doAs词根词缀

The ability of long-distance searching goals of an acoustic homing torpedo can be improved greatly by using towed linear array, and the power of DOAs tracking of the torpedo is the key factor that influences the result in a war.

使用拖曳线列阵可以有效提高自导鱼雷远程搜索目标的能力，而能否精确跟踪目标方位将直接影响到鱼雷的实战效果。

The proposed algorithm uses a new method of modified TLS-ESPRIT to estimate the DOAs of uncorrelated signals, and then construct a new Toeplitz matrix by rearranging the elements in spatial difference matrix.

所提算法利用一种改进的TLS-ESPRIT算法估计不相关信号的DOA，然后通过对空间差分矩阵中的元素进行重新排列构造新的Toeplitz矩阵。

By using spatial differencing technique, the effect of correlated noise with Toeplitz-structure covariance matrix is removed. Afterwards, the two methods make use of different ways to estimate the DOAs of wideband coherent signals.

首先利用空间差分技术去除具有Toeplitz型协方差矩阵的相关噪声的影响，之后两种算法采用不同的方法来估计宽带相干信号的DOA。