CN102624513A - Device for verifying synchronization precision of two-way satellite time transfer modem - Google Patents
Device for verifying synchronization precision of two-way satellite time transfer modem Download PDFInfo
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- CN102624513A CN102624513A CN2012100571988A CN201210057198A CN102624513A CN 102624513 A CN102624513 A CN 102624513A CN 2012100571988 A CN2012100571988 A CN 2012100571988A CN 201210057198 A CN201210057198 A CN 201210057198A CN 102624513 A CN102624513 A CN 102624513A
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Abstract
The invention relates to a device for verifying the synchronization precision of a two-way satellite time transfer modem. The device comprises a first frequency distributor, a second frequency distributor, a first time generation distributor, a second time generation distributor, a time interval counter and a time relay, wherein the first frequency distributor and the first time generation distributor receiver receive a clock signal from a first rubidium atomic clock respectively; the second frequency distributor and the second time generation distributor receive a clock signal from a second rubidium atomic block respectively; the first and second time generation distributors transmit own clock signals to the time interval counter respectively; the time interval counter measures an output time difference of the first and second time generation distributors, and transmits the time difference to a master control computer; and the second time generation distributor is also connected with the time relay. The device is easy to operate, an error can be difficultly generated, and test is facilitated.
Description
Technical field
The present invention relates to a kind of device that is used to verify synchronization accuracy, particularly be used for the device of the two-way time ratio of satellite the checking of modulator-demodulator synchronization accuracy.
Background technology
The two-way time ratio of satellite accurately obtains time difference between comparison station to modulator-demodulator through the exchange measured value to utilizing special-purpose time ratio.Because modulator-demodulator is the nucleus equipment of the two-way time ratio of satellite to system, its ability final decision the comparison accuracy of entire comparison system.Therefore the two-way time ratio of satellite is verified the synchronization accuracy of modulator-demodulator and just seemed very important.But the two-way time ratio of traditional satellite is more loaded down with trivial details to modulator-demodulator synchronization accuracy verification mode, needs multiple devices to be used, complicated operation, and easy error is inconvenient to test.
Summary of the invention
For avoiding the deficiency of above prior art, the present invention proposes a kind of device that is used for the two-way time ratio of satellite to the checking of modulator-demodulator synchronization accuracy.
The object of the invention is realized through following technical scheme:
Be used for the device of the two-way time ratio of satellite to the checking of modulator-demodulator synchronization accuracy; This device comprises first and second frequency dividers; First and second times produced distributor; Time-interval counter; The time relay, the said first frequency distributor and the very first time produce distributor and receive the clock signal from first rubidium atomic clock respectively, and the said second frequency distributor and second time produce distributor and receive the clock signal from second rubidium atomic clock respectively; The clock signal that said very first time generation distributor and second time generation distributor will receive respectively separately is transferred to time-interval counter; This time-interval counter is measured very first time generation distributor and second time produced the time difference of distributor output and this time difference is transferred to main control computer, and said second time produces distributor and also links to each other with the said time relay, and said main control computer carries out synchronization accuracy based on the said time difference to the input signal from two modulator-demodulators and verifies.
Further, the enabling nulse of said time-interval counter is the very first time to produce the pps pulse per second signal that distributor produces, and it closes gate pulse is second time to produce the pps pulse per second signal that distributor produces.
Further, said main control computer is connected with display screen.
The invention has the advantages that:
The inner high resolution time-interval counter that is equipped with of the present invention; Can directly carry out the checking of synchronization accuracy to modulator-demodulator to the two-way time ratio of satellite commonly used at present; To remove the loaded down with trivial details, complicated of synchronization accuracy verification mode in the past from; And the present invention is simple to operate, is not easy to make mistakes, also convenient test.
Description of drawings
Fig. 1: apparatus of the present invention structural representation;
Fig. 2: the present invention tests connection layout.
Embodiment
As shown in Figure 1; The present invention is used for the device of the two-way time ratio of satellite to the checking of modulator-demodulator synchronization accuracy, and this device comprises first frequency distributor 1 and second frequency distributor 2, and the very first time produces distributor 3 and second time produced distributor 4; Time-interval counter 5; The time relay 6, said first frequency distributor 1 produce distributor 3 with the very first time and link to each other with first rubidium atomic clock 7 respectively, and said second frequency distributor 2 produces distributor 4 with second time and links to each other with second rubidium atomic clock 8 respectively; The said very first time produces distributor 3 and links to each other with said time-interval counter 5 respectively with second time generation distributor 4; This time-interval counter 5 links to each other with main control computer 9, and said second time produces distributor 4 and links to each other with the said time relay 6, and said main control computer 9 is connected with display screen 10.
