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rations of this satellite, which in 2020 reached 15
years of nominal operational life.

Last year the PAZ observation satellite, which was
launched in February 2018 and whose operation is
also the responsibility of the company, had been
in orbit for two years. The mission controllers and
operations engineering teams have kept the satelli-
te fully operational with all its subsystems functio-
ning as designed, and have managed to maintain its
orbit within the strict control margin required.

To achieve this, 30 orbital control manoeuvres and
more than 300 schedules were carried out throu-
ghout 2020, making use of the almost 1,500 con-
tacts the satellite has had with the principal control
station in Torrejón and the new polar station in Sval-
bard (Norway). © Hisdesat

All the activities aimed at monitoring the health king (S3TOC). These activities have focussed on the
status of each of the PAZ satellite subsystems were development of operational procedures as well as
carried out in order to understand and predict beha- quality control of the orbital catalogue and the pro-
viours and ultimately to optimise their performance. ducts generated by the centre, taking advantage, on
the one hand, of Hisdesat’s experience as a control
Finally, Hisdesat’s operations department has also centre operator, and on the other, of its status as a
carried out activities related to Space Situational user of these services due to being the benchmark
Awareness (SSA) – the surveillance and monitoring national operator of multi-mission satellites.
of space objects – as part of the operations team at
the Spanish Centre for Space Surveillance and Trac- In summary, throughout 2020 Hisdesat has main-
tained and even increased its activity as a satellite
operator. It is one of the few international multi-plat-
© Hisdesat form and multi-mission satellite operators, with four
different control centres handling communications
satellites in geo-stationary orbit, observation satelli-
tes in low orbit, and the Spanish control centre for
the surveillance and monitoring of space objects.

32 | HISDESAT | INFORME ANUAL 2020