Mitigation of stationary clutter in vital-sign-monitoring linear-frequency-modulated continuous-wave radars

被引：14

作者：

Munoz-Ferreras, Jose-Maria ^{[1
]}

Wang, Guochao ^{[2
]}

Li, Changzhi ^{[2
]}

Gomez-Garcia, Roberto ^{[1
]}

机构：

[1] Univ Alcala UAH, Dept Signal Theory & Commun, Alcala De Henares 28871, Spain

[2] Texas Tech Univ, Dept Elect & Comp Engn, Lubbock, TX 79409 USA

来源：

IET RADAR SONAR AND NAVIGATION | 2015年 / 9卷 / 02期

基金：

美国国家科学基金会;

关键词：

CW radar; FM radar; high-pass filters; frequency modulation; stationary clutter; vital-sign monitoring; pure linear-frequency-modulated continuous-wave radars; phase based range precision; advantageous range-isolation capability; healthcare LFMCW radars; Doppler high-pass filtering technique; clutter-mitigation procedure; DOPPLER RADAR; RESPIRATION; MOTION; HEARTBEAT; SENSOR; SYSTEM;

D O I：

10.1049/iet-rsn.2014.0106

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Stationary clutter can seriously degrade the performance of radar sensors. In the specific context of vital-sign monitoring, this deterioration can lead to the impossibility of tracking the desired motions. Pure linear-frequency-modulated continuous-wave (LFMCW) radars have arisen as an interesting solution to monitor vital signs, featuring both an increased phase-based range precision and an advantageous range-isolation capability. In this study, the impact of clutter on healthcare LFMCW radars is mathematically analysed and a Doppler high-pass filtering technique is proposed for its suppression. Simulation results are provided to highlight the key aspects of the derived mathematical framework and associated Doppler processing. Real experiments are also conducted to prove the validity of the devised clutter-mitigation procedure.

引用

页码：138 / 144

页数：7