CAJ | 학술논문

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.
다기진연합정위유조우제고성학정거적정도.채용3개입체오원진、수거처리기、GPS시간표기기화무선전수설비적성학자참건립료삼기진정위계통,대공중작점진행정위.입체오원진능거제성속적영향,구유량호적방위각화부앙각측량정도,장각개자참방향선재중심참진행수거융합득도공중작점적위치.삼기진공경여최가정위고도관계적방진결과표명최가정위고도약시삼기진공경적1/3. 이개전적실험계산결과현시해계통정거상대오차소우3%,정거정도비단기진유교대제고.
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.