top of page

Multispectral surveys have the capacity to detect sub-surface features with archaeological potential.

This method uses a camera array equipped with multiple sensors to acquire data invisible to the human eye across the electromagnetic spectrum. When sub-surface features impact the overlying ground, they may be detected following a multispectral survey.

 

A series of raster transformations can be performed using GIS and interpreted in a detailed report to discuss the findings.

​

For survey areas covered in vegetation, the reflectance shown by the multispectral represents the amount of chlorophyll within the plants. This is indicative of the plants’ health which may be influenced by sub-surface features.

 

For stripped or bare earth survey areas, the reflectance can represent soil organic carbon, soil moisture, or soil texture/density.

 

For example, where a feature such as a filled ditch is present, the reflectance will be different to that of the soil either side and will be represented as different colours following raster transformations. Nuances such as re-cuts and multiple fills, which would otherwise be difficult to see using RGB or with the naked eye, have the potential to be mapped.

 

RGB photogrammetry is carried out alongside multispectral to provide general mapping and identify possible earthworks. A GIS interpretive report is essential to understanding the results from a multispectral survey.

interpretive-report.png

Above : Interpretations figure from an interpretive report for an RGB and multispectral survey.

ArrowBackgroundLong.png
SideStripes.png

FREE SURVEY QUOTATION

 

Receive a FREE Survey quotation from one of our survey engineers?

 

Chat through any requirements you need, including site survey, survey methodologies and detail requirements.

Aerial Surveys
 

Aerial 
Survey

Aerial
Survey

Renewable 
Survey

Renewable
Survey

Archaeological Survey

Archaeological Survey

Roof 
Inspection

Roof
Inspection

Asset 
Inspection

Asset
Inspection

Thermal 
Surveys

Thermal
Surveys

Building 
Recording

Building
Recording

Topographic 
Surveys

Topographic
Surveys

Landscape 
Survey

Landscape
Survey

Water Leak Detection

Water Leak Detection

Multispectral Survey

Multispectral Survey

bottom of page