Newsgroups: comp.robotics
Path: brunix!uunet!spool.mu.edu!sol.ctr.columbia.edu!destroyer!fmsrl7!lynx!unmvax!intvax!drstrip
From: drstrip@isrc.sandia.gov (David R. Strip)
Subject: Re: Laser Range Finder
Message-ID: <1992Sep18.230835.26186@isrc.sandia.gov>
Organization: Sandia National Labs, Org. 1600, Albq., NM
References: <BuqC68.EFz@snuffy.wa.atk.com>
Date: Fri, 18 Sep 1992 23:08:35 GMT
Lines: 19

From article <BuqC68.EFz@snuffy.wa.atk.com>, by mtarrant@snuffy.wa.atk.com (Mike Tarrant):
> In article <lbg6j0INN6m8@exodus.Eng.Sun.COM> cmcmanis@pepper.Eng.Sun.COM (Chuck McManis) writes:
> I'm interested in using a linear array of ultrasonic transducers and 
> beamformingto steer the beams.  I can find references on underwater 
> sonar applications, but none for mobile robotics.  Any ideas?

Mary Moya did just this sort of thing a few years back when she was working
in the Sandia Robotics Department. This is a bit outside my field, but I
recall there are substantial problems stemming from the relationship between
radiator spacing and wavelength. (ie, you can't form a very tight beam).
You might try asking her. (not sure if she's on the net, but you can write
her at Dept 9133, Sandia National Labs, PO Box 5800, Albq. NM. 87185-5800
505-844-7031.

David Strip


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