一种主/被动声呐目标回波信号模拟器的研制

根据实际需要，研制了一种主／被动声呐目标回波信号模拟器，该模拟器能够产生主／被动声呐测试、定检所需的主／被动声呐目标回波信号，目标回波信号中包含主动声呐、目标辐射噪声、海杂波、混响等信号，信号输出形式包括声信号和电信号2种。该模拟器可在空气介质条件下，实现声呐接收、处理、显示系统的定检，以及声呐测距系统和方位系统的定检；在水声环境中，可实现对接收换能器方向性、接收系统灵敏度等的测试。通过性能测试及与实际声呐系统联试，证明该模拟器达到了设计功能和性能指标要求，已交付用户使用。这里对其主要数学模型、系统硬件结构、软件流程进行了简要介绍。

Development of a Kind of Active and Passive Sonar Target Echo Signal Simulator

A simulator of target echo signal for active and passive sonar has been developed which based on practical needs,and it can generate electronic and acoustic signals including passive or active sonar signal,target radiated noise,sea clutter and reverberation signals for passive or active sonar test.The simulator can realize the test of sonar's receiving,processing,display,distance system and azimuth system in the condition of air medium,and can also realize the test of transducer's direction performance and receiver's sensibility in underwater environment.It has been proved that the simulator reached the standard of the design function and performance by way of performance test and test with practice sonar system.The key technologies,such as mathematic models,system hardware structure and the software structure are mainly introduced.