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数据融合是声呐信号处理中非常引人注意的一个课题，本文讨论多传感器（或多基阵）系统决策级的数据融合问题，给出对同一参数Ｎ个独立观测资料的最佳线性数据融合算法。证明了，最佳线性数据融合的误差不大于任何一个独立观测的误差，同时给出计算误差的表达式。最后讨论测量时信噪比的影响。
Data fusion is a very attractive issue in sonar signal processing. This paper discusses the data fusion problem of decision-making level in multi-sensor (or multi-matrix) systems and presents the best linear data fusion algorithm for N independent observations of the same parameter . It is proved that the error of the best linear data fusion is not greater than the error of any independent observation and the expression of the calculation error is given. Finally, discuss the impact of signal to noise ratio during measurement.