摘要
为增大水下声基阵的作用距离,水下声系统的主要发展趋势之一是低频化。但在低频段上获得大的辐射功率并保持期望的发射指向性,安装在水下航行器头部的常规平面基阵不能满足要求。为解决这个问题,现在多采用共形布阵方式,这样可以增大基阵的辐射面积,同时扩大基阵发射和接收波束的覆盖范围,在多个方面较之平面阵具有优势。通过分析比较水下航行器头部共形阵和平面阵的主要性能参数,对其不同工作频率下作用距离进行对比计算,验证低频条件下共形阵作用距离比平面阵有明显的优势。
For enlarging the operating distance of the underwater transducer, one of the development trends of the underwater acoustic system is to use low frequency. But, if people want to get large radiation power and keep expected beam pattern in the low frequency, the head of underwater vehicle with normal planar array can＇t satisfy the requirement. Adopting the conformal array can enlarge the area of radiation totally, and at the same time, extend the beam coverage of the array. The key parameters between the conformal array and planar array on the head of under-water vehicle are analyzed and compared to verify the advantage of conformal array in low frequency.
出处
《计算机仿真》
CSCD
2008年第2期6-8,共3页
Computer Simulation
关键词
共形阵
平面阵
低频
作用距离
Conformal array
Planar array
Low frequency
Operating distance
