More on GPS Visualizer: GE Overlays

I did some experiment with GPS Visualizer which I mentioned yesterday. I used it to visualise some Landsat images that I can use for my research.



In this screenshot you can see three overlays generated from Landsat visual images provided by [Jet Propulsion Laboratory, NASA](http://photojournal.jpl.nasa.gov/targetFamily/Earth). If you take a closer look at places where these images overlap you will find that the quality of registration is very impressive. However, GPS Visualizer seems not able to control the skewness of the image, all overlays are rectified to the latitude and longtitude, which is not the direction of Landsat's nadir path (shown in the image as a white line). Anyway, using it I can get an idea of the satellite coverage of my study area (red box) without using complicated GIS/RS software packages.

GPS Visualizer

[GPS Visualizer](http://gpsvisualizer.com/)


This is an essential for geography hobbists and serious GE users. Without a flashy interface (yet?), this site provides a rich set of tools to help you visualise geographic data on Google Maps and Google Earth. Haven't got time for all its features, but the first thing I am going to do with it is to create a Landsat overlay of my study area. More details in later posts.