CN105573110A - Leap second detection system and method of GNSS time synchronization system - Google Patents
Leap second detection system and method of GNSS time synchronization system Download PDFInfo
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- CN105573110A CN105573110A CN201610078245.5A CN201610078245A CN105573110A CN 105573110 A CN105573110 A CN 105573110A CN 201610078245 A CN201610078245 A CN 201610078245A CN 105573110 A CN105573110 A CN 105573110A
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- leap
- scene
- clock synchronization
- navigation signal
- gnss clock
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- G—PHYSICS
- G04—HOROLOGY
- G04R—RADIO-CONTROLLED TIME-PIECES
- G04R20/00—Setting the time according to the time information carried or implied by the radio signal
- G04R20/02—Setting the time according to the time information carried or implied by the radio signal the radio signal being sent by a satellite, e.g. GPS
- G04R20/04—Tuning or receiving; Circuits therefor
Abstract
The invention provides a leap second detection system of a GNSS time synchronization system. The system includes a satellite navigation signal simulator, a navigation signal control system for configuring the satellite navigation signal simulator and a monitoring computer; the monitoring computer judges whether the GNSS time synchronization system has a leap second function through monitoring whether time parameters solved and outputted by the GNSS time synchronization system are consistent with the configuration state of navigation messages outputted by the satellite navigation signal simulator. The invention also provides a leap second detection method of a GNSS time synchronization system. Based on the satellite navigation signal simulator, the use of the system and method is convenient, and the leap second verification of the GNSS time synchronization system can be realized.
Description
Technical field
The present invention relates to field of satellite navigation, particularly relate to a kind of leap second detection system and method for GNSS clock synchronization system.
Background technology
GNSS clock synchronization system is as a kind of basic guarantee platform, and play more and more important effect in the every profession and trade in the fields such as communication, electric power, traffic, multiple terminal equipment all requires correct time synchronizing information, and can not occur mistake.Along with the construction and development of Beidou satellite navigation system, in GNSS clock synchronization system, will Beidou satellite system be more and more used to carry out time service.
In order to ensure, issuing time accurately and reliably, and GNSS clock synchronization system must possess leap second adjustment function.At present, 26 leap seconds have been carried out in the whole world.When the last 2015 leap second in Beijing time July 1 day morning 7 59 points 59 seconds and 8 time 00 point occur between 00 second.This " one second " of increasing, for some special industries, is enough to bring very large impact.It is reported, last leap second on June 30th, 2012, at that time Reddit gone offline one and a half hours, the website such as Gawker, LinkedIn and Yelp is all absorbed in temporary service interruptions state.In addition, Major Airlines reservation system AmadeusAltea is also affected, and under AUSTRALIAN AIRLINES and Wei Zhen, the navigational system of AUSTRALIAN AIRLINES causes confusion and causes flight planning to be interrupted.All exist for many satellite navigation systems, and wherein more crucial for dipper system, and a lot of for some reason equipment possibly cannot normally to the correction expected leap second.Therefore each receiver manufacturer and equipment manufacturers, particularly those provide time dissemination system manufacturer and with the department of time synchronized tight association and unit, more should have corresponding counter-measure and solution.
In current test, how to process for GNSS clock synchronization system and state to some extent leap second, but for how verifying that the correctness of GNSS clock synchronization system process leap second does not really have correlation method.
GNSS clock synchronization system by receive the Global Navigation System navigation message of broadcasting obtain leap second information and according to leap second information and navigational system Time Calculation go out the UTC time.Mainly be divided into two classes during GNSS clock synchronization system leap second function: the first kind, the leap second information that GNSS clock synchronization system can correctly obtain in navigation message also correctly exports the UTC time accordingly; Equations of The Second Kind, when leap second adjusts, GNSS clock synchronization system can leap second adjustment information ensure correctly before and after leap second adjustment to export the UTC time correctly in navigation by recognition text.
Adjust time leap second in history leap second is June 30 then or Dec 31 at every turn substantially, therefore the leap second function of real satellite signal testing GNSS clock synchronization system is utilized not possess versatility, first kind testing requirement can only be met, Equations of The Second Kind testing requirement cannot be met, GNSS clock synchronization system cannot be tested at any time and whether can correctly identify leap second adjustment information.
