RFI Mitigation for One-Bit UWB Radar Systems
RFI Mitigation for One-Bit UWB Radar Systems
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DOI：
10.1109/ieeeconf44664.2019.9048982
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发表时间：
2019-11
期刊：
影响因子：
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通讯作者：
Tianyi Zhang;Jiaying Ren;Christopher Gianelli;Jian Li
中科院分区：
文献类型：
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作者：
Tianyi Zhang;Jiaying Ren;Christopher Gianelli;Jian Li
射频干扰（RFI）抑制是超宽带（UWB）雷达系统正常工作的关键。本文考虑了一位UWB雷达系统的RFI抑制，其测量值通过低成本和高速率的采样策略使用随慢时间变化的已知阈值获得。我们首先建立了RFI源的数据模型。然后，我们提出了一种基于松弛算法估计的参数的RFI源的有符号的测量和阈值。接下来，引入一种稀疏方法来使用估计的RFI参数恢复所需的UWB雷达回波。最后，数值例子来证明所提出的方法的有效性。
Radio frequency interference (RFI) mitigation is critical to the proper operation of ultra-wideband (UWB) radar systems. This paper considers RFI mitigation for a one-bit UWB radar system, with its measurements obtained via a low-cost and high-rate sampling strategy using a known threshold varying with slow-time. We first establish a data model for the RFI sources. Then we present a relaxation based algorithm to estimate the parameters of the RFI sources from the signed measurements and thresholds. Next, a sparse method is introduced to recover the desired UWB radar echoes using the estimated RFI parameters. Finally, numerical examples are presented to demonstrate the effectiveness of the proposed method.