双通道短时互谱法的潜艇目标尺度识别

阐述了双通道短时互谱法的基本理论,分析了目标方位走向,提出了利用体目标回波的空间方位分布信息识别水下目标尺度的方法。最后采用潜艇目标亮点模型,通过计算机仿真给出了目标方位走向拟合示意图,给出了在不同攻击阵位的条件下,鱼雷对潜艇目标进行尺度识别的估计值和估计方差并进行了相应的分析,确定了最有利于目标识别的攻击弦角。

Submarine Target Identification based on Short-time Cross-spectrum

Estimation of target state parameters is of great interest in active torpedo where the range from the torpedo to target is relatively small compared to the length of the target.The article expatiate cross-spectrum directional theory based on split beam and study highlight model of underwater target.The method evaluated the liner dimension of the target and realized the recognition of target by means of estimating target reverberation azimuth angle of highlight model.In the end,computer simulation give out variance estimate and analyzed the simulation result which proved this method can meet the requirement of submarine target dimension recognition.