基于复合双基阵的弹丸落点观测声定位方法

Acoustic Location Method of Projectile Impact-point Based on Compound Double-Arrays

基于单基阵的弹丸落点声定位方法存在定距误差大且定向误差小的缺点,针对此问题,利用双基阵交叉定位实现了落点定位。针对双基阵落点定位方法存在一定盲区的不足,提出了一种基于复合双基阵的弹丸落点观测声定位方法。以五元十字阵为复合阵列的基本单元,建立双基阵以及复合双基阵的数学模型,并对定位算法和定向、定距精度进行了理论推导和仿真分析,进行了外场模拟实验。实验结果表明:基于复合双基阵的弹丸落点声定位方法能够有效实现全区域的声定位,相对方位角误差和距离误差均小于4%,定位精度较高。

By the acoustic location method based on the single array, the obtained distance error of projectile impact-point is large, but the direction error is small. Aiming at this problem, the location of projectile impact-point was achieved by crossing the azimuth lines of two arrays. Aiming at the blind area of double arrays method, an acoustic location method based on compound double arrays was put forward. Taking five-elements cross arrays as the basic units of compound arrays, the mathematical models of double arrays and compound double arrays were established, and the analysis on locating algorithm and locating precision of methods was conducted. The result of out-field experiment shows that the whole area acoustic location of projectile impact-points can be achieved by method of compound double arrays, and the relative azimuth error and distance error are less than 4%, and the location precision is high.