Making Sense of Remote Sensing

Different types of terrain data and how they can be used to generate three-dimensional maps at farm and field level.

Drone imagery is frequently used to calculate vegetation indices - such as the normalized difference vegetation index (NDVI) - to...

The study showed that, with the aid of satellite remote sensing, water use can be linked to specific land uses.

"Be cautious of the fact that aerial and drone imagery are generally not well calibrated. Any outputs of quantitative analyses (e.g....

One of my MSc students, Barry Watkins, is working on a technique to automatically extract agricultural field boundaries from Sentinel-2...

Below is a colour image captured by the Sentinel-2 satellite on 20 February 2019. The image covers an active fire near Franschhoek, South...

I am often asked about what resolution imagery is best for monitoring agricultural crops. This may seem like a simple question, but the...

Many farms are too large to monitor using traditional "feet-in-field" inspections. In this article I give a short overview of a remote...

The use of drones, or unmanned aerial vehicles (UAVs), for agricultural applications is rapidly increasing. Unfortunately, the popularity...

Remote sensing and geospatial technologies can also help with other aspects of farming. For instance, in this video a 3D model was...

I was playing around with some Sentinel-2 images and accidentally created this image (if you are interested in the technical stuff, see...

In an earlier article I explained that remote sensing – within the context of earth observations – is the practice of deriving...

In laymen's terms, remote sensing (RS) is the process whereby information of an object, or many objects, is collected from afar, i.e....