The properties of a sensor noise model. The type of noise. Currently supported types are: "none" (no noise). "gaussian" (draw noise values independently for each measurement from a Gaussian distribution). "gaussian_quantized" ("gaussian" plus quantization of outputs (ie. rounding)) For type "gaussian*", the mean of the Gaussian distribution from which noise values are drawn. For type "gaussian*", the standard deviation of the Gaussian distribution from which noise values are drawn. For type "gaussian*", the mean of the Gaussian distribution from which bias values are drawn. For type "gaussian*", the standard deviation of the Gaussian distribution from which bias values are drawn. For type "gaussian_quantized", the precision of output signals. A value of zero implies infinite precision / no quantization.