Laser & Optoelectronics Progress, Volume. 56, Issue 1, 011204(2019)
Time Synchronization in Laser Ranging with Multi-Receiving Telescopes Based on Fiber-Time-Frequency Transfer
Figures & Tables(8)
Fig. 2. Accuracy test of time synchronization between local and remote terminals in fiber-time-frequency transfer device (1PPS signal)
Fig. 3. Fiber-time-frequency transfer device. (a) Remote signal receiving terminal; (b) local signal transmitting terminal
Fig. 4. Laser ranging to ground targets installed at 1.56 m telescope by 1.56 m/60 cm dual-receiving telescope system
Fig. 5. Range residual from Glonass128 satellite measured by 1.56 m telescope. (a) Range residual when using 10 MHz signal from the same source; (b) range residual when using 10 MHz signal from the different source; (c) range residual when using 10 MHz signal from the same source
Fig. 6. Range residual from Beidou IGSO5 (Compassi5) satellite measured by 1.56 m telescope
Fig. 7. Range errors from (a) Lageos2 and (b) Beidou IGSO3 satellites measured by 1.56 m telescope
Table 1. Specifications of 1.56 m and 60 cm optical telescopes
View tableTable 1. Specifications of 1.56 m and 60 cm optical telescopes
Item 1.56 m telescope 60 cm telescope Receiving telescope R-C system R-C system Tracking mount Equatorial Altazimuth Focus length /m 15.6 5.2 Diameter of secondary mirror /m 0.5 0.2 Efficiency of receiving optical system(@532 nm) /% 50 60 Efficiency of laser detector(@532 nm) /% C-SPAD,20 C-SPAD,20 FOV of detection /(″) 45 135 Tracking precision (RMS) /(″) 2 1 Timing system A033 event timer A033 event timer Time and frequency source End run Symmetricom @XLi Efficiency of laser transmitting system(@532 nm) /% none 65 Laser system(@1 kHz) /W none 1 Diameter of laser transmitting telescope /cm none 21 Divergence of laser signal /(″) none 8-10
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Haifeng Zhang, Huarong Deng, Mingliang Long, Zhien Cheng, Zhongping Zhang, Gang Zhao, Jialiang Wang. Time Synchronization in Laser Ranging with Multi-Receiving Telescopes Based on Fiber-Time-Frequency Transfer[J]. Laser & Optoelectronics Progress, 2019, 56(1): 011204
Paper Information
Category: Instrumentation, Measurement and Metrology
Received: Jun. 7, 2018
Accepted: Jul. 20, 2018
Published Online: Aug. 1, 2019
The Author Email: Haifeng Zhang (hfzhang@shao.ac.cn)
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