Target Simulation System and Method.

摘要

A target simulation provides a controlled simulation of an underwater target for testing and evaluating a sonar system. The target simulation system receives an acoustic test signal and generates a simulated reflected signal emulating the test signal reflected from a target of known target strength. The target simulation system includes hydrophones and projectors located underwater and a signal process inc system located out of the water. The signal processing system detects the test signal received by the hydrophones and converts the test signal to digital format. A computer system modulates or weights the digital test signal using a target strength value representing the target strength to produce a digital representation of a simulated reflected signal. This digital simulated reflected signal is converted to an analog format and is retransmitted as a simulated reflected acoustic signal using the projector. The level of the simulated reflected acoustic signal can be increased or decreased to simulate various sizes of the same target.