Overview
Gaofen-6 (GF-6) is a key component of China's CHEOS program, launched on June 2, 2018, aboard a Long March 2D rocket. Designed for agricultural and environmental applications, it complements GF-1 with enhanced spectral capabilities, including a red-edge band for vegetation analysis. The satellite operates in a sun-synchronous orbit at an altitude of 645 km, providing global coverage with a revisit cycle of 8 days. GF-6 carries two primary payloads: a 2-meter panchromatic/8-meter multispectral camera (similar to GF-1) and a novel 16-meter wide-field-of-view (WFV) camera with eight spectral bands. This configuration supports large-scale crop classification, soil moisture estimation, and disaster assessment, aligning with China's national food security and ecological monitoring goals.
Key Features
The satellite's standout feature is its 16-meter WFV camera, which covers a 800-km swath width—significantly wider than most commercial satellites. It includes two dedicated agricultural bands (red-edge and purple) to monitor crop health and chlorophyll content. The 8-band configuration also supports water body identification and atmospheric correction. GF-6's data is interoperable with other Gaofen satellites, enabling time-series analysis. Its ground sample distance (GSD) ranges from 2 meters (panchromatic) to 16 meters (multispectral), with radiometric resolution of 10 bits. The satellite's design emphasizes high signal-to-noise ratios for accurate quantitative remote sensing, critical for precision agriculture applications.
Application Areas
GF-6 primarily serves agricultural sectors, enabling crop yield prediction, pest detection, and irrigation management. Its red-edge band (710–750 nm) is particularly valuable for distinguishing crop types and growth stages. Forestry applications include deforestation tracking and biomass estimation, while environmental uses cover water quality monitoring and algal bloom detection. The satellite also supports disaster response, such as flood mapping and wildfire assessment. Government agencies and research institutions leverage GF-6 data for policy-making, while commercial entities use it for supply chain monitoring (e.g., commodity forecasting). International users can access data through China's Land Observation Satellite Data Service Platform, subject to export controls.
Precautions
Users should note that GF-6's data distribution follows China's Remote Sensing Data Management Regulations, requiring registration for sensitive areas. Atmospheric conditions (e.g., cloud cover) may affect data availability, and processing raw imagery demands specialized software like ENVI or PCI Geomatica with GF-specific toolkits. For B2B users, data licensing terms vary by region—some applications may require government approval. Resolution limitations (16 m for multispectral) make GF-6 less suitable for small-scale precision farming compared to drones or sub-meter satellites. Always verify spectral band alignment with project requirements before procurement.
B2B Procurement Guide
GF-6 data is available through authorized resellers like China Siwei Surveying and Mapping Technology Co. or the China Centre for Resources Satellite Data and Application (CRESDA). Pricing follows a tiered model: raw data is cheaper but requires processing, while analysis-ready products (e.g., NDVI maps) command premiums. Volume discounts apply for multi-scene purchases. Procurement should consider: 1) Required bands (e.g., red-edge for agriculture), 2) Delivery timelines (typically 1–4 weeks after tasking), and 3) Integration capabilities with existing farm management systems. For international buyers, factor in additional compliance costs for data export. Sample datasets are often available for feasibility testing prior to large-scale purchases.
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