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Graham McIntire bd107ee747
feat(eme): add /eme Earth-Moon-Earth calculator 
New /eme page — antenna aiming + link budget for moonbounce.

Given a station (callsign / grid / lat,lon), TX power, antenna gain,
detection bandwidth, and system Tsys, the page shows in real time:

- Moon azimuth / elevation from the observer (ticks every 10 s)
- Slant range to the Moon
- EIRP breakdown: TX(dBm) + gain(dBi) = EIRP(dBm)
- Path-loss decomposition (Earth → Moon → Earth):
    free-space spreading (×2)
    − moon reflection gain 10·log(4π σ / λ²) where σ = ρ·π·R²
    = round-trip path loss
- Band-dependent lunar albedo ρ (VHF ≈ 0.065, microwave ≈ 0.08,
  mm-wave ≈ 0.02) surfaced as a named line item with the current
  ρ shown to three decimals
- Received power, thermal noise floor, and SNR with a badge that
  classifies the margin (strong / marginal / below noise)
- Self-echo Doppler shift with its radial-velocity driver

New modules:

- `Microwaveprop.Moon` — low-precision lunar ephemeris
  (Astronomical Almanac Sec. D.4 truncated series). Provides
  `julian_day/1`, `geocentric/1`, `observer_position/3`, and
  `radial_velocity_km_s/3`. Accurate to ~0.3° position / ~200 km
  distance — well inside any amateur EME-dish beamwidth.
- `Microwaveprop.Propagation.Eme` — path-loss helpers:
  `moon_albedo/1` (band lookup), `moon_rcs_m2/1`,
  `fspl_round_trip_db/2`, `moon_reflection_gain_db/2`,
  `path_loss_db/3`, `received_power_dbm/1`, `noise_floor_dbm/2`,
  `snr_db/1`, `doppler_shift_hz/2`.

Wired into the main nav ("EME" button) and the router between
/path and /rover.

Tests: 3 properties + 41 unit tests cover JD conversion, moon
position envelope, band-dependent albedo lookup, decomposition
identity, linearity/monotonicity of path loss and Doppler, and a
LiveView integration test against the rendered DOM.

Full suite: 2,460 tests + 170 properties; credo strict clean.
2026-04-23 16:18:20 -05:00
.forgejo/workflows ci(grid-rs): surface docker daemon diagnostics on wait-step failure 2026-04-20 08:41:53 -05:00
.github Add contact edit approval system with admin review queue 2026-04-11 16:15:49 -05:00
assets perf(wire)+ts: pack scores as flat tuples, bump ProfilesFile gzip, tighten TS types 2026-04-21 17:45:06 -05:00
bin Fix livebook path resolution in bin/notebook 2026-04-07 11:15:49 -05:00
config perf(oban): move IEM-heavy queues off hot pods 2026-04-23 10:53:26 -05:00
docs refactor(scores): rename file extension .ntms -> .prop with legacy reads 2026-04-21 15:54:12 -05:00
k8s chore: update prop image to git.mcintire.me/graham/prop:main-1776977813-a7250c3 [skip ci] 2026-04-23 20:59:24 +00:00
lib feat(eme): add /eme Earth-Moon-Earth calculator 2026-04-23 16:18:20 -05:00
lib_ml fix(dialyzer): clear 125+ warnings under strict flags 2026-04-21 10:30:06 -05:00
notebooks refactor: normalize pos1/pos2 JSONB key to 'lon' everywhere 2026-04-17 09:10:32 -05:00
priv feat(contacts): add free-form notes field 2026-04-23 11:02:27 -05:00
rel Add Erlang clustering via libcluster and expose LiveDashboard 2026-04-06 09:46:48 -05:00
rust/prop_grid_rs fix(rust): snap HRRR point lookups to 0.125° grid 2026-04-22 16:50:58 -05:00
scripts Add incremental prod-to-local DB sync script 2026-04-23 13:57:22 -05:00
test feat(eme): add /eme Earth-Moon-Earth calculator 2026-04-23 16:18:20 -05:00
vendor Vendor oban_pro 1.6.13 2026-04-09 14:14:49 -05:00
.credo.exs credo 2026-04-12 10:26:53 -05:00
.dockerignore Optimize Dockerfile layer caching 2026-04-01 10:32:56 -05:00
.formatter.exs initial 2026-03-28 11:28:47 -05:00
.gitignore Dual-write propagation scores to binary files on /data 2026-04-14 14:36:55 -05:00
.tool-versions update deps 2026-04-11 12:03:43 -05:00
AGENTS.md initial 2026-03-28 11:28:47 -05:00
algo.md docs(algo): align algo.md with Richardson-gated scoring implementation 2026-04-18 12:42:20 -05:00
app.json Migrate healthchecks from CHECKS to app.json 2026-04-04 11:24:56 -05:00
CLAUDE.md fix(maps): same reconnect/visibility fix for rover and weather hooks 2026-04-18 13:25:38 -05:00
Dockerfile fix(docker): use BuildKit cache mounts for apt so .debs skip the layer 2026-04-18 11:07:45 -05:00
elevation.md add elevation findings 2026-03-29 16:23:03 -05:00
LICENSE Add GPLv3 license 2026-04-23 13:57:07 -05:00
mix.exs chore(deps): upgrade live_stash 0.1.2 → 0.2.0 2026-04-23 13:56:28 -05:00
mix.lock chore(deps): upgrade live_stash 0.1.2 → 0.2.0 2026-04-23 13:56:28 -05:00
prediction.md HRRR forecast hours (f00-f18) with timeline map UI 2026-03-31 16:44:47 -05:00
README.md initial 2026-03-28 11:28:47 -05:00
tail_logs.sh Add type filter to backfill enqueue 2026-04-06 11:42:26 -05:00
updates.md Update seasonal scores from sounding data, document commercial link patterns 2026-04-07 11:45:44 -05:00

README.md

Microwaveprop

To start your Phoenix server:

  • Run mix setup to install and setup dependencies
  • Start Phoenix endpoint with mix phx.server or inside IEx with iex -S mix phx.server

Now you can visit localhost:4000 from your browser.

Ready to run in production? Please check our deployment guides.

Learn more