SPOT vs. SRTM DEM Comparison

Well I’ve finally manged to get my hands on some SPOT DEM data for Cambodia for a project in the Southern Cardamoms. Quite an improvement over the SRTM (90m) data.  The SPOT DEM has a resolution of 30m at the equator. From Astrium:

A SPOT DEM is a digital elevation model produced by automatic correlation of stereopairs acquired by the HRS instrument on SPOT 5.

Unlike a digital terrain model (DTM), which describes the distribution of terrain or “bare earth” heights, a DEM includes “first surface” elevations including vegetation and man-made structures.

SRTM DEM Detail. Scale approx 1:75,000

SPOT DEM Detail. Scale Approx. 1:75,000

For more info see or please Contact Us

Read More

1 Comment

  1. Phil

    December 4th, 2014 at 1:07 am

    Would be highly interested in that data-set for a casual project, any ideas how “an indie developer” could get ahold of a copy for non-commercial/”no resale/reproduction” usage?

Leave a Reply

Launch of eBee X fixed-wing drone

Tweet Launched with the promise that “it’s not about the drone,” but instead about overcoming business challenges, the eBee X, part of the Parrot Business Solutions portfolio, is designed to boost the quality, efficiency and safety of an operator’s geospatial data collection. It offers a camera to suit every job, the accuracy and coverage capabilities to meet more »

Read More
View the Blog »

ArcGIS Server Basic Configurations

In case you've found ArcGIS Server configuration options confusing, here is a diagram of some basic configurations for an entry ...

Pan-sharpen Landsat 8 with ArcGIS 10

These instructions show you how to simply pan-sharpen Landsat 8 imagery using ArcGIS 10. The imagery is available for free ...