摘要
多基阵联合定位有助于提高声学定距的精度。采用3个立体五元阵、数据处理器、GPS时间标记器和无线传输设备的声学子站建立了三基阵定位系统,对空中炸点进行定位。立体五元阵能去除声速的影响,具有良好的方位角和俯仰角测量精度,将各个子站方向线在中心站进行数据融合得到空中炸点的位置。三基阵孔径与最佳定位高度关系的仿真结果表明最佳定位高度约是三基阵孔径的1/3.已开展的实验计算结果显示该系统定距相对误差小于3%,定距精度比单基阵有较大提高。
The associated localization of multiple acoustic arrays is conducive to the improvement of the distance measurement precision. A three-array localization system, which is based on pyramid array composed of five microphones, data processor, GPS time marker and radio transmission device, was built for the aerial blast point localization. The position of aerial blast point was calculated by fusing directional lines of the distributed stations, which have fine measurement precisions of azimuth and elevation angles in spite of influence of acoustic velocity on the precision. The simulated results of the relation between the diameters of three-array and the optimal localization altitude indicate that the optimal localization altitude is one third of the diameters of three-array. The comparison between the calculated and the experimented shows that relative error of distance measurement of the localization system is less than 3% , distance measurement precision of the system is higher than that of the single array.
出处
《兵工学报》
EI
CAS
CSCD
北大核心
2010年第3期343-349,共7页
Acta Armamentarii
关键词
信息处理技术
声阵列
被动声定位
无线传输
数据融合
information processing technique
acoustic array
passive acoustic localization
radio transmission
data fusion
