Measuring Angles with FMCW Radar | Understanding Radar Principles

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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:
• Understanding Radar Pr...
Check out these other links:
- MIMO Radar: TI Application Report: bit.ly/3NSDi9V
- Algorithms to Antenna: Increasing Angular Resolution Using MIMO Radar: bit.ly/3MLuG3n
- Radar Angular Resolution: bit.ly/3tuDLXF
- MATLAB Example - Increasing Angular Resolution with Virtual Arrays: bit.ly/3MP28pP
- Free video course in Radar Systems Engineering: bit.ly/3Qpb2xo
- Radar Tutorial (English): bit.ly/3N3n1Oh
- Want to see all the references in a nice, organized list? Check out this journey on Resourcium: bit.ly/3NSD82j
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2 окт 2024

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Комментарии : 28

@mab7727 Год назад

How this amazing series has very few views is beyond me! probably because it's still new. Great job, thanks a lot!

@dirkl9652 Год назад

I love it when a person can take complex concepts and explain them in easy-to-understand terms. You gained a subscriber

@小捷-v5w Год назад

Thank you so much for the amazing video!! This help my research a lot!!!!!!!!!! Thank you~~~~

@jamesdash3163 Год назад

if there are more than one object, you get velocity and range of each object by FM, you also get angles of each object by angle FFT, but how can I know which angle correspond to which (velocity, distance) of the object

@emadibnalyaman8073 2 года назад

Can we get the example in minute 10? the IQ plot for each transmitter?

@seb_3366 7 месяцев назад

Thanks for that visualization. It helped me to understand the angle measuring. But I think you explained it a little too simple. At 11:00 in the top right chart, you show the "discrete" IQ values. If we have discrete values we can't do an FFT. We have to do an discrete fourier transformation (DFT). The results are also discrete so we can't see the continous SI-Funktion as you show in the bottom right chart. And here we are at the main point, the SI-Funktion is discret and the discrete values may not match with the peak of the SI-Funktion. A way to solve that is zero padding, where you add additional zero values to the DFT to display a more precise spectrum.

@ioanacsinte7971 2 месяца назад

really good video , how i can connect multiple receivers antenna from one single software ? Probability this is basic questions but i don't now because if we connect more by 2 antenna in one receiver i have just noise

@ismiregalichkochdasjetztso3232 3 месяца назад

It bothers me that this displays IQ signals somehow being a real physical phenomenon instead of an artifact of the downmixing process. Real radio waves are... real, not complex.

@evgenyborodin137 8 дней назад

It bothers me too, and the way around it, IQ is just a representation of a real signals with phase difference. It can be presented without complex numbers in more simple, but more clunky way.

@ismiregalichkochdasjetztso3232 8 дней назад

@@evgenyborodin137 And you can't have a phase difference without a reference oscillator. The signal coming from the antenna is real valued.

@usmanarif489 Год назад

Hi can you share the app code, I am trying to calculate the FFT as you calculated, but failing.

@usmanarif489 Год назад

Hos did you calculate FFT at 12:00, for Amplitude vs Sine(theta) graph?

@PabloA64 Год назад

Exquisite video!👍

@sonuanirudhanv782 Год назад

can anyone please explain how he got these graphics and controlling elements in matlab

@AshutoshSharma-xb9ku Год назад

Okay i am going to copy this code ..... But Thank You for using this way of teaching

@SORRYgemio Год назад

Thank you for the great explanation. I hope you don't mind answering a question. At 10:00, should I take the FFT of the I and Q separately since each forms a sinusoid? And in that case, either I or Q can be used. Or should I take an FFT of the complex number of I and Q together?