>> http://www.pyroelectro.com/projects/ir_radar/index.html

> Infrared distance sensor, no "radar" at all.  :(

____________

The implicit meaning of xxDAR is that the system uses time 
of flight measurement, which this doesn't. One can argue 
that everything and anything else is worthy of the name, but 
it wasn't originally how the name was understood. eg LIDAR 
IS light radar.

A (very) major limitation of systems like this is that they 
depend mainly on light amplitude return.
The sensors are DESIGNED for use with a mirror reflector and 
anything else is liable to produce unpredictable results.

For a constant albedo and reflectivity target you may get 
some accuracy. For areas with eg soft-furniture, painted 
walls, a glass screen TV and a cat the results are liable to 
be "confused".

Some useful links below.


            Russell

The design operating distance for the detectors is modest. 
eg 4 to 30cm for the GP2D120

The GP2D12 is a (n arguably) more useful 10 - 80 centimetres

Superb min/max range comparison chart

        http://www.acroname.com/robotics/parts/sharp_guide.pdf


Application article

        http://www.kronosrobotics.com/an120/DAN120.shtml




GP2D120 datasheet

        This one has some useful notes. Not the world's best 
translation
        but understandable enough.
        http://www.acroname.com/robotics/parts/GP2D120_SS.pdf

        http://www.farnell.com/datasheets/38197.pdf
        http://www.dorukan.com/files/GP2D120-DATA-SHEET.pdf

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