insar-management-system-v2/docs/GAMMA_SBAS_EXPERT_WORKFLOW_AUDIT_20260608.md

Gamma SBAS expert workflow audit 2026-06-08

Scope

Audited run:

• run_id: sbas_a5d51de3808a
• workflow manifest: backend/runtime/sbas_insar_production/runs/sbas_a5d51de3808a/manifest.json
• command manifest: backend/runtime/sbas_insar_production/runs/sbas_a5d51de3808a/gamma_command_manifest.json
• scripts: backend/runtime/sbas_insar_production/runs/sbas_a5d51de3808a/scripts/*.sh
• result catalog product: gamma_sbas_sbas_a5d51de3808a

The audit checks whether the production path follows LT1_GAMMA_SBAS_逐命令处理流程.docx as represented by docs/GAMMA_SBAS_EXPERT_CORRECT_IMPLEMENTATION_ROUTE_20260607.md.

Result

The Gamma processing chain is now aligned with the expert-document workflow at the command-chain level. The run completed all 12 expert workflow steps and the result catalog registers only the expert-chain products as the primary SBAS result.

This is not the old mixed Gamma/PyINT path. The old invalid run and old invalid catalog record were removed.

Step Mapping

Step	Expert workflow requirement	Current run evidence	Status
01 Workspace	Expert directories: RAW, SLC, dem, rslc_prep, mli_dir, diff_dir, diff1_dir, sbas, publish, logs, scripts, state	All directories exist under the run root	Pass
02 Import LT1 SLC	par_LT1_SLC, copy original par, ORB_filt_spline.py, SLC_corners, browse checks	Script uses par_LT1_SLC and ORB_filt_spline.py; SLC products exist	Pass
03 Reference MLI	multi_look, width/line checks, ras_dB, SLC_corners	Command audit passed with multi_look, ras_dB, SLC_corners; mli.ave products exist	Pass
04 DEM Lookup	dem_import, fill_gaps, gc_map2, pixel_area, create_diff_par, offset_pwrm, offset_fitm, gc_map_fine, geocode, geocode_back	Command audit passed; 20241007.lt_fine, 20241007.hgt, 20241007_seg.dem_par exist	Pass
05 Coreg Prep	Copy reference SLC to RSLC prep and initialize rslc_tab	rslc_prep/rslc_tab exists	Pass
06 Coregister Scenes	create_offset, init_offset_orbit, init_offset, offset_pwr, offset_fit, SLC_interp	Command audit passed with all required commands	Pass
07 RMLI Average	mk_mli_all, width/line checks, ras_dB	Command audit passed; mli.ave, mli.ave.par exist	Pass
08 Diff Network	base_calc, base_plot, mk_diff_2d	Command audit passed; itab, bprep_file exist	Pass
09 Filter Unwrap	mk_adf_2d, ave_image, rascc_mask, two mk_unw_2d passes	Command audit passed with required commands	Pass
10 Detrend ATM	create_diff_par, quad_fit, quad_sub, atm_mod_2d, fill_gaps, atm_sim_2d, sub_phase	Command audit passed; unw_atmsub_tab exists	Pass
11 SBAS Inversion	Three mb passes with complex conversion and unw_model correction	Script runs three mb calls, real_to_cpx -, unw_model; diff.sigma_ts, itab_ts, ras/diff.tab exist	Pass with documented compatibility note
12 Outputs Points	replace_values, mask_data, dispmap, ts_rate, geocode_back, data2geotiff, disp_prt_2d	Command audit passed; geo_los_def_rate.tif, geo_los_def_rate_rgb.tif, items.txt, disp_point.txt exist	Pass

Compatibility Note

The expert route originally referenced unw_to_cpx. The installed Gamma environment used for this run does not provide unw_to_cpx, and the implementation uses:

real_to_cpx - <pair>.unw.atmsub <pair>.unw.atmsub.cpx <width> 1

This is used only at the same workflow point to create the complex input consumed by unw_model. The command manifest, production code, and audit route have been updated to state this explicitly.

Primary Products

The valid expert-chain products are:

• publish/geotiff/geo_los_def_rate.tif
• publish/geotiff/geo_los_def_rate_rgb.tif
• publish/points/items.txt
• publish/points/disp_point.txt

System-generated visualization derivatives are:

• publish/geotiff/geo_los_def_rate_rgb_preview.png
• publish/geotiff/geo_los_def_rate_hls_colorbar.png
• publish/monitor_points/expert_point_001_timeseries.png
• publish/monitor_points/expert_point_001_timeseries.csv
• publish/monitor_points/expert_point_001_metadata.json

These derivatives are not substitutes for the expert Gamma products. They are catalog and UI display assets derived after the expert outputs exist.

Catalog Status

After cleanup and rebuild:

• SBAS catalog run count: 1
• registered product: gamma_sbas_sbas_a5d51de3808a
• product status: READY
• health status: OK
• issue count: 0

Residual Risk

The command chain now follows the expert workflow. Remaining validation should be scientific review of parameter choices and result interpretation, especially:

• reference window size and selected reference point
• baseline network selection and itab approval policy
• deformation sign convention for business reporting
• whether the expert accepts real_to_cpx - as the local Gamma equivalent of the documented complex conversion step