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feat(sim): add capture-aware rf physics - #70

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Komzpa wants to merge 29 commits into
meshtastic:masterfrom
Komzpa:codex/split-rf-physics
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Komzpa wants to merge 29 commits into
meshtastic:masterfrom
Komzpa:codex/split-rf-physics

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@Komzpa

@Komzpa Komzpa commented May 2, 2026

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Summary

  • add a shared directed link-budget helper that combines distance, SRTM terrain from feat(sim): add map and terrain inputs #68, clutter from feat(sim): add land-cover clutter inputs #69, antenna gains, offsets, and reusable calibration features
  • route packet RF visibility through that shared link-budget helper so terrain/clutter loss is applied in the RF physics layer, not in the input layer
  • preserve feat(sim): add map and terrain inputs #68 terrain-backed absolute node altitudes for geometry while using separate antenna-height values for Hata/base path-loss terms
  • add an opt-in empirical SNR-to-payload-loss model
  • add a capture-aware overlap/collision model with CAD-detectable interference energy
  • keep baseline simulator behavior disabled by default, with stats and focused tests for the new path

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Validation

  • /tmp/meshtasticator-pr68-venv/bin/python -m unittest tests.test_radio_loss tests.test_link_model tests.test_collision_model tests.test_lora_mesh_cli tests.test_node tests.test_terrain tests.test_clutter tests.test_osm_clutter tests.test_map_input
  • /home/kom/.local/bin/ruff check loraMesh.py lib/config.py lib/common.py lib/map_input.py lib/node.py lib/packet.py lib/terrain.py lib/link_model.py lib/radio_loss.py lib/phy.py tests/test_radio_loss.py tests/test_link_model.py tests/test_collision_model.py tests/test_lora_mesh_cli.py tests/test_node.py tests/test_terrain.py tests/test_map_input.py
  • git diff --check
  • previously for this slice: compileall; full-suite baseline still has the unrelated test_discrete_sim_ten_nodes messageSeq mismatch from origin/master

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Comment thread lib/node.py
@Komzpa
Komzpa marked this pull request as draft May 17, 2026 17:41
Komzpa added 12 commits August 17, 2026 14:16
Signed-off-by: Darafei Praliaskouski <me@komzpa.net>
- treat unparsable map altitude values as absent instead of failing the
  whole import with an uncaught TypeError/ValueError
- import CLIENT_BASE nodes on the router side: current firmware
  rebroadcasts them like ROUTER_LATE
- compare the trig-derived origin longitude with a tolerance in tests
A present origin block that is not a map or lacks a usable lat/lon pair
now raises instead of silently dropping the origin and projecting
terrain against a different origin than the author intended. Accept the
latitude/longitude key spellings alongside lat/lon.
Concurrent runs sharing one cache directory wrote the same fixed temp
filename and could atomically publish an interleaved, corrupt tile that
then stayed cached. Download and unpack through process-unique temp
names and clean up archives after unpacking.
Cache keys carried id(TERRAIN_GRID), so a reused object address after a
Config-reusing parse could serve losses computed against an earlier
grid. Key the cache on a monotonically increasing per-grid token
instead. Also pick the nearest interpolation samples with
heapq.nsmallest instead of sorting every sample in this hot path, and
use the shared node_antenna_height helper from lib.common instead of a
diverging local copy.
Automatic SRTM tile selection evaluated the full link budget for every
node pair. Derive one conservative best-case link distance (path loss
grows monotonically with distance in every lib.phy model) and skip
pairs beyond it before the expensive per-pair work; document that the
selection scales with node pairs and recommend --map-limit for broad
imports. Also log when a wrapped --map-bbox is discarded for terrain so
the substituted extent is not silent, and import node_antenna_height
from its canonical module.
TCPInterface connects without a socket timeout, so a stale
--nodedb-host blocked the CLI indefinitely. Probe reachability with a
bounded connect first so unreachable hosts fail fast with the existing
could-not-connect error.
@Komzpa
Komzpa force-pushed the codex/split-rf-physics branch from 1377683 to e154fb6 Compare August 21, 2026 00:30
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@Komzpa
Komzpa force-pushed the codex/split-rf-physics branch from e154fb6 to b1a7568 Compare August 21, 2026 00:57
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