In order to enable an iCal export link, your account needs to have an API key created. This key enables other applications to access data from within Indico even when you are neither using nor logged into the Indico system yourself with the link provided. Once created, you can manage your key at any time by going to 'My Profile' and looking under the tab entitled 'HTTP API'. Further information about HTTP API keys can be found in the Indico documentation.
Additionally to having an API key associated with your account, exporting private event information requires the usage of a persistent signature. This enables API URLs which do not expire after a few minutes so while the setting is active, anyone in possession of the link provided can access the information. Due to this, it is extremely important that you keep these links private and for your use only. If you think someone else may have acquired access to a link using this key in the future, you must immediately create a new key pair on the 'My Profile' page under the 'HTTP API' and update the iCalendar links afterwards.
Permanent link for public information only:
Permanent link for all public and protected information:
The first technology developments for optical satellite communication systems, which started in Europe more than 30 years ago, were based on CO2 laser systems. However, CO2 laser technology is not useful in space and when reliable laser-diodes became available ESA developed SILEX (the world-first optical inter-satellite communication link experiment) a data relay link between an Earth observation satellite (SPOT-4) and a geostationary satellite (ARTEMIS). Since it’s commissioning in 2001, the date relay system has been used extensively, also by external customers such as the Japanese OICETS satellite and by LOLA, a French aircraft to ARTEMIS communication experiment. However SILEX, being the first technology demonstration, was not able to compete with RF technology in terms of mass and data rate and a second generation of laser communication technology has been developed by the German Space Agency (DLR). The mass of the new optical terminals has been decreased from 160kg to 35kg and data rates increased from 50Mbps to 5600Mbps. Two such terminals have been launched on the TerraSAR-X and NFIRE satellites in 2007 into low Earth orbit and demonstrated over link distances up to 6000km. The next evolution of these terminals has an extended range of up to 45000km and will be used for the new European Data Relay System (EDRS) first serving the Sentinel satellites of the European Copernicus initiative. In addition laser communication experiments have been performed in 2013 with NASA's LADEE satellite from lunar orbit and with the OPALS terminal from the ISS in 2014. The paper will give an overview of all past and future laser communication activities to be performed in Europe.