| 软件化多频地波雷达频率合成器设计 |
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| 引用本文： | 王勤,万显荣,杨子杰.软件化多频地波雷达频率合成器设计[J].系统工程与电子技术,2009,31(5):1060-1063. |
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| 作者姓名： | 王勤 万显荣 杨子杰 |
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| 作者单位： | 武汉大学电波传播实验室, 湖北, 武汉, 430079 |
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| 基金项目： | 国家自然科学基金，国家高技术研究发展计划(863计划) |
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| 摘 要： | 针对高频地波雷达海洋动力学参数多频探测的技术特点,提出了一种基于波形库的软件化多频地波雷达频率合成器实现方案,可以同时和分时产生多路脉内线性调频信号,各路信号形式、频率、初相、幅度等都独立可控,解决了雷达波形种类、幅相控制、捷变时间受限等问题,较大提高雷达系统性能;给出系统的硬软件实现方案.测试结果表明,该数字频率源的相位噪声在偏离载波1 kHz处达-112 dBc/Hz,满足高频地波雷达进行长时间相干积累对频率源稳定性的要求.
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| 关 键 词： | 高频地波雷达 频率合成器 软件无线电 多频雷达 |
| 收稿时间： | 2008-04-28 |
| 修稿时间： | 2008-07-25 |
Software-defined frequency synthesizer for multi-frequency HF surface wave radar |
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| WANG Qin,WAN Xian-rong,YANG Zi-jie.Software-defined frequency synthesizer for multi-frequency HF surface wave radar[J].System Engineering and Electronics,2009,31(5):1060-1063. |
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| Authors: | WANG Qin WAN Xian-rong YANG Zi-jie |
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| Institution: | Lab. of Radio Transmission, Wuhan Univ., Wuhan 430079, China |
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| Abstract: | A frequency synthesizer based on the waveform database for software defined multi-frequency surface wave sea-state remote sensing radar is presented.It can generate multiple pulsed frequency modulated continuous wave simultaneously or time-dividually,and the waveform,carrier frequency,initial phase and amplitude of which can be controlled independently.The performance of radar systems is improved greatly in the waveform types,amplitude and phase control,and frequency hopping time etc.The hardware and software structure is presented.Experimental results show that the phase noise of the frequency synthesizer is about-112 dBc/Hz at 1 kHz offset,which meets the stability demands of an HF surface wave radar for long coherent integration time. |
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