CN102721969A - Device and system for global four-dimensional information transmission - Google Patents
Device and system for global four-dimensional information transmission Download PDFInfo
- Publication number
- CN102721969A CN102721969A CN2012102246384A CN201210224638A CN102721969A CN 102721969 A CN102721969 A CN 102721969A CN 2012102246384 A CN2012102246384 A CN 2012102246384A CN 201210224638 A CN201210224638 A CN 201210224638A CN 102721969 A CN102721969 A CN 102721969A
- Authority
- CN
- China
- Prior art keywords
- gravitational field
- global
- satellite
- field coefficient
- gps satellite
- 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.)
- Granted
Links
Images
Landscapes
- Position Fixing By Use Of Radio Waves (AREA)
Abstract
The invention discloses a device and a system for global four-dimensional information transmission and belongs to the technical field of satellite positioning. The device comprises a gravitational field measuring module for measuring the local gravitational field coefficients, a control module for processing the gravitational field coefficients measured by the gravitational field measuring module, and a communication module for transmitting the gravitational field coefficients processed by the control module to the global positioning system satellite under control of the control module. The system comprises the device for the global four-dimensional information transmission and the global positioning system satellite. The device and the system for global four-dimensional information transmission measure the local gravitational field coefficients through the gravitational field measuring module and transmit the gravitational field coefficients through the global positioning system satellite, so that the global positioning satellite can provide three-dimensional positioning information including longitude, latitude and gravitational field coefficients, and the three-dimensional positioning information can provide reference for scientific research working of relative fields.
Description
Technical field
The present invention relates to the satellite positioning tech field, particularly a kind of global four-dimensional information transfer device and system.
Background technology
Because GPS (Global Positioning System; GPS) round-the-clock, the high precision that had of technology and the characteristics of measuring automatically; It has incorporated each application of the development of the national economy, national defense construction and social development as advanced person's measurement means and new yield-power.
At present, the service that provides of gps satellite system mainly comprises locus service and Time Service.Wherein, the locus service is meant that the locating information (comprising longitude, latitude and height) of utilizing the gps satellite systems communicate positions, navigates or measures.
In realizing process of the present invention, the inventor finds that there is following problem at least in prior art:
Because the height that existing gps satellite system provides is normally above to the sea level, so existing locating information is in some special application scenarios and inapplicable, like seafari, subsurface investigation etc.
Summary of the invention
For the locating information that solves the gps satellite system that exists in the prior art and provide is not suitable for the problem of some special application scenarios, the embodiment of the invention provides a kind of global four-dimensional information transfer device and system.Said technical scheme is following:
On the one hand, a kind of global four-dimensional information transfer device is provided, said device comprises:
The gravitational field measurement module is used to measure local gravitational field coefficient;
Control module is used to handle the gravitational field coefficient that said gravitational field measurement module records;
Communication module is used under the control of said control module, and the gravitational field coefficient after said control module is handled sends to GPS satellite.
Preferably, said gravitational field measurement module comprises: atom gravity gradiometer, the atom cooling imprison light source that is used to said atom gravity gradiometer provide outer frequency stabilization passive cavity, be used to said passive cavity the external reference source of outer frequency stabilization reference be provided, be used to produce modulation signal and synchronous reference signal modulation signal generator, be used to adopt said synchronous reference signal that the laser signal of said passive cavity output is carried out the detection unit mutually of phase sensitive detection and be used for adjusting the piezoelectric crystal driver that said atom cools off the output frequency of imprisoning light source according to the frequency discrimination signal of said phase detection unit output.
Preferably, said device also comprises: satellite signal receiver is used for the reference time information of receiving world locational system satellite transmission.
Preferably, said external reference source also be used to said satellite signal receiver provide lock in time signal;
Correspondingly, said control module also is used for according to said reference time information and the local temporal frequency comparison data of said calculated signals lock in time;
Said communication module also is used to send the temporal frequency comparison data that said control module calculates, and receives the gravitational field coefficient in the strange land that said GPS satellite sends and the temporal frequency in strange land is compared data.
