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Table 1 Experiment parameters (only used in the calculations) and radar parameters

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

  Tromsø Kiruna Sodankylä
Geographic coordinates 69°35′N 19°14′E 67°52′N 20°26′E 67°22′N 26°38′E
Frequency 224.4 MHz   
Peak power 1.5 MW   
Half-power beam width 1 × 2.4° × 1.7° Tx
2 × 2.4° × 1.7° Rx
1.2° 1.2°
Azimuth   346.3° 312.7°
Elevation 90° 19.6°
Bragg scale 0.67 m 0.82 m 0.88 m
Pointing height   75 km 75 km
Number of range gates 250 (for D region) 53 53
Altitude resolution Δh 360 m 540 m 590 m
Minimum height (Hmin) 19 km 61 km 59.4 km
Maximum height (Hmax) 109 km 89 km 91 km