Molniya orbit
A ground station receiving data from a satellite constellation in a highly elliptical orbit must periodically switch between satellites and deal with varying signal strengths, latency and Doppler shifts as the satellites range changes throughout its orbit. These changes are less pronounced for satellites in a Tundra orbit, given their increased distance from the surface, making tracking and communication more efficient. Additionally, unlike the Molniya orbit, a satellite in a Tundra orbit avoids passing through the Van Allen belts.