和差式相位测向法在吊放声纳改进中的运用研究

Application of Sum-Difference Phase Direction Finding Method in the Improvement of the Dipping Sonar

国内某型吊放声纳在模拟信号处理过程中存在操作复杂和测向精度不高等问题,早期和差式相位测向法需要复杂的显示系统,对人员的操作要求较高,并且误差较大。通过分析影响吊放声纳测向的因素,在模拟处理转变为数字信号处理技术后,基于和差式相位测向原理,同时引入恒虚假检测以及目标参数估计等后处理算法流程,可直接精确地计算出目标方位,降低了对操作技能的要求,最终确定数字化改造的方向,为早期模拟吊放声纳装备性能改进提供了依据和参考。

In the process of analog signal processing,there are problems of complex operation and low direction finding accuracy in a certain type of dipping sonar in China.The early sum-difference phase direction finding method requires a complex display system,which requires high personnel operation and has large errors.By analyzing the factors that affect the direction finding of the dipping sonar,after the analog processing is converted into digital signal processing technology,based on the principle of sum-difference phase direction finding,and at the same time post-processing algorithm processes such as constant false detection and target parameter estimation are introduced,the target orientation can be directly and accurately calculated,the requirements for operating skills are reduced,and finally the direction of digital transformation is determined.It provides a basis and reference for the performance improvement of early simulated dipping sonar equipment.