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IEEE International Workshop Metrology for AeroSpace Time's Up

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Session 1

Precise Time Scales and Navigation Systems


Patrizia TavellaPatrizia Tavella

INRIM, Italy

The IEEE Distinguished Lecturer program




Today, atomic clocks enable precision estimates of time and position.
Through the use of ultra precise atomic frequency standards, we can form time scales, such as the international time standard Universal Coordinated Time (UTC), capable of dating events with nanosecond accuracy.
Similarly, Global Navigation Satellite Systems (GNSS), provide location all over the world with sub-meter accuracy.
In timekeeping, as well as in navigation systems, the questions may be similar, but the answers are frequently dissimilar, due to different goals, requirements, technology availability and constraints.
In both cases precision clocks, measuring systems, and a reference time scale are required; in both cases we need to estimate how often the clocks are to be
resynchronized and what is the acceptable time error that a clock may accumulate without compromising system performance.
We require a mathematical model to predict clock behavior in order to maintain agreement with another reference clock or to ensure updated navigation messages. We
need to understand the “normal” behavior of a clock to be able to quickly identify anomalies which can lead to incorrect estimates.
The lecture presents the needs of precise Timing and Navigation, explaining the current international timekeeping architectures and the timing systems of the current GNSS, giving insight to the most demanding topics that still challenge Time Metrology.


Session 2

RADAR role: from the underground to the outer space


farina1Alfonso Farina






The tutorial will develops along the following topics:

  • Hubble space-telescope & Universe
  • Mimiking nature
  • Beginning of radar
  • Galois & Cardano and the radar waveforms
  • Radar applications
  • Radar working principles
  • Radar technologies
  • From underground to deep space
  • Phased array radar: coca-cola can
  • Conclusions


Session 3

Measurement for Planetary Exploration: Mars and Exomars


debei1Stefano Debei

University of Padova, Italy





The tutorial will develops along the following topics:

  • Solar System and Celestial bodies
  • Life and life signature searching
  • Earth – Mars comparison
  • Mars... dead or alive?
  • Mars... live planet!
  • Mars and its morphology
  • Mars: searching for water
  • Mars exploration
  • Exomars 2016 and 2020