Req. 5.3.4.5: "Time Stamp Accuracy"

The time accuracy of event time measurements shall be better than 10 usec relative to spacecraft time. The goal is to achieve time accuracy of better than 2 usec relative to spacecraft time.

Basis (help)

[3] 5.2.11

3: "LAT Performance Spec. - Level II(b) Spec." (LAT-SS-00010)

5.2.11: "Time Accuracy {SRD Table 2}"

The time accuracy of event time measurements shall be better than 10 usec relative to spacecraft time.

The goal is to achieve time accuracy of better than 2 usec relative to spacecraft time.

Context (help)

Test(s)

010b: LAT Time Signal Processing

This test verifies that the LAT FSW correctly processes the 1 Hz GPS time message from the SC to provide a mapping of external time to the LAT internal 20 MHz clock, and that the resulting mapping allows event time measurements to be accurate to within 10 usec of SC time.