AOCS Requirements and Practical Limitations for High-Speed Communications on Small Satellites

Table 30

Pointing error budgets for optical communications at 400 kilometers with lower attitude error.

PES	Error in source	Pointing error (mrad)
		°	°	°	°	°
Attitude errors:
Azimuth	0.001°	0.0159	0.0154	0.0116	0.0082	0.0000
Nadir angle	0.002°	0.0349	0.0349	0.0349	0.0349	0.0349
Position errors:
In-track	2 meters	0.0007	0.0009	0.0027	0.0039	0.0050
Cross-track	2 meters	0.0017	0.0020	0.0036	0.0044	0.0050
Radial	2 meters	0.0015	0.0018	0.0024	0.0021	0.0000
Root sum square		0.0384	0.0383	0.0371	0.0364	0.0356