Hack in options for enlarging raw data gaps

python/packages/nisar/workflows/focus.py

@@ -1867,6 +1867,16 @@ def temp(suffix):
                 channel_in.band.center, fs, raw_grid.shape[1],
                 raw.isDithered(channel_in.freq_id))
 
+            usec2samp = lambda x: round(x * 1e-6 * isce3.core.speed_of_light / (2 * raw_grid.slant_ranges.spacing))
+            pad_left = usec2samp(cfg.processing.gap_pad_usec.left)
+            pad_right = usec2samp(cfg.processing.gap_pad_usec.right)
+            log.info(f"Padding gaps ({-pad_left}, {pad_right})")
+            valid = swaths[..., 1] > swaths[..., 0]
+            swaths[valid, 0] += pad_right
+            ends = swaths[valid, 1]
+            swaths[valid, 1] = np.where(ends >= pad_left, ends - pad_left,
+                np.zeros_like(ends))
+
             for i in range(0, raw_grid.shape[0], na):
                 pulse = i + pulse_begin
                 nblock = min(na, rawdata.shape[0] - pulse, raw_mm.shape[0] - i)

share/nisar/defaults/focus.yaml

@@ -423,6 +423,11 @@ runconfig:
             # cal pulses.
             zero_fill_gaps: True
 
+            # Options to enlarge gaps
+            gap_pad_usec:
+                left: 0.0
+                right: 0.0
+
             caltone:
                 # If "azimuth_mean", subtract the azimuth mean from the raw
                 # data, which is useful when the caltone is nearly constant in

share/nisar/schemas/focus.yaml

@@ -253,6 +253,10 @@ runconfig:
       # If true, fill transmit gaps with zeros to remove loop-back cal pulses.
       zero_fill_gaps: bool(required=False)
 
+      #gap_pad_usec:
+      #    left: 0.0
+      #    right: 0.0
+
       caltone: include('caltone_options', required=False)
 
       # Processing stage switches, mostly for debug.