The Orbital Index is a curated newsletter from Andrew Cantino and Ben Lachman covering everything interesting in space science and the burgeoning space industry.
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Degrees From Horizon For Connectivity ?✕
Degrees From Horizon is the amount you have to tilt your head to look at the satellite when standing in a flat field.
We believe the initial constellation will have connectivity if the satellite is 25° above the receiver's horizon, and that this requirement will later be eased to 40° to increase performance as satellite density increases. Note: This angle defines the maximum height above the horizon in all directions that can be occluded by any terrain, trees, or other structures.