Preferably, said external reference source adopts atomic clock.
Preferably, said communication module comprises:
First communication unit is used for directly and GPS satellite communicates, so that said gravitational field coefficient is sent to said GPS satellite;
Second communication unit is used for communicating with ground base station, through said ground base station said gravitational field coefficient is sent to said GPS satellite.
Preferably, said device also comprises: the output display module is used to show that the gravitational field coefficient in the strange land that said communication module receives and the temporal frequency in strange land compare data.
On the other hand, a kind of global four-dimensional information transmission system is provided, said system comprises: aforementioned global four-dimensional information transfer device; And GPS satellite, be used to send reference time information, and between said global four-dimensional information transfer device, transmit said gravitational field coefficient and temporal frequency comparison data.
The beneficial effect that the technical scheme that the embodiment of the invention provides is brought is: record local gravitational field coefficient through the gravitational field measurement module; And this gravitational field coefficient transmitted through GPS satellite; Thereby make GPS satellite to provide to comprise the three-dimensional localization information of longitude, latitude, gravitational field coefficient (highly); Since this three-dimensional localization information with the gravitational field coefficient as elevation information; So it is not only applicable to above position, sea level, is applicable to the position of b.s.l. yet, and then can reference be provided for the association area research work.
Description of drawings
In order to be illustrated more clearly in the technical scheme in the embodiment of the invention; The accompanying drawing of required use is done to introduce simply in will describing embodiment below; Obviously, the accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the global four-dimensional information transfer device structural representation that the embodiment of the invention 1 provides;
Fig. 2 is the structural representation of the gravitational field measurement module that provides of the embodiment of the invention 1;
Fig. 3 is the global four-dimensional information transfer device structural representation that the embodiment of the invention 2 provides;
Fig. 4 is the structural representation of the global four-dimensional information transmission system that provides of the embodiment of the invention 3.
Embodiment
For making the object of the invention, technical scheme and advantage clearer, will combine accompanying drawing that embodiment of the present invention is done to describe in detail further below.
Embodiment 1
The embodiment of the invention provides a kind of global four-dimensional information transfer device, and referring to Fig. 1, this device comprises: gravitational field measurement module 11, control module 12 and communication module 13.Wherein, gravitational field measurement module 11 is used to measure local gravitational field coefficient; Control module 12 is used to handle the gravitational field coefficient that gravitational field measurement module 11 records; Communication module 13 is used under the control of control module 12, and the gravitational field coefficient after control module 12 is handled sends to GPS satellite.Control module 12 is electrically connected with gravitational field measurement module 11 and communication module 13 respectively.
Preferably; As shown in Figure 2, gravitational field measurement module 11 comprises: atom gravity gradiometer 111, the atom cooling imprison light source 111a that is used to atom gravity gradiometer 111 provide outer frequency stabilization passive cavity 112, be used to passive cavity 112 external reference source 113 of outer frequency stabilization reference be provided, be used to produce the modulation signal generator 114 of modulation signal and synchronous reference signal, the piezoelectric crystal driver 116 that is used to adopt this synchronous reference signal that the laser signal of passive cavity 112 outputs is carried out the detection unit mutually 115 of phase sensitive detection and is used for cooling off according to the frequency discrimination signal adjustment atom of phase detection unit 115 outputs the output frequency of imprisoning light source 111a.Wherein, Passive cavity 112 is imprisoned light source 111a, external reference source 113 and detection unit 115 electrical connections mutually with the atom cooling respectively; Modulation signal generator 114 is electrically connected with detection unit mutually 115 and piezoelectric crystal driver 116 respectively, and the output terminal of phase detection unit 115 is electrically connected with piezoelectric crystal driver 116.
Wherein, atom gravity gradiometer 111 partly is made up of cooling imprison, atom fountain, initial state preparation, intervening atom, final states detection etc., and its detailed structure and principle are known for those skilled in the art, omit at this and describe in detail.Wherein, atom cooling imprison light source 111a preferably adopts the laser instrument of Littrow structure, and the structure of this laser instrument also is the known technology of this area, omits at this and describes in detail.