Summary of the invention
In order to solve prior art Problems existing, the invention provides a kind of leap second detection system of GNSS clock synchronization system, comprising:
Satellite navigation signal simulator, for generation of navigation message;
Navigation signal control system, connects described satellite navigation signal simulator, exports the leap second parameter of navigation message for configuring described satellite navigation signal simulator; And
Monitoring computer, whether the configuration status that the time parameter being resolved output by monitoring GNSS clock synchronization system and described satellite navigation signal simulator export navigation message is consistent, judges whether described GNSS clock synchronization system possesses leap second function.
Optionally, the leap second detection system of GNSS clock synchronization system also comprises atomic clock, connects described navigation signal control system, for providing atomic frequency standard signal for described navigation signal control system.
Optionally, before described satellite navigation signal simulator produces navigation message, first realize start preheating.
Optionally, the leap second parameter of described navigation message comprises: navigation signal pattern, power, leap second time information and user configuration information.
Optionally, described navigation signal control system comprises GPS navigation system and BDS navigational system, is respectively used to provide detect scene GPS leap second and BDS leap second detects scene.
Optionally, to detect described GPS leap second positive leap second that scene comprising scene and negative leap second scene, positive leap second scene in parameter Δ t
lsF=Δ t
ls+ 1s, negative leap second scene in parameter Δ t
lsF=Δ t
ls-1s.
Optionally, to detect described BDS leap second positive leap second that scene comprising scene and negative leap second scene, positive leap second scene in parameter Δ t
lsF=Δ t
ls+ 1s, negative leap second scene in parameter Δ t
lsF=Δ t
ls-1s.
Optionally, the positive leap second that the temporal information state change that described monitoring computer exports according to described GNSS clock synchronization system judging or negative leap second, and to compare with the configuration status that this and described satellite navigation signal simulator export text.
The present invention also provides a kind of leap second detection method of GNSS clock synchronization system, comprising:
Open the satellite navigation signal simulator for generation of navigation message;
The leap second parameter that described satellite navigation signal simulator exports navigation message is configured by navigation signal control system;
Run described navigation signal control system; And
Whether the configuration status that the time parameter that monitoring computer monitoring GNSS clock synchronization system resolves output and described satellite navigation signal simulator export navigation message is consistent, judges whether described GNSS clock synchronization system possesses leap second function.
Optionally, the leap second detection method of described GNSS clock synchronization system also comprises and connects atomic clock to described navigation signal control system to provide atomic frequency standard signal.
Optionally, after opening described satellite navigation signal simulator, first carry out preheating again to its configuration parameter.
Optionally, the leap second parameter of described navigation message comprises: navigation signal pattern, power, leap second time information and user configuration information.
Optionally, described navigation signal control system comprises GPS navigation system and BDS navigational system, is respectively used to provide detect scene GPS leap second and BDS leap second detects scene.
Optionally, to detect described GPS leap second positive leap second that scene comprising scene and negative leap second scene, positive leap second scene in parameter Δ t
lsF=Δ t
ls+ 1s, negative leap second scene in parameter Δ t
lsF=Δ t
ls-1s.
Optionally, to detect described BDS leap second positive leap second that scene comprising scene and negative leap second scene, positive leap second scene in parameter Δ t
lsF=Δ t
ls+ 1s, negative leap second scene in parameter Δ t
lsf=Δ t
ls-1s.
Optionally, the positive leap second that the temporal information state change that described monitoring computer exports according to described GNSS clock synchronization system judging or negative leap second, and to compare with the configuration status that this and described satellite navigation signal simulator export text.
The present invention is directed to existing measuring technology above shortcomings, propose a kind of leap second detection system of GNSS clock synchronization system, this system comprises satellite navigation signal simulator, configures the navigation signal control system of described satellite navigation signal simulator and monitoring computer.Whether the configuration status that monitoring computer resolves output time parameter by monitoring GNSS clock synchronization system and described satellite navigation signal simulator export navigation message is consistent, judges whether described GNSS clock synchronization system possesses leap second function.The present invention is the corresponding leap second detection method proposing a kind of GNSS clock synchronization system also, based on satellite navigation signal simulator, easy to use, can realize the checking of GNSS clock synchronization system leap second.
