Articles | Volume 18, issue 21
https://doi.org/10.5194/amt-18-5895-2025
https://doi.org/10.5194/amt-18-5895-2025
Research article
 | 
30 Oct 2025
Research article |  | 30 Oct 2025

Multipurpose incoherent scatter measurement and data analysis techniques for EISCAT3D

Ilkka I. Virtanen, Ayanew Nigusie, Antti Kero, Neethal Thomas, and Juhana Lankinen

Model code and software

Lag Profile Inversion (v0.4.0) Ilkka I. Virtanen https://doi.org/10.5281/zenodo.6405720

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Short summary
EISCAT3D is an ionospheric radar currently under construction in Northern Fenno-Scandinavia. The radar will make 3D measurements of the ionosphere at 50–1000 km altitudes. We show that the so-called multipurpose radar modulations and optimal data analysis can improve the time resolution of the measurements by more than an order of magnitude, and they enable one to measure ion-neutral collision frequencies, which are proportional to neutral particle density, in the lower ionosphere.
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