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Fig. 1 | Earth, Planets and Space

Fig. 1

From: Tristatic observation of polar mesosphere winter echoes with the EISCAT VHF radar on 8 January 2014: a case study

Fig. 1

Sketch of the experiment geometry in the vertical plane between Tromsø-Kiruna (not to scale). Transmitting vertically at TRO and receiving at KIR site. KIR receiver is pointed to 75 km over TRO and samples scattered signal in 53 range gates (travel times) with 2.4 μs separation. The travel paths (times) P1, P2 and P indicating the lower and upper boundaries and the middle, respectively, for the central gate 27 are marked in red. The positions of the scatterers, which contribute to the signal at gate 27, are marked in blue. See the text for more information

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