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- Path: sparky!uunet!ogicse!uwm.edu!zaphod.mps.ohio-state.edu!darwin.sura.net!haven.umd.edu!mimsy!jpl-devvax.Jpl.Nasa.Gov
- From: leem@jpl-devvax.Jpl.Nasa.Gov (Lee Mellinger)
- Newsgroups: rec.guns
- Subject: Re: LASERs - rangefinders?
- Message-ID: <1992Nov16.181832.26818@jpl-devvax.jpl.nasa.gov>
- Date: 16 Nov 92 23:08:38 GMT
- Article-I.D.: jpl-devv.1992Nov16.181832.26818
- Sender: magnum@mimsy.umd.edu
- Organization: Jet Propulsion Laboratory (NASA)
- Lines: 37
- Approved: gun-control@cs.umd.edu
-
- In article <1992Nov13.013459.7257@ke4zv.uucp> ke4zv!gary@gatech.edu (Gary Coffman) writes:
- :In article <4181@bcstec.ca.boeing.com> kuryakin@bcstec.ca.boeing.com (Rick Pavek) writes:
- :#
- :#Speaking of LASER's, and laser sights for guns, does anyone know
- :#if there is a laser rangefinder produced commercially?
- :#
- :#How hard would it be to build one?
- :#
- :#Could the laser speed detectors that police are beginning to use be
- :#adapted?
- :
- :Let's examine how speed radars and rangefinders work. Speed detectors,
- :radar or laser, measure the frequency shift of the return signal caused
- :by the moving target generating a doppler shift.
- :
- :Gary
- :
- :
-
- Not exactly, police speed radar uses the Doppler principle, however
- police Laser speed detectors use muliple range finding technique to
- calculate the velocity. Distance to the target is taken at precisely
- known time intervals, the differential distance is divded by the time
- to give the speed. You probably could use one of these with
- modification to measure target distance, but you better have money to
- burn, I understand that these devices go for $3-$5k.
-
- Lee
-
-
- "Nothing blasts forever" -- Keats on ammo.
-
- "Mit Pulver und Blei, die Gedanken sind frei."
-
- |Lee F. Mellinger Caltech/Jet Propulsion Laboratory - NASA
- |4800 Oak Grove Drive, Pasadena, CA 91109 818/354-1163 FTS 792-1163
- |leem@jpl-devvax.JPL.NASA.GOV
-