Diagnostics; Figure 55: Posview Gnss Data - Applanix POS MV V5 Installation And Operation Manual

POS MV V5 Installation and Operation Guide
Tools
and Diagnostics

Figure 55: POSView GNSS Data

The GNSS Data window shows the GNSS navigation status in a polar style display. POSMV generates
an identification number for each satellite in use and indicates its location in the sky, with the centre of the
display directly overhead. From this display, a person can deduce if a satellite signal is being blocked.
The bottom of the window displays a list of the satellites in solution and includes details of their Signal-to-
Noise Ratios (SNR) at the important L1 frequency (L1 SNR). Low SNR values for all satellites could
indicate deterioration in the quality of the GNSS antenna cable. The window will show the L2 SNR for
L1/L2 GNSS, if fitted.

Diagnostics

POS MV provides both control and display diagnostic functions. The control functions permit the selection
and setting of various binary outputs to specific values. The display functions allow the viewing of real-
time parameters. This provides POS MV with a debugging function that can be used to establish a
successful integration of the system into an extended suite of survey equipment.
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