A radar echo can be drowned in noise, yet still be found. See how a matched filter concentrates a hidden pulse into one clear peak.
Matched FilterLive
pulling signal out of noise
Controls
Presets
A matched filter correlates a received signal with a known template, concentrating the pulse energy into a single sharp peak while averaging noise away. It gives the best possible detection in white noise — the core of radar, sonar, and GPS. Educational tool.
Reading this result: The pulse is buried, but correlation adds its energy coherently while random noise averages toward zero — the peak still clears the detection threshold.
Runs locally in your browser — free forever. Scale to the cloud when reality gets heavy.
★ Sign in to save this setupSave your tuned setup, or drop this simulation into your own site, docs, or course page.
How it works
A matched filter correlates the incoming signal with a known template of the pulse, coherently adding the pulse energy while noise averages out. It maximizes signal-to-noise ratio for detection in white noise — the backbone of radar, sonar, GPS, and digital receivers. Educational tool.
✦
Ask the AI about this model
The math, the assumptions, real-world uses, or a code translation — explained for this exact simulation.
Is this matched filter detection tool really free?▾
Yes. Matched Filter runs entirely in your browser using your device's own compute, so local use is free forever. You only pay Compute Tokens if you scale a job to the cloud.
Do I need to install anything?▾
No. Everything runs client-side in a modern browser — no downloads, no license, no account required to start.
Can I save or share my simulation?▾
Create a free account to save projects, and use a shareable embed or minted DOI to publish a live, interactive version anywhere.
How accurate are the results?▾
The solver uses established numerical methods, but results are for research and educational purposes and should be validated against experiment or professional review before you rely on them.