鱼雷自寻仿真可信性的时－频分析研究

仿真系统应尽量真实地反映实际系统的特性，仿真结果是否可信，是评价仿真性能不可缺少的环节。受水下复杂环境的影响，鱼雷自导的目标特性和海洋混响具有非平衡性。本文采用基于时－频分析的二维互相关方法，评估鱼雷自导仿真结果的可信性。并用仿真数据和实测数据对这种方法进行验证。实验结果表明，该方法在评价鱼雷自导目标特性，海洋混响仿真结果的可信性方面，是一种非常有效的方法。

Study of Torpedo Homing Simulation Credibility on the Basis of Time-Frequency Analysis

Simulation reflects the properties of a real system as closely as possible. It is essential to evaluate whether or not simulated results are credible. Under the effects of complex underwater conditions, the torpedo homing target and oceanic reverberation have non-stationary properties. The two-dimensional cross-correlation method on the basis of time-frequency analysis is presented in this paper to evaluate torpedo homing simulation credibility. This method is proved by simulated data and measured data. Results show that it is an effective way to evaluate torpedo homing simulation credibility.