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首页> 外文期刊>Aerospace and Electronic Systems Magazine, IEEE >Multichannel synthetic aperture radar systems with a planar antenna for future spaceborne microwave remote sensing
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Multichannel synthetic aperture radar systems with a planar antenna for future spaceborne microwave remote sensing

机译：具有平面天线的多通道合成孔径雷达系统，用于未来的星载微波遥感

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Future spaceborne SAR missions will require complete and frequent coverage of the Earth with a reasonably high geometric resolution. To achieve this imaging capacity, multichannel SAR systems with a planar antenna will be widely adopted in the next generation spaceborne microwave remote sensing missions. However, the high data rate, the increased system complexity, the difficulty of multichannel signal processing, the heavy load, and the wide bandwidth downlink may hamper the demonstration of these imaging modes. With the rapid development of electronic engineering and digital signal processing, these problems will be well resolved. Furthermore, regarding the implementation complexity, multichannel SAR systems with a deployable reflector antenna seem to be a better alternative for HRWS imaging [17, 18]. However, the major drawback of the reflector antenna is the limited beam-steering capacity compared with a planar antenna, which will affect some of the remote sensing applications. Thus, multichannel SAR systems with a planar antenna rather than a reflector are more suitable for the higher geometric resolution, especially for the higher-carrier frequency (such as X-band).
机译：未来的星载SAR任务将需要以合理的高几何分辨率完整，频繁地覆盖地球。为了实现这种成像能力，下一代平面微波遥感任务将广泛采用带有平面天线的多通道SAR系统。但是，高数据速率，增加的系统复杂性，多通道信号处理的难度，繁重的负载以及下行链路的宽带带宽可能会妨碍这些成像模式的演示。随着电子工程和数字信号处理技术的飞速发展，这些问题将得到很好的解决。此外，关于实现的复杂性，具有可部署反射器天线的多通道SAR系统似乎是HRWS成像的更好替代方案[17，18]。但是，反射天线的主要缺点是与平面天线相比，波束控制能力有限，这会影响某些遥感应用。因此，具有平面天线而不是反射器的多通道SAR系统更适合于更高的几何分辨率，尤其是对于更高的载波频率（例如X波段）。

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