SURVEYING TOOL
grp 5 NRAW
SURVEY NETWORK ADJUSTMENT
Turn observations into defensible coordinates.
Adjust traverses and levelling runs, inspect residuals and variance, then export a ready-to-share Excel workbook.
Weighted least squares
FIELD KIT
The instruments behind the observations.
Connect your field equipment to the adjustment workflow: capture clean observations, then let the network expose the most defensible result.
04common devices
Adjustment type
01 / INPUTS
Control & observations
Traverse observations
Azimuths are clockwise from north. Use one row per leg.
| From | To | Distance (m) | Azimuth (°) | σ distance | σ azimuth (°) | Remove |
|---|
Levelling observations
Enter observed height differences and their standard deviations.
| From | To | ΔH (m) | σ height (m) | Length (km) | Remove |
|---|
02 / RESULTS
Adjustment report
Your report will appear here
Run an adjustment to inspect residuals, variance, adjusted values, and uncertainty.
Iterations—
Initial closure—
Final weighted RMS—
Variance factor—
Max correction—
Adjusted coordinates
metres| Point | Easting | Northing | ΔE | ΔN |
|---|
Residuals
distance and angle| Leg | v distance (m) | v azimuth (″) | Standardized |
|---|
Error ellipse
1σ uncertainty| Point | σE (m) | σN (m) | Semi-major | Semi-minor | Orientation |
|---|
Iteration log
| Iteration | Weighted RMS | Max correction |
|---|
Adjusted elevations
metres| Point | Elevation | ΔH correction | σ height |
|---|
Residuals
height differences| Leg | From → To | Residual (m) | Standardized |
|---|
Error ellipse
1D network: vertical uncertainty band| Point | Elevation | σ height | Approx. 95% band |
|---|
Iteration log
Direct weighted solution| Iteration | Weighted RMS | Max correction |
|---|
f(x)
Excel-readyWhat the sheet solves
The workbook reports residuals, variance, adjusted values, and coordinate uncertainty from a weighted least-squares model.