Free space time synchronization method based on natural light transmission
A free space and time synchronization technology, applied in free space transmission, time division multiplexing systems, electrical components, etc., can solve problems such as increased faults found, lifespan of artificial lasers, etc., to achieve the effect of low cost and convenient application
Pending Publication Date: 2022-07-05
四川阿秒科技有限公司
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Problems solved by technology
First of all, most of the free-space laser time synchronization experiments that have been reported must use artificial lasers, and artificial lasers have life problems, and the possibility of finding faults under continuous long-term working conditions is greatly increased
Secondly, the distance of the existing synchronous experiment has only reached the kilometer-level distance. To achieve a longer distance, if it is hundreds of kilometers or tens of thousands of kilometers, a super-powerful laser is required.
This is a challenge for laser manufacturing, both in terms of cost and reliability
Method used
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[0028] like figure 1 and figure 2As shown in the figure, it includes the following steps: S1: set up a first station and a second station, the first station and the second station condense the sunlight through the light source collector respectively; S2: the first station and the second station respectively receive the sunlight The sunlight is coupled into the beams formed by the respective sites, and the atomic clocks of the respective sites are encoded to obtain the encoded digital signals, which are modulated into the light beams by the spatial micromirror modulator; S3: The first site will modulate the modulated optical signals The photodetector of the second site is transmitted through the transmission device, and the second site transmits the modulated optical signal to the photodetector of the first site through the transmission device; S4: The photodetector of the first site receives the light of the second site The digital signal carried in the signal is decoded, an...
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The invention relates to the technical field of time synchronization, in particular to a free space time synchronization method based on natural light transmission, and the method comprises the following steps: S1, setting a first station and a second station, and enabling the first station and the second station to carry out the condensation of sunlight through a light source collector; s2, the first station and the second station respectively couple the received sunlight into light beams formed by the respective stations, atomic clocks of the respective stations are coded to obtain digital signals, and the digital signals firstly pass through a data combiner and then are modulated into the light beams through a space micromirror modulator; and S3, the first site transmits the modulated optical signal to the photoelectric detector of the second site through the transmission equipment, and the second site also transmits the modulated optical signal to the photoelectric detector of the first site through the transmission equipment. The system is used for solving the problem that ultra-long-distance free space time synchronization cannot be achieved, the whole machine body is powered by solar energy, and the cost of the whole system is reduced.
Description
Technical field [0001] The present invention relates to the technical field of time synchronization, and in particular to a free space time synchronization method based on natural light transmission. Background technique [0002] Among the seven basic physical quantities, time is a special one, and its measurement accuracy is currently the highest. It has played a very important role in basic research, aerospace, national security and other fields. A major feature of time is that it is easy to calibrate, and it is mathematically reciprocal to frequency. The accuracy of time is inseparable from the accuracy of frequency. Therefore, the two are often linked together and are called "time frequency", that is, "time frequency". time frequency". [0003] With higher-precision time measurement, the requirements for high-precision time synchronization technology are also rising. The ultimate goal of high-precision time synchronization is to synchronize different signal sources in...
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IPC IPC(8): H04J3/06H04B10/11
CPCH04J3/0638H04B10/11
Inventor 孟凇竹侯冬
Owner 四川阿秒科技有限公司