powerpoint presentation · • a small mobile transmitter/receiver system to ... • magnetospheric...
TRANSCRIPT
The first step towards the realisation of the new EISCAT_3D research radar system:
Two VHF receiver sites and a mobile, low altitude radar facility
Asta Pellinen-Wannberg, UmU and IRF-KirunaLars Blomberg, KTH
Stephan Buchert, IRF-UppsalaJörg Gumbel, SU
Gudmund Wannberg, IRF-Kiruna
many other present and potential new users and contributors
This proposal covers four science/technology items
• Atmospheric physics – both upper and tropo/stratosphere
• Auroral geospace physics• Solar system dust physics• Innovative radar technology
The Swedish infrastructure proposed here comprises an EISCAT_ 3D subsystem:
• Two VHF (230-MHz) receiver arrays for multi- static observations in the (60 – 200) km altitude range
• the upper part of the mesosphere and • the ionospheric D, E and F1 regions
• Receivers and signal-processing and data communications equipment for the above
• A small mobile transmitter/receiver system to provide test signals during the construction and commissioning of the main arrays. This will later be used in multiple applications
• Stand-alone troposphere/stratosphere radar,• Illuminator for the main arrays for bistatic stratosphere work, and • Outlier receiving array for interferometric studies of small scale
auroral structures
The Atmosphere
ozonelayer
waveswinds
100
80
60
40
20
0
n o c tilu cen t c lo u ds
tropopause
stratopause
mesosphere
stratosphere
troposphere
altit
ude
(km
)
1 00 3 00temperature (K)
waves
winds
stratospheric clouds
mountain leewaves
magneticfield
mesopause
6 00
aurora
air - Earth current
PMSE
What is the difference? – example PMSE at EISCAT VHF and PFISR:
EISCAT_3D: better frequency for PMSE studies than PFISR; multistatic – 3D drifts and can look simultaneously from different angles
Nicolls et al., 2007
EISCAT interest in Sweden, ~2005-present:
• IRF-Kiruna ~ 15; upper atmosphere, auroral geospace, induced space plasma, solar system dust, technology innovation, coding technics, computation
• IRF-Uppsala ~ 10; auroral geospace, induced space plasma, technology innovation
• SU ~ 5; upper atmosphere• KTH ~ 5; auroral geospace• UmU ~ 10; solar system dust, auroral geospace,
computation• LTU ~ 5; technology innovation
Additional potential interest in Sweden:
• Tropo/stratosphere, climate• Astronomy, VLBI, IPS, comets, asteroids,
interstellar dust• Plasma physics• Magnetospheric radar together with Lofar/LOIS• Planetary, moon, NEO, space debris, space
weather, TEC; operative collaboration with ESA• Technology innovation, coding technics, data
processing and computation• Something for most universities in Sweden• Interaction with industry• New discoveries...