Title :
Low noise temperature measurement methods in radio astronomy
Author :
Chen, Yong ; Sun, Zheng-Wen ; Wang Xiao-Mei ; Wang Si-xiu
Author_Institution :
Nat. Astron. Obs., Chinese Acad. of Sci., Urumqi, China
Abstract :
Noise temperature of the receiver and low noise amplifier are become lower and lower with the fast development of electronic technique, it has become difficult to measure the noise temperature accurate and rapid. In this paper, various methods of noise temperature measurements in radio astronomy are described. The factors that influence the measurement precision also are discussed.
Keywords :
electric noise measurement; radioastronomy; radiofrequency interference; low noise amplifier; low noise temperature measurement; radio astronomy; Extraterrestrial measurements; HEMTs; Noise figure; Noise measurement; Power generation; Power measurement; Radio astronomy; Receivers; Signal to noise ratio; Temperature measurement; Noise temperature measurement; Y-factor; accuracy; hot and cold loads;
Conference_Titel :
Education Technology and Computer (ICETC), 2010 2nd International Conference on
Conference_Location :
Shanghai
Print_ISBN :
978-1-4244-6367-1
DOI :
10.1109/ICETC.2010.5529787
