异地天线组阵相关处理技术研究

深空探测的发展对信噪比的要求越来越高,异地天线组阵利用现有天线设施合成信号,显著提高信号SNR。针对异地天线组阵基线长、钟差大和信号到达时间不一致等特点对异地天线组阵信号合成效率的影响,结合现有集群结构的性能,给出天线组阵信号合成并行算法与Sumple算法相结合的处理方案,并在计算仿真中心上实现4路组阵信号全频谱合成,理论上有6 dB的增益。

Study on Long Baseline Antenna Arraying Correlation Processing Technology

The development of deep space exploration requires greater and greater S NR.The long baseline antenna arraying utilizes the existing antenna infrastruct ure for signal combination to significantly increase the SNR.The long baseline antenna arraying has such characteristics as long baseline,large clock offset a nd inconsistent time of arrival,etc.which affect the efficiency of signal comb ination.With the performance of cluster structure,the solution of combining pa rallel algorithm of antenna arraying signal combination with Sumple algorithm is proposed,and the full spectrum combination of 4 channels of arraying signal is implemented at the computer simulation center,with 6 dB of gain theoretically.