VideoRay SeeByte Reacquire and Identify CoPilot, Руководство оператора

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20. Close the Engine Room.
21. Check the calibration against known source.
Support for the Vector Nav compass requires VideoRay Cockpit version 1.8.35 or higher and ROV firmware version 2.6.4 or
higher.
ROV GPS Filter
For best results with VideoRay CoPilot RI, the GPS Filter should be tuned to optimize its performance in your local conditions. The
GPS filter can be found in VideoRay Cockpit.
The remainder of this page is an expert from the Pro 4 Operator's Manual. For more information and context, see the Pro 4 Operator's
Manual .
ROV GPS Instrument
The ROV GPS instrument provides ROV location, status and filter settings for the ROV GPS.
The GPS data is only valid when the ROV is at the surface and the GPS antenna is exposed.
Display
Use
The ROV GPS instrument will display the current location and status of the ROV GPS. It also has the ability to set filter criteria that
control whether the GPS information is passed from VideoRay Cockpit to other applications.
Position
The Latitude and Longitude of the GPS fix is displayed in the top center of the instrument.
Status
Good ­ Data is being received and passed. If the Toggle Filter is On, the GPS has passed all filter criteria.
Bad ­ Data is being received, but the data does not pass at least one of the filter criteria (see below).
No ­ No Data is being received.
The number of satellites being observed is indicated by blue indicator lights.
Filters
Filters allow for better operational performance by eliminating GPS fixes that are based on poor data and have a greater degree of
uncertainty. These filters can suppress apparent jumps in the reported location due to such erroneous data. Each filter is defined by a
slider that represents a cutoff threshold. The cutoff threshold is set by moving the slider left or right on a scale. The value of the cutoff
threshold is displayed as a tool tip when the mouse is hovered over the slider. The value of the data being received is displayed as a
bar on a scale. If the value is good, the bar is green. If the value does not meet the cutoff threshold, the bar is red.
Filter Settings
SNR (Signal to Noise Ratio) ­ The strength of the actual signal relative to background noise. Higher SNRs mean that the
signal is stronger, which usually implies a better result. The SNR threshold setting should be set to 30 initially. If the SNR is
below the threshold, the GPS information will not be passed.
Speed (Knots) ­ The maximum ground speed of the vehicle based on successive GPS readings. The speed threshold setting
should be set to the maximum expected speed of the vehicle ­ typically 1 knot. If the Speed is above the threshold, it is
assumed that the GPS information is invalid and the GPS information will not be passed.
HDOP (Horizontal Dilution of Precision) is a measure of the impact of the geometry of the observed satellites on the quality of