0.1.1 Earth Horizon Sensor Added (2026-04-15)¶

Earth horizon sensing is now available in Generalized_ADCS through EarthHorizonSensor. This sensor models a horizon detector that returns a body-frame nadir/horizon direction measurement when Earth is inside the sensor field of view, with configurable boresight and noise behavior. In practice, it provides an additional attitude reference that complements sun and magnetic measurements, and can be used in simulation and estimator pipelines to improve robustness for nadir-pointing or low-observability conditions.

API page: EarthHorizonSensor
Direct docs link: https://nscheuer.github.io/Generalized_ADCS/ADCS.satellite_hardware.sensors.earth_horizon.html

Earth horizon image for release note 0.1.1.

Image source: NASA - Sun shines above Earth’s horizon.