Hi Dave, Unfortunately, something like this is a bit heavy and complex to put in 400 gram rocket which has to cost less than $1k (preferably much less)!! It is an ingenious design, though! Sean On Wed, 13 Sep 2000, David VanHorn wrote: > The sidewinder seeker head is a pretty interesting design. > > The tip is a four quadrant photodiode, looking aft, at a rotating mirror. > The mirror is segmented. So, an IR source is modulated by the mirror > rotation. This also makes it easy to implement digital filtering, since the > rate of the chop is always absolutely known. > > There are several (three or four) sections to the mirror, outward from the > center, so that a target off to one side of the view produces a high tone, > and as it gets closer to the center, the tone steps lower. > > -- > Where's dave? http://www.findu.com/cgi-bin/find.cgi?kc6ete-9 > > -- > http://www.piclist.com hint: To leave the PICList > mailto:piclist-unsubscribe-request@mitvma.mit.edu > -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu