SUMPLE算法的合成权值相位性能分析与仿真

SUMPLE算法是深空网天线组阵中信号合成的最重要方法之一。研究了合成权值的补偿相位估计性能,从参数估计角度分析了该算法具有较好的合成性能原因。同时,进一步利用SUMPLE算法合成权值之间相位差实现多天线信号间的相位差估计,并推导了估计算法的理论性能以及分析了天线数对算法性能的影响。理论分析与仿真结果表明,天线数越多,相位差估计性能越接近估计下界,较适合于低信噪比下多天线信号间的相位差估计。

Performance Analysis and Simulation of Combining Weight Phase Based on SUMPLE Algorithm

SUMPLE is one of the most important array coherence techniques in deep space network.The reason why the algorithm could provide very low combining loss for weak signals on account of the compensating phase performance was explained.Moreover,a new method which utilizes combining weight phase difference based on SUMPLE algorithm for estimating phase difference between the signals was proposed to improve the performance.The corresponding theoretical performance and the demand least antenna number were also derived.Theoretical analysis and simulation results show that the method can improve the performance of phase difference estimation as the number of antenna increases,and adapt to the multi-antenna system,especially at low SNR level.