Terra-mapping, Aero-triangular signals, Lapland

Control System Int. was assigned by the Terra-mapping Group to sight Aero-triangular signals.

In a very short time during the polar spring (before the signals are covered by grown bushes) it was necessary to pinpoint more than 150 signals – squares 180x180 cm with reflective tags in corners. Locations for its positions had defined radius from 10-100 of meters. The measured area skirted through the mountain range along the Swedish and Norwegian borders from Ostersund all the way up to the polar circle region of Jokmok.