Table 3 Beam wander parameters for uplink GEO OFL.

From: Link budget analysis of bi-directional LEO and GEO optical feeder links advancing the beam wander model’s accuracy

Link distance

Output parameter

Beam wander variance \(\langle {r_c^2}\rangle \)

Angular beam wander \(\theta _{BW}\)

Beam wander loss \(L_{BW}\)

Conventional approximation \({L}=65,908.14\) km

\(3.1203\times 10^5\)

14.5590 \( \upmu \) rad

− 4.4787 dB

More accurate approximation \(L=38,368.91\) km

\(1.0575\times 10^5\)

8.4757 \( \upmu \) rad

− 2.0726 dB

Exact value \(L=38,367.80\) km

\(1.0574\times 10^5\)

8.4757 \( \upmu \) rad

− 2.0726 dB

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