Palmerston North 0.125m Urban Aerial Photos Index Tiles (2022)

Palmerston North 0.125m Urban Aerial Photos Index Tiles (2022)

Toitū Te Whenua Land Information New Zealand

2022

Index Tiles ONLY, for actual orthophotos see layer [Palmerston North 0.125m Urban Aerial Photos (2022)](http://data.linz.govt.nz/layer/111539)

Orthophotography within the Manawatū and Palmerston North City Districts Region captured in March 2022. Coverage encompasses Palmerston North city and outlying urban areas.

Imagery was captured for Palmerston North City Council by Aerial Surveys Ltd, Unit A1, 8 Saturn Place, Albany 0632, New Zealand.

Data comprises:
• 1064 ortho-rectified RGB GeoTIFF images in NZTM projection, tiled into the LINZ Standard 1:1000 tile layout.
• Tile layout in NZTM projection containing relevant information.

The supplied imagery is in terms of New Zealand Transverse Mercator (NZTM) map projection.

Imagery supplied as 12.5cm pixel resolution (0.125 m GSD), 3-band (RGB) uncompressed GeoTIFF. The final spatial accuracy is ±0.2 at 95% confidence level in clear flat areas.

Project

Aerial photography was captured over Palmerston North city and outlying urban areas in the
Manawatū and Palmerston North City Districts totalling approximately 330 km 2 . The area is located in the Manawatū-Whanganui Region of the North Island.

Data Acquisition


The aerial photography for this project was captured on the 01/03/2022





Camera and Flyng Height
All photography was captured using Vexcel's digital UCE camera fitted with the 100 mm lens and
flown at an altitude of approximately 7,887 ft (2,404 m) with the lowest ground GSD set at 0.125 m.



Sun Angle

Imagery captured with a minimum sun angle of +40 degrees. The sun angle of the imagery used for the orthorectification ranged from 54.4 to 57.2 degrees.





Flight Planning

The flight survey number for this project is SN14242
The standard flight plan is named ‘Palmy North Urban 12-5cm UCEV2’ and comprises 14 runs, 392 frames. Imagery captured in stereo: forward overlap 60%, min 54%; side overlap 35%, min 15%. The increased overlap flight plan is named ‘Palmy 80x80 12-5cm UCE V2’ and comprises 4 runs, 27 frames. Imagery captured in stereo: forward overlap 80%; side overlap 80%.

Environmental Specification

Imagery captured with no cloud or cloud shadow within the area of interest.
Urban 0.125 m GSD imagery – using the UCE camera and by flying with 60% forward overlap and with 35% sidelap (standard stereo coverage) will achieve ~1 m building lean per 3 m height in the corners of the imagery used. Flying with 80% forward overlap and with 80% sidelap (increased stereo coverage over CBD and hospital areas) will achieve ~0.37 m building lean per 3 m height in the corners of the imagery used. Tall structures inwards of the corner of the frame will have less lean the closer to the nadir they are.





Ground Control


A combination of existing control and LINZ benchmarks were used for aerial triangulation for this
project.

-40.46853275940255 175.5105958869632 -40.24161032890908 175.80056104980878

https://data.linz.govt.nz/layer/111483-palmerston-north-0125m-urban-aerial-photos-index-tiles-2022/

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