bugfix: incorrect mode normalisation in smf coupling link budget calc…

…ulation
ojdf · Nov 27, 2024 · ce22039 · ce22039
1 parent e4f826b
commit ce22039
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/fast/fast.py b/fast/fast.py
@@ -723,7 +723,7 @@ def compute_link_budget(self):
 
         self.link_budget['transmission_loss'] = 10*numpy.log10(self.params['TRANSMISSION'])
 
-        smf_coupling = 10*numpy.log10(((pupil_r * mode).sum() * dx_r**2)**2)
+        smf_coupling = 10*numpy.log10(((pupil_r * mode).sum() * dx_r)**2 / (mode**2).sum())
         self.link_budget['smf_coupling'] = smf_coupling
 
         self.diffraction_limit = 10**(sum(self.link_budget.values())/10) / 1e3 # W