Based on the characteristics of sound signal in near⁃field, TDOA algorithm is used to locate the acoustic source. In order to obtain ideal time delay estimation, an anchor node selection and time delay estimation strategy are proposed. This strategy can eliminate error nodes and pick out the optimal anchor nodes involved in localization. Aiming at problems of mul⁃tiple solution in solving process, a regional judging rule is put forward to solving the equations after multiple judgment of the target location. This rule can reduce the number of equations involved in calculation. Compared with other methods,it can re⁃duce the amount of system calculation under the premise that does not affect the positioning accuracy. As the experiment shows that the method reduces the amount of calculation significantly compared with other methods and has high precision and good positioning effect.%针对近场环境下声音信号的特点，采用TDOA算法对声源进行定位。为了获得较为理想的时延估计，提出了一种锚节点挑选和时延估计策略，剔除误差较大的节点，挑选最优锚节点参与定位。针对求解过程中出现的多解问题，提出一种区域判别法则，对目标位置进行多重判断后再求解，减少了参与计算的方程数量，在不影响定位精度的前提下降低了系统计算量，并与其他方法进行对比。实验表明，该方法相比于其他方法计算量明显减小，并且精度较高，具有较好的定位效果。
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