... we need that the antenna beam is perpendicular to the magnetic field, that is, the reflectrion power has a strong aspect ... For the Irkutsk IS radar these conditions are satisfied in a sufficient larch region 400-1100 km to the north from Irkutsk. ...
... The radar facility is located 12O km north-westward of Irkutsk (53 N, 1O3 E). ... Primary data are written on flexible or hard magnetic disks. ... Regular observations are carried out in the north-east area of . Russia. ...