LCTs 6 Years Operations: More Than 25.000 Successful Optical Links

Pimentel, Patricia Martin; Saucke, Karen; Hoepcke, Nils; Hasler, David; Mahn, R.; Sánchez-Tercero, Alicia; Marynowsli, Thomas; Heine, F.

doi:10.1109/icsos45490.2019.8978990

Cited by 1 publication

(1 citation statement)

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“…This represents 1541 commanded SGLs in total with automated telemetry recording at TDP1-LCT, and of this 630 links successfully executed with the T-AOGS and the corresponding telemetry recording: this amount of data cannot be analysed manually and link per link. For the LCTs in orbit 8 TESAT has set up an automated analysis tool 6 , the long term and performance analysis tool LTPA. This is also used for the TDP1-LCT, but only based on 1 Hz telemetry data.…”

Section: Automated Processing Of Datamentioning

confidence: 99%

Characterisation of the optical channel GEO to ground: using five years of data from Alphasat TDP1 and T-AOGS for investigation of different conditions

Saucke

Woicke

Mahn

et al. 2021

International Conference on Space Optics — ICSO 2020

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An important step towards reliable optical communication between ground and space is the characterization and understanding of atmospheric conditions -even when being at one place and performing links into one direction, but at different times. Within this paper the analysis of five years of optical links from a laser terminal on a geostationary satellite (TDP1-LCT on Alphasat) to ground (T-AOGS at Tenerife) is shown. The data, in total 40.2 h of reliable measurements extracted from 516 performed links, are spread over several times of the year and almost all times of day. For one of the main parameters describing the atmosphere (the Fried Parameter r0) a clear characteristic over the day is validated. For the up-link the influence of different transmitted beam divergence angles on the link budget in terms of mean power and fade statistic is shown. A short outlook on upcoming changes within the TDP-1 software and the T-AOGS functionality is given.

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Section: Automated Processing Of Datamentioning

confidence: 99%