GNSS vendors have all the information they need to generate the output file to enable users to import the data into OPUS Project 5.0. What’s important is that it can be read by machines so the information can be incorporated into software programs. XML was chosen because it was designed to carry and store data in plain text format, it is easy to expand and/or upgrade to new operating systems, and it can be read by both humans and machines.Ī sample GVX file can be obtained by clicking on the link titled “ Example of GVX file, project day 066, day 052, day 053, day 054.” As NGS states in the documentation, the output can be read both by humans and machines. GVX has been written in extensible markup language (XML). The format is meant for any type of GNSS vector, whether it was derived in real-time or from baseline post-processing. The file format includes all of the necessary data of a GNSS vector for inclusion in a survey network for least squares adjustment, as well as metadata which describes the vector. GVX aims to provide a standard format for exchanging GNSS vectors derived from varying GNSS survey methods and manufacturer hardware.
To this end, this document proposes a new standardized file format known as the GNSS Vector Exchange Format (GVX). NGS designed the format so that it included all of the necessary data (including metadata) of a GNSS vector for incorporation into a survey network for performing a least-squares adjustment. Basically, GVX is a standardized format for exchanging GNSS vectors derived from GNSS survey data using any manufacturer hardware and software results (see the box titled “Excerpt from Documentation of GVX”).
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