Gaofen-1

Gaofen-1 is four satellites (GF-1, GF-1B, GF-1C and GF-1D) collecting 2m panchromatic and 8m multispectral imagery across a 60km swath, suited to regional coverage.

Gaofen-1

Rate card

Price on request

No published rate for this sensor. Send us the area and dates.

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How it arrives

Files
Cloud-Optimised GeoTIFF with STAC metadata
Processing
Orthorectified, pansharpened, colour-balanced, mosaicked
Included
Raw scenes, orthorectified scenes, surface reflectance, pansharpened, mosaic, QA report
Sign-off
An analyst signs off every delivery
Delivery
Most orders within 24 hours, archive often the same day

Samples are by application: apply, a short call, then the sample.

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Technical specifications

Provider CNSA
Resolution
Panchromatic: 2m GSD
Multispectral: 8m GSD
Swath width 60km at nadir
Accuracy 50m CE90 without GCPs
Bands
Panchromatic
Blue
Green
Red
Near-infrared
Stereo available Yes
Coverage 4 days revisit
Altitude 645 km
Dynamic range 11 bits
Orbit type Sun-synchronous, 10:30 am descending node

What you can do with Gaofen-1

Detail at 2m GSD

At 2m GSD, blocks, parcels, infrastructure corridors and crop units read clearly, while individual vehicles do not. The panchromatic band carries that geometry, and the 8m GSD multispectral bands are pansharpened against it, so colour products hold the same detail.

Standard index bands

Blue, green, red and near-infrared cover the everyday products: true colour, colour infrared, and the indices built from red and near-infrared (NDVI) or green and near-infrared (NDWI). Those index rasters carry the 8m GSD multispectral sampling, not the 2m GSD panchromatic figure.

4 satellites collecting

4 satellites fly this specification, so there are more chances of a usable pass inside a tasking window and a deeper archive to search before anything is tasked. As stated by the supplier: 4 days revisit. That is the cadence to plan against; a cloud-free result usually takes more than one opportunity.

Wide strips

The swath is 60km at nadir, so a large area of interest is covered in few strips. Fewer strips means fewer joins to match, and less time spread across one delivery.