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.