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.

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.

Request Product Details

Satellite Imagery Advisor

Brief questions. Practical guidance. Get an indicative estimate instantly, and we only proceed to a formal quote once the basics are clear.

Advisor mode: this form will recommend the lowest resolution and type that fits your objective so you do not overpay.
Step 1 — Area & Location
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Start simple: Upload a KML/KMZ/ZIP if you have it. If not, a bounding box or center plus dimensions works fine. We will calculate area for you where possible.
Upload AOI file (KML / KMZ / ZIP) — recommended
Preferred: a single polygon AOI. We compute the area automatically.
Enter corner coordinates (bounding box)
Use min/max latitude and longitude.
Enter center coordinate + width & height
Good for quick feasibility when exact boundaries are not available.
Describe location (city / region / site name)
We will follow up to confirm an AOI boundary if needed.
Advisor note: If speed is the priority, we usually check archive first. If you need a specific date window or fresh capture, choose new tasking.
Archive imagery
Previously captured imagery, typically faster delivery.
New capture (tasking)
Satellite is tasked for your AOI; weather and availability can affect capture date.
Not sure, advise me
We will recommend the most feasible option based on area, timing, and objective.
Minimum order guidance
Archive imagery: typically 15 to 25 km²
New capture: typically 50 to 100 km²
Feasibility depends on satellite, location, and timing.
Pick a date window. We will advise what is realistic for your area and cloud conditions.
Resolution guidance: Higher resolution increases detail and cost. We will recommend the lowest resolution that meets your objective.
I know what I need
Select 30cm, 50cm, 75cm, or 1m.
Advise me based on my objective
Answer a quick question about what you need to see.
Almost done. You will see an indicative estimate. If you agree, we will run feasibility and send a formal quote.
I understand this is an indicative estimate and request feasibility and a formal quote.
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Live Summary
Updates as you answer
Area (km²)
AOI method
Coordinates / Location
Imagery type
Date range
Resolution

Indicative Estimate

Based on XRTech published pricing. Final price confirmed after feasibility check.
Complete Steps 1 to 3 to see an estimate.
Once you submit, XRTech will:
  • Archive: run a coverage check in your date range
  • Tasking: confirm window and issue order form or invoice

Quote Request Sent

Your satellite imagery request has been sent to admin@xrtechgroup.com. XRTech will review feasibility and send a formal quote within 24 hours. A free sample tile for your AOI is included in the quote response.