Realization of a Programmable Radar Echo Simulator Based on PCI Bus
-
摘要: 针对目前雷达回波信号模拟器功能单一、信号回放速度低的问题,提出了采用计算机PCI总线式结构、高速FIFO和高速D/A的实现方案,使模拟器的数据更新速度达到8 MHz,信号回放速率达到73 MHz;采用FPGA技术,使系统参数程控可选,且可方便地改动其组成结构以适应不同类型的雷达.通过对合成孔径雷达(SAR,Synthetic Aperture Radar)回波信号的仿真输出,并经现场运行表明,该方案可行,样机运行可靠,满足对高分辨率图像的仿真要求.Abstract: To improve the performance of current radar echo signal simulators, a scheme was advanced with computer PCI bus-organization, high speed FIFO and D/A. With the realization of this scheme, the simulator exhibits a data updating speed as high as 8 MHz and a signal conversion speed as high as 73 MHz. The use of FPGA technology made the system parameters programmable and able to change its structure expediently to adapt different types of radar. Through signal simulation output of synthetic aperture radar, the scheme was proved to be feasible. The operation of a sample machine was shown to be reliable and able to meet the needs of high-resolution image simulation.
-
Key words:
- radar echo simulators /
- bus-organization /
- synthetic aperture radar /
- FPGA technology
-
[1] Mitchell R L. Radar signal simulation[M]. Massachusetts:Artech House, 1976 [2] Skolnik M I. Radar handbook(second edition)[M]. New York:MoGraw-Hill, 1990 [3] 任丽香,龙 腾.一种通用雷达信号模拟器的设计与实现[J]. 现代雷达, 1998,(6):52~58 Ren Lixiang, Long Teng. The design and realization of one currency radar signal simulator[J]. Modern Radar, 1998,(6):52~58(in Chinese) [4] 张澄波. 综合孔径雷达原理系统分析与应用[M]. 北京:科学出版社, 1989 Zhang Chengbo. The analysis and applications of synthetic aperture radar principle system[M]. Beijing:Science Press, 1989(in Chinese) [5] 黄智刚,柳重堪. 虚拟高速数据信号发生器的硬件实现[J]. 遥测遥控, 2001,(5):44~48 Huang Zhigang, Liu Zhongkan. The hardware realization of virtual high-speed data signal generator[J]. Journal of Telemetry Tracking and Command, 2001,(5):44~48(in Chinese) -
点击查看大图
计量
- 文章访问数: 3000
- HTML全文浏览量: 258
- PDF下载量: 986
- 被引次数: 0
下载:
