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Chinese Academy of Sciences completes Earth-Moon laser communication test
Researchers from the Chinese Academy of Sciences have successfully completed a two-way high-speed laser communication link test between Earth and the Moon. Spanning a distance of over 400,000 kilometers, the experiment marks a significant transition from near-Earth orbit to deep-space optical communication.
The test achieved a downlink transmission speed of 100 Mbit/s and an uplink speed of 1.25 Mbit/s. This technology offers advantages over traditional microwave communication, including higher bandwidth, faster speeds, enhanced security, and more compact hardware.
To overcome the challenges of extreme distance, the team addressed issues such as beam alignment, signal attenuation, and atmospheric interference. They developed a specialized acquisition and tracking scheme to correct for orbital and optical propagation delays, and utilized high-sensitivity superconducting single-photon detection to filter signals from background noise. This breakthrough is expected to support future lunar research stations, crewed lunar missions, and deep-space exploration.
Entities
Chinese Academy of Sciences · Earth · Moon · Space Application Engineering and Technology Center · Technology and Engineering Center for Space Utilization · Yang Lei · Zhejiang Lab
Claims
What the coverage asserts, and how many sources carry each claim.
- [● 4 SOURCES] The downlink transmission speed reached 100 Mbit/s. ordu.az · www.chinesepress.com · az.trend.az · time.news
- [● 4 SOURCES] The uplink transmission speed reached 1.25 Mbit/s. ordu.az · www.chinesepress.com · az.trend.az · time.news
- [● 5 SOURCES] The communication link spans a distance exceeding 400,000 kilometers. ordu.az · www.chinesepress.com · az.trend.az · revistaforum.com.br · time.news
- [● 5 SOURCES] The Chinese Academy of Sciences completed an Earth-Moon two-way laser communication link test. ordu.az · www.chinesepress.com · az.trend.az · revistaforum.com.br · time.news
- [● 4 SOURCES] The experiment required overcoming challenges in beam alignment, signal attenuation, and transmission speed. ordu.az · www.chinesepress.com · az.trend.az · time.news
- [● 3 SOURCES] The technology is intended to support future lunar research stations and crewed lunar missions. www.chinesepress.com · revistaforum.com.br · time.news
- [● 2 SOURCES] Researchers used high-sensitivity superconducting single-photon detection technology to filter signals from background noise. www.chinesepress.com · az.trend.az
- [● 4 SOURCES] The team developed a specialized acquisition and tracking scheme to correct for orbital, atmospheric, and optical propagation delays. www.chinesepress.com · az.trend.az · time.news · ordu.az