chore: initialize insar management system v2

experiments/isce2_sbas_timeseries/notes/PHASE0_SAMPLE_STACK_SELECTION.md

@@ -0,0 +1,92 @@
+# Phase 0 Sample Stack Selection
+
+Updated: 2026-04-03
+
+## Selected baseline sample
+
+Current baseline sample stack:
+
+- group key:
+  - `LT1A|STRIP1|HH|DESCENDING|E123.3_N46.1`
+- manifest:
+  - `experiments/isce2_sbas_timeseries/configs/sample_stack_e123p3_n46p1.json`
+
+## Sample summary
+
+- satellite:
+  - `LT1A`
+- mode:
+  - `STRIP1`
+- polarization:
+  - `HH`
+- orbit direction:
+  - `DESCENDING`
+- scene count:
+  - `5`
+- dates:
+  - `20250118`
+  - `20250315`
+  - `20250510`
+  - `20250705`
+  - `20250830`
+- recommended reference date:
+  - `20250510`
+- receiving stations observed:
+  - `SYC`
+  - `KSC`
+
+## Why this sample is useful
+
+- It already satisfies a minimal SBAS smoke-test stack size.
+- All scenes share the same:
+  - satellite
+  - imaging mode
+  - polarization
+  - orbit direction
+  - tile key
+- The dates are evenly spaced enough to act as a first time-series experiment set.
+
+## Important adjacent-tile signal
+
+This sample is not isolated.
+
+The same date sequence also appears in multiple neighboring descending tiles, including:
+
+- `E123.5_N46.6`
+- `E123.6_N47.0`
+- `E123.8_N47.5`
+- `E123.9_N48.0`
+- `E124.5_N49.9`
+- `E124.7_N50.3`
+- `E124.8_N50.8`
+- `E125.0_N51.3`
+- `E125.1_N51.8`
+- `E125.3_N52.2`
+- `E125.5_N52.7`
+
+These neighboring tiles share the same 5 acquisition dates:
+
+- `20250118`
+- `20250315`
+- `20250510`
+- `20250705`
+- `20250830`
+
+## Implication
+
+This strongly suggests the data pool contains a larger repeated strip-family, not just isolated scenes.
+
+Recommended experiment order:
+
+1. Start with one tile-level stack smoke test using `E123.3_N46.1`.
+2. If stack-prep works, expand to multiple adjacent tiles with the same date family.
+3. Only after that, test a wider strip or mosaic strategy.
+
+## Current risk judgment
+
+The main remaining uncertainty is still not scene selection.
+
+The main uncertainty is:
+
+- how to convert LT-1 per-scene `tiff + meta.xml` folders
+- into a stack layout and sensor input form acceptable to the ISCE2 stripmap stack workflow