Chirp Spread Spectrum Explained
🌀 What Is Chirp Spread Spectrum? Chirp Spread Spectrum (CSS) is a wireless modulation technique that encodes data using signals called chirps — waveforms that sweep across a range of frequencies over time. Think of it like sonar: instead of sending a single tone, a device sends a sweeping signal that changes pitch as it moves. These chirps can be increasing (up-chirp) or decreasing (down-chirp) in frequency. This sweeping behavior makes CSS highly resistant to interference and noise. Even if parts of the signal are lost or distorted, the receiver can still reconstruct the message. That’s why CSS is ideal for long-range, low-power communication in challenging environments. ...