Deep space Ka-band link management and Mars Reconnaissance Orbiter:: Long-term weather statistics versus forecasting

被引:29
|
作者
Davarian, F [1 ]
Shambayati, S [1 ]
Slobin, S [1 ]
机构
[1] CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA
关键词
atmospheric noise temperature forecasting; deep space link management; Ka-band link design; satellite communications; weather effects on radio signals;
D O I
10.1109/JPROC.2004.837613
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
During the last 40 years, deep space radio communication Systems have experienced a move toward shorter wavelengths. In the 1960s, a transition from L- to S-band occurred, which was followed by a transition from S- to X-band in the 1970s. Both these transitions provided deep space links with wider bandwidths and improved radio metrics capability. Now, in the 2000s, a new change is taking place: namely, a move to the Ka-band region of the radio frequency spectrum. Ka-band will soon replace X-band as the frequency of choice for deep space communications,. providing ample spectrum for the high data rate requirements of future missions. The-low-noise receivers of deep space networks have a great need for link management techniques that can mitigate weather effects. In this paper three approaches for managing Ka-band Earth-space links are investigated. The first approach uses aggregate annual statistics, the second one uses monthly statistics, and the third is based on the short-term forecasting of the local weather An example of weather forecasting for Ka-band link performance prediction is presented. Furthermore, spacecraft commanding schemes suitable for Ka-band link management are investigated. Theses schemes will be demonstrated using NASA's Mars Reconnaissance Orbiter spacecraft in the 2007-2008 period, and the demonstration findings will be reported in a future publication.
引用
收藏
页码:1879 / 1894
页数:16
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