Citation
Abstract
Radiometric microwave noise temperature measurements are used to estimate atmospheric transmission loss. It is common practice to use the following lumped element model expression for the noise temperature contribu tion, T" = I, (1- 1/L). This relationship is used to estimate the transmission loss L in terms of T" and the atmosphere effective physical temperature T,. This report evaluates f, in terms of assumed distributed loss and temperature models. Simplified expressions are presented for low loss applications. For these applications L is determined directly and accurately without integration or iteration.
Details
- Volume
- 42-63
- Published
- June 15, 1981
- Pages
- 87–96
- File Size
- 405.4 KB