Accompanying drawing explanation
Fig. 1 is GNSS clock synchronization system described in one embodiment of the invention leap second detection system structural representation;
Fig. 2 is GNSS clock synchronization system described in one embodiment of the invention leap second detection method process flow diagram;
Fig. 3 is for detecting the frame structure schematic diagram of Subframe4, page18 in scene navigation message GPS leap second in GNSS clock synchronization system described in one embodiment of the invention;
Fig. 4 is for detecting the frame structure schematic diagram of Subframe5, page10 in scene navigation message BDS leap second in GNSS clock synchronization system described in one embodiment of the invention.
Embodiment
Consider that simulation time and the textual information of satellite signal simulator can be edited, when therefore testing the leap second function of GNSS clock synchronization system, satellite signal simulator can be utilized to produce leap second information detect GNSS clock synchronization system and export whether leap second value in data is consistent with simulator leap second Configuration Values judges that whether its function is correct leap second.
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.According to the following describes and claims, advantages and features of the invention will be clearer.It should be noted that, accompanying drawing all adopts the form that simplifies very much and all uses non-ratio accurately, only in order to object that is convenient, the aid illustration embodiment of the present invention lucidly.
The invention provides a kind of leap second detection system of GNSS clock synchronization system, as shown in Figure 1, comprising:
Satellite navigation signal simulator 10, for generation of navigation message;
Navigation signal control system 20, connects described satellite navigation signal simulator 10, exports the leap second parameter of navigation message for configuring described satellite navigation signal simulator 10; And
Monitoring computer 30, whether the configuration status that the time parameter exported by monitoring GNSS clock synchronization system 40 and described satellite navigation signal simulator 10 export text is consistent, judges whether described GNSS clock synchronization system 40 possesses leap second function.
Concrete, the leap second detection system of GNSS clock synchronization system 40 of the present invention also comprises atomic clock 50, connects described navigation signal control system 20, for providing atomic frequency standard signal for described navigation signal control system 20.Selected atomic frequency standard frequency accuracy should be better than satellite navigation signal simulator 10 frequency accuracy order of magnitude.The navigation signal frequency that satellite navigation signal simulator 10 possesses should cover the navigation signal frequency that tested GNSS clock synchronization system 40 can receive.
In the present embodiment, navigation signal control system 20 control leap second parameter that satellite navigation signal simulator 10 exports navigation message comprise the pattern of navigation signal, power, leap second time information and customer position information, such as select to detect scene GPS leap second, BDS leap second detect scene.Accordingly, navigation signal control system 20 comprises GPS navigation system 21 and BDS navigational system 22, is respectively used to provide detect scene GPS leap second and BDS leap second detects scene.
The present invention also provides a kind of leap second detection method of GNSS clock synchronization system, as shown in Figure 2, comprising:
Open the satellite navigation signal simulator for generation of navigation message;
The leap second parameter that described satellite navigation signal simulator exports navigation message is configured by navigation signal control system;
Run described navigation signal control system; And
Whether the configuration status that monitoring computer resolves output time parameter by monitoring GNSS clock synchronization system and described satellite navigation signal simulator export navigation message is consistent, judges whether described GNSS clock synchronization system possesses leap second function.
The present invention is described in further detail below in conjunction with embodiment and accompanying drawing.
The first step, connects atomic clock 50, provides outside atomic frequency standard signal to satellite navigation signal simulator 10, opens satellite navigation signal simulator 10 and more than preheating 30min.
Second step, navigation signal control system 20 is called corresponding leap second and is detected scene, and this scene has following features:
Satellite navigation signal simulator 10 simulation time and stand-by time (as 23h50min00s-2008 on May 5th, 2008 23h00min00s on May 6) are set, select the corresponding navigational system of satellite navigation signals (GPS navigation system 21/BDS navigational system 22), transit square angle value is set (as N31
0, E121
0);
If detect scene (positive leap second scene) GPS leap second, the Subframe4 in this scene navigational text, in page18, arranges WN
lsf, DN, Δ t
ls, Δ t
lsFparameter value is respectively 454,2,16,17, and corresponding scale-of-two is (11000110,00000010,00010000,00010001), as shown in Figure 3.
