Design and Implementation of Wideband Exciter for an Ultra-high Resolution Airborne SAR System
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摘要: 针对分辨率优于0.1 m 的机载合成孔径雷达(SAR)系统,该文设计实现了中心频率14.8 GHz,带宽3.2 GHz的宽带线性调频(LFM)激励信号源。详细介绍了技术方案的选择,关键技术的实现,并对产生的宽带调频信号进行了详细的测试与分析。该信号源作为机载SAR 系统中子系统的一部分,完成了飞行试验,并获得了分辨率优于0.1m 的雷达图像,验证了该方案设计和技术实现的有效性。Abstract: We designed and implemented a wideband Linear Frequency Modulated (LFM) pulse compression exciter with 14.8 GHz carrier and 3.2 GHz bandwidth based on an ultra-high resolution airborne SAR system with a better than 0.1 m resolution. The selection of a signal generation scheme and some key technique points for wideband LFM waveform are presented in detail. Then, an acute test and analysis of the LFM signal are performed. The final airborne experiments demonstrate the validity of the LFM source, which is one of the subsystems in an ultra-high resolution airborne SAR system.
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Key words:
- Synthetic Aperture Radar (SAR) /
- Exciter /
- Wideband /
- Linear Frequency Modulation (LFM)
期刊类型引用(2)
1. 张云雷,李轲,卢建斌. 基于假设检验理论的统计分辨研究综述. 科学技术与工程. 2021(12): 4752-4759 . 百度学术
2. 张云雷,卢建斌,田树森,李厚朴. 基于假设检验的雷达近邻目标距离统计分辨限——幅度随机分布. 信号处理. 2020(10): 1735-1743 . 百度学术
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