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介绍了基于时频分析的逆合成孔径声纳距离-多普勒成像的数学模型,并针对传统时频分析方法中交叉项对成像质量的影响,使用了新的时频分析方法,从而较好地抑制了交叉项的干扰。数字仿真结果表明,该改进方法是可行的。
A mathematical model of inverse synthetic aperture sonar-Doppler imaging based on time-frequency analysis is introduced. A new time-frequency analysis method is adopted to deal with the influence of cross terms on the imaging quality in traditional time-frequency analysis To suppress the crosstalk interference. The numerical simulation results show that the improved method is feasible.