If detect scene (negative leap second scene) GPS leap second, Subframe4 in this scene navigational text, in page18, WNLsf, DN are set, Δ tLs, Δ tLsF parameter value be respectively 454,2,16,15, corresponding scale-of-two is (11000110,00000010,00010000,0001111), as shown in Figure 3.
If detect scene (positive leap second scene) BDS leap second, Subframe5 in this scene navigational text, in page10, WNLsf, DN are set, Δ tLs, Δ tLsF parameter value be respectively 454,1,2,3, corresponding scale-of-two is (11000110,00000001,00000010,00000011), as shown in Figure 4.
If detect scene (negative leap second scene) BDS leap second, Subframe5 in this scene navigational text, in page10, WNLsf, DN are set, Δ tLs, Δ tLsF parameter value be respectively 454,1,2,1, corresponding scale-of-two is (11000110,00000001,00000010,00000001), as shown in Figure 4.
Detect text parameter WNLsf, DN, Δ tLs, Δ tLsF parameter value in scene above-mentioned leap second to calculate according to control interface document convention, and carry out corresponding binary coding.After editing navigation text, preserving configuration file is corresponding leap second detect scene.
3rd step, runs navigation signal control system 20, calls corresponding GPS/BDS leap second and detect scene, satellite navigation signal simulator 10 export corresponding radiofrequency signal and leap second information; GNSS clock synchronization system 40 receive corresponding radiofrequency signal and leap second information, monitoring computer 30 monitors state change (positive leap second or negative leap second) that GNSS clock synchronization system 40 resolves the temporal information of output, and analyzes the consistance exporting leap second with satellite navigation signal simulator 10.In the present embodiment, the positive leap second that the UTC temporal information state change that monitoring computer 30 exports according to GNSS clock synchronization system 40 judging whether to be and negative leap second, and to compare with the value that this and satellite navigation signal simulator 10 are arranged.
Concrete, if monitoring computer 30 monitors GNSS clock synchronization system 40, to resolve the time parameter of output consistent with satellite navigation signal simulator 10 configuration status, then judgement GNSS clock synchronization system 40 possesses leap second function, otherwise does not then possess.
The present invention is directed to existing measuring technology above shortcomings, propose a kind of leap second detection system of GNSS clock synchronization system, this system comprises satellite navigation signal simulator, configures the navigation signal control system of described satellite navigation signal simulator and monitoring computer.Whether the configuration status that monitoring computer resolves output time parameter by monitoring GNSS clock synchronization system and described satellite navigation signal simulator export navigation message is consistent, judges whether described GNSS clock synchronization system possesses leap second function.The present invention is the corresponding leap second detection method proposing a kind of GNSS clock synchronization system also, based on satellite navigation signal simulator, easy to use, can realize the checking of GNSS clock synchronization system leap second.
Obviously, those skilled in the art can carry out various change and modification to invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (16)
1. a leap second detection system for GNSS clock synchronization system, is characterized in that, comprising:
Satellite navigation signal simulator, for generation of navigation message;
Navigation signal control system, connects described satellite navigation signal simulator, exports the leap second parameter of navigation message for configuring described satellite navigation signal simulator; And
Monitoring computer, whether the configuration status that the time parameter being resolved output by monitoring GNSS clock synchronization system and described satellite navigation signal simulator export navigation message is consistent, judges whether described GNSS clock synchronization system possesses leap second function.
2. the leap second detection system of GNSS clock synchronization system as claimed in claim 1, is characterized in that, also comprise atomic clock, connect described navigation signal control system, for providing atomic frequency standard signal for described navigation signal control system.
3. the leap second detection system of GNSS clock synchronization system as claimed in claim 1, is characterized in that, before described satellite navigation signal simulator produces navigation message, first realizes start preheating.
4. the leap second detection system of GNSS clock synchronization system as claimed in claim 1, it is characterized in that, the leap second parameter of described navigation message comprises: navigation signal pattern, power, leap second time information and user configuration information.
