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This tag is associated with 8 posts

4 Day Course on Radar Remote Sensing: 20-24 April

I am now making my Introduction to Radar Remote Sensing training course available to outside participants. This popular MSc module is intended to provide an introduction to the techniques used in radar remote sensing. With the increasing availability of satellite radar data it is becoming more important than ever to know how these systems work and to … Continue reading

“Introduction to Microwave Remote Sensing” – now an eBook

In 2005 I published my Introduction to Microwave Remote Sensing (http://www.amazon.com/dp/B00U4D8EJM).  It is now available as a Kindle eBook. At the moment, the eBook is simply a PDF replica of the print book, but because I have self-published it via Speckled Press, I have managed to keep it <$10, which is a substantial saving compared to … Continue reading

An extract from my eBook: “Chapter 4: Two things that gives remote sensing a bad name”

Here is an extract from my recent eBook, Thirteen Short Chapters on Remote Sensing.  It is the first part of “Chapter 4: Two things that can give remote sensing a bad name”.  I thought it contentious enough to post as a blog entry to generate a bit of discussion.   It also links back to previous … Continue reading

Why One Branch Size Dominates Radar Backscatter

Warning: technical post for geeky radar folks! There is a common rule of thumb that I have often seen presented that states that the radar backscatter from a forest canopy mostly originates from scattering elements that are similar in size to the wavelength being used.   Sometimes this is explained through attenuation effects of a full-cover … Continue reading

Ceci n’est pas un arbre

To abstract the real world –  to “move away from the concrete world and move towards ideas and concepts” (Khan Academy lecture of “Abstract”) – is a skill shared by both artists and scientist. It is neatly illustrated in the process of abstracting trees for modelling satellite observations. In the science of remote sensing of forests we … Continue reading

A brief history of radar remote sensing

I’ve discovered Verite Timelines.   I’ve created a timeline on the history of radar based on the history section of my book.   You can view it here: http://www.geos.ed.ac.uk/homes/ihw/timeline.html#top

Further comment on “Radar backscatter is not a ‘direct measure’ of forest biomass”

As a group of scientists at the universities of Edinburgh and Maryland, and the FAO UN-REDD Programme, we’ve just published a short piece in Nature Climate Change magazine entitled “Radar backscatter is not a ‘direct measure’ of forest biomass”. The focus of this correspondance is “to contest the use of the term ‘direct measurement’ to … Continue reading

Do we really understand the backscatter-biomass curve?

To misquote Muhammad Ali:  Anyone who views the world the same at forty five as he did at thirty has wasted fifteen years of his life. When I was thirty I used to explain the radar backscatter-biomass curve like this: When radar backscatter is plotted against forest above ground biomass[1], there is a good positive … Continue reading

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