【摘要】 文中利用基于FFT变换的合成孔径处理技术,从提高阵增益、增加目标远程定位能力的角度出发进行了3~10kHz频率段的合成孔径技术研究。仿真结果表明,通过合成孔径处理有效的扩展了AUV阵列孔径,在系统200~210dB声源级下,在不到1s的测量时间内,AUV合成阵能够将系统空间增益提高近7dB,作用距离增大了近2km。更多还原

【Abstract】 This paper introduces a synthetic aperture processing techniques based on the FFT transform and the technical researches on the synthetic aperture system in the scope of 3～10kHz frequency were made from the view of improving array gains and augmenting localization abilities for the long distance targets.The simulation results show that the AUV array apertures were extended effectively by synthetic aperture processing and the space gain were improved by nearly 7db and the detecting distance was increased 2 Km under the condition of 200-210 db of the Acoustic Source Level for AUV system in measurement interval of nearly 1 second.更多还原