Wherein, passive cavity 112 can be a Fabry-Paro etalon that the Q value is very high, because its inside does not have heater elements such as discharge tube, does not have laser medium, and volume is also very little, so than being easier to keep the stable of temperature, air pressure and machinery.Simultaneously; Because its Q value is very high; So its tuning curve passband is very narrow; Apply a little modulation through 114 pairs of piezoelectric crystal drivers 115 of modulation signal generator, and then can modulate the laser signal of atom cooling imprison light source output, the power that sees through passive cavity 112 back laser is with respective change.The synchronous reference signal that phase detection unit 115 produces according to modulation signal generator 114, the laser signal that the band that sees through passive cavity is modulated carries out phase sensitive detection, and with in frequency discrimination signal feedback to the piezoelectric crystal driver 116 that obtains.Piezoelectric crystal driver 116 can be the piezoelectric ceramic piece that the light-source chamber catoptron is installed; Because its electrostrictive properties; When it is applied in different voltages with different; Can make the chamber long hair give birth to change, thereby cause the variation of light source output frequency, realize that finally atom cooling imprison light source output signal frequency is stabilized on the centre frequency of passive cavity.
After adopting passive cavity 112 frequency stabilizations, can obtain short-term stability preferably, on this basis,, adopt external reference source 113 to stablize the resonance frequency of passive cavity 112 in the present embodiment in order to obtain better long-term stability.
Preferably, external reference source 113 can adopt atomic clock, includes but not limited to rubidium atomic clock, cesium-beam atomic clock etc.
Need to prove that GPS satellite can be the satellite of gps system satellite, big-dipper satellite positioning system satellite or other global position systems.
The embodiment of the invention records local gravitational field coefficient through the gravitational field measurement module; And this gravitational field coefficient transmitted through GPS satellite; Thereby make GPS satellite to provide to comprise the three-dimensional localization information of longitude, latitude, gravitational field coefficient (highly); Since this three-dimensional localization information with the gravitational field coefficient as elevation information; So it is not only applicable to above position, sea level, is applicable to the position of b.s.l. yet, and then can reference be provided for the association area research work.
Embodiment 2
The embodiment of the invention provides a kind of global four-dimensional information transfer device; As shown in Figure 3; The structure of the device among this device and the embodiment 1 is basic identical; Difference is that the device of present embodiment also comprises: satellite signal receiver 34 is used for the reference time information of receiving world locational system satellite transmission.
Preferably, in the present embodiment, this external reference source 113 also be used to satellite signal receiver provide lock in time signal;
Correspondingly, control module 12 also is used for according to reference time information and the local temporal frequency comparison data of calculated signals lock in time; Communication module also is used to send the temporal frequency comparison data that control module 12 calculates, and the temporal frequency in the gravitational field coefficient in the strange land of receiving world locational system satellite transmission and strange land comparison data.
Particularly, this temporal frequency comparison data are meant the poor of reference time information that local reference time standard and GPS satellite provide.Be example with A, B two places below, explain that present embodiment carries out the principle that temporal frequency is transmitted.If temporal frequency transmission both sides' signal receiver is reference source descend synchronously externally; The local reference time standard that obtains is respectively T1, T2; Residual error is respectively L1, L2; Local external reference source time and frequency standard is F1, F2, and then have L1=L2=0 if receiver is synchronized to external reference source fully this moment.
Relational expression is arranged:
△T1=T1-T0 （1）
△T2=T2-T0 （2）
Wherein, T0 is the measured data of the gps satellite system of synchronization.
After using external reference source instead:
△T1=（F1-L1）-T0 （3）
△T2=（F2-L2）-T0 （4）
Further calculating has:
F1-F2=（△T1-△T2）+（L1-L2） （5）
If receiver is synchronized to external reference source fully, promptly L1=L2=0 then has
F1-F2=△T1-△T2 （6）
Formula (6) is the comparison result of AB two places temporal frequency comparison data.
