ISO/TC 211 Multi-Lingual Glossary of Terms (MLGT)

Note to entry: For microwave radiometer, SRF refers to the receiver's band-pass, ${\displaystyle B\left(\nu \right)}$ , which can be determined by performing two measurements per frequency at different input power levels, as shown in the following formula: ${\displaystyle B\left(\nu \right)=\frac{\Delta V_{\text{out}}\left(\nu \right)}{\Delta P_{\text{in}}\left(\nu \right)}}$ where ${\displaystyle \Delta V_{\text{out}}}$ is the output voltage difference; ${\displaystyle \Delta P_{\text{in}}}$ is the input power difference; ${\displaystyle \nu }$ is the frequency in Hz