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unknown points in point cloud captured by swissranger 4k

Hi,

Using the swissranger_camera node connecting through ethernet (running linux using ros- diamondback), I consistently see points along the edges of the field of vision of the swissranger when there are no obstacles in the way(see the following link to a picture of this) The points near the vertex of the cone by the sensor have an evident abundance of these points from an unknown source. The sensor has ~5m range and this weird noise we see is <~2m in front of the sensor where it is in a obstacle-free environment. Are there any suggestions to what is causing this problem and any solutions to this?

http://i54.tinypic.com/111qyqu.png