High-Precision Motion Detection Using Low-Complexity Doppler Radar With Digital Post-Distortion Technique

Gu, Changzhan; Peng, Zhengyu; Li, Changzhi

doi:10.1109/tmtt.2016.2519881

Cited by 60 publications

(25 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This problem results in the fading of odd-order frequencies (including the desired fundamental frequency and accentuation of even-order harmonics. Using a quadrature Doppler radar transceiver alleviates this issue [4], [24], [25]. Fig.…”

Section: A Doppler Radar Sensormentioning

confidence: 99%

“…It can be seen that the Q channel has twice the frequency of the I channel. Also, the Q channel has a smaller amplitude which indicates that the Q channel is in the null mode and therefore even harmonics of the fundamental frequency are emphasized [24], [25], [30]. The goal of noncontact monitoring applications using a Doppler radar is to extract and recover useful information from a moving subject, mainly its movement frequency and amplitude.…”

Section: Test Setup and Measurementsmentioning

confidence: 99%

See 1 more Smart Citation

Effects of Antenna Characteristics on the Performance of Heart Rate Monitoring Radar Systems

Nosrati

Tavassolian

2017

IEEE Trans. Antennas Propagat.

View full text Add to dashboard Cite

This paper presents an experimental study to evaluate the effects of antenna radiation parameters on the detection capabilities of a 2.4 GHz Doppler radar used in non-contact heart rate monitoring systems. Four different types of patch antennas and array configurations were implemented on both the transmitter and receiver sides. Extensive experiments using a linear actuator were performed and several interesting and nontrivial results were reported. It is shown that using a linearly polarized single patch antenna at the transmitter and a circularly polarized antenna array at the receiver results in the highest signal quality and system performance. Proof-ofconcept experiments on human subjects further validated the suggested results. It was also shown that using the recommended antenna arrangement will boost the heart rate detection accuracy of the radar by an average of 11%.

show abstract

Section: A Doppler Radar Sensormentioning

confidence: 99%

Section: Test Setup and Measurementsmentioning

confidence: 99%

Effects of Antenna Characteristics on the Performance of Heart Rate Monitoring Radar Systems

Nosrati

Tavassolian

2017

IEEE Trans. Antennas Propagat.

View full text Add to dashboard Cite

show abstract

“…Research in the development of Doppler radar as a motion detection has been conducted [20,21]. An experiment and development of a 2.4 GHz Doppler radar system for detecting small-range motion was performed to overcome the resolution problem in PIR and ultrasonic sensor [20].…”

Section: Introductionmentioning

confidence: 99%

“…Phase data processing is commonly used in improving the resolution in motion detection. Several methods of handling a distortion that may occur in phase processing has also been studied [21]. Considering motion detection/interpretation purposes, this method potentially provides smaller data, and its operation is independent of light availability.…”

Section: Introductionmentioning

confidence: 99%

Time and Frequency Domain Feature Extraction Method of Doppler Radar for Hand Gesture Based Human to Machine Interface

Pramudita¹,

Lukas²,

Edwar³

2020

PIER C

View full text Add to dashboard Cite

In the development of hand gesture based Human to Machine Interface, Doppler response feature extraction method plays an important role in translating hand gesture of certain information. The Doppler response feature extraction method from hand gesture sign was proposed and designed by combining time and frequency domain analysis. The extraction of the Doppler response features at time domain is developed by using cross correlation, and the time domain feature is represented by using peak value of cross correlation result and its time shift. The Doppler response feature of frequency domain is extracted by employing a discriminator filter determined by the frequency spectrum observation of Doppler response. The proposed method was employed as a preprocessing for Continuous Wave (CW) radar output signals, which is able to relieve the pattern classification of Doppler response associated with each hand gesture. The simulation and laboratory experiment using HB 100 Doppler radar were performed to investigate the proposed method. The results show that the combination of all three features was capable of differentiating every type of hand gestures movement.

show abstract

“…Researchers later developed more advanced demodulation techniques including the complex demodulation [ 54 ] and the arctangent demodulation [ 55 ]. Other signal processing methods such as adaptive DC calibration [ 17 , 56 ], noise cancellation [ 57 ], distortion cancellation [ 58 ], and I / Q mismatch mitigation [ 59 , 60 ] have been proposed to make radar systems robust enough for practical applications. This paper reviews the recent technical advances in CW Doppler radar sensors for healthcare applications, including system hardware improvement, digital signal processing, and chip integration.…”

Section: Introductionmentioning

confidence: 99%

Short-Range Noncontact Sensors for Healthcare and Other Emerging Applications: A Review

2016

Sensors

Self Cite

View full text Add to dashboard Cite

Short-range noncontact sensors are capable of remotely detecting the precise movements of the subjects or wirelessly estimating the distance from the sensor to the subject. They find wide applications in our day lives such as noncontact vital sign detection of heart beat and respiration, sleep monitoring, occupancy sensing, and gesture sensing. In recent years, short-range noncontact sensors are attracting more and more efforts from both academia and industry due to their vast applications. Compared to other radar architectures such as pulse radar and frequency-modulated continuous-wave (FMCW) radar, Doppler radar is gaining more popularity in terms of system integration and low-power operation. This paper reviews the recent technical advances in Doppler radars for healthcare applications, including system hardware improvement, digital signal processing, and chip integration. This paper also discusses the hybrid FMCW-interferometry radars and the emerging applications and the future trends.

show abstract

High-Precision Motion Detection Using Low-Complexity Doppler Radar With Digital Post-Distortion Technique

Cited by 60 publications

References 34 publications

Effects of Antenna Characteristics on the Performance of Heart Rate Monitoring Radar Systems

Effects of Antenna Characteristics on the Performance of Heart Rate Monitoring Radar Systems

Time and Frequency Domain Feature Extraction Method of Doppler Radar for Hand Gesture Based Human to Machine Interface

Short-Range Noncontact Sensors for Healthcare and Other Emerging Applications: A Review

Contact Info

Product

Resources

About