GLONASSARY

Elevation Mask Refers to an elevation relative to the horizon in which GPS/GNSS satellites contained within are not used in a positional solution. There is a significant increase in distance between a receiver and a satellite on the edge of the horizon as opposed to a satellite directly above the receiver. This increase in distance allows for more ionospheric error resulting in poor accuracy when used in the positional solution. The satellite will typically not be used for a positional solution until it rises at least 10 degrees above the horizon and is therefore “masked” from the group of satellites used for position determination.

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GLONASS ARTICLES

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