基于光纤模式数据采集方案的阵列快拍成像雷达

乞耀龙; 王彦平; 谭维贤; 张玉玺; 孙进平

doi:10.16798/j.issn.1003-0530.2017.04.019

基于光纤模式数据采集方案的阵列快拍成像雷达

中国安全生产科学研究院
北京科技大学土木与环境工程学院

基金项目: 国家自然科学基金青年基金(61401434)；国家自然科学基金面上项目（61372186）；中国博士后科学基金面上项目(2015M581142)；中央科研事业单位基本科研业务项目资助(2017JBKY05)

详细信息

中图分类号: TP79
计量
- 文章访问数: 136
- HTML全文浏览量: 0
- PDF下载量: 1165
出版历程
- 收稿日期: 2016-10-26
- 修回日期: 2017-02-13
- 发布日期: 2017-04-24

Array Snapshot Imaging Radar Based on Optical Fiber Data Acquisition and Transmission

China Academy of Safety Science and Technology
School of Civil and Environment Engineering, University of Science and Technology Beijing

摘要

摘要: 阵列快拍成像雷达采用阵列天线雷达成像体制，通过高速微波开关切换和高速数据采集，可以同时实现对目标的空间分辨和时间分辨，即实现雷达快拍成像，该技术在飞行器平台的辅助导航、交通监测等领域具有广阔的应用前景。阵列快拍成像雷达的特点是能够快速成像，核心技术包括微波信号收发、高速数据采集与传输、实时成像处理及阵列天线高速微波开关切换。其中，高速数据采集与传输是实现快速成像是正确成像的关键，数据缺失会导致图像散焦。本文首先分析了阵列快拍成像雷达成像原理及信号采样对数据采集与传输系统的要求；继而提出了基于光纤传输模式的数据采集与传输系统方案，系统采用四路高速AD对雷达基带信号进行采样，在FPGA中进行复数运算，通过光纤通道传送到主控计算机，系统传输速率可以达到2.5Gbps；最后，通过阵列快拍成像实验验证了系统的性能。
- 阵列快拍成像 /
- 高速AD /
- FPGA /
- 光纤模式
Abstract: Based on high-speed microwave switch and high-speed data acquisition, array snapshot imaging radar can simultaneously achieve spatial resolution and time resolution, that is, to achieve rapid radar imaging, which has wide application prospects in the fields of auxiliary navigation of aircraft platform, traffic monitoring. The main technology of snapshot imaging radar includes microwave signal transmission and reception, high-speed data acquisition and transmission, real-time imaging processing and array antenna high-speed microwave switch switching. And high -speed data acquisition and transmission is critical to achieve correct imaging which is related to the image focusing quality. In this paper, the imaging principle of array snapshot imaging radar and the requirement of signal sampling and data acquisition and transmission system are analyzed. Then, the data acquisition and transmission system based on optical fiber transmission mode is proposed, which uses four high-speed ADs to sample the radar baseband signal, achieves complex operation via FPGA, and transfers the echo to host computer via fiber channel. the system transfer rate can be up to 2.5 Gbps. Finally, through the performance of the system is verified via array snapshot imaging experiments.
- array snapshot imaging /
- high-speed AD /
- FPGA /
- Fiber optic mode

HTML全文

参考文献(10)

[1]	. J. Nouvel, H. Jeuland, G. Bonin, et al. A Ka-band Imaging Radar: DRIVE on board ONERA Motorglider[C]. 2006 IEEE International Geoscience and Remote Sensing Symposium (IGARSS 2006), Denver, United States, 2006.
[2]	. M. Weiβ, J. Ender. A 3D imaging radar for small unmanned airplanes-ARTINO [C]. European Radar Conference (EUSAR2005), 6-7 October, Paris, France, 2005: 209-212.
[3]	. J. Klare. A New Airborne Radar for 3D Imaging - Simulation Study of ARTINO[C]. 6th European Conference on Synthetic Aperture Radar (EUSAR2006), Dresden, Germany, 2006.
[4]	. Yang J, Thompson J, Huang X, et al. Random-Frequency SAR imaging based on compressed sensing [J].IEEE,2013,51(2):983-994.
[5]	. 高晓平, 孔令讲, 杨建宇. 定性分析DDS杂散对步进频率雷达性能的影响[J]. 计算机仿真, 2008, 25(12):17-20. GAO Xiao-ping, KONG Ling-jiang, YANG Jian-yu. The Influence of DDS Spurious Effects on Stepped-Frequency Radar's Performance [J]. Computer Simulation, 2008,25(12): 17-20 (in Chinese).
[6]	. 苏绍璟, 郭熙业, 张世猛, 等. 超高速光纤通信数据采集系统[J]. 数据采集与处理, 2007, 22(3):374-377. Su Shaojing, Guo Xiye, Zhang Shimeng Chen et al. Data Acquisition System of Ultra-High Speed Optical Communication[J]. Journal of Data Acquisition & Processing, 2007,22(3): 374-377 (in Chinese).
[7]	. Weixian TAN, Yaolong Qi, Yanping WANG, et al. Study on Fully Polarimetric 3D Microwave Imaging[C], IET International Radar Conference 2015, 2015.
[8]	. MARWAN Y, CHRISTIAN F. Digital Beamformingin SAR Systems[J]. IEEE Transactionson Geoscienceand Remote Sensing,2003, 41(71):1735-1739.
[9]	. Y.L. Qi, X.L. Yang, W.X. Tan, et al. Research on the Microwave Snapshot Imaging Radar Based on antenna array[C], IET International Radar Conference 2013, 2015.
[10]	. Yaolong QI, Weixian TAN, Xueming PENG, et al. Application of Optimized Sparse Antenna Array in Near Range 3D Microwave Imaging[J]. IEICE TRANS. COMMUN., 2013, E96-B(10):2542-2552.