将数字调制纳入生命信号检测和使用多模雷达系统的手势识别中
Michael C Brown1, Changzhi Li1
1Department of Electrical and Computer Engineering, Texas Tech University, Lubbock, TX 79409, USA.
Sensors (Basel, Switzerland)
|September 28, 2023
概括
本研究介绍了一种可重新配置的相调制连续波 (PMCW) 雷达,使用数字调制来检测生命体征和手势识别. 数字PMCW雷达展示了连续波 (CW) 和PMCW模式之间的有效区分,用于人类呼吸和手势检测.
科学领域:
- 电气工程和计算机科学
- 生物医学工程 生物医学工程
- 信号处理 信号处理
背景情况:
- 越来越多的雷达应用需要新的解决方案,以在拥挤,低噪音的环境中运行.
- 数字系统的进步使更高的速度和新的雷达设计可能性成为可能.
- 数字控制的阶段调制连续波 (PMCW) 雷达在集体系统中提供了减少雷达-雷达干扰的潜力.
研究的目的:
- 提出一个可重新配置的PMCW雷达系统,利用数字载波调制.
- 评估雷达对生命信号检测和手势识别的能力.
- 在拟议的雷达系统中比较各种调制方案的性能.
主要方法:
- 开发一个可重新配置的PMCW雷达系统,采用数字调制.
- 使用现场可编程门阵列 (FPGA) 在载波上实现二进制相调制.
- 连续波 (CW) 和PMCW模式的实验比较,用于生命体征和手势检测.
主要成果:
- 拟议的数字PMCW雷达系统成功地展示了调制速度和序列的灵活性.
- 实验结果清楚地区分了CW和PMCW雷达响应,用于测量人类呼吸速率.
- 该系统在使用相调节检测人类手势方面表现出有效性.
结论:
- 可重新配置的数字PMCW雷达是复杂环境中需要高性能应用的可行解决方案.
- 数字调制技术,特别是相调制技术,增强了用于敏感检测任务的雷达能力.
- 拟议的系统提供了一个灵活而有效的平台,用于生命体征和手势识别.
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