Radiometer design analysis based upon measurement uncertainty
Article first published online: 17 SEP 2005
Copyright 2005 by the American Geophysical Union.
Volume 40, Issue 5, October 2005
How to Cite
2005), Radiometer design analysis based upon measurement uncertainty, Radio Sci., 40, RS5004, doi:10.1029/2004RS003132., and (
- Issue published online: 17 SEP 2005
- Article first published online: 17 SEP 2005
- Manuscript Accepted: 25 MAY 2005
- Manuscript Revised: 10 SEP 2004
- Manuscript Received: 25 JUL 2004
- microwave radiometer calibration;
- radiometer design;
- measurement uncertainty analysis;
- least squares regression
 This paper introduces a method for predicting the performance of a radiometer design based on calculating the measurement uncertainty. The variety in radiometer designs and the demand for improved radiometric measurements justify the need for a more general and comprehensive method to assess system performance. Radiometric resolution, or sensitivity, is a figure of merit that has been commonly used to characterize the performance of a radiometer. However, when evaluating the performance of a calibration design for a radiometer, the use of radiometric resolution has limited application. These limitations are overcome by considering instead the measurement uncertainty. A method for calculating measurement uncertainty for a generic radiometer design including its calibration algorithm is presented. The result is a generalized technique by which system calibration architectures and design parameters can be studied to optimize instrument performance for given requirements and constraints. Example applications demonstrate the utility of using measurement uncertainty as a figure of merit.