| Author(s): |
Ronald C. Wittmann; Amanda Cox; Randy Direen; |
| Title: |
Proximity effects in the calibration of microwave radiometers |
| Published: |
October 01, 2005 |
| Abstract: |
Microwave, total-power radiometers are calibrated by observing sources of known brightness temperature. Free-space calibrations are usually performed assuming far-field interactions, although the actual calibration source may be well into the near-field region of the radiometer antenna. Here, we simulate the free-space coupling between radiometer and calibration target to explore the potential contribution of proximity effects to measurement uncertainty. |
| Conference: |
Antenna Measurement Techniques Association |
| Proceedings: |
Proc., Antenna Meas. Tech. Asoc. Symp. |
| Pages: |
pp. 333 - 336 |
| Location: |
Newport, RI |
| Dates: |
October 30-November 4, 2005 |
| Keywords: |
calibration;microwave;near-field gain;radiometer;remote sensing;uncertainty analysis |
| Research Areas: |
Electromagnetics |
