宽带多通道接收机中基于处理的调谐器增益校正

M. Saville, Kenneth M. Monroe, C. Allen, Rick Martin
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引用次数: 2

摘要

现代雷达系统通常利用接收器前端的先进射频组件,包括宽带调谐器和放大器,高度稳定的本地振荡器和高速模数转换器。然而,技术演示者经常强调硬件或处理算法,而不是端到端系统。本文介绍了宽带多通道阵列调谐器增益失配的硬件特性及相应的信号处理校准模型。经验发现增益模型遵循t分布,并用于平衡调谐器之间的幅度,作为时频波束形成处理的一部分。相位也是完全纠正相位失配的关键因素。在这里,我们详细介绍了宽带接收器前端和信号处理后端。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Processing-based tuner gain correction in a wideband multi-channel receiver
Modern radar systems often capitalize on advanced radio frequency components in the receiver front end to include wideband tuners and amplifiers, highly stable local oscillators, and high-speed analog-to-digital converters. Yet, technology demonstrators often emphasize either the hardware or the processing algorithm rather than the end-to-end system. This paper presents the hardware characterization of tuner-gain mismatch in a wideband multi-channel array and the subsequent signal processing calibration model. The gain model is empirically found to follow a T-distribution and is used to balance the amplitude across the tuners as part of the processing for time-frequency-beamforming. Phase is also shown to be the critical factor to completely correcting phase mismatch. Here, we present details of the wideband receiver front-end and the signal processing backend.
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