摘要
提出了一种准单站模式雷达以步进频方式工作条件下微波三维全息成像算法,克服了传统成像算法要求远场条件的限制,通过对雷达接收目标回波数据进行合成孔径处理,提高了雷达成像的分辨力以及雷达对目标的探测能力.采用一种新的Stolt插值实现方法,提高插值精度、减少插值的计算时间,通过插值,可以利用快速傅里叶变换来实现目标三维图像的快速重构.给出了实验和模拟目标的三维图像重构结果,表明基于该插值方式的三维图像重构算法可以重构出目标的三维像,实现对目标的探测并具有良好的分辨率.
A fully 3-D image-reconstruction algorithm that quasi-monostatic mode is used and the transmitting antenna works in step frequency was developed. The algorithm is not restricted by far field as the traditional imaging algorithm. Through synthetic aperture processing for radar data, the resolutions of the image and the detecting ability of radar are improved. A new Stolt interpolation method interpolation and reduce computation time, was presented. 3-D image of the the fast Fourier transform after interpolation. Numerous imaging results from presented. These results show that the algorithm for 3-D image-reconstruction od can produce a microwave 3-D image with high resolutions. , which can increase accuracy of objects can be achieved through simulations and experiment were based on this interpolation method can produce a microwave 3-D image with high resolutions.
出处
《北京航空航天大学学报》
EI
CAS
CSCD
北大核心
2006年第7期815-818,共4页
Journal of Beijing University of Aeronautics and Astronautics
基金
教育部新世纪优秀人才支持计划资助项目
关键词
雷达
合成孔径
三维成像
Stoh插值
近场
radar
synthetic aperture
three-dimensional imaging
Stolt interpolation
near field