C-Nav7050 User Guide
Revision 0
Page 9 of 27
10/30/2020
Section 1 - Overview
Introduction
The C-Nav7050 is designed to select primary and secondary dGNSS
corrections, and to automatically switch between them. The complete assembly
is designed to meet Petrobras Annex V requirements.
Annex V requires that RTCM104 correctors from several sources be interfaced
to the GNSS receivers. Since the receiver has only a single RTCM104 input this
selection must be done externally.
There are three sources of RTCM104 corrections available, one is from a
system of UHF transmitters located on offshore platforms, one from shore
located IALA beacon transmitters and a third from an auxiliary source. In some
locations, more than one UHF station can be received. It is also required to be
able to switch from one UHF source to another. The user can select any of the
sources as primary and another as secondary.
Table 1 shows a list of supplied equipment for the C-Nav7050. Tables 2 shows
a list of optional equipment. The optional equipment will have already been
installed by qualified C-Nav technicians. Note that the C-Nav7050 can supply
correction to two GNSS receivers at the same time. These can be the same or
different types.
Figure 1: C-Nav7050 Front View
