频率源频谱特性对主动雷达导引头接收系统的影响

• 作 者: 张龙 马向峰
• 机 构: 中国空空导弹研究院,航空制导武器航空科技重点实验室,
• 出 处: 战术导弹技术
• 发表日期: 2015年03期
• 关键词: 雷达导引头 频率源 接收系统 相位噪声 本振信号 非理想因素 相噪 频率合成技术 接收性能 信号频率

目标的隐身特性和复杂电磁背景,要求空空导弹雷达导引头频率源具有更低的相位噪声和杂散。首先在对频率源相位噪声、杂散等关键特性分析的基础上,根据主动雷达导引头工作原理,分别论述了本振信号及发射信号的相位噪声、杂散等频域非理想因素对接收系统的影响。为降低上述因素带来的接收性能恶化,给出了工程中通常采用的几种解决措施。

The target’s stealth characteristics and complex electromagnetic background require that the air-to-air missile radar seeker frequency source have lower phase noise and spurs. Firstly, based on the analysis of the key characteristics such as phase noise and spur of the frequency source, according to the working principle of the active radar seeker, the phase noise of the local oscillator signal and the transmitted signal, the non-ideal factors such as spurious, System impact. In order to reduce the deterioration of receiving performance caused by the above factors, several solutions commonly adopted in the project are given.