Connection layout when testing for the present invention like Fig. 2, said first and second rubidium atomic clocks are respectively as the clock source of each module work in the device; Two cover frequency dividers produce distributor with the time and are connected with two atomic clocks respectively, and the clock signal of 1pps signal and 10MHz is provided for outside two tested modulator-demodulators; The high resolution time-interval counter is measured the time difference that two times produce the 1pps signal of distributor output, simultaneously measurement data is transferred to main control computer; Outside two tested modulator-demodulators and the measured value that installs inner time-interval counter are gathered and handled to main control computer; Utilize tested modulator-demodulator measured value to calculate through the clock correction value of two-way time ratio to obtaining; And ask poor with the clock correction value that the inner time-interval counter of device is measured and handle, the result who repeatedly measures promptly verifies the net synchronization capability of modulator-demodulator.Display screen shows various result of calculations and intermediate data information, adopts touch-screen simultaneously, is convenient to user's operation; The time relay guarantees that two times produce distributors and do not power up simultaneously, so that make the time difference of two 1pps can be too not little, and convenient test and main control computer data processing.
The present invention is used for the power supply employing Switching Power Supply of the two-way time ratio of satellite to the device of modulator-demodulator synchronization accuracy checking; Be input as the alternating current of 220V/50Hz, peak power output 220W provides+12V; The direct voltage output of+5V and+3.3V is each module for power supply in the device.Produce distributor for second time and then will supply power, guarantee to make the time difference of two 1pps can be too not little like this, the convenient test and the main control computer data processing through the time relay.
Time produces distributor and receives the 10MHz frequency marking input that rubidium atomic clock provides, and carries out frequency division then and handles, and obtains the pps pulse per second signal with this frequency marking (10MHz) coherent, and outputs to the pulse per second (PPS) input of device outside as tested modulator-demodulator.Time produces distributor and adopts the independent plate card structure, and its core realization device adopts the FPGA of Xilinx company to realize; Frequency divider receives the 10MHz signal that rubidium atomic clock provides, and isolates processing and amplifying then, obtains the multipath clock signal with the identical performance of Rb atom frequency marking, through external interface output, as the master clock of tested modulator-demodulator or supply other equipment to use.The high resolution time-interval counter adopts the card insert type design; Its measurement resolution is less than 0.1ns; Time produces the enabling nulse of the pps pulse per second signal of distributor 2 generations as it; Time produces the pulse per second (PPS) of distributor 8 outputs as closing gate pulse, and the time of measuring then produces the time interval value that distributor 2 and time produce distributor interval counter 8 time of advent 4, and this time interval value is sent in the main control computer handles; The data that main control computer is mainly accomplished outside two the tested modulator-demodulators and the time-interval counter of device inside read and data processing work; It calculates the clock correction information that obtains through two modulator-demodulators according to the two-way time ratio of satellite to principle; The clock correction value that records with time-interval counter then compares, and obtains the net synchronization capability of modulator-demodulator.Final these information are all shown by touch display screen, carry out man-machine interaction.
Each parts of apparatus of the present invention are configurable in the cabinet of a standard 3U structure, and cabinet adopts each functional unit card insert type design, are convenient to safeguard and the function expansion.This device external output port is plate in the back all, has two serial ports and 8 bnc interfaces.External output signal comprises: 1ppsA-1,1ppsA-2,1ppsB-1; 1ppsB-2,10MHzA-1,10MHzA-2; 10MHzB-1,10MHzB-2, they adopt bnc interface; Be respectively outside two tested modulator-demodulators the frequency standard signal of 1pps signal and 10MHz is provided, the while also can be other equipment provides clock source signals; This device and outside tested modulator-demodulator carry out exchanges data through serial ports 1 and serial ports 2 respectively.
Should be appreciated that the above detailed description of technical scheme of the present invention being carried out by preferred embodiment is schematic and nonrestrictive.Those of ordinary skill in the art is reading on the basis of specification of the present invention and can make amendment to the technical scheme that each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these are revised or replacement, do not make the spirit and the scope of the essence disengaging various embodiments of the present invention technical scheme of relevant art scheme.
Claims (3)
1. be used for the device of the two-way time ratio of satellite to the checking of modulator-demodulator synchronization accuracy; It is characterized in that; This device comprises first and second frequency dividers; First and second times produced distributor, time-interval counter, the time relay; The said first frequency distributor and the very first time produce distributor and receive the clock signal from first rubidium atomic clock respectively; Said second frequency distributor and second time generation distributor receive the clock signal from second rubidium atomic clock respectively, and the clock signal that said very first time generation distributor and second time generation distributor will receive respectively separately is transferred to time-interval counter, and the time difference that this time-interval counter measurement very first time generation distributor and second time generation distributor are exported also is transferred to main control computer with this time difference; Said second time produces distributor and also links to each other with the said time relay, and said main control computer carries out the synchronization accuracy checking based on the said time difference to the input signal from two modulator-demodulators.