Since present embodiment adopted atomic clock be satellite signal receiver provide accurate lock in time signal, so can realize transmitting based on the time of high precision atomic clock.Simultaneously; Because the latitude and longitude information transmission in the four-dimensional locating information all will be stablized and accuracy based on the atomic clock on the GPS satellite; And present embodiment is through uplink time comparison data; Set up the network of personal connections of the atomic clock on local atomic clock and the GPS satellite, like this, can with the time in the GPS, longitude with latitude organic connections be in the same place.In addition; Because this external reference source is promptly as the outer frequency stabilization reference of passive cavity (gravitational field measurement module); Again for satellite signal receiver provide accurate lock in time signal; So time and gravitational field coefficient are also combined, thereby make time and space to combine more closely, and then set up the network of personal connections of the global four-dimension (time, longitude, latitude, gravitational field coefficient) infosystem.
Preferably, communication module 13 comprises first communication unit and second communication unit.Wherein, first communication unit is used for directly and GPS satellite communicates, so that said gravitational field coefficient is sent to said GPS satellite; Second communication unit is used for communicating with ground base station, through said ground base station said gravitational field coefficient is sent to said GPS satellite.Because communication module 13 can adopt two kinds of communication modes, so can guarantee the timely transmission of gravitational field coefficient and time ratio to data.
Preferably, this device can also comprise: output display module 35, be used to show the gravitational field coefficient in the strange land that communication module 13 receives and the temporal frequency comparison data in strange land, and this is exported display module 35 and is electrically connected with control module 12.Output display module 35 can also show the comparison result of local zone time frequency ratio to data and strange land temporal frequency comparison data.
The embodiment of the invention records local gravitational field coefficient through the gravitational field measurement module; And this gravitational field coefficient transmitted through GPS satellite; Thereby make GPS satellite to provide to comprise the three-dimensional localization information of longitude, latitude, gravitational field coefficient (highly); Since this three-dimensional localization information with the gravitational field coefficient as elevation information; So it is not only applicable to above position, sea level, is applicable to the position of b.s.l. yet, and then can reference be provided for the association area research work.
Embodiment 3
The embodiment of the invention provides a kind of global four-dimensional information transmission system, and referring to Fig. 4, this system comprises the global four-dimensional information transfer device 42 that provides among GPS satellite 41 and the embodiment 1 or 2.
Wherein, GPS satellite 41 can be the satellite of gps system satellite, big-dipper satellite positioning system satellite or other global position systems.Whole world four-dimensional information transfer device 42 can be provided with in various places as required, and the quantity among the figure is merely example, not as limitation of the present invention.
The embodiment of the invention records local gravitational field coefficient through the gravitational field measurement module; And this gravitational field coefficient transmitted through GPS satellite; Thereby make GPS satellite to provide to comprise the three-dimensional localization information of longitude, latitude, gravitational field coefficient (highly); Since this three-dimensional localization information with the gravitational field coefficient as elevation information; So it is not only applicable to above position, sea level, is applicable to the position of b.s.l. yet, and then can reference be provided for the association area research work.
The all or part of step that one of ordinary skill in the art will appreciate that realization the foregoing description can be accomplished through hardware; Also can instruct relevant hardware to accomplish through program; Described program can be stored in a kind of computer-readable recording medium; The above-mentioned storage medium of mentioning can be a ROM (read-only memory), disk or CD etc.
The above is merely preferred embodiment of the present invention, and is in order to restriction the present invention, not all within spirit of the present invention and principle, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. global four-dimensional information transfer device is characterized in that said device comprises:
The gravitational field measurement module is used to measure local gravitational field coefficient;
Control module is used to handle the gravitational field coefficient that said gravitational field measurement module records;
Communication module is used under the control of said control module, and the gravitational field coefficient after said control module is handled sends to GPS satellite.
