Posted on January 9th, 2018

Featured Satellite – 2.5/3.5-meter ZiYuan-3 (ZY-3): A Stereo Collecting Beast!

Are you in need of stereo satellite imagery but hate having to look through a plethora of hard-to-use search engines in the process? Do you wish you could also search for stereo coverage after already looking at mono imagery results for a given area, without having to leave the search engine you have open?

If these issues sound familiar or you just need a wider array of archived stereo data, then ZY-3 stereo imagery is the solution for you!

A 3.5-m panchromatic ZY-3-01 image collected over Death Valley, California, USA on March 25, 2016. This image has been processed by Apollo Mapping for improved clarity and sharpness. (Image sample courtesy Space View, copyright 2017)

Apollo Mapping is excited to announce the addition of ZiYuan-3 stereo results to our already diverse collection of satellite imagery options in our online search engine, Image Hunter. Stereo imagery from ZY-3 is an ideal solution for you as it has both large footprints and extensive archive dating back to 2012 with extensive global coverage. ZY-3 is a two satellite constellation of nearly identical sensors providing 2.5-meter (m) and 3.5-m panchromatic optical stereo pairs – as well as 2.1-m panchromatic and 5.8-m multispectral mono imagery.

As an added bonus, we also offer reasonably priced 7-m digital elevation models (DEM) extracted from ZY-3 stereo pairs. Our ZY-3 DEMs are available as both digital surface models (DSM) where surface features such as vegetation and human structures remain visible; and as digital terrain models (DTM) where the surface features found in a DSM have been removed so that elevations represent the bare earth below.

If you would like to find out more about ZY-3 stereo, you can check out our website here; or if you have a specific request for a project you are working on, let us know at sales@apollomapping.com and we would be happy to locate coverage and price out the data.

Key ZY-3 Constellation Specifications At-a-Glance:

  • Launch Date: January 9, 2012 (ZY3-01), May 30, 2016 (ZY3-02); two satellite constellation of similar but not identical sensors
  • Mono Sensor Resolution:1-m panchromatic & 5.8-m multispectral (blue, green, red and near-infrared [NIR]), at-nadir
  • Stereo Sensor Resolution:5-m panchromatic (ZY3-01), 2.5-m panchromatic (ZY3-02); plus 2.1-m at-nadir panchromatic image (commonly collected with stereo but not always)
  • Stereo Footprint Size: 52 kilometers

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