There are 3 poles on the left side of ascent module, and 2 poles on right side. It looks like spatial diversity antenna, or conical spiral logarithmic antenna the purpose may be used for positioning, eg, during rendezvous docking. The ascent module has to dock with orbiter very precisely, on the scale of centimeter, or millimeter. >>> RF ranging. Minmum 2 antenna rods needed for ranging. 3 rods can make 3 measurements same time, to increase accuracy. Upon successful capture of ascent module, the moon samples can then be transferred to re-entry capsule ( located inside the orbiter) or it is a periscope( backup periscope bck-4), as in soyuz spacecraft ? is it RF metrology antenna or FFRF (formation flying Radio Frequency) sensor in PRISMA from France , Swedish Space Corp or CNES? the main purpose is for automatic rendezvous of two spacecrafts If it is really a FFRF for rendezvous, why are they mounted on one side of spacecraft, rather than the "mat...