CN105048091A - Multi-antenna satellite positioning receiving system - Google Patents
Multi-antenna satellite positioning receiving system Download PDFInfo
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- CN105048091A CN105048091A CN201510479615.1A CN201510479615A CN105048091A CN 105048091 A CN105048091 A CN 105048091A CN 201510479615 A CN201510479615 A CN 201510479615A CN 105048091 A CN105048091 A CN 105048091A
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Abstract
A multi-antenna satellite positioning receiving system comprises a plurality of receiving antennas, an antenna switching unit, a satellite positioning unit and a control unit, wherein the plurality of satellite receiving antennas are connected with the antenna switching unit, the antenna switching unit is connected with the satellite positioning unit, and the control unit is connected with the antenna switching unit and the satellite positioning unit respectively. The multi-antenna satellite positioning receiving system can be applied to a satellite positioning receiver, and a more effective antenna mode can be provided when the working efficiency of a single satellite antenna cannot cover a plurality of systems. By the multi-antenna satellite positioning receiving system, a device can have high signal quality in multiple directions, the application range of a product is effectively expanded, and the requirement on an installation environment is reduced.
Description
Technical field
The present invention relates to field of satellite location, particularly relate to a kind of multiple antennas satellite fix receiving system.
Background technology
After GPS of America GPS (Global Position System), many big countries are that strategic development needs all to set up respective global positioning system.The global position system of current extensive use has GPS, GLONASS, the Big Dipper etc.These navigation systems, except the privileged users such as the special frequency channel Zhi Xian military use, all have open to the operating frequency of civilian location, and have been widely used in the fields such as auto navigation, antitheft, tracking.Position location satellite distance ground is comparatively far away, and the signal arriving satellite positioning receiver is often very faint, usually within the scope of satellite direct-view, also can not exceed-120dBm.When satellite antenna be in block or partial occlusion environment in time, the quantity of the satellite-signal received and intensity also can sharply weaken, and in this case, antenna system reasonable in design seems particularly important.
Commercial satellite positioning equipment conventional at present generally adopts single receive antenna.And civilian satellite receiving equipment often turns to master with small-sized, adopt single receive antenna may there is following defect in much equipment:
1, individual antenna cannot cover multiple global position system very well and organize frequency range altogether, such as GPSL1 frequency is 1575.42MHz, in the China's Big Dipper 2 generation, the operating frequency of civilian part B1 frequency was 1559.052MHz-1591.788MHz, and the civilian L1 band frequency of Russian GLONASS is 1602 ~ 1615MHz.If by an antenna cover three systems, need the beamwidth of antenna to be greater than 60MHz, many reception antennas of good performance such as patch antenna is difficult to accomplish bandwidth like this.
2, for portable small-sized miniature receiving equipment, antenna size is limited, and general antenna all has stronger directivity, for satellite receiver, best state necessarily the maximum direction of antenna gain towards sky.And for specific product, the actual installation position of user is varied, in installation constrained environment, adopt single with accepting antenna compared with highly directive, locating effect will be greatly affected.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind of multiple antennas satellite fix receiving system is provided, by adopting multiple satellite earth antenna, according to rational Antenna Selection Algorithem, improving mobile satellite location equipment performance.
The object of the invention is to be achieved through the following technical solutions:
A kind of multiple antennas satellite fix receiving system, comprising:
Multiple reception antenna;
Antenna switching unit, for switching and being communicated with of each reception antenna;
Satellite positioning unit, for realizing satellite fix according to the satellite-signal that receives, and exports each satellite-signal strength information, positional information, the temporal information that current search arrives;
Control unit, for reading output information and the control antenna switch unit of satellite positioning unit, by judging each antenna receiving signal quality, selects suitable antenna as current use antenna.
Described multiple satellite earth antenna is connected with antenna switching unit, and described antenna switching unit is connected with satellite positioning unit, and described control unit is connected with antenna switching unit, satellite positioning unit respectively.
Above-mentioned multiple antennas satellite fix receiving system, preferably, is provided with first order low noise amplifier in described reception antenna.
Above-mentioned multiple antennas satellite fix receiving system, preferably, described reception antenna is patch antenna.
Above-mentioned multiple antennas satellite fix receiving system, preferably, described reception antenna is helical antenna.
Above-mentioned multiple antennas satellite fix receiving system, preferably, described antenna switching unit is the duplexer that a hilted broadsword is thrown more.
Above-mentioned multiple antennas satellite fix receiving system, preferably, described satellite positioning unit is the chip being provided with integrated circuit.
Above-mentioned multiple antennas satellite fix receiving system, preferably, described control unit is the single-chip microcomputer with height calculation function.
