【摘要】 分布式相参射频探测系统要求对信号进行长时间积累。信号长时间积累带来的问题主要有跨距离单元走动、跨多普勒单元走动、跨波束走动以及由目标姿态角变化造成的回波散射矢量变化大等,使得信号积累效果变差。概述了分布式相参射频探测系统的产生背景、概念和面临的信号长时间积累问题,以及信号长时间积累方法、研究现状等,详细探讨了信号长时间积累的研究方向。更多还原

【Abstract】 Distributed coherent RF detection system( DCRFDS) requires long-time signal integration.However,long-time signal integration brings problems such as range migration,Doppler migration,beam migration,and the change of echo scattering vector mainly caused by the change of target attitude angle,all which will lead to a worse result of signal integration. The background,concept,long-time signal integration problem,and methods and research status of long-time signal integration of DCRFDS are introduced. Also,the research direction in long-time integration field is discussed in detail.更多还原