天线温度[Antenna Temperature] - 达人(其实～我是卧底，来自外星)

2005/11/07 | 天线温度[Antenna Temperature]
类别(Ω〖物理〗) | 评论(0) | 阅读(32) | 发表于 22:27: The equivalent temperature of the power received at an antenna from a source according to
(1)

(2)

In terms of measured antenna parameters,
(3)

where is the aperture efficiency, G is the antenna gain, and is the measured flux density. can be computed from the Planck law,
(4)

In the Rayleigh-Jeans limit, this becomes
(5)

Antenna temperature then satisfies
(6)

so
(7); 0