Results 201 to 210 of about 9,722 (253)
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Optical inter-satellite and feeder links
2017 IEEE International Conference on Space Optical Systems and Applications (ICSOS), 2017Big data is shaping today's live in many aspects, terrestrial as well as celestial. High data rates are essential for Earth Observation satellites and pre-requisite for High Throughput Satellites and Constellations with broadband data services. Optical communication offers high capacity data transmission for satellites and is available and already ...
Daniel Troendle +7 more
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Distance estimation in OFDM inter-satellite links
Measurement, 2020Abstract One of the practical solutions for space deployment of large-scale scientific instruments is satellite formation flying. In this type of space mission, several smaller satellites have the ability to interact and cooperate with each other via inter-satellite links (ISL) for tasks commonly performed by a larger and more complex satellite ...
Alexandru Mihai Crisan +3 more
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Inter-satellite links for satellite autonomous integrity monitoring
Advances in Space Research, 2011Abstract A new integrity monitoring mechanisms to be implemented on-board on a GNSS taking advantage of inter-satellite links has been introduced. This is based on accurate range and Doppler measurements not affected neither by atmospheric delays nor ground local degradation (multipath and interference). By a linear combination of the Inter-Satellite
Rodríguez Perez I. +6 more
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2018 13th World Congress on Intelligent Control and Automation (WCICA), 2018
The ability of autonomous navigation is one of the key features supporting autonomous operation of the satellite constellation. Based on inter-satellite link ranging, the increase of direction observation can obtain the indirect measurements of orbital plane orientation parameters, which determine the absolute direction of the constellation in inertial
Wenbo Yang +3 more
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The ability of autonomous navigation is one of the key features supporting autonomous operation of the satellite constellation. Based on inter-satellite link ranging, the increase of direction observation can obtain the indirect measurements of orbital plane orientation parameters, which determine the absolute direction of the constellation in inertial
Wenbo Yang +3 more
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Study of Optical Amplifiers for Inter-satellite Links
21st International Communications Satellite Systems Conference and Exhibit, 2003global multimedia mobile satellite communications service with a user data rate around 2 Mbps for handy terminals. The target year for commercial implementation is 2010. Nextgeneration LEO System Research Center (NeLS) was formed in the end of 1997 as a research group under the Telecommunications Advancement Organization of Japan (TAO), in cooperation ...
Yoshisada Koyama +3 more
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The optics mechanical module for inter-satellite link
SPIE Proceedings, 2016Inter-satellite link (ISL) is a system of several satellites, which encircle the earth and spaced at a fixed distance from each other - of about 3000 kilometers. The optical-mechanical module (MOM) for the ISL is designed to transmit data over long distances in a small range of angles.
E. A. Tsyganok, B. N. Dobriakov
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Study on Quantum Inter-satellite Link Technology
2015It is a very important way to realize the satellite data injection, control and autonomous navigation through inter satellite link to communicate and range. Quantum technology has special advantages in realizing the secure communication, and has been gradually tested and applied.
Xian’an Zheng +3 more
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Phased-array antennas for inter-satellite links
2010 Australian Communications Theory Workshop (AusCTW), 2010Antennas are key components of inter-satellite links (ISLs). To achieve the necessary antenna gains with modest physical size, directional Ka or V Band antennas are required that may be steered throughout the duration of the ISL. This paper considers options for ISL antennas on low-earth orbit satellites that avoid any mechanical steering.
William G. Cowley, Harry E. Green
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Inter-satellite laser link simulation analysis
SPIE Proceedings, 2015The characteristic of satellite communication link was firstly described and four application modes were put forward. By comparison, it is suggested that microwave link is used in satellite-to-ground communication and laser link is used in inter-satellite communication. Secondly the condition and composition of laser link establishment was analyzed and
Lanjuan Tong, Hui Guan, Zhilin Wang
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Satellite Navigation Inter-satellite Link Technology
2020Inter-satellite link (or Crosslink) refers to the link between satellites, or the link between spacecraft in a more generalized sense. Its main functions include inter-satellite communication, data transmission, inter-satellite ranging, and inter-satellite TT&C.
Jun Xie +3 more
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