分布式天基雷达系统的方向图合成

2001 IEEE Aerospace Conference Proceedings (Cat. No.01TH8542) Pub Date : 2001-03-10 DOI:10.1109/AERO.2001.931252

H. Steyskal, J. Schindler, P. Franchi, R. Mailloux

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引用次数: 18

摘要

TechSat21天基雷达采用一组自由浮动的卫星，每一颗卫星都发射自己的正交信号，并接收所有反射信号。这些卫星在x波段同步工作。该星团本质上是一个多元干涉仪，伴随有大量的光栅瓣和明显的地杂波。提出了一种在角频空间中进行方向图合成的新方法，该方法利用了光栅瓣在角域和雷达脉冲在频域的双周期性，从而获得了较好的杂波抑制效果。相对于正常的随机稀疏阵列，增益从7到17 dB似乎是可行的。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Pattern synthesis for TechSat21-a distributed spacebased radar system

The TechSat21 space-based radar employs a cluster of free-floating satellites, each of which transmits its own orthogonal signal and receives all reflected signals. The satellites operate coherently at X-band. The cluster forms essentially a multi-element interferometer with a concomitant large number of grating lobes and significant ground clutter. A novel technique for pattern synthesis in angle-frequency space is proposed, which exploits the double periodicities of the grating lobes in the angular domain and of the radar pulses in the frequency domain, and allows substantial gains in clutter suppression. Gains from 7 to 17 dB relative to the normal random, sparse array appear feasible.

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2001 IEEE Aerospace Conference Proceedings (Cat. No.01TH8542)

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