PROJECT DESIGN ACCURACY Project specifications and technical processes were designed to achieve data accuracies as follows: *Orthophotos* Measured Point +/- 0.15m Basis of Estimation: Project design
*Control* Measured Point +/- 0.15m Basis of Estimation: Survey methodology used
NOTES ON EXPECTED ACCURACY Values shown are at 90% confidence interval.
LIMIATIONS OF DATA Field/survey validation has not been undertaken
DATA VALIDATION Imagery in the volume has been compared to control points obtained by field survey that were also used in the aero-triangulation process. The points were distributed across the area. Comparison of the field points with positions measured on the imagery result in: No. of sites: 6 RMS X (m) 0.04 RMS y (m) 0.03 XY RMS (m) 0.05 90% Accuracy (m) 0.08 Required Accuracy (m) 0.15
SOURCE DATA Item, Source, Description, Ref No, Date Sensor, AAM, A3, PRJ37987, 28/12/2020 - 30/01/2021 GPS Base Data, GeoNET, CORS, PRJ37987, 28/12/2020 - 30/01/2021 Base Stn Coords, LINZ, Static RTK, PRJ37987, 28/12/2020 - 30/01/2021 Field Survey, WSP, RTK GPS, PRJ37987, 16/02/2021
DATA CHARACTERISTICS Device Name: A3 Resolution: 5 cm Type: 8-bit RGB File Format: GeoTIFF Map Projection: NZTM Spatial Accuracy Specification: 0.15m Capture Constraints: >40 egrees sun angle