docstring updated; variable name changed

Author: seongsujeong

src/s1reader/s1_burst_slc.py

@@ -701,7 +701,7 @@ def az_carrier_components(self, offset, position):
 
     def az_fm_rate_mismatch_mitigation(self, path_dem: str,
                                              path_scratch: str = None,
-                                             rg_step=None,
+                                             range_step=None,
                                              az_step=None,
                                              threshold_rdr2geo=1e-8,
                                              numiter_rdr2geo=25,
@@ -718,6 +718,11 @@ def az_fm_rate_mismatch_mitigation(self, path_dem: str,
             Path to the DEM to calculate the actual azimuth FM rate
         path_scratch: str
             Path to the scratch directory to store intermediate data
+            If None, the scratch files will be saved on temporary directory generated by system
+        range_step: float
+            Range step of the correction grid in meters
+        az_step: float
+            Azimuth step of the correciton grid in seconds
         threshold_rdr2geo: int
             Threshold of the iteration for rdr2geo
         numiter_rdr2geo: int
@@ -749,20 +754,20 @@ def az_fm_rate_mismatch_mitigation(self, path_dem: str,
             correction_radargrid = custom_radargrid
 
         # Override the radargrid definition if `rg_step` and `az_step` is defined
-        if rg_step and az_step:
+        if range_step and az_step:
             if custom_radargrid is not None:
-                warnings.warn('rg_step and az_step assigned. '
+                warnings.warn('range_step and az_step assigned. '
                               'Overriding the custom radargrid definition.')
 
             width_radargrid, length_radargrid = \
-                [vec.size for vec in self._steps_to_vecs(rg_step, az_step)]
+                [vec.size for vec in self._steps_to_vecs(range_step, az_step)]
             sensing_start_radargrid = self.as_isce3_radargrid().sensing_start
             correction_radargrid = isce3.product.RadarGridParameters(
                                     sensing_start_radargrid,
                                     self.wavelength,
                                     1/az_step,
                                     self.starting_range,
-                                    rg_step,
+                                    range_step,
                                     isce3.core.LookSide.Right,
                                     length_radargrid,
                                     width_radargrid,