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GF-3 SAR Satellite Imagery

The GF-3 constellation is a cornerstone of modern remote sensing, providing high-resolution C-band Synthetic Aperture Radar (SAR) imagery. Its ability to see through clouds, smoke, and darkness makes it an indispensable tool for reliable, all-weather, day-and-night Earth observation, from maritime surveillance to critical infrastructure monitoring.

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Artistic representation of the GF-3 SAR satellite in orbit.

Resolution

1m - 500m

Revisits

< 1 Day

Swath Width

10 - 650 km

Sensor

C-Band SAR

Imaging Modes

12

Mission Life

8 Years

Technical Specifications

Launch DatesGF-3 01 (Aug 2016), GF-3 02 (Nov 2021)
Altitude755 km
Orbit TypeSun-Synchronous
Mission Lifetime8 years
Sensor BandC-Band SAR
Revisit (Constellation)Less than 1 day
Imaging Modes
  • Spotlight: 1m res, 10km swath, Single Pol
  • Ultra Fine Stripmap: 3m res, 30km swath, Single Pol
  • Fine Stripmap 1 & 2: 5-10m res, 50-100km swath, Dual Pol
  • Standard Stripmap: 25m res, 130km swath, Dual Pol
  • Quad-Pol (Fine & Std): 8-25m res, 30-40km swath, Full Pol
  • ScanSAR (Narrow, Wide, Global): 50-500m res, 300-650km swath
  • Wave: 10m res, 5km swath, Full Pol

Features and Benefits

  • All-Weather Reliability: GF-3 SAR penetrates clouds, fog, and smoke, providing crucial data in conditions where optical sensors fail.
  • Versatile Imaging Modes: With 12 modes and multiple polarizations, GF-3 can be tailored for any application, from high-resolution site monitoring to wide-area maritime surveillance.
  • Millimeter-Scale Change Detection: Ideal for Interferometric SAR (InSAR) applications, allowing for the detection of minute surface movements to monitor infrastructure health and geological hazards.
  • High Resolution & Wide Coverage: Offers the flexibility to zoom in with 1m resolution for detailed analysis or zoom out with a 650km swath for regional oversight.

Applications

Maritime Domain Awareness: Monitor ports, track vessels (including "dark" ships), detect illegal fishing, and respond to oil spills with reliable, all-weather surveillance.
Disaster Management: Provide critical support for monitoring floods, landslides, and volcanic activity, especially when optical imagery is obscured by clouds or smoke.
Infrastructure Monitoring: Use InSAR to detect deformation and subsidence of critical assets like dams, bridges, pipelines, and buildings, identifying risks before they escalate.
Defense & Intelligence: Deliver reliable, all-weather intelligence for reconnaissance, target detection, and monitoring of sensitive sites and borders.
Environmental & Oil Spill Monitoring: Automatically identify oil spill areas, predict their movement, and monitor deforestation and land use changes in persistently cloudy regions.
Mining & Resource Management: Support 3D geological mapping and enhance exploration and operational efficiency by monitoring ground stability and infrastructure.

Why Choose XRTech Group for GF-3 SAR Imagery?

We provide more than just satellite data; we deliver comprehensive solutions tailored to your project's specific needs, ensuring you get actionable insights quickly and efficiently.

Expert Consultation

Our geospatial experts provide a free consultation to understand your needs and recommend the best acquisition parameters to ensure optimal results for your project.

Rapid Delivery

Leveraging our direct partnership and access to a vast 130+ satellite constellation, we offer fast turnaround times, delivering imagery in days, not weeks.

Seamless Integration

We deliver data in industry-standard formats (like GeoTIFF) compatible with your GIS, CAD, or modeling software, with a team ready to support your workflow.

GF-3 SAR Sample Imagery

Sample GF-3 SAR imagery showing detailed monitoring of a busy port.
Example of GF-3 SAR data used for mapping the extent of a flood.

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