一种调频连续波阵列雷达的软件校准方法  

A Software Calibration Method for FMCW Array Radar

作　　者：完诚[1] 赵中兴[1] 张磊[1] 郑文文 WAN Cheng;ZHAO Zhong-xing;ZHANG Lei;ZHENG Wen-wen(The 723 Institute of CSIC,Yangzhou 225101,China)

机构地区：[1]中国船舶重工集团公司第七二三研究所,扬州225101

出　　处：《舰船电子对抗》2021年第2期40-44,共5页Shipboard Electronic Countermeasure

摘　　要：提出了一种应用于调频连续波阵列雷达的软件校准方法,首先建立了非线性VCO特性和空间误差的雷达模型,通过时间域对发射机VCO的非线性进行快速补偿校准以及空间域对天线线阵间通道相位、幅度和时延的校准,最终使得雷达线性调频信号和阵面方向图满足设计要求。通过基于宽带X波段调频连续波雷达的仿真与实验分析,表明通过该软件校准方法可以使距离分辨率和方位角分辨率满足理论值要求。This paper proposes a software calibration method applied to frequency modulation constant wave(FMCW)array radar.First,a radar model of nonlinear voltage controlled oscillator(VCO)features and spatial errors is established.By fast compensating and calibrating the nonlinearity of transmitter VCO in time domain and calibrating the channel phase,amplitude and time delay between antenna linear arrays in space domain,thereby the radar chirp signal and array pattern meet the design requirements finally.The simulation and experimental analysis of the broadband X-band FMCW radar show that the range resolution and azimuth resolution can meet the theoretical value requirements through this software calibration method.

关 键 词：调频连续波雷达 软件校准 非线性补偿 

分 类 号：TN958[电子电信—信号与信息处理]