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-----------------------------------------------------------------------------------
Australian datum transformations
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Based on material from:
Intergovernmental Committee on Surveying and Mapping (ICSM)
Permanent Committee on Geodesy (PCG):
Geocentric Datum of Australia 2020 Technical Manual
Version 1.0, 25 July 2017
Which is distributed under Creative Commons CC-BY 4.0
These tests will probably be useful as a template for an AU setup file, defining
transformations for Australian systems, but I'm reluctant to provide such a file
myself - it probably should come from official AU sources.
Thomas Knudsen, thokn@sdfe.dk, 2017-11-27
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<gie-strict>
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# GDA94 to GDA2020
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# Just the Helmert transformation, to verify that we are within 100 um
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operation proj=helmert \
convention=coordinate_frame \
x = 0.06155 rx = -0.0394924 \
y = -0.01087 ry = -0.0327221 \
z = -0.04019 rz = -0.0328979 s = -0.009994
-----------------------------------------------------------------------------------
tolerance 75 um
accept -4052051.7643 4212836.2017 -2545106.0245
expect -4052052.7379 4212835.9897 -2545104.5898
-------------------------------------------------------------------------------
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# GDA94 to GDA2020
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# All the way from geographic-to-cartesian-and-back-to-geographic
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operation proj = pipeline ellps=GRS80; \
step proj = cart; \
step proj = helmert \
convention=coordinate_frame \
x = 0.06155; rx = -0.0394924; \
y = -0.01087; ry = -0.0327221; \
z = -0.04019; rz = -0.0328979; s = -0.009994; \
step proj = cart inv;
-----------------------------------------------------------------------------------
tolerance 2 mm
accept 133.88551329 -23.67012389 603.3466 0 # Alice Springs GDA94
expect 133.8855216 -23.67011014 603.2489 0 # Alice Springs GDA2020
-------------------------------------------------------------------------------
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# ITRF2014@2018 to GDA2020 - Test point ALIC (Alice Springs)
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# Just the Helmert transformation, to verify that we are within 100 um
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operation proj = helmert exact convention=coordinate_frame \
x = 0 rx = 0 dx = 0 drx = 0.00150379 \
y = 0 ry = 0 dy = 0 dry = 0.00118346 \
z = 0 rz = 0 dz = 0 drz = 0.00120716 \
s = 0 ds = 0 t_epoch=2020.0
-----------------------------------------------------------------------------------
tolerance 40 um
accept -4052052.6588 4212835.9938 -2545104.6946 2018.0 # ITRF2014@2018.0
expect -4052052.7373 4212835.9835 -2545104.5867 # GDA2020
-----------------------------------------------------------------------------------
</gie-strict>
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