Present invention also offers a kind of multiple antennas satellite fix method of reseptance, comprise the following steps:
(1) open global position system, control unit, by control antenna switch unit, makes multiple reception antenna be communicated with satellite positioning unit successively;
(2) satellite positioning unit receives satellite-signal and realizes satellite fix, and exports each satellite-signal strength information, positional information, temporal information that current search arrives;
(3) within last 5 seconds of a period of time that multiple reception antenna is communicated with satellite positioning unit, the carrier-to-noise ratio mean value of some the satellites that statistical signal carrier-to-noise ratio is the highest, is designated as S1, S2, S3 respectively ... SN;
(4) control unit compares S1, S2, S3 ... the size of SN, choosing reception antenna corresponding to maximum is optimal antenna, makes it to keep connected state with satellite positioning unit;
(5) when satellite positioning unit cannot obtain for a long time enough strong satellite letter time, repeat the step of above-mentioned (1) ~ (4).
Multiple antennas satellite fix method of reseptance described above, wherein, described step (2) also comprises the output information that control unit reads satellite positioning unit.
Above-mentioned multiple antennas satellite fix method of reseptance, wherein, in described step (3), the quantity of the satellite that statistical signal carrier-to-noise ratio is the highest is 2 or 3 or 4 or 5.
Owing to have employed technique scheme, the present invention can be applicable to satellite positioning receiver, can provide more effective antenna mode when single satellite antenna operating frequency cannot cover multiple satellite system; Individual antenna satellite receiving equipment, when user installation, cannot ensure that antenna optimum orientation faces sky, and the present invention makes equipment have good signal quality in a plurality of directions, effectively improves the scope of application of product, weakens the requirement to installation environment.
Accompanying drawing explanation
Fig. 1 is the structure principle chart of multiple antennas satellite fix receiving system of the present invention;
Fig. 2 is the antenna switching flow figure of triantennary gps satellite navigation system of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.
Embodiment 1:
Refer to Fig. 1, a kind of multiple antennas satellite fix receiving system of the present invention, comprising:
Multiple reception antenna;
Antenna switching unit, for switching and being communicated with of each reception antenna;
Satellite positioning unit, for realizing satellite fix according to the satellite-signal that receives, and exports each satellite-signal strength information, positional information, the temporal information that current search arrives;
Control unit, for reading output information and the control antenna switch unit of satellite positioning unit, by judging each antenna receiving signal quality, selects suitable antenna as current use antenna.
Multiple satellite earth antenna is connected with antenna switching unit, and antenna switching unit is connected with satellite positioning unit, and control unit is connected with antenna switching unit, satellite positioning unit respectively.
Reception antenna adopts patch antenna, helical antenna etc., in order to improve signal carrier-to-noise ratio, can arrange first order low noise amplifier in reception antenna.Each reception antenna works alone and is connected with antenna switching unit, and reception antenna quantity can need selection more than 2 or 2 according to actual product.
The duplexer that antenna switching unit can adopt a hilted broadsword to throw more, antenna switching unit is connected with multiple satellite earth antenna, satellite positioning unit respectively.The signal phase received due to each antenna there are differences, and be directly connected in mutually by each road antenna receiving signal if simple and signal strength signal intensity many times can be made to die down, such as when two-way aerial signal difference 180 degree, attenuating is the most obvious.So satellite positioning unit synchronization is only connected with individual antenna.
Satellite positioning unit is the chip being provided with integrated circuit, and can realize decoding and the positioning function of signal in a chips, chip only needs outside to provide clock, power supply etc.
Control unit can adopt the single-chip microcomputer with height calculation function, and control unit can control antenna switch unit, and one of them making in multiple satellite earth antenna is connected with satellite positioning unit.
The present invention adopts following methods to realize the satellite fix of multiple antennas, comprises the following steps:
(1) open global position system, control unit, by control antenna switch unit, makes multiple reception antenna be communicated with satellite positioning unit successively;
(2) satellite positioning unit receives satellite-signal and realizes satellite fix, and exports each satellite-signal strength information, positional information, temporal information that current search arrives, and control unit reads the output information of satellite positioning unit;
(3) within last 5 seconds of a period of time that multiple reception antenna is communicated with satellite positioning unit, the carrier-to-noise ratio mean value of 3 satellites that statistical signal carrier-to-noise ratio is the highest, is designated as S1, S2, S3 respectively ... SN;
(4) control unit compares S1, S2, S3 ... the size of SN, choosing reception antenna corresponding to maximum is optimal antenna, makes it to keep connected state with satellite positioning unit;
(5) when satellite positioning unit cannot obtain for a long time enough strong satellite letter time, repeat the step of above-mentioned (1) ~ (4).
Embodiment 2:
For triantennary gps satellite navigation system, concrete introduction realizes the changing method of multiple antennas, refers to Fig. 2.
