论文部分内容阅读
提出将MEMS矢量水听器应用于潜标系统,并进行了大量实验验证其可行性。MEMS矢量水听器是一种新型水下声学传感器,它具有体积小、成本低、一致性高和高灵敏度等优点。将水听器应用于潜标系统,可以大幅降低阵列孔径,进而有效地监测海洋声场的矢量信息。矢量水听器矢量通道的指向性与频率无关,在低频和甚低频同样可以获得良好的空间增益,应用在低频和甚低频领域中,可以有效地解决声纳设备体积庞大的问题。经过对系统样机进行多次室内驻波桶调试和外场湖试与海试,结果表明,该系统能有效检测海底20~1000Hz范围内的声场矢量信号,水听器此时的灵敏度可达-176dB,且具有良好的“8”字型指向性。实验结果证明了MEMS矢量水听器应用在潜标系统中进行海洋声场矢量信息探测的可行性,为MEMS矢量水听器在水下目标探测领域的研究提供了良好的试验平台,并为其工程化应用奠定了基础。
The application of MEMS vector hydrophone to submarine system was proposed and a lot of experiments were carried out to verify its feasibility. MEMS vector hydrophone is a new underwater acoustic sensor, which has the advantages of small size, low cost, high consistency and high sensitivity. The hydrophone applied to the submarine system, can significantly reduce the array aperture, and thus effectively monitor the ocean sound field vector information. Vector hydrophone vector channel directivity has nothing to do with the frequency, low frequency and very low frequency also can get a good space gain, used in low frequency and very low frequency areas, can effectively solve the problem of bulky sonar equipment. After several tests of standing wave barrel and field test and sea test in the prototype of the system, the results show that the system can effectively detect the sound field vector signal in the range of 20 ~ 1000Hz. The sensitivity of hydrophone can reach-176dB , And has a good “8 ” font orientation. The experimental results prove the feasibility of using MEMS vector hydrophone to detect vector information of ocean sound field in submarine system and provide a good experimental platform for MEMS vector hydrophone research in the field of underwater target detection. Application laid the foundation.