2. device according to claim 1; It is characterized in that said gravitational field measurement module comprises: atom gravity gradiometer, the atom cooling imprison light source that is used to said atom gravity gradiometer provide outer frequency stabilization passive cavity, be used to said passive cavity the external reference source of outer frequency stabilization reference be provided, be used to produce modulation signal and synchronous reference signal modulation signal generator, be used to adopt said synchronous reference signal that the laser signal of said passive cavity output is carried out the detection unit mutually of phase sensitive detection and be used for adjusting the piezoelectric crystal driver that said atom cools off the output frequency of imprisoning light source according to the frequency discrimination signal of said phase detection unit output.
3. device according to claim 2 is characterized in that, said device also comprises:
Satellite signal receiver is used for the reference time information of receiving world locational system satellite transmission.
4. device according to claim 3 is characterized in that, said external reference source also be used to said satellite signal receiver provide lock in time signal;
Correspondingly, said control module also is used for according to said reference time information and the local temporal frequency comparison data of said calculated signals lock in time;
Said communication module also is used to send the temporal frequency comparison data that said control module calculates, and receives the gravitational field coefficient in the strange land that said GPS satellite sends and the temporal frequency in strange land is compared data.
5. device according to claim 4 is characterized in that, said external reference source adopts atomic clock.
6. device according to claim 1 is characterized in that, said communication module comprises:
First communication unit is used for directly and GPS satellite communicates, so that said gravitational field coefficient is sent to said GPS satellite;
Second communication unit is used for communicating with ground base station, through said ground base station said gravitational field coefficient is sent to said GPS satellite.
7. device according to claim 1 is characterized in that, said device also comprises:
The output display module is used to show that the gravitational field coefficient in the strange land that said communication module receives and the temporal frequency in strange land compare data.
8. global four-dimensional information transmission system is characterized in that said system comprises:
Each described global four-dimensional information transfer device of claim 1-7;
GPS satellite is used to send reference time information, and between said global four-dimensional information transfer device, transmits said gravitational field coefficient and temporal frequency comparison data.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210224638 CN102721969B (en) | 2012-07-02 | 2012-07-02 | Device and system for global four-dimensional information transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210224638 CN102721969B (en) | 2012-07-02 | 2012-07-02 | Device and system for global four-dimensional information transmission |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102721969A true CN102721969A (en) | 2012-10-10 |
| CN102721969B CN102721969B (en) | 2013-11-06 |
Family
ID=46947785
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201210224638 Active CN102721969B (en) | 2012-07-02 | 2012-07-02 | Device and system for global four-dimensional information transmission |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102721969B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103472495A (en) * | 2013-09-22 | 2013-12-25 | 中国科学院武汉物理与数学研究所 | Vertical gravity gradient measuring sensor based on atom interference effect |
| CN108919370A (en) * | 2018-07-25 | 2018-11-30 | 赛特雷德（重庆）科技有限公司 | A kind of positioning device and method based on gravitation field measurement |
| CN113885100A (en) * | 2021-09-28 | 2022-01-04 | 中国船舶重工集团公司第七0七研究所 | Gravity gradiometer platform mass self-gradient compensation method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101853003A (en) * | 2010-01-14 | 2010-10-06 | 中国科学院国家授时中心 | Velocity correction based two-way time transfer method by using non GEO satellite |
| WO2010142765A2 (en) * | 2009-06-12 | 2010-12-16 | Thales | Gravimetric measurement method and system implementing the method |
