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performance drift error (PDE)

Standard

ECSS-E-ST-60-10C - Control performance (15 November 2008)

Definition

difference between the means of the performance error taken over two time intervals within a single observation period

Notes

  • NOTE 1 This is expressed by:
  • NOTE 2 Where the time intervals Dt1 and Dt2 are separated by a non-zero time interval DtPDE .
  • NOTE 3 The durations of Dt1 and Dt2 are sufficiently long to average out short term contributions. Ideally they have the same duration. See annex A.1.4 for further discussion of the choice of Dt1, Dt2, DtPDE.
  • NOTE 4 The two intervals Dt1 and Dt2 are within a single observation period

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