update get_raw_sigma0_full_size to mask values with DN=0

nansencenter · May 31, 2023 · 1380b92 · 1380b92
1 parent d8e596f
commit 1380b92
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/s1denoise/sentinel1image.py b/s1denoise/sentinel1image.py
@@ -777,6 +777,7 @@ def get_raw_sigma0_full_size(self, polarization):
         cal_s0 = self.get_calibration_vectors(polarization, line, pixel)
 
         sigma0_fs = dn.astype(float)**2 / self.get_calibration_full_size(polarization, power=2)
+        sigma0_fs[dn == 0] = np.nan
 
         return sigma0_fs