Is a system used to convert invisible infra-red into visible radiation. There is a passive IIS where in the energy emitted by the target is detected, processed and displayed.
Yinkqubo esetyenziswa ekuguquleni idangatye elibomvu elincinci elingabonakaliyo libe yimitha ephumayo ebonakalayo elidangatye elibomvu. Kukho ukungashukumi kwi-IIS apho kukutshwa khona amandla lixhoba elifunyenweyo, lalungelelaniswa laze ladandalaziswa.