摘要
研究了大型宽带相控阵雷达相参工作所遇到的2个技术难点:克服孔径渡越时间,使雷达在发射时波束在空间相参合成,在接收时所有阵元收到的信号能量相参迭加;以及在宽窄交替工作方式下,克服窄带引导宽带的参考延时随机抖动,实现脉间相参处理。文中针对对这2个问题进行了分析,综述了大阵面天线波束发射补偿和脉间相参处理的研究现状和各种可能的技术途径,并在此基础上进行了有益的探索。
Two technical difficulties in making wideband phased array radar work coherently are studied in this paper. Resolve the re- striction of the aperture traverse delay, and accomplish beamforming in space when transmitting the signal. Accumulate the energy of signals achieved by all array elements when receiving. Eliminate random jitter in delay of reference signal and make echos coherent in different cycles. This paper analyzes these problems, summarizes the status quo of beam-forming and coherent signal processing in big antenna array and the possible way to solve this problem. Some useful researches are investigated based on this foundation.
出处
《现代雷达》
CSCD
北大核心
2011年第2期42-46,共5页
Modern Radar
关键词
相参
波束发散
数字延时
线性调频
相位补偿
coherent
dispersion effect
digital time delay
LFM
phase compensation
