Do I need to install anything?

No. It runs in any modern browser, free, with no account required.

For Hobbyists & Makers · State Estimator

State Estimator for a drone delivery

Built for hobbyists & makers exploring it for fun. Play with real physics and math, no license and no setup — just open and tinker. Simulate a drone delivery live below — adjust the inputs and watch it respond, right in your browser.

Kalman Filter

open full solver →

Kalman FilterLive

optimal state estimation

Controls

Presets

Measurement noise

Process noise

The Kalman filter fuses a motion model with noisy measurements to track a hidden state optimally. Each step it predicts, then corrects using the Kalman gain — trusting the measurement more when the model is uncertain, and vice versa. It smooths the jittery sensor (gray) into a clean estimate (cyan) that hugs the truth. The math behind GPS, radar, and spacecraft navigation.

▶ Run in Python

Data Inspector

Measurement RMSE0.0

Kalman RMSE0.0

Noise reductionNaN%

Governing equation

\overset{x}{^} \leftarrow \overset{x}{^} + K (z - H \overset{x}{^}), K = \frac{P H ^{T}}{H P H ^{T} + R}, R = 900, Q = 1.00

Reading this result: Measurement noise dwarfs process noise, so the Kalman gain stays small — the filter leans on its motion model and smooths the jitter hard.

Runs locally in your browser — free forever. Scale to the cloud when reality gets heavy.

or unlock everything with Pro →

Also for:Students Researchers Educators Engineers K-12 Students First Responders General version →

More with State Estimator

State Estimator for a robot arm State Estimator for a self-driving car State Estimator for a warehouse robot State Estimator for a walking robot State Estimator for a robotic gripper State Estimator for a CNC toolpath State Estimator for a quadruped State Estimator for a line-follower

Frequently asked questions

Is this good for hobbyists & makers?: Yes — this version of "State Estimator for a drone delivery" is framed for hobbyists & makers exploring it for fun. Play with real physics and math, no license and no setup — just open and tinker.
Do I need to install anything?: No. It runs in any modern browser, free, with no account required.