direction of arrival短语¹⁸⁰⁰⁹⁸⁺¹ 基本例句 波达方向 In order to verify the validity for signal phase matching principle, the experiments of DOA Direction of Arrival estimation are carried out at reservoir by using16-sensor array. 为了验证信号相位匹配原理的正确性，利用自制的16元线列阵，在水库进行了声源定向实验研究。 cnki