What aspect of GPS data is affected by the alignment of satellites?

The accuracy of GPS data is significantly influenced by the alignment of satellites. When satellites are well spaced and distributed across the sky, they provide multiple viewpoints for determining a GPS receiver's position. This geometric arrangement, often referred to as "geometric dilution of precision" (GDOP), helps improve the triangulation of the signals received from the satellites, which leads to a more precise location fix.

In contrast, if satellites are clustered too closely together, perhaps from the perspective of the receiver, the geometry becomes less favorable, and the accuracy can degrade. Thus, the ability to calculate an accurate position depends on how well the satellites are aligned in relation to each other and the receiver on the ground. A better satellite alignment allows for greater accuracy in determining the receiver's position by providing more reliable measurements and reducing potential errors.