Acoustic radar project for students

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SUMMARY

The discussion centers on building an acoustic radar, also known as sonar, using a carrier modulated with pseudo-noise code transmitted through a speaker and received via a directional microphone. Signal processing techniques are employed to analyze the resulting pulse profile, which indicates distance. This project serves as a radar or lidar simulator, providing a practical application for students interested in physics and engineering.

PREREQUISITES
  • Understanding of signal processing techniques
  • Familiarity with pseudo-noise code modulation
  • Knowledge of directional microphone operation
  • Basic principles of radar and lidar systems
NEXT STEPS
  • Research signal processing algorithms for distance measurement
  • Explore pseudo-noise code modulation techniques
  • Learn about the operation and applications of directional microphones
  • Investigate the differences between radar, lidar, and sonar systems
USEFUL FOR

This discussion is beneficial for students in physics and engineering, educators looking for practical projects, and hobbyists interested in acoustic sensing technologies.

cowboy3
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I came across an article in American Journal of Physics recently that describes how to build an acoustic radar by transmitting a carrier modulated with pseudo-noise code through a speaker and simultaneously receiving the reflection with a directional microphone. One then does some signal processing to get the resulting pulse profile as a function of distance. It was originally conceived as a radar or lidar simulator.

http://ajp.aapt.org/resource/1/ajpias/v79/i12/p1240_s1

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Hi cowboy3, welcome to PF

That seems like a pretty fun project!

Btw, another word for "acoustic radar" is "sonar".
 
I think the term acoustic radar and sodar are commonly used for sonar in air though sonar is correct also.