CN107688290A - A kind of application process during GNSS schools on high rail satellite - Google Patents
A kind of application process during GNSS schools on high rail satellite Download PDFInfo
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- CN107688290A CN107688290A CN201710632161.6A CN201710632161A CN107688290A CN 107688290 A CN107688290 A CN 107688290A CN 201710632161 A CN201710632161 A CN 201710632161A CN 107688290 A CN107688290 A CN 107688290A
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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
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- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
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- General Physics & Mathematics (AREA)
- Position Fixing By Use Of Radio Waves (AREA)
Abstract
The invention provides application process during a kind of GNSS schools on high rail satellite, the computational methods of data during including GNSS schools, GNSS receiver obtains real-time GNSS time by Autonomous Navigation Algorithm, calculates Star Service time and GNSS time difference, data during as GNSS schools；And housekeeping software to school when data using strategy, data are sent to housekeeping software during GNSS schools, data when housekeeping software use school, complete task during school, while ensure that system is safe during whole star.When present invention can be suitably applied to high rail satellite and utilizing " leakage " GNSS navigation signals to realize satellite school, improve the correcting delay precision of satellite, enhance the autonomous management ability of whole star, alleviate the burden of ground observing and controlling system, especially solve the problems, such as high rail satellite China overseas without ground observing and controlling system support in the case of autonomous school when, adapted to the demand for development of high rail satellite model.
Description
Technical field
The present invention relates to application process during a kind of GNSS schools on high rail satellite.
Background technology
On the high rail satellite of tradition, only by being realized during the school of ground during whole star school, including when remote control time service, collection lieutenant colonel and
Three kinds of methods during even school.
It is remotely controlled time service：Remote control time service is the basic point for reading the full time form noted on ground as On-Star system clock.
The function only uses in the abnormal condition such as ground test or in-orbit in-flight system clock switching/reset.
When collecting lieutenant colonel：When central computer uses remote measurement with ground control station pair, the time difference, which exceedes, when star limits scope, by
When ground carries out concentration school on star, system calibration when central computer is carried out using the time difference value of injection.
During uniform school：The clock drift rule of ground telemetering long-time statistical central computer, calculate the change of clock on star
Rate, corrected when being injected into the uniformity school being used on star to clock.
Instructed as can be seen that being relied primarily on when remote control time service and collection lieutenant colonel when school is set time and sent with ground control station
Mainly solve the clock drift problems of satellite hub computer to realize, during uniform school.Above-mentioned each method depends on ground
Face tracking telemetry and command station, satellite lack autonomous operation managerial ability.
With the continuous complication to satellite functional requirement and become more meticulous, improve the in-orbit autonomous management level of whole star, enhancing
Robustness, will be inevitable development trend.
Application of the GNSS system on low orbit satellite is very universal, but is not used formally also on high rail satellite.
After GNSS calibration methods are applied to high rail satellite, pressure of the high rail satellite to ground tracking and command network can be mitigated, reduced to external cloth
The dependence stood, while when TT＆C system breaks down or is interfered, keep satellite that there is stronger survival ability, this method
With great application potential.
To sum up, it has been an imperative job when on high rail satellite using GNSS schools.
The content of the invention
It is an object of the invention to provide application process during a kind of GNSS schools on high rail satellite, can strengthen satellite from
Main management ability, mitigate the pressure of ground observing and controlling net.By instructing method during school to be engaged with ground system, satellite can be achieved
The flexible selection of means during school, this method have very high correcting delay precision, adapt to the demand for development of satellite model.
The inventive method includes the use strategy two of data when the computational methods of data, housekeeping software are to school during GNSS schools
Point, by instructing method during school to be engaged with ground system, when the flexible school of satellite can be achieved, wherein：
The computational methods of data include during-GNSS schools：Satellite hub computer is sent by 1553B buses by the cycle of 1s
Star Service timing code, after GNSS receiver time of receipt (T of R) code, take out the current GNSS time of GNSS receiver and time delay amendment be fixed,
To send out the Star Service time by GNSS time and the central computer of amendment is carried out asking poor, obtains difference, and data are led to during as school
Cross bus and be sent to central computer.
Data is included using strategy when-housekeeping software is to school：Influenceed by orbit altitude, " leakage " GNSS navigation signals connect
Wild effect is stored in, so " unavailable " state occur once in a while in data during school.The use plan of data when housekeeping software is to school
Slightly it is exactly that housekeeping software presets the time difference upper limit, when data are more than school when GNSS schools during the upper limit, first determines whether that GNSS receiver is sent out
" whether data the can use during school " state sent, data when GNSS schools are just used only under " available " state, by housekeeping software
" function during GNSS schools " is arranged to " enable ".After housekeeping software is modified using data during GNSS schools to the Star Service time, when most
When data are 0 during new GNSS schools, represent to complete during school, then it is automatic that " function during GNSS schools " is arranged to " forbidding ", it is ensured that to pacify
System safety during complete whole star.
