基于微波光子去斜接收的二维到达角估计方案  

Two-dimension angle-of-arrival estimation scheme based on microwave photonic de-chirping reception

作　　者：杨仕铭 李尚远 谭伊璇 邓焕坚 谢威 刘嫱 张振荣[1,3] 耿敏明 YANG Shiming;LI Shangyuan;TAN Yixuan;DENG Huanjian;XIE Wei;LIU Qiang;ZHANG Zhenrong;GENG Minming(School of Computer,Electronics and Information,Guangxi University,Nanning 530004,China;Department of Electronic Engineering,Tsinghua University,Beijing 100084,China;Guangxi Key Laboratory of Multimedia Communications and Network Technology,Nanning 530004,China)

机构地区：[1]广西大学计算机与电子信息学院,南宁530004 [2]清华大学电子工程系,北京100084 [3]广西多媒体通信与网络技术重点实验室,南宁530004

出　　处：《光通信技术》2023年第3期62-68,共7页Optical Communication Technology

基　　金：国家自然科学基金项目(61965003、61741504)资助。

摘　　要：为减少目前微波光子领域到达角(AOA)测量易受相位、噪声等影响,实现二维平面内大范围的AOA测量,提出并实验验证了一种基于微波光子去斜接收的二维AOA估计方案。该方案接收端利用L型天线阵加入固定延迟时间的方法,可以估计一维AOA,利用该一维AOA可求解出二维AOA(俯仰角和方位角)。实验结果表明:在天线间隔为5 m,输入线性调频连续信号的信噪比为10 dB或-7.8 dB的情况下,所提方案的一维AOA的估计结果具有大范围的特点,且在-79°~74°内估计误差均小于2°,同时,计算得到的俯仰角和方位角在较大范围内都具有较高的精度。In order to overcome the influence of phase and noise on the current angle of arrival(AOA)measurement in the microwave photon field,and to achieve a wide range of AOA measurement in a two-dimensional plane,a two-dimension AOA estimation scheme based on microwave photonic de-chirping reception is proposed and experimentally demonstrated in this paper.At the receiver of this scheme,an L-shaped antenna with a fixed delay time method is used to estimate the one-dimensional AOA.The elevation angle and azimuth angle of two-dimension AOA can be obtained by using the one-dimensional AOA.The experimental results show that when the antenna spacing is 5 m and the signal-to-noise ratio of the input linear frequency modulation continuous signal is 10 dB or-7.8 dB,the estimation results of one-dimensional AOA of the proposed scheme have a wide range of characteristics,and the estimation error is less than 2°in the range of-79°~74°,at the same time,the calculated elevation angle and azimuth angle have high accuracy in a large range.

关 键 词：微波光子学 去斜 二维到达角 线性调频信号 

分 类 号：TN953.5[电子电信—信号与信息处理]