5. the leap second detection system of GNSS clock synchronization system as claimed in claim 1, it is characterized in that, described navigation signal control system comprises GPS navigation system and BDS navigational system, is respectively used to provide detect scene GPS leap second and BDS leap second detects scene.
6. the leap second detection system of GNSS clock synchronization system as claimed in claim 5, is characterized in that, to detect described GPS leap second positive leap second that scene comprising scene and negative leap second scene, positive leap second scene in parameter Δ t
lsF=Δ t
ls+ 1s, negative leap second scene in parameter Δ t
lsF=Δ t
ls-1s.
7. the leap second detection system of GNSS clock synchronization system as claimed in claim 5, is characterized in that, to detect described BDS leap second positive leap second that scene comprising scene and negative leap second scene, positive leap second scene in parameter Δ t
lsF=Δ t
ls+ 1s, negative leap second scene in parameter Δ t
lsF=Δ
tLs-1s.
8. the leap second detection system of GNSS clock synchronization system as claimed in claim 1, it is characterized in that, the positive leap second that the temporal information state change that described monitoring computer exports according to described GNSS clock synchronization system judging or negative leap second, and to compare with the configuration status that this and described satellite navigation signal simulator export text.
9. a leap second detection method for GNSS clock synchronization system, is characterized in that, comprising:
Open the satellite navigation signal simulator for generation of navigation message;
The leap second parameter that described satellite navigation signal simulator exports navigation message is configured by navigation signal control system;
Run described navigation signal control system; And
Whether the configuration status that monitoring computer resolves output time parameter by monitoring GNSS clock synchronization system and described satellite navigation signal simulator export navigation message is consistent, judges whether described GNSS clock synchronization system possesses leap second function.
10. the leap second detection method of GNSS clock synchronization system as claimed in claim 9, is characterized in that, also comprises and connects atomic clock to described navigation signal control system to provide atomic frequency standard signal.
The leap second detection method of 11. GNSS clock synchronization systems as claimed in claim 9, is characterized in that, after opening described satellite navigation signal simulator, first carries out preheating again to its configuration parameter.
The leap second detection method of 12. GNSS clock synchronization systems as claimed in claim 9, it is characterized in that, the leap second parameter of described navigation message comprises: navigation signal pattern, power, leap second time information and user configuration information.
The leap second detection method of 13. GNSS clock synchronization systems as claimed in claim 9, it is characterized in that, described navigation signal control system comprises GPS navigation system and BDS navigational system, is respectively used to provide detect scene GPS leap second and BDS leap second detects scene.
The leap second detection method of 14. GNSS clock synchronization systems as claimed in claim 13, is characterized in that, to detect described GPS leap second positive leap second that scene comprising scene and negative leap second scene, positive leap second scene in parameter Δ t
lsF=Δ t
ls+ 1s, negative leap second scene in parameter Δ t
lsF=Δ t
ls-1s.
The leap second detection method of 15. GNSS clock synchronization systems as claimed in claim 13, is characterized in that, to detect described BDS leap second positive leap second that scene comprising scene and negative leap second scene, positive leap second scene in parameter Δ t
lsF=Δ t
ls+ 1s, negative leap second scene in parameter Δ t
lsF=Δ t
ls-1s.
The leap second detection method of 16. GNSS clock synchronization systems as claimed in claim 9, it is characterized in that, the positive leap second that the temporal information state change that described monitoring computer exports according to described GNSS clock synchronization system judging or negative leap second, and to compare with the configuration status that this and described satellite navigation signal simulator export text.
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| CN109212558A (en) * | 2018-07-25 | 2019-01-15 | 南瑞集团有限公司 | A kind of electric system satellite time disturbed test system and test method |
| CN111007712A (en) * | 2019-03-25 | 2020-04-14 | 和芯星通科技(北京)有限公司 | Leap second estimation method and device and computer-readable storage medium |
| CN115575982A (en) * | 2022-11-24 | 2023-01-06 | 中汽研软件测评(天津)有限公司 | Method, apparatus and storage medium for determining robustness of vehicle-mounted satellite positioning system |
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