Which component describes the network and configuration of satellites in GNSS?

The term that describes the network and configuration of satellites in a Global Navigation Satellite System (GNSS) is "constellation." In a GNSS context, a constellation refers to the specific arrangement and operational satellites that work together to provide comprehensive coverage for positioning, navigation, and timing. Each satellite in the constellation sends signals to receivers on the Earth's surface, allowing for accurate determination of location.

The constellation's configuration, including the number of satellites and their orbits, is crucial because it affects the accuracy and reliability of the positioning information provided to users. A well-designed constellation will ensure that at least four satellites are in view from any point on Earth, which is necessary for three-dimensional positioning and precise timing.

While the other terms presented may relate to different aspects of navigation or mapping systems, they do not specifically denote the arrangement of satellites. For instance, "system" could refer to the overall GNSS framework but not specifically the satellites alone, and "grid" and "framework" refer to structures or organizational schemes that do not encapsulate the satellite configuration aspect. Thus, "constellation" is the accurate and specific term used in this context.