Radar · Biomedical Signal Processing

FMCW Radar Cardiac Timing

Aligns ECG, SCG, and non-contact FMCW radar on a beat-relative axis and analyzes morphology-based AO/AC candidate timing.

Analysis source and real hardware

⌘ Repository ↗ Project Page

Problem

The project analyzes AO/AC-related candidate timings in non-contact FMCW radar cardiac displacement waveforms aligned with ECG and SCG.

Architecture

Concurrent ECG/SCG/BGT60TR13C radar acquisition → ECG R-peak alignment → beat segmentation → phase-displacement and morphology candidate analysis → SQI/CTI export.

Hardware and Software

BGT60TR13C
STM32F411
ESP-32S
MPU6050
Python
NumPy
SciPy

Data Flow

Six hundred seconds of concurrent signals are aligned to a common time axis, producing 848 corresponding beats for candidate-timing distribution analysis.

Methodology

Constructed ECG R-peak anchors and SCG reference timings
Calculated radar phase displacement and beat-relative segments
Exported detector fusion, signal-quality indices, and candidate timing intervals

Results

600 seconds of concurrent ECG, SCG, and radar acquisition
848 corresponding beats analyzed
Radar-derived AO/AC candidate timing distributions constructed

01Problem

The project analyzes AO/AC-related candidate timings in non-contact FMCW radar cardiac displacement waveforms aligned with...

02Architecture

Concurrent ECG/SCG/BGT60TR13C radar acquisition → ECG R-peak alignment → beat segmentation → phase-displacement and morpho...

03Method

Constructed ECG R-peak anchors and SCG reference timings

04Result

600 seconds of concurrent ECG, SCG, and radar acquisition

A compact problem-to-result map generated from the project data used on this page.

Architecture and result views

FMCW radar cardiac-signal acquisition setup with an STM32 board and ECG electrodes — Hardware used for concurrent ECG, SCG, and radar acquisition

ECG, SCG, and radar cardiac waveforms on a common time axis — Example multimodal waveform alignment anchored to ECG R-peaks

What I worked on

ECG R-peak anchoring and SCG reference timing
Radar phase displacement and beat segmentation
Detector fusion, SQI, and CTI export

Code and results

Analysis source plus configuration and export documentation
STM32 and ESP32 acquisition firmware
Photographs of the hardware used for concurrent ECG, SCG, and radar acquisition

Next steps

The current AO/AC values are candidate timings derived from radar morphology. Extending this work to direct valve imaging or clinical performance requires follow-up comparison with independent echo, ICG, or PCG measurements.

Project resources

Repository Project Pages

I aligned SCG and FMCW radar waveforms around ECG R-peaks and compared AO and AC candidate timing. These candidates come from radar-phase morphology; they are not direct images of heart valves.