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

Table 29

Pointing error budgets for optical communications at 900 kilometers.

PES	Error in source	Pointing error (mrad)
		°	°	°	°	°
Attitude errors:
Azimuth	0.002°	0.0295	0.0287	0.0216	0.0153	0.0000
Nadir angle	0.002°	0.0349	0.0349	0.0349	0.0349	0.0349
Position errors:
In-track	2 meters	0.0005	0.0006	0.0013	0.0018	0.0022
Cross-track	2 meters	0.0009	0.0010	0.0017	0.0020	0.0022
Radial	2 meters	0.0008	0.0008	0.0010	0.0009	0.0000
Root sum square		0.0458	0.0452	0.0411	0.0382	0.0350