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Underwater target echo characteristics simulation water acoustics research direction , forming underwater target simulation technology can be applied to the field of marine acoustic test design , assessment of underwater acoustic equipment , underwater acoustic target deceive . Improve underwater target echo simulation results has been the efforts of relevant professional direction . Thesis an active simulation device the active detection signal incident target feature compensation , compared echo signals generated copy of the response signal , can be greatly improved simulation similarity . On the basis of analyzing the echo mechanism thesis constitute a study of the characteristics of the echo extracted offshore Found echo signal copy the envelope fluctuations of the response signal , the phase fluctuation, the Doppler frequency shift, and spectral broadening and time frequency energy , and other characteristics , the difference between the two signals ; the solver target characteristic response using the frequency in response to the direct sound signal , characterized in compensation to simulate the echo, and were compared with the Copy response signal , the method and algorithm for authentication ; design, build simulation test apparatus hardware device ; Finally , sea trials , on the hardware and software apparatus performance evaluation to verify the feasibility of the method and apparatus .
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