Trimble Catalyst failing to provide full Metadata

AndrewHargreaves2

Hello

I am experimenting with Trimble Catalyst and a Samsung S3 tablet with LTE. Sadly, I am not getting the full GNSS metadata for points collected using this service. My set up is below:

• Map is here
• FS is here - Spatial Reference: 4326. I created the GNSS metadata fields using the Python tbx here
• Maryland KeyNet VRS accessed through Trimble mobile Manager – this uses NAD83 2011
• Configured a location profile within Collector as shown in attached. Things to note about this:
  • firstly I set the ‘map coordinate system’ value to GCS WGS 1984 – which is the same as my FS
  • however, collector tells me “the map uses a different coordinate system than the location profile”
  • so I have to change it to WGS 1984 Web Mercator Aux Sphere

My results are below. I'm not getting anything for the blank metadata fields. Any help on the correct configuration would be appreciated.

Thanks

Receiver Name	Catalyst
Horizontal Accuracy (m)
Vertical Accuracy (m)
Latitude	40.05
Longitude	-75.48
Standard Deviation (m)	0.02
PDOP
HDOP
VDOP
Fix Type
Correction Age
Station ID
Number of Satellites
Fix Time	2/22/2018, 6:09 PM
Average Horizontal Accuracy (m)	0.55
Average Vertical Accuracy (m)	0.67
Averaged Positions	5
Altitude	132.69

 

 

AndrewHargreaves2

The answer is down to GPS Averaging being selected within Collector or not. The following GPS metadata values are recorded by Collector when using a configured feature service:

• Receiver name
• Latitude—Location before applying the specified location profile, including data transformations
• Longitude—Location before applying the specified location profile, including data transformations
• Altitude—Location before applying the specified location profile, including data transformations
• Fix time

If using a single GPS location to set a point's location, the following metadata values are recorded (but the below are not):

• Horizontal accuracy
• Vertical accuracy
• PDOP
• HDOP
• VDOP
• Fix type
• Correction age
• Station ID
• Number of satellites

If performing GPS averaging to set a point's location, the following metadata values are recorded (but the above are not):

• Average horizontal accuracy
• Average vertical accuracy
• Number of positions averaged
• Standard deviation

  An indication of the variation in distance between your final, averaged location and each individual location recorded during averaging. A high value indicates your position was influenced by outliers.