A linear IR-UWB MIMO radar array

Dooghabadi, Malihe Zarre; Hjortland, Håkon A.; Lande, Tor Sverre

doi:10.1109/icuwb.2013.6663814

Cited by 2 publications

(1 citation statement)

References 14 publications

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“…Many radar systems such as pulsed radar [1], ultra-wideband (UWB) radar [2,3], random noise radar [4], and multiple input multiple output (MIMO) radar [5] require timing generator circuits to make timing adjustment. Programmable delay line (PDL) is often being applied as a high precision timing circuitry to introduce both coarse and fine delays.…”

Section: Introductionmentioning

confidence: 99%

An FPGA-Integrated Time-to-Digital Converter Based on a Ring Oscillator for Programmable Delay Line Resolution Measurement

Chen

Meng

Xia

et al. 2014

Journal of Electrical and Computer Engineering

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We describe the architecture of a time-to-digital converter (TDC), specially intended to measure the delay resolution of a programmable delay line (PDL). The configuration, which consists of a ring oscillator, a frequency divider (FD), and a period measurement circuit (PMC), is implemented in a field programmable gate array (FPGA) device. The ring oscillator realized in loop containing a PDL and a look-up table (LUT) generates periodic oscillatory pulses. The FD amplifies the oscillatory period from nanosecond range to microsecond range. The time-to-digital conversion is based on counting the number of clock cycles between two consecutive pulses of the FD by the PMC. Experiments have been conducted to verify the performance of the TDC. The achieved relative errors for four PDLs are within 0.50%–1.21% and the TDC has an equivalent resolution of about 0.4 ps.

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Section: Introductionmentioning

confidence: 99%

An FPGA-Integrated Time-to-Digital Converter Based on a Ring Oscillator for Programmable Delay Line Resolution Measurement

Chen

Meng

Xia

et al. 2014

Journal of Electrical and Computer Engineering

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A Non-Contact Detection Method for Multi-Person Vital Signs Based on IR-UWB Radar

Dang

Zhang

Hao

2022

Sensors

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With the vigorous development of ubiquitous sensing technology, an increasing number of scholars pay attention to non-contact vital signs (e.g., Respiration Rate (RR) and Heart Rate (HR)) detection for physical health. Since Impulse Radio Ultra-Wide Band (IR-UWB) technology has good characteristics, such as non-invasive, high penetration, accurate ranging, low power, and low cost, it makes the technology more suitable for non-contact vital signs detection. Therefore, a non-contact multi-human vital signs detection method based on IR-UWB radar is proposed in this paper. By using this technique, the realm of multi-target detection is opened up to even more targets for subjects than the more conventional single target. We used an optimized algorithm CIR-SS based on the channel impulse response (CIR) smoothing spline method to solve the problem that existing algorithms cannot effectively separate and extract respiratory and heartbeat signals. Also in our study, the effectiveness of the algorithm was analyzed using the Bland–Altman consistency analysis statistical method with the algorithm’s respiratory and heart rate estimation errors of 5.14% and 4.87%, respectively, indicating a high accuracy and precision. The experimental results showed that our proposed method provides a highly accurate, easy-to-implement, and highly robust solution in the field of non-contact multi-person vital signs detection.

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A linear IR-UWB MIMO radar array

Cited by 2 publications

References 14 publications

An FPGA-Integrated Time-to-Digital Converter Based on a Ring Oscillator for Programmable Delay Line Resolution Measurement

An FPGA-Integrated Time-to-Digital Converter Based on a Ring Oscillator for Programmable Delay Line Resolution Measurement

A Non-Contact Detection Method for Multi-Person Vital Signs Based on IR-UWB Radar

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