channel multitask information.
9. according to claim 1 or 7 described geographical position service systems, it is characterized in that: positioning unit comprises:
The broadcast singal receiver module sends the broadcast singal that includes the GPS auxiliary data in order to receive this radio unit, and this broadcast singal is handled to obtain this GPS auxiliary data; And
Receiving processing module in order to receiving the gps satellite signal of this GPS auxiliary data and this satellite transmission, and is handled to produce location service information received GPS auxiliary data and this gps satellite signal and to be given this thing that is positioned.
10. geographical position service system according to claim 9 is characterized in that: the broadcast singal receiver module comprises:
Tuner module sends the broadcast singal that includes the GPS auxiliary data in order to receive this radio unit;
The channel demodulation module is handled to produce channel demodulation signal and output in order to this tuner module is received the broadcast singal that includes the GPS auxiliary data;
The channel decoding module is in order to handle the channel demodulation signal of this channel demodulation module output to produce channel decoding signal and output;
The package demodulation module is handled to obtain this GPS auxiliary data in order to the channel decoding signal that this channel decoding module is produced; And
Control module is in order to produce control signal to control the action of this tuner module, this channel demodulation module, this channel decoding module and this package demodulation module.
11. geographical position service system according to claim 9 is characterized in that: receiving processing module comprises that a gps satellite signal after handling in order to GPS auxiliary data that this broadcast reception module is obtained and this radio-frequency front-end receiver module in order to the gps satellite signal that receives this satellite transmission and to the radio-frequency front-end receiver module and that this gps satellite signal carries out corresponding front-end processing handles to produce the baseband processing module that location service information gives this thing that is positioned.
12. geographical position service system according to claim 9 is characterized in that: receiving processing module is a gps receiver.
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| CNA2006100362489A CN101098182A (en) | 2006-06-30 | 2006-06-30 | Geographical position service system |
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| CNA2006100362489A CN101098182A (en) | 2006-06-30 | 2006-06-30 | Geographical position service system |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103765927A (en) * | 2011-08-30 | 2014-04-30 | 高通股份有限公司 | Generic broadcast of location assistance data |
| CN103792560A (en) * | 2012-10-30 | 2014-05-14 | 中兴通讯股份有限公司 | Satellite positioning method, device and system |
| CN108961615A (en) * | 2018-06-05 | 2018-12-07 | 华北理工大学 | A kind of book information classification of information management system |
| WO2019157729A1 (en) * | 2018-02-14 | 2019-08-22 | 华为技术有限公司 | Method and device for sending auxiliary data |
| US11191056B2 (en) | 2018-08-08 | 2021-11-30 | Qualcomm Incorporated | Systems and methods for validity time and change notification of broadcast location assistance data |
| US11356804B2 (en) | 2018-02-25 | 2022-06-07 | Qualcomm Incorporated | Systems and methods for efficiently supporting broadcast of location assistance data in a wireless network |
-
2006
- 2006-06-30 CN CNA2006100362489A patent/CN101098182A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103765927A (en) * | 2011-08-30 | 2014-04-30 | 高通股份有限公司 | Generic broadcast of location assistance data |
| US9699758B2 (en) | 2011-08-30 | 2017-07-04 | Qualcomm Incorporated | Verifying generic broadcast of location assistance data |
| CN103765927B (en) * | 2011-08-30 | 2017-07-28 | 高通股份有限公司 | The general broadcast of location assistance data |
| CN103792560A (en) * | 2012-10-30 | 2014-05-14 | 中兴通讯股份有限公司 | Satellite positioning method, device and system |
| WO2019157729A1 (en) * | 2018-02-14 | 2019-08-22 | 华为技术有限公司 | Method and device for sending auxiliary data |
| US11356804B2 (en) | 2018-02-25 | 2022-06-07 | Qualcomm Incorporated | Systems and methods for efficiently supporting broadcast of location assistance data in a wireless network |
| CN108961615A (en) * | 2018-06-05 | 2018-12-07 | 华北理工大学 | A kind of book information classification of information management system |
| US11191056B2 (en) | 2018-08-08 | 2021-11-30 | Qualcomm Incorporated | Systems and methods for validity time and change notification of broadcast location assistance data |
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