# Commission Delegated Regulation (EU) 2017/79 of 12 September 2016 establishing detailed technical requirements and test procedures for the GB type-approval of motor vehicles with respect to their 112-based eCall in-vehicles systems, of 112-based eCall in-vehicle separate technical units and components and supplementing and amending Regulation (EU) 2015/758 of the European Parliament and of the Council with regard to the exemptions and applicable standards (Text with EEA relevance), Division 2.2.2.7

Extent: E+W+S+N.I.

Calculate the systematic inaccuracy of coordinate's determination on stationary intervals according to formulas (1), (2), for example for latitude coordinate (B):
(1)
ΔB(j) = B(j) – Btruej ,
(2)
dB=1N×∑j=1N ΔBj,
Btruej is the actual value of B coordinate in j time moment, in arc-seconds.
B(j) is the determined value of B coordinate in j time moment by the GNSS receiver, in arc-seconds.
N is the amount of GGA (RMC) messages, received during the test of GNSS receiver.

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Source: https://www.legislation.gov.uk/eur/2017/79/annex/VI/division/2/division/2.2/division/2.2.2/division/2.2.2.7 (the official version)
Page: https://openlegislation.uk/eu-regulation-2017-79/annex-VI/division-2/division-2.2/division-2.2.2/division-2.2.2.7
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.