-
2012
- 2012-07-02 CN CN 201210224638 patent/CN102721969B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010142765A2 (en) * | 2009-06-12 | 2010-12-16 | Thales | Gravimetric measurement method and system implementing the method |
| CN101853003A (en) * | 2010-01-14 | 2010-10-06 | 中国科学院国家授时中心 | Velocity correction based two-way time transfer method by using non GEO satellite |
Non-Patent Citations (4)
| Title |
|---|
| 《全球定位系统》 20080430 唐金元 等 "北斗卫星导航定位系统应用现状分析" 第26-30页 1、6-8 , 第2期 * |
| 《昆明理工大学学报（理工版）》 20060430 刘勇 等 "GPS-RTK技术在水下地形测量中应用研究" 第19-22页 1、6-8 第31卷, 第2期 * |
| 刘勇 等: ""GPS-RTK技术在水下地形测量中应用研究"", 《昆明理工大学学报（理工版）》 * |
| 唐金元 等: ""北斗卫星导航定位系统应用现状分析"", 《全球定位系统》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103472495A (en) * | 2013-09-22 | 2013-12-25 | 中国科学院武汉物理与数学研究所 | Vertical gravity gradient measuring sensor based on atom interference effect |
| CN103472495B (en) * | 2013-09-22 | 2016-01-20 | 中国科学院武汉物理与数学研究所 | Based on the vertical gradiometry sensor of intervening atom effect |
| CN108919370A (en) * | 2018-07-25 | 2018-11-30 | 赛特雷德（重庆）科技有限公司 | A kind of positioning device and method based on gravitation field measurement |
| CN108919370B (en) * | 2018-07-25 | 2019-11-29 | 赛德雷特(珠海)航天科技有限公司 | A kind of positioning device and method based on gravitation field measurement |
| CN113885100A (en) * | 2021-09-28 | 2022-01-04 | 中国船舶重工集团公司第七0七研究所 | Gravity gradiometer platform mass self-gradient compensation method |
| CN113885100B (en) * | 2021-09-28 | 2023-06-20 | 中国船舶重工集团公司第七0七研究所 | Gravity gradiometer platform mass self-gradient compensation method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102721969B (en) | 2013-11-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10935686B1 (en) | Utility locating system with mobile base station | |
| Deng et al. | Situation and development tendency of indoor positioning | |
| US9412270B2 (en) | Wireless vehicle detection system and associated methods having enhanced response time | |
| KR102096677B1 (en) | signal transmission Method, storage medium and network in a wide area positioning system(WAPS) | |
| CN108112070B (en) | Time synchronization method in UWB (ultra wide band) unidirectional positioning system | |
| US8473238B2 (en) | Temperature measurement correction using multiple temperature sensors | |
| JP2014503796A (en) | Wide-area positioning system | |
| CN102721969B (en) | Device and system for global four-dimensional information transmission | |
| CN101986765A (en) | Singlechip-based low-power consumption networking positioning instrument | |
| CN109921855A (en) | A kind of underwater wireless synchronization system and method based on miniature blue-green laser | |
| CN109981705A (en) | Self power generation intelligent energy positions shoes | |
| CN202770996U (en) | Device and system for global positioning based on GPS | |
| CN102520209A (en) | Quartz flexible accelerometer based on laser self-mixing interference | |
| US20160373889A1 (en) | Location accuracy improvement method and system using network elements relations and scaling methods | |
| JP2017526261A (en) | Beacon with multiple communication interfaces | |
| CN113959431B (en) | High-precision inter-satellite distance and time difference combined measurement method | |
| CN102902288B (en) | A kind of crystal oscillator with constant temperature control and calibration cell temperature-controlled process thereof | |
| Lei et al. | Hybsync: nanosecond wireless position and clock synchronization based on UWB communication with multisensors | |
| US20220303939A1 (en) | Systems and Methods for Location Determination of Base Station Facilities and Mobile User Equipment (UE) Devices in a Wireless Communication Network | |
| CN203055143U (en) | Light metering device | |
| KR101372962B1 (en) | Apparatus and method for measuring transmitting delay of transmitting station, system and method for generating standard time pulsesecond using loran??c signal | |
| Chen et al. | Research and implementation of improved SS-TWR TOA positioning method based on UWB | |
| Kong et al. | Wheelloc: practical and accurate localization for wheeled mobile targets via integrated sensing and communication | |
| US3805256A (en) | New temperature sonde | |
| KR102544178B1 (en) | RTK terminal apparatus, method for generating position information, distance service system and method using RTK terminal apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |