WorldView 4

WorldView-4 operated from November 2016 until a control moment gyroscope failure in January 2019. Its 31cm archive, covering 2016 to 2019, remains orderable.

WorldView 4

Technical specifications

Provider Vantor (formerly Maxar)
Resolution
Panchromatic: 31cm GSD
Multispectral: 1.2m GSD
Swath width 16km at nadir
Accuracy 60cm with suitable ground control
Bands
panchromatic: 450-800 nm
blue: 450-510 nm
green: 510-580 nm
red: 655-690 nm
nearIR: 780-920 nm
Stereo available Yes
Coverage 680,000 km² per day
Altitude 617 km
Dynamic Range 11 bits
Orbit Type Sun-synchronous

What you can do with WorldView 4

Detail at 31cm GSD

At 31cm GSD, vehicles, road markings and individual roof structures stay separable. The panchromatic band carries that geometry, and the 1.2m 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 1.2m GSD multispectral sampling, not the 31cm GSD panchromatic figure.

Archive only

New collection is not possible with this sensor. What stays orderable is its archive, at 31cm GSD panchromatic and 1.2m GSD multispectral, which is how a site is seen as it looked while the satellite was flying.

Stereo for elevation

Stereo pairs are collectable, so elevation comes out of the imagery itself instead of a global model: building heights, stockpile and pit surfaces, the shape of structures on the site you ordered.