PZ-90 (short for ''Parametry Zemli 1990 goda'', in russian: Параметры Земли 1990 года) is a
geodetic datum
A geodetic datum or geodetic system (also: geodetic reference datum, geodetic reference system, or geodetic reference frame) is a global datum reference or reference frame for precisely representing the position of locations on Earth or other plan ...
defined for use in the
GLONASS
GLONASS (russian: ГЛОНАСС, label=none, ; rus, links=no, Глобальная навигационная спутниковая система, r=Global'naya Navigatsionnaya Sputnikovaya Sistema, t=Global Navigation Satellite System) is ...
system.
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Revisions
PZ-90.02
Creation date - 2005; Epoch - 2002.0; Absolute positional accuracy - from 0.3 to 0.5 m; Relative positional accuracy - from 2 to 3 cm
[
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PZ-90.11
Creation date - 2011; Epoch - 2010.0; Absolute positional accuracy - 5 cm; Relative positional accuracy - from 0.5 to 1 cm
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PZ-90.11 is described as "closest to ITRF2000" by the ESA's Navipedia. It converts to ITRF2008 with only a shift vector; no rotation or scaling is needed.
[{{cite web , title=Reference Frames in GNSS , url=https://gssc.esa.int/navipedia/index.php/Reference_Frames_in_GNSS , website=Navipedia]
References
*
GLONASS
Geography of Russia