摘要
为了获得水平和垂直的多个相位中心信息,提出了一种新的卫星基线斜置并结合相位中心偏置天线(DPCA)技术的星载三通道合成孔径雷达地面运动目标检测方法.研究了基线斜置时的等效相位中心补偿函数,给出了在该情况下新的系统约束条件,并在此基础上分析了基线斜置角对检测盲速的影响.各通道完成相位补偿后,通过相位中心偏置天线技术实现地面运动目标检测,利用杂波抑制后的通道间干涉相位完成运动目标定位.仿真结果验证了基线斜置时该方法实现运动目标检测和定位的有效性.
In order to obtain a number of pieces of horizontal and vertical phase center information, a novel three-channel spaceborne SAR-GMTI is proposed, based on the slant-placed baseline and displaced phase center antenna. The compensation function for the equivalent phase center with the slant-placed baseline is analyzed. The new constraint of the system and the analysis of the blind velocity relative to the slant-placed antenna are also given. Displaced phase center antenna technology is presented for moving target detection and interferometry technology is applied for position after channel compensation. Finally, simulation results confirm the effectiveness of this method with the slant-placed baseline.
出处
《西安电子科技大学学报》
EI
CAS
CSCD
北大核心
2012年第3期14-19,26,共7页
Journal of Xidian University
基金
国家自然科学基金资助项目(60572146)
关键词
合成孔径雷达
运动目标检测
相位中心偏置天线
杂波抑制
干涉相位
synthetic aperture radar
moving target detection
displaced phase center antenna
clutter suppression
interferometric phase
