APEM use specialist cameras mounted on twin-engine aircraft to undertake large-scale mapping projects for linear assets and route analyses.

We can generate topographic 2D and 3D outputs over large distances, making our approach ideally suited to linear route mapping.

APEM are a global leader in aerial survey corridor mapping of natural and human-made linear features. Clients from the utility and construction industries have commissioned us to undertake aerial surveys of their existing linear assets and to map out proposed routes for new installations.

Key uses of aerial survey corridor mapping include:

Water pipeline surveys for leakage detection: identifying leaks in underground pipelines using our multispectral camera systems.

LiDAR corridor surveys for asset mapping: our LiDAR system attains detailed topographic data for Rights of Way and other route corridors, as well as accurately mapping above-ground features including buildings, pylons and transmission lines.

Topographic surveys for route optimisation and cable route surveys: a powerful 3D tool to investigate proposed route options, with topographic data and high-resolution imagery flagging up obstacles to construction.

Earthworks calculations for new infrastructure projects: highly accurate 3D data to manage volumes such as stockpiles, embankments and cuttings on construction projects.

Vegetation risk assessment for overhead transmission lines: mapping the proximity of vegetation to overhead transmission lines and identifying trees posing a strike risk to the network.

Buried pipeline detection: our multispectral sensors can map the location of pipelines buried several feet below the ground.

River habitat surveys and restoration works, mapping fish spawning habitats within river channels, identify invasive species and create 3D models of floodplains and river banks.

Benefits of aerial surveys for linear asset mapping

Using our specialist sensors and data processing technology we capture LiDAR and/or ultra-high resolution imagery in multiple wavebands from RGB to near-infrared, at a resolution greater than 3 cm Ground Sample Distance (GSD).

The data is used to generate high density topographic datasets such as point clouds, digital surface models and digital terrain models, as well as creating accurate ortho-mosaics, photo-realistic 3D models and 3D virtual flyovers.

Our sensors survey tens of kilometres of linear assets in a single day – including remote or inaccessible areas – allowing us to provide a snapshot of an entire project from a single survey.

APEM’s innovative approach to corridor mapping removes delays caused by land ownership and access issues, and also brings significant health and safety benefits for our clients by minimising the number of ‘boots on the ground’.

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