Compared with prior art, present invention can be suitably applied to high rail satellite utilizes " leakage " GNSS navigation signals to realize satellite school
When, the correcting delay precision of satellite is improved, enhances the autonomous management ability of whole star, alleviates the burden of ground observing and controlling system, especially
Problem when which solving the autonomous school in the case of high rail satellite is overseas supported in China without ground observing and controlling system, has adapted to high rail and has defended
The demand for development of star-like number.
Brief description of the drawings
The detailed description made by reading with reference to the following drawings to non-limiting example, further feature of the invention,
Objects and advantages will become more apparent upon：
Fig. 1 is that the present invention realizes the unit composition schematic diagram (minimum to be equipped with) for needing to be equipped with；
Process schematic when Fig. 2 is GNSS schools of the present invention；
Fig. 3 is that geostationary orbit receives " leakage " GNSS signal schematic diagram.
Embodiment
With reference to specific embodiment, the present invention is described in detail.Following examples will be helpful to the technology of this area
Personnel further understand the present invention, but the invention is not limited in any way.It should be pointed out that the ordinary skill to this area
For personnel, without departing from the inventive concept of the premise, some changes and improvements can also be made.These belong to the present invention
Protection domain.
Fig. 1 is that the present invention realizes the minimum outfit unit that satellite needs, wherein：The navigation signal that GNSS antenna will receive
GNSS preamplifiers are sent to, after signal is filtered amplification by GNSS preamplifiers, are sent to GNSS receiver, GNSS
After receiver completes real-time resolving, interacted by 1553B buses with central computer when realizing school.Fig. 1 is equipped with unit to be minimum
Schematic diagram, system reliability can be improved by backing up product in actual application.
Process schematic when Fig. 2 is GNSS schools of the present invention, process are as follows：
Satellite hub computer sends Star Service timing code by 1553B buses by the cycle of 1s, when GNSS receiver receives
Between after code, take out the current GNSS time of GNSS receiver and time delay amendment be fixed, by the GNSS time by amendment and center
Computer sends out the Star Service time and carries out asking poor, obtains difference, the GNSS time-error correction at the time difference=code moment time of receipt (T of R)
The time of (timing code transmission process time delay etc.)-time representation, data are sent to central computer by bus during as school.
Influenceed by orbit altitude, the reception of " leakage " GNSS navigation signals has wild effect, as shown in Figure 3.So school
When data occur " unavailable " state once in a while.Data is exactly that housekeeping software was preset on the time difference using strategy when housekeeping software is to school
Limit.When data are more than the school that housekeeping software prestores when GNSS schools during the upper limit, " number during school that GNSS receiver is sent is first determined whether
According to whether can use " state, data when GNSS schools are just used only under " available " state, by " function during GNSS schools " of housekeeping software
It is arranged to " enable ".After housekeeping software is modified using data during GNSS schools to the Star Service time, the number when newest GNSS schools
According to for 0 when, represent to complete during school, then it is automatic that " function during GNSS schools " is arranged to " forbidding ", it is ensured that system is safe during safety whole star.
The specific embodiment of the present invention is described above.It is to be appreciated that the invention is not limited in above-mentioned
Particular implementation, those skilled in the art can make a variety of changes or change within the scope of the claims, this not shadow
Ring the substantive content of the present invention.In the case where not conflicting, the feature in embodiments herein and embodiment can any phase
Mutually combination.
Claims (6)
- A kind of 1. application process during GNSS schools on high rail satellite, it is characterised in that including：The computational methods of data during GNSS schools, GNSS receiver obtain real-time GNSS time by Autonomous Navigation Algorithm, calculated Star Service time and GNSS time difference, data during as GNSS schools；The application method of data when housekeeping software is to school, data are sent to housekeeping software during GNSS schools, when housekeeping software uses school Data, task during school is completed, while ensure system safety during whole star.
- 2. application process during GNSS schools according to claim 1 on high rail satellite, it is characterised in that GNSS antenna will The navigation signal received is sent to GNSS preamplifiers, after signal is filtered amplification by GNSS preamplifiers, sends To GNSS receiver, after GNSS receiver completes real-time resolving, interacted by bus with central computer when realizing school.
