Search Results - "Changzhan Gu"

Short-Range Noncontact Sensors for Healthcare and Other Emerging Applications: A Review by Gu, Changzhan

“…Short-range noncontact sensors are capable of remotely detecting the precise movements of the subjects or wirelessly estimating the distance from the sensor to…”
Get full text

A Hybrid FMCW-Interferometry Radar for Indoor Precise Positioning and Versatile Life Activity Monitoring by Guochao Wang, Changzhan Gu, Inoue, Takao, Changzhi Li

“…This paper presents a hybrid radar system that incorporates a linear frequency-modulated continuous-wave (FMCW) mode and an interferometry mode for indoor…”
Get full text

Assessment of human respiration patterns via noncontact sensing using Doppler multi-radar system by Gu, Changzhan, Li, Changzhi

“…Human respiratory patterns at chest and abdomen are associated with both physical and emotional states. Accurate measurement of the respiratory patterns…”
Get full text

High-Precision Motion Detection Using Low-Complexity Doppler Radar With Digital Post-Distortion Technique by Gu, Changzhan, Peng, Zhengyu, Li, Changzhi

“…Owing to the low complexity and high level of system integration, the quadrature direct-conversion architecture is widely used in Doppler radar for noncontact…”
Get full text

Differential Enhancement Method for Robust and Accurate Heart Rate Monitoring via Microwave Vital Sign Sensing by Xiong, Yuyong, Peng, Zhike, Gu, Changzhan, Li, Songxu, Wang, Dong, Zhang, Wenming

“…Noncontact vital sign detection based on microwave sensing has attracted much interest for its important application potential in many fields, especially in…”
Get full text

A Hybrid Radar-Camera Sensing System With Phase Compensation for Random Body Movement Cancellation in Doppler Vital Sign Detection by Changzhan Gu, Guochao Wang, Yiran Li, Inoue, Takao, Changzhi Li

“…This paper presents a Doppler radar vital sign detection system with random body movement cancellation (RBMC) technique based on adaptive phase compensation…”
Get full text

Application of Linear-Frequency-Modulated Continuous-Wave (LFMCW) Radars for Tracking of Vital Signs by Wang, Guochao, Munoz-Ferreras, Jose-Maria, Gu, Changzhan, Li, Changzhi, Gomez-Garcia, Roberto

“…This paper focuses on the exploitation of linear-frequency-modulated continuous-wave (LFMCW) radars for noncontact range tracking of vital signs, e.g.,…”
Get full text

Miniaturized Circularly Polarized Doppler Radar for Human Vital Sign Detection by He, Yuchu, Gu, Changzhan, Ma, Haijiang, Zhu, Jiang, Eleftheriades, George V.

“…In this paper, a miniaturized circularly polarized (CP) continuous wave Doppler radar system operating at 2.4 GHz is presented. The radar front end consists of…”
Get full text

mmWave Spatial-Temporal Single Harmonic Switching Transmitter Arrays for High Back-Off Beamforming Efficiency by Yu, Zhehao, Lu, Xuyang, Gu, Changzhan, Venkatesh, Suresh, Mao, Junfa

“…This article presents a spatial-temporal single harmonic switching (STHS) transmitter array architecture with enhanced efficiency in the power back-off (PBO)…”
Get full text

A Two-Tone Radar Sensor for Concurrent Detection of Absolute Distance and Relative Movement for Gesture Sensing by Changzhan Gu, Lien, Jaime

“…This letter presents a two-tone radar sensor system that can concurrently detect both absolute distance and relative movement. In contrast to the traditional…”
Get full text

Automated DC Offset Calibration Strategy for Structural Health Monitoring Based on Portable CW Radar Sensor by Shanyue Guan, Rice, Jennifer A., Changzhi Li, Changzhan Gu

“…This paper introduces a strategy for automatically selecting dc offset calibration methods on a 2.4-GHz continuous wave (CW) radar sensor, which measures…”
Get full text

SleepSense: A Noncontact and Cost-Effective Sleep Monitoring System by Lin, Feng, Zhuang, Yan, Song, Chen, Wang, Aosen, Li, Yiran, Gu, Changzhan, Li, Changzhi, Xu, Wenyao

“…Quality of sleep is an important indicator of health and well being. Recent developments in the field of in-home sleep monitoring have the potential to enhance…”
Get full text

Instrument-Based Noncontact Doppler Radar Vital Sign Detection System Using Heterodyne Digital Quadrature Demodulation Architecture by Gu, Changzhan, Li, Changzhi, Lin, Jenshan, Long, Jiang, Huangfu, Jiangtao, Ran, Lixin

“…In this paper, we present a fast solution to build a Doppler radar system for noncontact vital sign detection (VSD) using instruments that are generally…”
Get full text

Accurate Respiration Measurement Using DC-Coupled Continuous-Wave Radar Sensor for Motion-Adaptive Cancer Radiotherapy by Gu, Changzhan, Li, Ruijiang, Zhang, Hualiang, Fung, Albert Y. C., Torres, Carlos, Jiang, Steve B, Li, Changzhi

“…Accurate respiration measurement is crucial in motion-adaptive cancer radiotherapy. Conventional methods for respiration measurement are undesirable because…”
Get full text

A Self-Calibrating Radar Sensor System for Measuring Vital Signs by Ming-Chun Huang, Liu, Jason J., Wenyao Xu, Changzhan Gu, Changzhi Li, Sarrafzadeh, Majid

“…Vital signs (i.e., heartbeat and respiration) are crucial physiological signals that are useful in numerous medical applications. The process of measuring…”
Get full text

Bandwidth Enhancement of H-Plane MIMO Patch Antennas in Integrated Sensing and Communication Applications by Ma, Lina, Shao, Zijian, Lai, Jun, Gu, Changzhan, Mao, Junfa

“…In this paper, a low-cost compact decoupled bandwidth enhancement technique is proposed to address the high mutual coupling issue between wideband…”
Get full text

Millimeter-Wave Bat for Mapping and Quantifying Micromotions in Full Field of View by Xiong, Yuyong, Li, Songxu, Gu, Changzhan, Meng, Guang, Peng, Zhike

“…Echolocating bats possess remarkable capability of multitarget spatial localization and micromotion sensing in a full field of view (FFOV) even in cluttered…”
Get full text

Doppler Radar Motion Sensor With CMOS Digital DC-Tuning VGA and Inverter-Based Sigma-Delta Modulator by Yihong Yang, Changzhan Gu, Yiran Li, Gale, Richard, Changzhi Li

“…In most of the traditional miniature Doppler radar systems, ac coupling is adopted between the radio frequency front-end and baseband amplifier to block the dc…”
Get full text

A Review on Recent Advancements of Biomedical Radar for Clinical Applications by Dong, Shuqin, Wen, Li, Ye, Yangtao, Zhang, Zhi, Wang, Yi, Liu, Zhiwei, Cao, Qing, Xu, Yuchen, Li, Changzhi, Gu, Changzhan

“…The field of biomedical radar has witnessed significant advancements in recent years, paving the way for innovative and transformative applications in clinical…”
Get full text

Hybrid FMCW-interferometry radar system in the 5.8 GHz ISM band for indoor precise position and motion detection by Guochao Wang, Changzhan Gu, Inoue, Takao, Changzhi Li

“…A hybrid FMCW-interferometry radar sensor is presented. The proposed measurement system incorporates the linear frequency-modulated continuous-wave (FMCW) mode…”
Get full text