矢量调制在相干多通道信号发生中的应用研究

Research of application for vector modulation in the phase-coherent multichannel signal generation

对基于相干体制的多通道电子系统如MIMO通信、相控阵雷达、多通道侦察接收机等进行性能评估与测试一直是一个复杂、昂贵的过程,因为难以产生符合测试要求的多路相干信号。提出了一种基于矢量调制技术的宽频带相干多通道信号发生方法,分析了矢量调制器的非理想特性对多通道相干信号发生的影响,给出了解决思路。该方法具有频率覆盖范围宽、相位控制范围大、精度高、调节分辨率精细等优点,为基于相干体制的多通道接收机测试提供了一种高效便捷的信号模拟方法。

The performance evaluation and testing for coherent principle based multi-channel electronic systems such as MIMO communication,and phased-array radar and multi-channel reconnaissance receiver have always been complicated and expensive.Because the multi-channel signals can be received is hard to stimulate.This paper presents a wide band phase-coherent multi-channel signal stimulating method based on vector modulation technique,analyzes the influences of the vector modulator＇s non ideal characteristics on multi-channel signals,and finally gives solutions.We propose a convenient and efficient simulation way for phase-coherent multi-channel receiver testing by stimulating signals of wider frequency covering range,larger phase control range,higher precision and finer resolution.