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A Review on Low-Cost Microwave Doppler Radar Systems for Structural Health Monitoring.

Davi V Q Rodrigues¹, Changzhi Li¹

¹Department of Electrical and Computer Engineering, Texas Tech University, Lubbock, TX 79409, USA.

Sensors (Basel, Switzerland)

|April 30, 2021

Summary

Low-cost microwave radars offer a noncontact method for monitoring structural health and complex rotating systems. Recent advances focus on Doppler radar for precise displacement measurements and structural health analysis using digital signal processing.

Keywords:

Doppler radar displacement measurement low-cost radar micro-Doppler portable radar radar network remote sensing

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Area of Science:

Engineering
Physics
Computer Science

Background:

Noncontact structural condition monitoring is crucial for infrastructure safety.
Microwave radars present a viable alternative to traditional monitoring methods.
Low-cost, portable radar systems are increasingly accessible for research and application.

Purpose of the Study:

To review recent technical advancements in low-cost Doppler radar systems.
To explore radar applications in phase-demodulated displacement measurements.
To discuss time-Doppler analysis for structural health information and sensor networks.

Main Methods:

Review of recent literature on low-cost Doppler radar systems.
Analysis of phase-demodulated displacement measurement techniques.
Exploration of time-Doppler analysis for structural health monitoring.

Main Results:

Low-cost Doppler radars enable accurate, noncontact monitoring of structures.
Radar systems offer velocity information for complex rotating structures.
Digital signal processing enhances radar capabilities for structural health information.

Conclusions:

Portable, low-cost microwave radars are effective for structural condition monitoring.
Radar sensor networks show promise for advanced structural health analysis.
Continued advances in radar technology are expanding its application scope.