编队条件下主动声纳抗假目标干扰分析及对策

研究编队条件下同频假目标干扰及对策。首先分析假目标干扰在空域、频域上的能量干扰机理,以声纳方程为基础,建立了统一的干扰方程。以典型的小型编组为例,分析了各种类型的同频假目标干扰程度,并进行了数值仿真,结果表明：1）相同波形信号的同频假目标干扰最严重;2）通过频率分集可以有效减小同频假目标干扰,通过量程分集可以迅速有效判断真假目标。研究成果可为编队条件下主动声纳的作战使用和抗干扰技术改进提供决策依据和理论参考。

Analysis and Countermeasures of False Target Interference of Active Sonar Used by Surface Combat Group

Investigation of false target interference of active sonar under conditions of surface combat group usage has been proposed with countermeasures of tactics.In order to tackle the problems of false target interference caused by active sonar,sonar equation has been used to establish the uniform jamming equation according to the sources and types of false target interference.Thereafter,a typical small combat group has been used as example for numerical simulation,and the results show that(1) false target interference caused by same-frequency sonar waveform usually forms the most severe interference;(2) false target interference can be effectively suppressed via split-bands in frequency domain and distinguished by changing detecting range.The research will provide some insights for active sonar combat use under group condition and technical modification for jamming countermeasure.