Comprise the following steps:
(1) open global position system first, control unit by control antenna switch unit, makes antenna 1, antenna 2 is communicated with satellite positioning unit with antenna 3, successively assuming that individual antenna Lifetime is 120 seconds;
(2) within last 5 seconds of 120 seconds that antenna 1, antenna 2 and antenna 3 are communicated with satellite positioning unit, the carrier-to-noise ratio mean value of 3 satellites that statistical signal carrier-to-noise ratio is the highest, remembers S1, S2, S3 respectively.(Lifetime that individual antenna starts is the reason of 120s is to obtain stable signal strength information)
(3) control unit compares the size of S1, S2 and S3, and choosing antenna corresponding to maximum is optimal antenna, makes it to keep connected state with satellite positioning unit;
(4) when satellite positioning unit cannot obtain enough strong satellite-signal for a long time, possible receiver applied environment changes, and repeats the step of above-mentioned (1) ~ (3).
Above-described embodiment is only for illustration of technological thought of the present invention and feature, its object is to enable those skilled in the art understand content of the present invention and implement according to this, only can not limit patent model of the present invention employing with the present embodiment to enclose, namely all equal changes of doing according to disclosed spirit or modification, still drop in the scope of the claims of the present invention.
Claims (10)
1. a multiple antennas satellite fix receiving system, is characterized in that, comprising:
Multiple reception antenna;
Antenna switching unit, for switching and being communicated with of each reception antenna;
Satellite positioning unit, for realizing satellite fix according to the satellite-signal that receives, and exports each satellite-signal strength information, positional information, the temporal information that current search arrives;
Control unit, for reading output information and the control antenna switch unit of satellite positioning unit, by judging each antenna receiving signal quality, selects suitable antenna as current use antenna;
Described multiple satellite earth antenna is connected with antenna switching unit, and described antenna switching unit is connected with satellite positioning unit, and described control unit is connected with antenna switching unit, satellite positioning unit respectively.
2. multiple antennas satellite fix receiving system according to claim 1, is characterized in that, be provided with first order low noise amplifier in described reception antenna.
3. multiple antennas satellite fix receiving system according to claim 1, is characterized in that, described reception antenna is patch antenna.
4. multiple antennas satellite fix receiving system according to claim 1, is characterized in that, described reception antenna is helical antenna.
5. multiple antennas satellite fix receiving system according to claim 1, is characterized in that, described antenna switching unit is the duplexer that a hilted broadsword is thrown more.
6. multiple antennas satellite fix receiving system according to claim 1, is characterized in that, described satellite positioning unit is the chip being provided with integrated circuit.
7. multiple antennas satellite fix receiving system according to claim 1, is characterized in that, described control unit is the single-chip microcomputer with height calculation function.
8. a multiple antennas satellite fix method of reseptance, is characterized in that, comprises the following steps:
(1) open global position system, control unit, by control antenna switch unit, makes multiple reception antenna be communicated with satellite positioning unit successively;
(2) satellite positioning unit receives satellite-signal and realizes satellite fix, and exports each satellite-signal strength information, positional information, temporal information that current search arrives;
(3) within last 5 seconds of a period of time that multiple reception antenna is communicated with satellite positioning unit, the carrier-to-noise ratio mean value of some the satellites that statistical signal carrier-to-noise ratio is the highest, is designated as S1, S2, S3 respectively ... SN;
(4) control unit compares S1, S2, S3 ... the size of SN, choosing reception antenna corresponding to maximum is optimal antenna, makes it to keep connected state with satellite positioning unit;
(5) when satellite positioning unit cannot obtain for a long time enough strong satellite letter time, repeat the step of above-mentioned (1) ~ (4).
9. multiple antennas satellite fix method of reseptance according to claim 8, is characterized in that, described step (2) also comprises the output information that control unit reads satellite positioning unit.
10. multiple antennas satellite fix method of reseptance according to claim 8, is characterized in that, in described step (3), the quantity of the satellite that statistical signal carrier-to-noise ratio is the highest is 2 or 3 or 4 or 5.
