本文为美国俄亥俄州立大学（作者：Christine Ann Bryant）的硕士论文，共97页。

本文研究了在单接收机数据速率有限的情况下，实现多输入单输出（MISO）合成孔径雷达（SAR）空时自适应处理（STAP）系统的可行性。MISO-SAR系统可以为雷达系统提供更大的处理灵活性，例如空军研究实验室开发的Gotcha雷达系统。Gotcha是一种机载宽波束多模式雷达系统，用于覆盖大面积的监视。为了实时地对大量数据应用多种算法，采集的数据被下载到地面的一台超级计算机上。STAP是一种自适应滤波技术，可用于在杂波存在的情况下提高对慢动目标的检测。但是，STAP通常是使用一组接收阵列单元来实现的，这会显著提高雷达向地面站传输的数据速率。虽然MISO系统在通信应用中很常见，但它并不是一种常见的雷达系统设计方法。MISO系统需要额外的波形设计考虑，以获得正交发射波形。然而，MISO系统提供了在保持单接收机数据速率的同时，还能够应用STAP所需的额外空间自由度。

This thesis investigates the plausibilityof implementing a multiple-input singleoutput (MISO) synthetic aperture radar(SAR) system for space-time adaptive processing (STAP) with a limited data raterequirement of a single receiver. A MISOSAR system could provide processingflexibility to radar systems such as the Gotcha radar system developed at theAir Force Research Laboratory. Gotcha is an airborne wide-beam multi-mode radarsystem used to cover a large area for surveillance. In order to apply multiplealgorithms to a large amount of data in real time, the data is downlinked to asupercomputer on the ground. STAP is an adaptive filtering technique which canbe used for improved detection of slow moving targets in the presence ofclutter. However, STAP is typically implemented using an array of receiving elements,which significantly increases the data rate for downlinking to the ground. WhileMISO systems are common in communications applications, it is not a commonradar system design approach. The MISO system requires additional waveform designconsiderations in order to obtain orthogonal transmit waveforms. However, theMISO system provides the additional degrees of freedom needed to apply STAP whilemaintaining a single receiver data rate.

1 研究动机

2 技术背景

2.1 合成孔径雷达

2.2 空时自适应处理

3 多输入单输出系统的实现

3.1 波形设计

3.2 MISO波形的正交设计

3.3 MISO系统的SAR处理

3.4 MISO系统的STAP处理

3.5 Gotcha雷达系统的MISO系统仿真

4 多输入单输出系统的实验结果

4.1 MISO SAR

4.2 MISO STAP

5 结论

5.1 未来研究工作展望

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