A low cost remote sensing system using PC and stereo equipment
Joel F. Campbell, Michael A. Flood, Narasimha S. Prasad, Wade D. Hodson · American Journal of Physics · 2011
A system using a personal computer, speaker, and a microphone is used to detect objects, and make crude measurements using a carrier modulated by a pseudorandom noise (PN) code. This system can be constructed using a personal computer and audio equipment commonly found in the laboratory or at home, or more sophisticated equipment that can be purchased at a reasonable cost. We demonstrate its value as an instructional tool for teaching concepts of remote sensing and digital signal processing.