Menetelmä sähkömagneettisen säteilyn avulla muodostetun referenssitason ilmaisemiseksi ja sovitelma säteilyn vastaanottimessa

摘要

A process for detecting a reference level formed with an electromagnetic ray and an arrangement for receiving the radiation. In the process, the measuring surface of the receiver is divided in its peripheral direction into equal-width measuring zones a-d, in each of which there are an equal number of receiving elements 13 placed in the same pattern. The radiation detected by the receiving elements 13 in each measuring zone a-d is measured separately. The measuring surface of the receiver in its peripheral direction has been divided into equal-width measuring zones a-d having an equal number of receiving elements 13 placed in the same pattern. <IMAGE>