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 Date	December 29, 2015
Orbit Type	Geosynchronous
Altitude	36,000 km
Mission Lifetime	8 years
Swath Width	400 km
Revisit Capacity	20 seconds
VNIR Resolution	50m
MWIR Resolution	400m
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 Band	3.5-4.1μm

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.

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