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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，给出对同一个参数Ｎ个互相相关的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分量的观测误差，同时给出计算误差的表达式，最后给出了数值计算的例子．
Data fusion is a very interesting issue in sonar signal processing. This paper discusses the data fusion problem at the decision-making level of multisensor (or multi-matrix) systems, and presents the best linear data fusion algorithm for N observations of the same parameter. It is proved that the error of the best linear data fusion is not greater than the observation error of any one component, meanwhile the expression of calculation error is given. Finally, numerical examples are given.