基于倾斜阵的距离与方位联合估计*

针对阵列倾斜引起的阵不变量方法定位精度下降的问题，该文结合倾斜阵声源定位的三维模型提出一种基于倾斜阵的距离与方位联合估计算法。该算法通过联合自校正方位距离联合估计方法对阵列倾角在声源-接收平面的投影量进行估计和补偿，改善目标距离估计误差的同时，利用匹配出的阵列倾角投影量反向估计目标方位，获得对声源二维位置的估计。通过仿真验证了该算法能够在阵列倾角较小时实现目标方位与距离的联合估计。

Joint range and azimuth estimation based on tilted array invariant method

Aiming at the problem that the positioning accuracy of array invariant method decreases due to array tilt, a joint estimation algorithm of range and azimuth based on tilted array is proposed combining with 3d model of tilted array sound source positioning. This algorithm estimates and compensates the projection amount of array tilt angle on the source-receiving plane by using the joint self- self-calibrate method, improves the estimation error of target range, and uses the matched projection amount of array tilt angle to estimate the target azimuth in reverse order to obtain the estimation of two-dimensional position of the sound source. Simulation results show that the proposed algorithm can realize joint estimation of target azimuth and range when array inclination is small.