We use a variety of sensors, either airborne or satellite or a combination of both. Which is best depends upon the nature of the project. Multiple sensors may be needed to complete a project in order to best respond to your needs.
We can also make recommendations about in situ ground or water sampling programs in support of a remote sensing project.
Here are just a sample of your sensor options:
Low resolution, wide coverage multispectral
Moderate resolution multispectral and thermal
High resolution multispectral