摘要
介绍了一种X波段高分辨机载合成孔径雷达(SAR)接收系统的实验研究情况。该系统采用了直接正交解调接收体制和基于直接数字频率合成(DDS)的宽带波形产生。给出了其地面实验结果:当工作带宽为500MHz时,所得距离分辨率为0.3m,未加权距离副瓣为-25dB。
The experimental study on an X-band high resolution airborne SAR receiver is introduced indetail in this paper. Direct orthogonal demodulation receiving and wide band waveform generation based ondigital direct frequency synthesis (DDS) have been adopted in the SAR receiver system. The experiment re-sults on the ground are also provided: when its operation bandwidth is 500MHz, distance rcsolution is0.3m. distance side lobe without weighting is-25dB.
出处
《雷达科学与技术》
2003年第4期246-249,共4页
Radar Science and Technology
基金
"十五"国家"863"资助项目(2001AA132120)