微波光子W波段宽带雷达成像技术研究
Research on W-band wideband radar imaging technology based on microwave photonics technology
江利中 1颜露新 2谭姗姗 3茹海忠 4杨明远3
作者信息
- 1. 华中科技大学人工智能与 自动化学院,湖北武汉 430074;上海无线电设备研究所,上海 201109
- 2. 华中科技大学人工智能与 自动化学院,湖北武汉 430074
- 3. 上海无线电设备研究所,上海 201109
- 4. 上海卫星工程研究所,上海 200240
- 折叠
摘要
W波段逆合成孔径雷达(inverse synthetic aperture radar,ISAR)具有成像分辨率高、成像距离远、体积小、重量轻等特点,适用于机载、弹载、星载等应用领域,是雷达系统中的一个重要的研究方向.微波光子技术由于具有高频、大带宽、低传输损耗等优势,是克服传统雷达面临"电子瓶颈"效应的主要手段.本文提出一种基于微波光子技术实现的W波段调频信号体制ISAR成像系统.在发射端,使用微波光子倍频技术实现了瞬时带宽为8 GHz的W波段线性调频(linearly frequency-modulated,LFM)信号生成.在接收端,基于微波光子去斜技术实现回波信号去斜处理.ISAR成像仿真结果表明,不同姿态下的目标轮廓清晰可辨.
Abstract
As an important research direction of the radar system,W-band inverse synthetic aperture radar(ISAR),which is featured by high resolution,long detection range,miniaturization and lightweight,can be used as airborne,missile-borne and spaceborne applications.Microwave photonics technology is the main means to overcome the electronic bottleneck effect of the conventional radar due to high frequency band,large bandwidth and low loss transmission.A W-band frequency-modulated ISAR imaging system is proposed based on microwave photonics technology.In the transmitter,a W-band linearly frequency-modulated(LFM)signal with an instantaneous bandwidth of 8 GHz is generated using microwave photonic frequency multiplication.In the receiver,target echo signals are de-chirped based on microwave photonic de-chirp receiving.ISAR imaging simulation results show that the contours of the target in different postures are clear and discernible.
关键词
微波光子/W波段/成像雷达/逆合成孔径Key words
microwave photonics/W-band/imaging radar/inverse synthetic aperture引用本文复制引用
出版年
2024
NETL
NSTL
万方数据