ZiYuan-3

ZiYuan-3 is a dedicated stereo satellite constellation with impressive 2.5-m to 3.5-m stereo and 2.1-m 4-band multispectral imagery.

Browse Satellites

ZiYuan-3 Satellite Imagery Samples


Click on the expand button for a larger view of each image. You can also right-click and save any of the examples to your computer for a full resolution view.


The ZiYuan-3 Advantage

High-Quality Stereo Data

Built for high-quality data with low distortion, ZiYuan-3 stereo imagery creates pristine digital elevation models (DEMs).

Impressive Stereo Swath Width

An industry-leading swath width of 52-kilometers ensures large areas are collected in a single stereo pass.


Overview & HistoryZiYuan-3 SpecificationsPricing

ZiYuan-3 is the first commercial, stereoscopic satellite launched by China. It was constructed by China’s Academy of Space Technology and launched on January 9, 2012 from the Taiyuan Satellite Launch Center. The second, similar satellite in the constellation was launched on May 30, 2016. Both ZiYuan-3 satellites are equipped with sensors collecting 2.1-meter (m) panchromatic and 5.8-m 4-band multispectral (i.e. blue, green, red and near-infrared [NIR]) mono imagery; as well as 2.5-m to 3.5-m panchromatic stereo imagery.

ZiYuan-3 is ideal for topographic mapping, tracking land use, urban planning and disaster management with its 52-kilometer swath width and stereo imaging capabilities. Since its launch in 2012, ZiYuan-3 has collected large swaths of up to 2.5-m resolution stereo data for the production of detailed digital surface models (DSMs) and digital terrain models (DTMs).


Launch Details

  • Launch Date: January 9, 2012 (ZY3-01), May 30, 2016 (ZY3-02); two satellite constellation of similar but not identical sensors
  • Vehicle: Long March 4B
  • Site: Taiyuan Satellite Launch Center, Shanxi province, China


ZiYuan-3 Components

  • Satellite Mass: 2,636 kg
  • Onboard Storage Capacity: 1 terabyte
  • Ground Communication Systems:
    • Imagery downlink – 2 x 450 Mb per second


Orbit Characteristics

  • Altitude: 506 km
  • Period: 97.716 minutes
  • Inclination: 97.42°
  • Direction: sun-synchronous orbit, north to south (across the lit side of Earth)
  • Equatorial Crossing Time: 10:30 local time (approximate; across lit side of Earth)
  • Revisit Frequency: within 5 days, global average


Imaging System

  • Spectral Bands:
    • Panchromatic
    • 4-band multispectral (blue, green, red and NIR)
  • Sensor Resolution:
    • Mono (at nadir) – 2.1-m panchromatic & 5.8-m multispectral (MS)
    • Stereo – 3.5-m panchromatic (ZY3-01), 2.5-m panchromatic (ZY3-02); plus 2.1-m at-nadir tri-stereo panchromatic image (commonly collected with stereo but not always)
  • Spectral Band Wavelength Range: (in nm)
    • Panchromatic – 500 to 800
    • Blue – 450 to 520
    • Green – 520 to 590
    • Red – 630 to 690
    • NIR – 770 to 890
  • Dynamic Range: 10-bits


Collection Capabilities

  • Footprint Width: 51 km, mono; 52 km, stereo (at nadir)
  • Daily Collection Capacity: 1,000,000 sq km
  • Georeferenced Horizontal Accuracy: 50-m CE90 (global average; depends on terrain and nadir pointing)

Below is the least expensive, color ZiYuan-3 data offered. Prices increase for new collections, stereo and data processing. Note that volume discounts are available.

For an exact quote, please contact our Sales Team at sales@apollomapping.com.

Interested in an accuracy assessment of DEM’s extracted from ZiYuan-3 tri-stereo imagery?

Download Whitepaper