A polynomial-rooting based fourth-order cumulant algorithm is presented for direction-of-arrival（DOA） estimation of second-order fully noncircular source signals, using a uniform linear array（ULA）. This algorithm ...A polynomial-rooting based fourth-order cumulant algorithm is presented for direction-of-arrival（DOA） estimation of second-order fully noncircular source signals, using a uniform linear array（ULA）. This algorithm inherits all merits of its spectralsearching counterpart except for the applicability to arbitrary array geometry, while reducing considerably the computation cost.Simulation results show that the proposed algorithm outperforms the previously developed closed-form second-order noncircular ESPRIT method, in terms of processing capacity and DOA estimation accuracy, especially in the presence of spatially colored noise.展开更多
针对发酵过程发酵阶段具有模糊性的特点,提出了采用最小二乘支持向量机(least square support vectormachines,LS-SVM)提取并简化模糊规则的推理优化控制方法。利用能够在线测量的物理量,如CO2生成速率和NH3的添加量等,在线判定发酵过...针对发酵过程发酵阶段具有模糊性的特点,提出了采用最小二乘支持向量机(least square support vectormachines,LS-SVM)提取并简化模糊规则的推理优化控制方法。利用能够在线测量的物理量,如CO2生成速率和NH3的添加量等,在线判定发酵过程所处的阶段,然后依据加权平均的方法确定各个时刻葡萄糖的流加策略,完成了对分段连续流加补料的稳定控制。通过实际应用,证明了该方法的有效性。展开更多
基金supported by the National Natural Science Foundation of China(617020986170209961331019)
文摘A polynomial-rooting based fourth-order cumulant algorithm is presented for direction-of-arrival（DOA） estimation of second-order fully noncircular source signals, using a uniform linear array（ULA）. This algorithm inherits all merits of its spectralsearching counterpart except for the applicability to arbitrary array geometry, while reducing considerably the computation cost.Simulation results show that the proposed algorithm outperforms the previously developed closed-form second-order noncircular ESPRIT method, in terms of processing capacity and DOA estimation accuracy, especially in the presence of spatially colored noise.
文摘针对发酵过程发酵阶段具有模糊性的特点,提出了采用最小二乘支持向量机(least square support vectormachines,LS-SVM)提取并简化模糊规则的推理优化控制方法。利用能够在线测量的物理量,如CO2生成速率和NH3的添加量等,在线判定发酵过程所处的阶段,然后依据加权平均的方法确定各个时刻葡萄糖的流加策略,完成了对分段连续流加补料的稳定控制。通过实际应用,证明了该方法的有效性。
