摘要
研究基于WiMAX信号的无源合成孔径雷达成像,即WiMAX-SAR成像,并给出了一种基于滤波反投影原理的成像方法。该方法利用环境中已有的WiMAX信号作为照射源,通过对接收机位于不同位置时所接收到的WiMAX回波信号进行滤波反投影,从而场景重建。仿真结果证明了基于FBP的WiMAX-SAR成像方法的可行性,且适用于任意接收机飞行轨迹。该方法也适用于基于其他照射源的双基SAR成像。
Passive radar can provide good electronic countermeasure performance, relieve the crowdness of frequency band usage and reduce the cost of the system, which leads to important applications. With regard to this, the passive synthetic aperture radar （SAR） imaging using WiMAX signals, i.e. WiMAX-SAR imaging, is studied. A filtered back projection （FBP） based imaging method is presented, which uses the WiMAX signal source as an illuminator, and the receiver carries out filtered back project of the echo signals that receive at different sampled location to reconstruct the scene. Simulation results show that the proposed WiMAX- SAR imaging method is effective and can be applied to arbitrary receiver flight traiectories. The proposed method is also suitable to the imaging of bistatic SAR using other illumination sources.
出处
《数据采集与处理》
CSCD
北大核心
2013年第4期404-409,共6页
Journal of Data Acquisition and Processing
基金
国家自然科学基金(61001151)资助项目
江苏高校优势学科建设工程资助项目
关键词
合成孔径雷达
无源雷达
WIMAX
滤波反投影
synthetic aperture radar （SAR）
passive radar
WiMAX
filtered back projection（FBP）
