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Why does SICK LMS200 not work with angle = 180 and resolution = 0.25

asked 2014-07-23 16:54:33 -0500

Ashesh Goswami gravatar image

Hi all, I have been trying to perform some laser scanning using LMS200. I am using the sicktoolbox wrapper and setting

rosparam set sicklms/angle 180
rosparam set sicklms/resolution 0.25

But everytime it throws me a warning saying "Unable to set resolution. Using 5.000000e-01 instead of 2.500000e-01" and finally settles with resolution 1.0. However, if I give the combination as (100,0.25) instead of (180,0.25), it works fine and I get the desired resolution. Can anyone throw any light on this strange behavior? Thanks in advance

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answered 2015-01-01 21:09:05 -0500

tfoote gravatar image

I believe that the SICK cannot do it's highest resolution at full width of range. It is bandwidth limited in the amount of samples it can take and report.

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Yup, see Table 5-1 on page 11 of the manual. Its max scanning angle is limited to 100 degrees when using an angular resolution of 0.25 degrees.

Angus gravatar image Angus  ( 2015-01-02 15:41:37 -0500 )edit

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Asked: 2014-07-23 16:54:33 -0500

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Last updated: Jan 01 '15