Showcase · Systems

sencom

A satellite constellation tracker that gets the coordinate frames right. Live CelesTrak two-line elements are propagated with SGP4 compiled to WebAssembly, and the whole frame chain — TEME → ECEF → topocentric, with the sidereal-time rotation and the Earth-rotation velocity term most visualizers quietly drop — runs in Rust, so sub-satellite points, pass times, Doppler shift, and free-space path loss come out actually correct. Thousands of satellites orbit a hand-written WebGL2 globe.

Drag to orbit the camera, scroll to zoom. Pick a satellite to see its live link budget and 24-hour pass schedule over a ground station. The maths is validated against a real ISS pass — see the project's docs/frames.md.