X-Band Demonstrator for Receive-only Frontend with Digital Beamforming
X-Band Demonstrator for Receive-only Frontend with Digital Beamforming
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发表时间：
2010-06
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通讯作者：
C. Schaefer;C. Heer;M. Ludwig
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作者：
C. Schaefer;C. Heer;M. Ludwig
一项技术演示表明，X波段接收时扫描（SCORE）原则是可行的，这是未来高分辨率宽测绘带（HRWS）合成孔径雷达仪器所需要的。根据欧空局的合同，已经设计、制造和测试了一个硬件演示器。5通道演示器具有零差下变频、早期数字化和数字波束形成（DBF）功能。数字波束形成是实时进行的，并已成功地证明在消声室。实现的性能报告，包括接收链噪声系数，SNR波束形成增益和直流功耗。
A technology demonstration has shown feasibility of the scan-on-receive (SCORE) principle in X-band, required for future High-Resolution Wide-Swath (HRWS) SAR instruments. Under ESA contract, a hardware demonstrator has been designed, built and tested. The 5-channel demonstrator features homodyne downconversion, early digitization, and digital beamforming (DBF). Digital beamforming is performed in real-time and has successfully been demonstrated in the anechoic chamber. Achieved performances are reported, including receive chain noise figure, SNR beamforming gain and DC power consumption.