Using Weighted Average in TopSURV

You can use the weighted average function in TopSURV if you repeat an observation on a point in topo by using the same point number. I will generally use this feature when setting control with RTK. 

1. Make an observation on your control point. I recommend collecting an average of 30 epochs or more. 

2. After logging your point make a second observation on the same point using the same point number.

3. When prompted select Use as a Check point, Use in weighted average.

If you use more than two observations you can throw out any outliers in the weighted average tab.

From the TopSURV User Manual: The WA (Weighted Average) tab appears on the Edit Point screen if the point has check points which are used in a weighted average. To exclude a station from a weighted average, highlight the station. Use the Exclude from WA / Use in WA button to exclude / include the highlighted station in averaging.

>See this walk through video 

TopSURV Configurations

Here are a few TopSURV configuration walk throughs for my Military survey friends using the equipment listed below. If you have any questions, comments, or corrections needed drop me a line.

GR-3 Post Processing (Static)

GR-3 Internal Radios (RTK)

GR-3 with TRL-35 (RTK )

GPT-9000 Robotic Configuration (RC-3)

GPT-9000 Conventional/Reflectorless Configuration

DL-101C Auto Level Configurations