Graham McIntire
361b9dec5a
First step toward physics-based HF / sporadic-E scoring. Polls GIRO's DIDBase tabular endpoint every 10 minutes for two US ionosondes (Millstone Hill MHJ45, Alpena AL945), parses the plain-text response into observation rows, and upserts into a new ionosonde_observations table keyed on (station_code, valid_time). This gets foEs (E-layer sporadic critical frequency) into the database as a direct measurement — the key input for predicting 144 MHz Es openings via ITU-R P.534-6. foF2 + MUFD are the F2-layer inputs for HF MUF predictions. Not yet wired into scoring. Boulder/Wallops/Austin/Idaho/Point Arguello are in the GIRO catalog but were silent when probed — add them back if/when they come online. Next steps: SWPC JSON (Kp, F10.7, sunspot), GOES X-ray flux, D-RAP text, and the P.534-6 Es scoring factor that uses foEs at midpoint for the 144/440 band configs.
69 lines
2.4 KiB
Elixir
69 lines
2.4 KiB
Elixir
defmodule Microwaveprop.Ionosphere.GiroClientTest do
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use ExUnit.Case, async: true
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alias Microwaveprop.Ionosphere.GiroClient
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describe "parse_tabular/1" do
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test "decodes the real Millstone Hill fixture into observation maps" do
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body = File.read!("test/fixtures/giro/mhj45_sample.txt")
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assert {:ok, rows} = GiroClient.parse_tabular(body)
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# The fixture is 2026-04-15 16:00 → 19:00 UTC at 7.5-minute cadence,
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# so 25 observations.
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assert length(rows) == 25
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first = hd(rows)
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assert first.valid_time == ~U[2026-04-15 16:00:00Z]
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assert first.confidence_score == 60
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assert_in_delta first.fo_f2_mhz, 6.856, 0.001
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assert_in_delta first.mufd_mhz, 23.63, 0.001
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# foEs was missing ("---") at 16:00.
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assert first.fo_es_mhz == nil
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assert_in_delta first.fo_e_mhz, 3.50, 0.001
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assert_in_delta first.hm_f2_km, 217.2, 0.1
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# 16:07:30 has foEs == 3.42.
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second = Enum.at(rows, 1)
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assert second.valid_time == ~U[2026-04-15 16:07:30Z]
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assert_in_delta second.fo_es_mhz, 3.42, 0.001
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last = List.last(rows)
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assert last.valid_time == ~U[2026-04-15 19:00:00Z]
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assert_in_delta last.fo_f2_mhz, 7.400, 0.001
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end
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test "returns {:ok, []} for a body with only the header" do
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body = """
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# Global Ionospheric Radio Observatory
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# Location: GEO 42.6N 288.5E, URSI-Code MHJ45 MILLSTONE HILL
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#
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#Time CS foF2 QD MUFD QD foEs QD foE QD hmF2 QD
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"""
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assert {:ok, []} = GiroClient.parse_tabular(body)
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end
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test "returns {:error, :no_header} when the column header is missing" do
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body = """
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# some junk
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2026-04-15T18:00:00.000Z 80 7.113 // 23.00 //
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"""
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assert {:error, :no_header} = GiroClient.parse_tabular(body)
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end
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test "skips data lines whose token count doesn't match the header" do
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# Header declares 5 value columns (10 tokens after time+CS) but the
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# data row is truncated. Should be skipped rather than crashing.
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body = """
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#Time CS foF2 QD MUFD QD foEs QD foE QD hmF2 QD
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2026-04-15T18:00:00.000Z 80 7.113 //
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2026-04-15T18:07:30.000Z 80 7.088 // 22.76 // 3.35 // 3.13 // 246.0 //
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"""
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assert {:ok, [row]} = GiroClient.parse_tabular(body)
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assert row.valid_time == ~U[2026-04-15 18:07:30Z]
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end
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end
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end
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