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Fix parsing mixed navigation messages from IGS and add test case. #119

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Fix parsing mixed navigation messages from IGS and add test case. #119

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2 changes: 2 additions & 0 deletions src/georinex/nav3.py
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Original file line number Diff line number Diff line change
Expand Up @@ -232,6 +232,8 @@ def _sparefields(cf: list[str], sys: str, N: int) -> list[str]:
elif sys == "I":
if N == 28:
cf = cf[:28]
if N == 26: # Only one middle spare field
cf = cf[:22] + cf[23:26] + cf[27:28]

if N != len(cf):
raise ValueError(f"System {sys} NAV data is not the same length as the number of fields.")
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Binary file added src/georinex/tests/data/BRDC00IGS_R_20250570000_01D_MN.rnx.gz
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18 changes: 18 additions & 0 deletions src/georinex/tests/test_nav3.py
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Expand Up @@ -48,6 +48,24 @@ def test_spare(fname):
assert (G01["FitIntvl"] == approx([4.0, 4.0])).all()


@pytest.mark.parametrize(
"fname",
[
"BRDC00IGS_R_20250870000_01D_MN.rnx.gz",
"BRDC00IGS_R_20250570000_01D_MN.rnx.gz",
],
)
def test_mixed_igs(fname):
"""
Test for mixed IGS files with multiple systems if all spare fields are detected
"""
fn = ir.files(f"{__package__}.data") / fname
nav = gr.load(fn)

assert isinstance(nav, xarray.Dataset)
assert set(nav.svtype) == {"C", "E", "G", "R", "I", "S", "J"}


@pytest.mark.parametrize("fname", ["ELKO00USA_R_20182100000_01D_MN.rnx.gz"])
def test_mixed(fname):
fn = ir.files(f"{__package__}.data") / fname
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