2. a kind of device that is used for the two-way time ratio of satellite to the checking of modulator-demodulator synchronization accuracy according to claim 1; It is characterized in that; The enabling nulse of said time-interval counter is the very first time to produce the pps pulse per second signal that distributor produces, and it closes gate pulse is second time to produce the pps pulse per second signal that distributor produces.
3. a kind of device that is used for the two-way time ratio of satellite to the checking of modulator-demodulator synchronization accuracy according to claim 1 is characterized in that said main control computer is connected with display screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2012100571988A CN102624513A (en) | 2012-03-06 | 2012-03-06 | Device for verifying synchronization precision of two-way satellite time transfer modem |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012100571988A CN102624513A (en) | 2012-03-06 | 2012-03-06 | Device for verifying synchronization precision of two-way satellite time transfer modem |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104199054A (en) * | 2014-08-22 | 2014-12-10 | 北京无线电计量测试研究所 | Preprocessing method for common view data of Beidou satellite navigation system |
| CN105071851A (en) * | 2014-12-30 | 2015-11-18 | 北京无线电计量测试研究所 | Device and method for correcting bidirectional time frequency transmission system of satellite |
| CN106452561A (en) * | 2016-09-27 | 2017-02-22 | 北京无线电计量测试研究所 | Satellite bidirectional time alignment system among multiple stations |
| CN107664947A (en) * | 2017-09-06 | 2018-02-06 | 北京无线电计量测试研究所 | A kind of device and method of Two Way Satellite Time Transfer to system calibration |
| CN109039496A (en) * | 2018-08-23 | 2018-12-18 | 北京无线电计量测试研究所 | A kind of two-way pumping station modem Delay Variation aided measurement device and method |
| US20230232350A1 (en) * | 2022-01-19 | 2023-07-20 | Intelligent Fusion Technology, Inc. | Methods and systems for time synchronization among unmanned aerial systems |
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| US7327699B1 (en) * | 1999-03-30 | 2008-02-05 | Schaefer Wolfgang | Method and device for synchronisation of distant clocks to a central clock via satellite |
| CN101251594A (en) * | 2008-04-03 | 2008-08-27 | 北京航空航天大学 | Bidirectional ranging and time comparision process terminal |
| CN102064827A (en) * | 2010-11-11 | 2011-05-18 | 国网电力科学研究院 | Rubidium oscillator-based standard frequency and time adjusting method |
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2012
- 2012-03-06 CN CN2012100571988A patent/CN102624513A/en active Pending
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| US7327699B1 (en) * | 1999-03-30 | 2008-02-05 | Schaefer Wolfgang | Method and device for synchronisation of distant clocks to a central clock via satellite |
| CN101251594A (en) * | 2008-04-03 | 2008-08-27 | 北京航空航天大学 | Bidirectional ranging and time comparision process terminal |
| CN102064827A (en) * | 2010-11-11 | 2011-05-18 | 国网电力科学研究院 | Rubidium oscillator-based standard frequency and time adjusting method |
Non-Patent Citations (7)
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104199054A (en) * | 2014-08-22 | 2014-12-10 | 北京无线电计量测试研究所 | Preprocessing method for common view data of Beidou satellite navigation system |
| CN105071851A (en) * | 2014-12-30 | 2015-11-18 | 北京无线电计量测试研究所 | Device and method for correcting bidirectional time frequency transmission system of satellite |
| CN105071851B (en) * | 2014-12-30 | 2018-06-29 | 北京无线电计量测试研究所 | A kind of calibrating installation and method of two-way satellite time and frequency transfer system |
| CN106452561A (en) * | 2016-09-27 | 2017-02-22 | 北京无线电计量测试研究所 | Satellite bidirectional time alignment system among multiple stations |
| CN106452561B (en) * | 2016-09-27 | 2019-12-13 | 北京无线电计量测试研究所 | system and method for comparing satellite bidirectional time among multiple stations |
| CN107664947A (en) * | 2017-09-06 | 2018-02-06 | 北京无线电计量测试研究所 | A kind of device and method of Two Way Satellite Time Transfer to system calibration |
| CN109039496A (en) * | 2018-08-23 | 2018-12-18 | 北京无线电计量测试研究所 | A kind of two-way pumping station modem Delay Variation aided measurement device and method |
| CN109039496B (en) * | 2018-08-23 | 2021-06-29 | 北京无线电计量测试研究所 | Auxiliary measurement device and method for time delay change of bidirectional comparison modem |
| US20230232350A1 (en) * | 2022-01-19 | 2023-07-20 | Intelligent Fusion Technology, Inc. | Methods and systems for time synchronization among unmanned aerial systems |
| US11864140B2 (en) * | 2022-01-19 | 2024-01-02 | Intelligent Fusion Technology, Inc. | Methods and systems for time synchronization among unmanned aerial systems |
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Application publication date: 20120801 |