天線口面的平均亮溫度
AVERAGE BRIGHTNESS TEMPERATURE OF ANTENNA APERTURE
-
摘要: 本文提出了天線口面平均亮度的概念,給出了天線終端接有匹配噪聲源和非匹配噪聲源時(shí)天線口面平均亮溫度的表達(dá)式。該式表明,無耗天線口面的平均亮溫度僅與三個(gè)因素有關(guān):噪聲源的噪聲溫度,噪聲源的反射系數(shù)和天線的面積利用系數(shù)。
-
關(guān)鍵詞:
- 天線口面; 亮溫度; 噪聲溫度; 反射系數(shù); 面積利用系數(shù)
Abstract: This paper presents an idea for the average brightness temperature of antenna aperture and its expression for a lossless antenna with matched and unmatched noise sources. The expressions show that the average brightness temperature of antenna aperture relates with three factors: coefficient of useful area for antenna, noise temperature of noise sources and reflective coefficient of noise sources. -
Wismer K L, Witsmeer A J. A Terminal guidance simulator for evaluation of millimeter wave seekers. Proc. Millitary Microwaves Conference MM-80. London: Oct. 1980, 655-661.[2]李宗謙,王家璋.研究物體微波發(fā)射特性的低溫輻射背景實(shí)驗(yàn)室.第一屆全國電磁兼容學(xué)術(shù)會(huì)議論文集,深圳:1988, 210-212.[3]Sholes W J, Wilsdorf T T. Reflective chamber for hardware-in-the-loop simulation of active/passive[4]millimeter wave sensors, SCSC90, Calgary, Alberta, Canada: 1990, 987-992.[5]Ulaby Fawwaz Addison-Wesley T, Moore Richard K, Fung Alrian K. Microwave Remote Sensing, vol.l, London:[6]Publishing Company, 1981, Chapter 4.[7]Balanis A. Antenna Theory, Analysis and Design. London: Harpen Row Publishes, Inc. 1982,[8]-63. -
計(jì)量
- 文章訪問數(shù): 2377
- HTML全文瀏覽量: 175
- PDF下載量: 481
- 被引次數(shù): 0
下載:
