The tracking system for the PAMELA spectrometer is actually under construct
ion using double-sided double metal AC coupled microstrip,silicon sensors.
To study the performances of the silicon detectors and of the readout elect
ronics several tests have been performed, using minimum ionizing particles.
The characteristics of the detectors are described and the main results ob
tained from the July '97 test-beam are presented, with particular reference
to the spatial resolution.