Abstract
This article presents an efficient way to calculate big bistatic angle scattering from underwater target using physical acoustic method. When using the traditional physical acoustic method to forecast bistatic echo of underwater target, the error is becoming unacceptable with the increment of bistatic angle. Aiming at this problem, the integral formula of the physical acoustic method is modified so that it can be used for arbitrary bistatic angle. Target strength of rigid sphere and cylinder with finite length is calculated to verify the proposed method. The simulation results show that the proposed method can be used to calculate big bistatic angle scattering from underwater target.
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