【摘要】 介绍一种利用调制扫描法实现波束快速扫描并实现聚焦成像的新技术。采用数字技术产生调制所需的多个同步锁相振荡。在此基础上,进一步形成近场聚焦时各阵元应补偿的不同相移,实现动态聚焦;建立了硬件实验系统,并在水池进行了试验,结果令人满意。更多还原

【Abstract】 A new technque to realize rapid beamscanning and focused imaging by using modulation scanning method is presented. The digital technique is employed to generate the multiple synchronized and phase-locked generations required for modulation. Based on the method, the diferent phase shifts at each element needed for focusing in near field are performed to realize dynamic focusing. Some experimental results using a built hardware system are also given.更多还原