Learn how multiple antennas are used to determine the azimuth and elevation of an object using Frequency Modulated Continuous Wave (FMCW) radar.
By looking at the phase shift between the received signals of more than one antenna, the direction to an object can be determined. The accuracy of this measurement depends on the signal-to-noise ratio (SNR) of the radar system. Increasing the number of elements in the antenna array increases the angular resolution of the radar. With multiple transmit and receive antennas, a virtual array can be created which can produce the same resolution with fewer overall antenna elements.
Watch our full video series on Understanding Radar Principles:
https://www.youtube.com/playlist?list=PLn8PRpmsu08qneMlsfqN69EdkiVzdLaO-
Check out these other resources:
- MIMO Radar: TI Application Report: https://bit.ly/3NSDi9V
- Algorithms to Antenna: Increasing Angular Resolution Using MIMO Radar: https://bit.ly/3MLuG3n
- Radar Angular Resolution: https://bit.ly/3tuDLXF
- MATLAB Example — Increasing Angular Resolution with Virtual Arrays: https://bit.ly/3MP28pP
- Free video course in Radar Systems Engineering: https://bit.ly/3Qpb2xo
- Radar Tutorial (English): https://bit.ly/3N3n1Oh
- Want to see all the references in a nice, organized list? Check out this journey on Resourcium: https://bit.ly/3NSD82j
Chapters:
00:00 Introduction
1:08 Why Direction Matters in Radar Systems
2:36 Beamforming allows for Directionality
4:15 Using Multiple Antennas for Angle Measurement
7:16 Impact of Noise on Angle Accuracy
8:52 Increasing Angular Resolution with Antenna Arrays
10:01 MATLAB Demonstration of Antenna Arrays
14:12 Enhancing Resolution with MIMO Radar
15:30 Conclusion and Next Steps
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