本文对有限面积噪声源产生的噪声场的空间相关特性作了讨论。分别研究了接收器处于源区域里面和外面的情形。对一浅海典型声速剖面和 Baltic海区的噪声场相关特性及噪声场强度进行了计算 ,并与无限大噪声源平面的噪声场特性作了比较。同时 ,为把连续谱考虑在内 ,引入一虚假深海底 ,用复模式和来近似计算分支割线的贡献。但当接收器远离源区域时 ,连续谱经过在下介质中的长程传播 ,衰减迅速 ,故其对噪声场的贡献可以忽略 ,而仅考虑离散简正波场的贡献。结果发现 ,有限面积源的噪声场结构无论是水平结构 ,还是垂直结构均是不均匀的 ,都依赖于接收场点的绝对位置。这与无限大噪声源平面所形成的噪声场的特性是不一样的 This paper discusses the spatial correlation of the noise field generated by a limited area noise source. The cases where the receiver is inside and outside the source region are studied separately. The noise field characteristics and noise field intensity of a shallow sea typical sound velocity profile and the Baltic sea area are calculated and compared with the noise field characteristics of an infinite noise source plane. At the same time, in order to consider the continuum, a false deep sea is introduced, and the contribution of the branch secant is approximated by the complex mode. However, when the receiver is far away from the source region, the continuous spectrum propagates through the long medium in the lower medium and decays rapidly, so its contribution to the noise field can be neglected, and only the contribution of the discrete normal wave field is considered. It is found that the noise field structure of a finite area source, whether horizontal or vertical, is inhomogeneous and depends on the absolute position of the receiving field. This is not the same with the noise field formed by the infinite noise source plane