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3.73 Description of Header Titles in Log File
The following table provides descriptions for all headers produced in the EcoMapper’s log file.
Header Titles
Description
Latitude
Current latitude position
Longitude
Current longitude position
Time
Current time
Date
Current Date
Num of Sats
Number of GPS satellites (The higher number of satellites
the more accurate the GPS position)
GPS Speed Knots
GPS estimated speed of the vehicle on the surface
GPS True Heading
GPS estimated heading of the vehicle on the surface
GPS Magnetic Variation
GPS calculated Magnetic variation (Magnetic variation
is the heading error between the Earth‟s magnetic north
and true north)
HDOP
Horizontal Dilution of Precision (HDOP) provides the
accuracy of GPS
C Magnetic Heading
Magnetic heading of the compass
Pitch Angle
Pitch Angle of the compass
Roll Angle
Roll Angle of the compass
C True Heading
True Heading of the compass
C Inside Temp
Temperature of the compass
DFS Depth (ft)
OR
DFS Depth (m)
Depth From Surface (DFS), is calculated from the
pressure transducer
DTB Height (ft)
OR
DTB Height (m)
Depth To Bottom (DTB), is calculated from the depth
sounder
Total Water Column (ft)
OR
Total Water Column (m)
Total Water Column is DTB and DFS added together
Batt Percent
Battery percentage left on the vehicle
Power Watts
Current power the vehicle is using
Watt-Hours
Remaining battery capacity
Batt Volts
Present voltage the vehicle is using
Batt Ampers
Present current the vehicle is using
Batt State
Battery State: D = Discharging C = Charging F = Fault
Time to Empty
Time (minutes) until batteries are empty
Current Step
Current waypoint of the vehicle
Dist To Next (m)
Distance to the next waypoint in meters
Next Speed (kn)
Next waypoint speed in knots
Current Speed (kn)
Current Speed of the vehicle calculated from the DVL
Motor Speed CMD
Motor commanded speed, which is inherited from the
Speed.ini file
Next Heading
Heading goal towards target waypoint
Next Long
Next waypoint longitude
Next Lat
Next waypoint latitude
3.7