Quick updates to GCOV workflow parameters (#854)

* expose RTC DEM upsampling to the GCOV runconfig, set clip_min, clip_max, and rtc_min_value_db defaults to NaN

* set RTC DEM upsampling default to 1

Author: gshiroma

python/packages/nisar/workflows/gcov.py

@@ -65,6 +65,7 @@ def run(cfg):
     rtc_algorithm = rtc_dict['algorithm_type']
     input_terrain_radiometry = rtc_dict['input_terrain_radiometry']
     rtc_min_value_db = rtc_dict['rtc_min_value_db']
+    rtc_upsampling = rtc_dict['dem_upsampling']
 
     # unpack geo2rdr parameters
     geo2rdr_dict = cfg['processing']['geo2rdr']
@@ -291,6 +292,7 @@ def run(cfg):
                     output_terrain_radiometry=output_terrain_radiometry,
                     exponent=exponent,
                     rtc_min_value_db=rtc_min_value_db,
+                    rtc_upsampling=rtc_upsampling,
                     rtc_algorithm=rtc_algorithm,
                     abs_cal_factor=abs_cal_factor,
                     flag_upsample_radar_grid=flag_upsample_radar_grid,

python/packages/nisar/workflows/gcov_runconfig.py

@@ -26,10 +26,10 @@ def load(self):
             geocode_dict['abs_rad_cal'] = 1.0
 
         if geocode_dict['clip_max'] is None:
-            geocode_dict['clip_max'] = 5.0
+            geocode_dict['clip_max'] = np.nan
 
         if geocode_dict['clip_min'] is None:
-            geocode_dict['clip_min'] = 0.0
+            geocode_dict['clip_min'] = np.nan
 
         if geocode_dict['geogrid_upsampling'] is None:
             geocode_dict['geogrid_upsampling'] = 1.0

share/nisar/defaults/gcov.yaml

@@ -101,7 +101,10 @@ runconfig:
                 input_terrain_radiometry: beta0
 
                 # OPTIONAL - Minimum RTC area factor in dB
-                rtc_min_value_db: -30
+                rtc_min_value_db:
+
+                # RTC DEM upsampling
+                dem_upsampling: 1
 
             # OPTIONAL - Mechanism to specify output posting and DEM
             geocode:
@@ -131,10 +134,10 @@ runconfig:
                 abs_rad_cal: 1
 
                 # OPTIONAL - Clip values above threshold
-                clip_max: 5.0
+                clip_max:
 
                 # OPTIONAL - Clip values below threshold
-                clip_min: 0.0
+                clip_min:
 
                 # OPTIONAL - Double sampling of the radar-grid
                 # input sampling in the range direction

share/nisar/schemas/gcov.yaml

@@ -172,6 +172,9 @@ rtc_options:
     # Minimum RTC area factor in dB
     rtc_min_value_db: num(required=False)
 
+    # RTC DEM upsampling
+    dem_upsampling: int(min=1, required=False)
+
 geocode_options:
     algorithm_type: enum('area_projection', 'sinc', 'bilinear', 'bicubic', 'nearest', 'biquintic', required=False)