I m not sure they needs or not range finder. If I understand truly, 2 thing very interesting about Togan system . First it is not standard ammunition , it is a module connected to 81 mm mortar ammunition so modified 81 mm ammunition we have. Not basic mortar ammunition like Ukraine used. (acc. to open sources) with aid of this module it has ability of two dimensional guidance a kind of very very basic HGK (my thought). Second interesting thing it has real time updated DTED ( Digital Terrain Elevation Data) on carrier platform so they know platform speed, terrain data of target. I think with the aid of this combination togan ammunition can engage target when platform/plane/UCAV at relatively high speed (I really curious about it can make some mid course correction or not) so it differs from basic drones. It also (it is just my speculation) can be / may be engage high speed targets like car, or sea platform which not make evasive maneuvering if they know the target speed in a route. Probably it will not be too successful but worth to try in case of emergency.
TOGAN Havadan Bırakılan Güdümsüz/Düşük Profil Güdümlü Mühimmat
www.millisavunma.com
GUIDANCE
2D guidance capability mounted on 81 mm ball mortar
Compatible with 81mm mortars in inventory