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| CN201510479615.1A CN105048091A (en) | 2015-08-07 | 2015-08-07 | Multi-antenna satellite positioning receiving system |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106058470A (en) * | 2016-06-07 | 2016-10-26 | 北京小米移动软件有限公司 | GPS (Global Positioning System) antenna device and control method |
| CN106680846A (en) * | 2015-12-22 | 2017-05-17 | 中国电子科技集团公司第二十研究所 | Anti-interference satellite receiving equipment antenna switching apparatus under shielding condition |
| CN107728137A (en) * | 2017-10-10 | 2018-02-23 | 芜湖华创光电科技有限公司 | A kind of Passive Radar System of multi-antenna array switching |
| CN108924760A (en) * | 2018-05-29 | 2018-11-30 | 大唐终端技术有限公司 | Hybrid locating method and system under more station-keeping modes |
| CN109490912A (en) * | 2018-11-28 | 2019-03-19 | Tcl移动通信科技（宁波）有限公司 | GPS antenna switching method, storage medium and GPS device |
| CN110352563A (en) * | 2017-03-02 | 2019-10-18 | 美光科技公司 | For handling the method and apparatus of multiple signals of communication with single integrated circuit chip |
| US11055657B2 (en) | 2017-03-02 | 2021-07-06 | Micron Technology, Inc. | Methods and apparatuses for determining real-time location information of RFID devices |
| CN113740893A (en) * | 2020-05-30 | 2021-12-03 | 华为技术有限公司 | Positioning method and electronic equipment |
| CN113905116A (en) * | 2021-09-30 | 2022-01-07 | 青岛海信移动通信技术股份有限公司 | Antenna switching method based on double positioning chips and multi-antenna terminal equipment |
| CN114628919A (en) * | 2022-03-11 | 2022-06-14 | 上海旷通科技有限公司 | 5G active antenna assembly |
| WO2022213267A1 (en) * | 2021-04-06 | 2022-10-13 | 深圳市大疆创新科技有限公司 | Positioning processing method and related device |
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| CN204331036U (en) * | 2014-12-23 | 2015-05-13 | 南京波格微电子有限公司 | Beidou antenna device for intelligently switching |
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| CN204793201U (en) * | 2015-08-07 | 2015-11-18 | 上海移为通信技术股份有限公司 | Many antennas satellite positioning receiving system |
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| CN204331036U (en) * | 2014-12-23 | 2015-05-13 | 南京波格微电子有限公司 | Beidou antenna device for intelligently switching |
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Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106680846A (en) * | 2015-12-22 | 2017-05-17 | 中国电子科技集团公司第二十研究所 | Anti-interference satellite receiving equipment antenna switching apparatus under shielding condition |
| CN106058470A (en) * | 2016-06-07 | 2016-10-26 | 北京小米移动软件有限公司 | GPS (Global Positioning System) antenna device and control method |
| US11677685B2 (en) | 2017-03-02 | 2023-06-13 | Micron Technology, Inc. | Methods and apparatuses for processing multiple communications signals with a single integrated circuit chip |
| CN110352563A (en) * | 2017-03-02 | 2019-10-18 | 美光科技公司 | For handling the method and apparatus of multiple signals of communication with single integrated circuit chip |
| US10958593B2 (en) | 2017-03-02 | 2021-03-23 | Micron Technology, Inc. | Methods and apparatuses for processing multiple communications signals with a single integrated circuit chip |
| US11055657B2 (en) | 2017-03-02 | 2021-07-06 | Micron Technology, Inc. | Methods and apparatuses for determining real-time location information of RFID devices |
| US11783287B2 (en) | 2017-03-02 | 2023-10-10 | Micron Technology, Inc. | Methods and apparatuses for determining real-time location information of RFID devices |
| CN107728137A (en) * | 2017-10-10 | 2018-02-23 | 芜湖华创光电科技有限公司 | A kind of Passive Radar System of multi-antenna array switching |
| CN108924760A (en) * | 2018-05-29 | 2018-11-30 | 大唐终端技术有限公司 | Hybrid locating method and system under more station-keeping modes |
| CN108924760B (en) * | 2018-05-29 | 2021-05-18 | 大唐终端技术有限公司 | Hybrid positioning method and system under multiple positioning modes |
| CN109490912A (en) * | 2018-11-28 | 2019-03-19 | Tcl移动通信科技（宁波）有限公司 | GPS antenna switching method, storage medium and GPS device |
| WO2021244335A1 (en) * | 2020-05-30 | 2021-12-09 | 华为技术有限公司 | Positioning method and electronic device |
| CN113740893A (en) * | 2020-05-30 | 2021-12-03 | 华为技术有限公司 | Positioning method and electronic equipment |
| WO2022213267A1 (en) * | 2021-04-06 | 2022-10-13 | 深圳市大疆创新科技有限公司 | Positioning processing method and related device |
| CN113905116A (en) * | 2021-09-30 | 2022-01-07 | 青岛海信移动通信技术股份有限公司 | Antenna switching method based on double positioning chips and multi-antenna terminal equipment |
| CN113905116B (en) * | 2021-09-30 | 2023-09-19 | 青岛海信移动通信技术有限公司 | Antenna switching method based on double positioning chips and multi-antenna terminal equipment |
| CN114628919A (en) * | 2022-03-11 | 2022-06-14 | 上海旷通科技有限公司 | 5G active antenna assembly |
| CN114628919B (en) * | 2022-03-11 | 2023-08-29 | 上海旷通科技有限公司 | 5G active antenna assembly |
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Application publication date: 20151111 |