GNSS自适应天线阵的相位中心误差研究  

Study on phase center error of GNSS adaptive antenna array

作　　者：曹可劲[1] 马恒超 朱银兵[1] 李豹[1] CAO Ke-jin;MA Heng-chao;ZHU Yin-bing;LI Bao(College of Electrical Engineering,Naval Univ.of Engineering,Wuhan 430033,China)

机构地区：[1]海军工程大学电气工程学院,武汉430033

出　　处：《海军工程大学学报》2020年第4期32-36,共5页Journal of Naval University of Engineering

基　　金：国家自然科学基金重点资助项目(41631072)。

摘　　要：为尽可能降低GNSS自适应天线阵相位中心变化引入的定位误差,提出了一种计算理想天线阵相位中心的方法。首先,分析了阵列天线模型及其方向函数;然后,结合其定义与方向函数的关系推导了相位中心的算法。仿真结果表明:加自适应算法后,相位中心的误差可以达到分米级,但在高精度应用时必须加以修正,验证了该算法的有效性。In order to minimize the positioning error introduced by the phase center variation of the GNSS adaptive antenna array,a method for calculating the phase center of the ideal antenna array is proposed.Firstly,the array antenna model and its direction function were analyzed,and then the phase center algorithm was derived by combining its definition with the direction function.The simulation results verify the effectiveness of the proposed algorithm and show that the error of the phase center can reach the decimeter level after applying the adaptive algorithm.Therefore,the phase center error must be corrected in the high-precision applications.

关 键 词：全球卫星导航系统 相位中心 阵列天线 方向函数 

分 类 号：TN967.1[电子电信—信号与信息处理]