Home▸Space & Astronomy▸FAST Radio Telescope 2D: Collecting Area & Signal Detection

FAST Radio Telescope 2D: Collecting Area & Signal Detection

2D radiometer-equation lab: drag dish diameter, integration time and source flux and watch the real SNR = S / (SEFD / √(2·B·t)) sensitivity math cross the detection threshold, modeled on FAST's real 500 m aperture.

Space & Astronomy2DModerate60 FPS📱 Mobile-adapted⇄ 3D version

Details

CategorySpace & Astronomy

RenderingCanvas 2D

DifficultyModerate

Target FPS60

ControlsDrag the dish-diameter, integration-time and source-flux sliders (or use the 25 m / FAST 500 m and Weak FRB / Bright source presets) and watch the collecting-area diagram, the live SNR-vs-time curve and the signal-vs-noise strip update from the real radiometer equation.

collecting arearadiometer equationsignal-to-noise ratiosefdfast telescoperadio astronomy

Related simulations

Radio Telescope Array SimulationExplore how an array of radio dishes observes the sky.

PulsarWatch a rotating neutron star sweep its radio beam across the sky.

Space Telescope — L2 Lagrange Point & Halo OrbitFollow a space telescope holding station at the Sun-Earth L2 point. ⊞ All 1337 in Space & Astronomy →

This 2D companion strips the same sensitivity physics as the 3D FAST scene down to the numbers that actually decide a detection: a dish diagram shows collecting area growing as A = π(D/2)², a live SNR-vs-time curve traces the radiometer equation's √t growth as integration builds up, and a signal-vs-noise strip shows a source's peak either drowning in the noise floor or standing clear of it. Drag the diameter slider from a 25 m reference dish up to FAST's real 500 m aperture, or trade integration time against source flux, and watch the SNR curve cross the marginal (3σ) and confident (7σ) detection thresholds exactly where the equation SNR = S / (SEFD / √(2·B·t)) says it should — the same formula radio astronomers use to plan real observations.

⚙ Under the hood

2D radiometer-equation lab with a live collecting-area diagram, an SNR-vs-integration-time curve and a signal-vs-noise strip, driven by the real SEFD/radiometer sensitivity formula and modeled on FAST's 500 m aperture.

collecting arearadiometer equationsignal-to-noise ratiosefdfast telescoperadio astronomy

2D · HTML5 Canvas 2D · 60 FPS target · runs fully client-side, no install