Analysis of Frequency Measurement Performance of IFM Receiver in Complex Electromagnetic Environment
马月红 1曹佳琦 1韩壮志 2刘新悦1
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作者信息
1. 石家庄铁道大学 电气与电子工程学院,石家庄 050000
2. 陆军工程大学石家庄校区 电子与光学工程系,石家庄 050000
折叠
摘要
瞬时测频(Instantaneous Frequency Measuring,IFM)接收机因其良好的测频性能已成为国内外雷达侦察系统广泛应用的测频接收机.现有的IFM接收机理论是建立在窄带单频信号通过IFM接收机的基础上,当前关于IFM接收机在多路宽带复杂信号环境下独立的测频性能方面缺少研究.首先,从理论上推导了多路宽带复杂信号环境下的IFM接收机的输出,指出IFM接收机对单路宽带信号的测频精度较高,而在多路宽带复杂信号环境下IFM接收机测频结果会受到较大影响,因此,IFM接收机无法适应多路宽带复杂信号环境.
Abstract
Instantaneous frequency measuring(IFM)receivers have been widely used in radar re-connaissance systems at home and abroad because of their good frequency measuring perform-ance.The existing theory of IFM receiver is based on narrowband single frequency signal passing through IFM receiver.There is a lack of research on the independent frequency measurement performance of IFM receiver in multi-channel wideband complex signal environment.Firstly,the output of IFM receiver in multi-channel broadband complex signal environment is theoretically derived.It is pointed out that IFM receiver has a high frequency measurement accuracy for single channel broadband signal,while the frequency measurement results of IFM receiver in multi-channel complex signal environment will be greatly affected.Therefore,IFM receiver cannot a-dapt to multi-channel broadband complex signal environment.
关键词
IFM接收机/测频性能分析/复杂电磁环境/多路宽带复杂信号
Key words
IFM receiver/frequency measurement performance analysis/complex electromagnet-ic environment/multiplex broadband complex signal
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