摘要
提出了一种基于天线扫描的雷达成像体制,该新体制雷达成像不需要雷达或目标运动,就能对目标成像。在天线波束角度扫描过程中,对雷达发射信号进行脉冲压缩编码调制,编码调制与波束角度扫描同步进行,进而在波束扫描角度维进行脉冲压缩,提高雷达的角度分辨率;同时,利用宽带信号提高距离维分辨率,获得目标两维(距离维和角度维)高分辨率雷达图像。针对不同信噪比情况进行了计算机仿真,仿真结果验证了这种新体制雷达成像的有效性。
A radar imaging system based on antenna scanning is proposed.This new system can image the target without radar or target motion.In the process of antenna beam angle scanning,pulse compression coding modulation is applied to the radar transmitting signal,which is synchronized with the beam angle scanning,and then pulse compression is applied to the beam scanning angle dimension to improve the angle resolution of the radar.At the same time,the wideband signal is used to improve the range dimension resolution,and the two-dimensional(range dimension and angle dimension),high-resolution radar image of the target is obtained.Simulation is carried out for different signal-to-noise ratios,the simulation results show that the new radar imaging system is effective.
作者
丁斌
夏雪
DING Bin;XIA Xue(Xi'an University,Xi'an 710000 China;Xi'an Shiyou University,Xi'an 710000 China)
出处
《电光与控制》
CSCD
北大核心
2022年第9期78-83,共6页
Electronics Optics & Control
基金
西安市科技计划项目(2019KJWL30)。
关键词
雷达成像
高分辨率
新体制
天线扫描
radar imaging
high resolution
new system
antenna scanning
