宽带循环MUSIC

Wideband Cyclic MUSIC

通信信号一般具有循环平稳性,利用信号的这种特性,循环MUSIC算法对于循环相关信号有很强的抑制干扰和噪声的能力,并且能够根据不同的循环频率来分离不同的信号,使其具有信号选择能力。但这种算法仅对窄带信号有效。通过对宽带信号测向算法的研究,提出了一种能够用于宽带循环信号测向的宽带循环MUSIC算法,利用信号的循环相关,使测向性能充分提高。经过计算机仿真,证实这种算法对于强干扰条件下的宽带测向有很好的效果。

High-resolution direction of arrival （DOA） estimates of cyclostationary signals in an environment with many more interferers than sensors is made possible using techniques like Cyclic MUSIC and variants. However, these techniques are only valid for narrowband signals. While signal-selective time difference of arrival （TDOA） estimation techniques for wideband cyclostationary signals have been proposed, these techniques cannot resolve closely spaced signals. This paper presents a high resolution signal-selective DOA estimation technique, called Wideband Cyclic MUSIC, which is effective against multiple wideband cyclostationary signals in interference.