长春理工大学学报(自然科学版)
長春理工大學學報(自然科學版)
장춘리공대학학보(자연과학판)
JOURNAL OF CHANGCHUN UNIVERSITY OF SCIENCE AND TECHNOLOGY(NATURAL SCIENCE EDITION)
2014年
1期
68-71
,共4页
赵鑫%周飚%齐志宏%杨进华
趙鑫%週飚%齊誌宏%楊進華
조흠%주표%제지굉%양진화
逆合成孔径成像激光雷达%运动目标%成像算法%运动补偿
逆閤成孔徑成像激光雷達%運動目標%成像算法%運動補償
역합성공경성상격광뢰체%운동목표%성상산법%운동보상
inverse synthetic aperture imaging laser radar%moving target%imaging algorithm%movement compensate
逆合成孔径激光雷达是主动式有源成像雷达,能够实现高速运动物体的实时高分辨成像。但传统R-D算法很难得到目标的二维高分辨图像。提出一种适合逆合成孔径激光雷达成像的算法,通过时频分析法分析逆合成孔径激光雷达的回波信号特征,对光外差探测后的回波信号进行重排Wigner分布和Radon变换的处理,估计出目标的运动速度,通过构造有效的补偿因子,实现对目标的二维高分辨率成像。通过仿真实验得到了分辨率更高的图像,验证了此方法的有效性。
逆閤成孔徑激光雷達是主動式有源成像雷達,能夠實現高速運動物體的實時高分辨成像。但傳統R-D算法很難得到目標的二維高分辨圖像。提齣一種適閤逆閤成孔徑激光雷達成像的算法,通過時頻分析法分析逆閤成孔徑激光雷達的迴波信號特徵,對光外差探測後的迴波信號進行重排Wigner分佈和Radon變換的處理,估計齣目標的運動速度,通過構造有效的補償因子,實現對目標的二維高分辨率成像。通過倣真實驗得到瞭分辨率更高的圖像,驗證瞭此方法的有效性。
역합성공경격광뢰체시주동식유원성상뢰체,능구실현고속운동물체적실시고분변성상。단전통R-D산법흔난득도목표적이유고분변도상。제출일충괄합역합성공경격광뢰체성상적산법,통과시빈분석법분석역합성공경격광뢰체적회파신호특정,대광외차탐측후적회파신호진행중배Wigner분포화Radon변환적처리,고계출목표적운동속도,통과구조유효적보상인자,실현대목표적이유고분변솔성상。통과방진실험득도료분변솔경고적도상,험증료차방법적유효성。
Inverse synthetic aperture laser radar is an active imaging radar; and the real-time imaging of moving target can be achieved in ultra-high resolution. Two-dimensional high-resolution images can’t be obtained by the traditional R-D algorithms. An Imaging algorithm for Inverse synthetic aperture laser radar is proposed in this paper. Characteris-tics of the echo signals are analyzed through the form of time-frequency analysis,then Wigner distribution and the Ra-don transform of detected echo signals are reset. After that, the speed of the moving target is estimated and through constructing an effective compensation factor, two-dimensional high-resolution imaging of the moving target are real-ized. High-resolution images are obtained by the simulation experiment and the effectiveness of this method is proved.