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GF-4 Satellite Imagery

Launched in December 2015, the GF-4 satellite is a pioneer in remote sensing as China's first geosynchronous orbit satellite. Operating at an altitude of 36,000 km, it provides real-time regional monitoring, allowing for continuous observation of specific areas for extended periods. Its unique capabilities make it a critical asset for time-sensitive applications like disaster management and persistent surveillance.

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Artistic representation of the GF-4 geosynchronous satellite in orbit.

Resolution

50m VNIR

Revisits

20 Seconds

Swath Width

400 km

Orbit

Geosynchronous

Bands

VNIR & MWIR

Mission Life

8 Years

Technical Specifications

Launch DateDecember 29, 2015
Orbit TypeGeosynchronous
Altitude36,000 km
Mission Lifetime8 years
Swath Width400 km
Revisit Capacity20 seconds
VNIR Resolution50m
MWIR Resolution400m
VNIR Spectral Bands 0.45-0.90μm (Pan)
0.45-0.52μm (Blue)
0.52-0.60μm (Green)
0.63-0.69μm (Red)
0.76-0.90μm (NIR)
MWIR Spectral Band3.5-4.1μm

Features and Benefits

  • Continuous Monitoring: Its geosynchronous orbit allows for constant, real-time observation of a specific area, invaluable for tracking dynamic events as they unfold.
  • Rapid Data Updates: With a 20-second revisit time, GF-4 delivers near-instantaneous updates, which is critical for emergency response and time-sensitive monitoring.
  • Dual Optical & Infrared: The ability to acquire both VNIR and Mid-Wave Infrared (MWIR) imagery provides a comprehensive view, enabling thermal analysis in addition to visible observations.
  • Wide-Area Coverage: A vast 400km swath width enables broad regional monitoring, making it efficient for observing large-scale phenomena.

Applications

Disaster Management: Ideal for real-time flood risk mapping, forest fire detection and tracking, and overall disaster assessment and response.
Environmental Monitoring: Track large-scale events like dust storms, volcanic ash clouds, and major pollution events with its wide swath and continuous coverage.
Military & Intelligence: Conduct persistent surveillance over strategic areas of interest, monitor borders, and track assets for national security operations.
Marine Security: Continuously monitor large marine areas, coastal zones, and key shipping lanes to track vessel movements and identify anomalies.
Oil & Gas Monitoring: Use MWIR capabilities to identify heat signatures from gas flares, pipeline leaks, or overheating equipment over large operational areas.
Urban & Traffic Management: Monitor traffic flow, urban heat islands, and large-scale changes in metropolitan areas in near real-time.

Why Choose XRTech Group for GF-4 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-4 Sample Imagery

Sample imagery from GF-4 showing continuous monitoring of a forest fire.
Example of GF-4 data showing wide-area weather patterns.

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
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Area (km²)—
AOI method—
Coordinates / Location—
Imagery type—
Date range—
Resolution—

Indicative Estimate

Based on XRTech published pricing. Final price confirmed after feasibility check.
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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
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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.