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Software defined radio for stepped-frequency, ground-penetrating radar

机译：步进频率，探地雷达的软件定义无线电

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摘要

Software defined radio (SDR) is a rapidly developing technology that implements signal processing components partially or completely in software. In this paper, SDR's potential as a platform for ground-penetrating radar (GPR) is explored. The stepped-frequency radar method is implemented using off-the-shelf SDR hardware and open-source software. SDR is typically designed for communications applications, so special consideration is necessary for remote sensing. Precisely timed commands achieve RF phase coherence as well as digital sample synchronization. A multi-tone digital signal takes advantage of instantaneous bandwidth, and a sequential tuning routine expands effective bandwidth to cover the 500-5000 MHz band. Initial design challenges are weighed against potential advantages of design flexibility and hardware versatility.
机译：软件无线电（SDR）是一项快速发展的技术，可以在软件中部分或完全实现信号处理组件。本文探讨了SDR作为探地雷达（GPR）平台的潜力。步进频率雷达方法是使用现成的SDR硬件和开源软件实现的。 SDR通常是为通信应用而设计的，因此遥感需要特别注意。精确定时的命令可实现RF相位相干性以及数字采样同步。多音调数字信号利用瞬时带宽，而顺序调谐程序可扩展有效带宽，以覆盖500-5000 MHz频带。权衡初始设计挑战与设计灵活性和硬件多功能性的潜在优势。

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