Other Height Data

Detailed measurements of the height of the ground and the structures on it can provide a new dimension to the understanding and management of the local, national or global environment.

Photogrammetric Digital Terrain Models (DTM) and Digital Surface Models (DSM) are available nationwide in a variety of formats to suit your application. Created photogrammetrically from our high-resolution aerial photography, our DSM provides a 2m grid of heights that includes surface features such as buildings and trees, whilst our DTM provides a bare earth model on a 5m grid.

Products available:

2m Digital Surface Model

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2m Digital Surface Model

Year: 2018

Resolution: 2m

Accuracy XY: ± Up to 1m rmse

Accuracy Z: ± Up to 1.5m rmse

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2m Digital Surface Model

This data was made available to APGB users from 1st April 2018, but has since been replaced by newer data.

DSM (Digital Surface Models) The Earth’s surface including buildings and vegetation, with a 2-metre grid spacing.

Resolution: 2m

Accuracy XY: ± Up to 1m rmse

Accuracy Z: ± Up to 1.5m rmse

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5m Digital Terrain Model

Year: 2020

Resolution: 5m

Accuracy XY: ± Up to 1m rmse

Accuracy Z: ± Up to 1.5m rmse

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5m Digital Terrain Model

Year: 2018

Resolution: 5m

Accuracy XY: ± Up to 1m rmse

Accuracy Z: ± Up to 1.5m rmse

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5m Digital Terrain Model

This data was made available to APGB users from 1st April 2018, but has since been replaced by newer data.

DTM (Digital Terrain Models) The Earth’s terrain excluding buildings and vegetation, with a 5-metre grid spacing.

Resolution: 5m

Accuracy XY: ± Up to 1m rmse

Accuracy Z: ± Up to 1.5m rmse

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