电波科学学报2012，Vol.27Issue(5)：985-989,1018,6.
长基线天线组阵及其在深空遥测中的应用
Long baseline antenna arraying and its applications to telemetry in deep space explorations
摘要
Abstract
The antenna arraying technique can be used to receive weak signals of deep space probes and improve the link budget. In the paper,a signal combining experiment of long baseline antenna arraying is carried out to receive the telemetry signal of relative low code rate. Combined with a telemetric software baseband receiver,the antenna arraying processing platform is conducted to deal with the signals and analyze the results. Meanwhile, three basic signal combining techniques called full spectrum combining, baseband combining and symbol stream combining are investigated in details. The field data collected by Chinese VLBI network for the Chang'E 2 satellite is processed and analyzed to evaluate the performances of three signal combining techniques. The results indicate that the efficiency calculated by the symbol signal-to-noise ratio exceeds 90% if ignoring the degradation of 1-bit quantification. The applicability of the long baseline antenna arraying is sufficiently confirmed. It provides an effective approach of deep space communications for the future missions.关键词
天线组阵/遥测/相关/信号合成Key words
antenna arraying/telemetry/correlation/signal combining分类
信息技术与安全科学引用本文复制引用
舒逢春,江悟,张秀忠..长基线天线组阵及其在深空遥测中的应用[J].电波科学学报,2012,27(5):985-989,1018,6.基金项目
基金项目：国家自然科学基金 （）
