CAJ | 학술논문

三维前视声像声呐是安装在小型水下载体上的重要声学探测设备。提出了基于波达方向估计技术的三维前视声呐信号处理方法，接收阵水平方向采用波束形成技术，垂直方向采用波达方向估计技术。在波束内采用分裂孔径相位法提高水平方向分辨率，形成声呐阵前方的三维声像。仿真结果和水池实验结果表明：在接收阵面面积相同的条件下，能够获得优于常规技术的分辨率，可以实现点目标和连续目标的探测，适合于在水下载体上安装使用。
삼유전시성상성눌시안장재소형수하재체상적중요성학탐측설비。제출료기우파체방향고계기술적삼유전시성눌신호처리방법，접수진수평방향채용파속형성기술，수직방향채용파체방향고계기술。재파속내채용분렬공경상위법제고수평방향분변솔，형성성눌진전방적삼유성상。방진결과화수지실험결과표명：재접수진면면적상동적조건하，능구획득우우상규기술적분변솔，가이실현점목표화련속목표적탐측，괄합우재수하재체상안장사용。
A signal processing method for 3D forward-looking Sonar based on Direction of Arrival Estimation is pre-sented. Beamforming is used in horizontal direction of the receive array, and DOA estimation is employed in vertical direction. Phase estimation is also implemented to improve the resolution in horizontal direction for detecting conti-nuous target. Finally the 3D image in the front of sonar array is formed. The results of tests show that the method can get higher resolution than the sonar using beamforming with the same area of receiver array. The sonar using the method is more suitable for underwater vehicles.