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Realtime GPS heading not found
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Hi all,
anyone with experience with displaying a realtime GPS position using the GPS toolbar? We have it setup so position works fine. Just ArcMap refuses to interpret heading, so the realtime icon cannot rotate according to heading.
Will describe our setup as short as possible and add some screenshots. Any hints welcome!
We're on a vessel, doing offshore exploration. We use dive robots for this (ROVs). They get tracked pretty precise by underwater sonar vessel systems and their positioning is handled by a specific software (in our case: Fugro's Winfrog 3.1).
Being able to display the ROV in realtime in a "rich data context" as ArcMap allows is important for us. So Winfrog now outputs a NMEA compatible (I hope!!) string to ArcMap over network (virtual "COM132"). The string is detected fine by ArcMap (10.1 in use), position, date and time come in fine, just heading not. I attached screenshots of the Winfrog string config, the string setup in ArcMap and the position window in ArcMap, showing "N/A" for heading. Regarding the various Winfrog config options: I'm very sure we tried all variations for the position string etc. in the past, currently cannot verify since I do not have access to the live system.
The string as configured by Winfrog comes in in sets of 3 rows like shown below. (small edits for this forum and better readability include masking of real lats and longs, added comments as my interpretation of string elements, and the dashed lines as visual separators for the string "blocks". In real, string has real lat/longs, no comments, no dashed lines of course):
$GPGLL,LAT.3944,N,LON.1335,W,073245.88,A |Lat, S/N, Lon, E/W, Time, A = Valid
$GPHDT,063.6,T |Heading, True (?)
$GPZDA,073246.40,08,03,2019,00,00 |Time, Day, Month, Year, ?, ?
--------
$GPGLL,LAT.3945,N,LON.1335,W,073247.13,A
$GPHDT,064.3,T
$GPZDA,073247.42,08,03,2019,00,00
--------
$GPGLL,LAT.3944,N,LON.1334,W,073248.13,A
$GPHDT,064.3,T
$GPZDA,073248.40,08,03,2019,00,00
(captured by Hyperterminal)
As said: Any ideas for what we do wrong and how to make heading work: welcome!
Thanks in advance,
Gerhard
