Haitao Li. Technical approach analysis and development prospects of optical communication technology in China Deep Space TT&C Network(Invited)[J]. Infrared and Laser Engineering, 2020, 49(5): 20201003
- Infrared and Laser Engineering
- Vol. 49, Issue 5, 20201003 (2020)
![Coverage of spacecraft at different orbital altitudes by NASA's Deep Space Network[4]](/richHtml/irla/2020/49/5/20201003/img_1.jpg)
Fig. 1. Coverage of spacecraft at different orbital altitudes by NASA's Deep Space Network[4]
![Coverage of China Deep Space TT&C Network at 10° elevation[6]](/richHtml/irla/2020/49/5/20201003/img_2.jpg)
Fig. 2. Coverage of China Deep Space TT&C Network at 10° elevation[6]
![Schematic diagram of 4×35 m antenna array of China Kashi deep space station[6]](/Images/icon/loading.gif){kind=icon}
Fig. 3. Schematic diagram of 4×35 m antenna array of China Kashi deep space station[6]
Fig. 4. Required for data transmission rate in deep space exploration missions[13]
Fig. 5. Profile of NASA deep space communications capability[16]（At Jupiter）
Fig. 6. Technical approaches adopted by NASA DSN in the future to improve the data reception rate and the expected effect of improved data transmission capacity[17]
Fig. 7. Comparison of radio frequency beam and RF beam divergence from Mars toward Earth[18]
Fig. 8. Block diagram of the deep space laser communication link[21]
Fig. 9. Average global afternoon cloud cover measured daily by the Aqua satellite between 2002 and 2015[22]
Fig. 10. Regional distribution of global tropical desert climate
Fig. 11. Example of multi-site optical network designed for mitigation of weather-induced outages[21]
Fig. 12. Comparison of a single 12 m diameter segmented primary telescope conceptual design (right) and an array of 2.2 m diameter telescopes for an equivalent effective diameter[19]
Fig. 14. NASA "integrated" GEO relay concept[26]
Fig. 15. NASA super-geosynchronous geostationary relay concept[27]
Fig. 16. NASA SCaN enhanced deep space domain capabilities[28]
Fig. 17. Schematic diagram of NASA space communications cognitive network[29]
Fig. 18. Schematic diagram of 35 m deep space RF/optical hybrid system[6]
Fig. 19. Distribution of potential deep space optical communication ground sites
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Table 1. Frequency band allocation for deep space TT&C
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