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揭示了时间反转技术的本质,指出时反不仅是一个物理过程,更是一种信号处理方法,进而提出“时反波束形成”的概念。针对时反空时聚焦特性受到环境不确实性限制的问题,研究了用模型探查源(MS)代替实探查源(PS)的发射时反波束形成实现发射聚焦,以及用对角线加载的宽容性MVDR接收时反波束形成实现接收聚焦,并最后用于目标检测。水池实验的结果表明了该发射聚焦和接收聚焦在不确实环境下用于目标检测及其距离估计的有效性。
Revealed the essence of time reversal technology, pointed out that time reversal is not only a physical process, but also a signal processing method, and then put forward the “reverse beamforming ” concept. Aiming at the problem that the focusing property is limited by the environment uncertainty at the time of anti-space, the focus of the anti-beamforming by using the model search source (MS) instead of the real probing source (PS) is studied, and the tolerance of loading with the diagonal Reverse Beamforming is achieved on the reception of the sexual MVDR to achieve reception focusing and finally for target detection. The results of the pool experiments show the effectiveness of the launch focus and the receive focus for target detection and its distance estimation in an unrealistic environment.