- 3. application process during GNSS schools according to claim 2 on high rail satellite, it is characterised in that number during GNSS schools According to circular be：Satellite hub computer sends Star Service timing code by the bus cycles, when GNSS receiver receives Between after code, take out the current GNSS time of GNSS receiver and time delay amendment be fixed, by the GNSS time by amendment and center Computer sends out the Star Service time and carries out asking poor, obtains arrival time difference, and data are sent to central computer by bus during as school.
- 4. application process during GNSS schools according to claim 3 on high rail satellite, it is characterised in that satellite hub meter Calculation machine sends Star Service timing code by 1553B buses by the cycle of 1s.
- 5. application process during GNSS schools according to claim 3 on high rail satellite, it is characterised in that the time difference=receive The time of the GNSS time-error correction-time representation at timing code moment.
- 6. application process during GNSS schools according to claim 1 on high rail satellite, it is characterised in that：Housekeeping software pair The specifically used method of data is during school：Influenceed by orbit altitude, wild effect be present in the reception of " leakage " GNSS navigation signals, There is " unavailable " state once in a while in data during school, and housekeeping software presets the time difference upper limit, upper limit when data are more than school when GNSS schools When, " whether data can use during school " state that GNSS receiver is sent is first determined whether, GNSS is only just used under " available " state Data during school, " function during GNSS schools " of housekeeping software is arranged to " enable ", data are to star when housekeeping software utilizes GNSS schools After the business time is modified, when when newest GNSS schools, data are 0, represent to complete during school, then automatically will " work(during GNSS schools Can " be arranged to " forbidding ", it is ensured that system safety during safety whole star.
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| CN201710632161.6A CN107688290A (en) | 2017-07-28 | 2017-07-28 | A kind of application process during GNSS schools on high rail satellite |
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| CN201710632161.6A CN107688290A (en) | 2017-07-28 | 2017-07-28 | A kind of application process during GNSS schools on high rail satellite |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109212955A (en) * | 2018-09-19 | 2019-01-15 | 中国空间技术研究院 | A kind of multi-source Satellite system time intelligent management |
| CN110109155A (en) * | 2019-04-30 | 2019-08-09 | 北京控制工程研究所 | A kind of two-way calibration method interrupted on star without application software |
| CN111605734A (en) * | 2020-04-28 | 2020-09-01 | 北京控制工程研究所 | Filtering timing system and method for accurate synchronization of spacecraft three-super control satellite time |
| CN114815571A (en) * | 2022-03-31 | 2022-07-29 | 北京微纳星空科技有限公司 | Method and system for measuring satellite-ground time difference, storage medium and electronic equipment |
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| CN102520606A (en) * | 2011-11-15 | 2012-06-27 | 上海卫星工程研究所 | Aircraft system clock time correcting and redundancy correction method |
| CN102882586A (en) * | 2012-10-15 | 2013-01-16 | 北京空间飞行器总体设计部 | Satellite time synchronization system |
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| CN205945699U (en) * | 2016-05-26 | 2017-02-08 | 北京中电华大电子设计有限责任公司 | GNSS high accuracy time service / punctual device |
| CN106569242A (en) * | 2016-11-04 | 2017-04-19 | 中国科学院测量与地球物理研究所 | Global navigation satellite system (GNSS) single difference processing method of fixed reference satellite |
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Patent Citations (5)
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| CN102520606A (en) * | 2011-11-15 | 2012-06-27 | 上海卫星工程研究所 | Aircraft system clock time correcting and redundancy correction method |
| CN102882586A (en) * | 2012-10-15 | 2013-01-16 | 北京空间飞行器总体设计部 | Satellite time synchronization system |
| US20140269672A1 (en) * | 2013-03-15 | 2014-09-18 | Microsemi Frequency And Time Corporation | Distributed two-step clock |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109212955A (en) * | 2018-09-19 | 2019-01-15 | 中国空间技术研究院 | A kind of multi-source Satellite system time intelligent management |
| CN110109155A (en) * | 2019-04-30 | 2019-08-09 | 北京控制工程研究所 | A kind of two-way calibration method interrupted on star without application software |
| CN111605734A (en) * | 2020-04-28 | 2020-09-01 | 北京控制工程研究所 | Filtering timing system and method for accurate synchronization of spacecraft three-super control satellite time |
| CN114815571A (en) * | 2022-03-31 | 2022-07-29 | 北京微纳星空科技有限公司 | Method and system for measuring satellite-ground time difference, storage medium and electronic equipment |
| CN114815571B (en) * | 2022-03-31 | 2023-07-25 | 北京微纳星空科技有限公司 | Method and system for measuring satellite-ground time difference, storage medium and electronic equipment |
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Application publication date: 20180213 |
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