摘要高功率, 窄线宽589 nm 激光可激发海拔约90 km 处厚度约10 km 的钠层原子并产生后向
散射荧光. 基于589 nm 激光的钠导引星是地基光学望远镜自适应光学系统的理想信标光 …

Currently, most Landsat satellites are deployed in the low earth orbit (LEO) to obtain high-
resolution data of the Earth surface and atmosphere. However, the return channels of LEO …

Broadband internet access has become a vertex for the future development of society and
industry in the digital era. Geostationary orbit (GEO) satellite can provide global broadband …

Future spacecraft will require a paradigm shift in the way information is transmitted, in light of
the continuous increase in the amount of data requiring space links. Current radio-frequency …

Optical technologies are extremely competitive candidates to achieve very-high throughput
links between ground and GEO satellites; however, their feasibility relies on the ability to …

Atmospheric turbulence causes refractive index fluctuations, which in turn introduce extra
distortions to the wavefront of the propagated radiation. It ultimately degrades telescope …

Future spacecraft will require a paradigm shift in the way the information is transmitted due
to the continuous increase in the amount of data requiring space links. Current …

Geostationary communication satellites can effectively cover gaps in internet-connectivity of
European households that cannot be reached by terrestrial technology. However, these …

To overcome data rate limitations of RF communication links with satellites, TNO and DLR
envision optical free-space communication feeder links for next generation high throughput …

Optical feeders for geostationary High Throughput Satellites (HTS) systems based on 1.55
μm wavelength technology are expected to enable to transmit up to several terabits over one …