With regard to FIG. 5, an uplink is a communication link which allows data to be sent to satellite 502 from a ground station 506, UT 508, or a device other than another satellite 502. Uplinks are designated as UL1, UL2, UL3, and so forth. For example, UL1 is a first uplink from the ground station 506 to the second satellite 502(2). In comparison, a downlink is a communication link which allows data to be sent from satellite 502 to a ground station 506, UT 508, or device other than another satellite 502. For example, DL1 is a first downlink from the second satellite 502(2) to the ground station 506. The satellites 502 may also be in communication with one another. For example, a crosslink 590 provides for communication between satellites 502 in the constellation.
