Imagenes quikbird

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QuickBird
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QuickBird from DigitalGlobe™ is the highest-resolution multispectral commercial remote sensing satellite now operating, offering imagery from 60 cm resolution. Launched October 18, 2001, QuickBird collects multi-spectral and panchromatic imagery concurrently, and Pansharpened products innatural or infrared colours are offered. Strips up to 250km long can be collected in a single pass. QuickBird provides the widest swath, largest on-board storage, and highest resolution of any current commercial satellite. QuickBird is designed to efficiently and accurately image large areas with industry-leading geolocational accuracy.

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QuickBird Technical Summary

TM

Launch Orbit Nominalswath width On-board storage Dynamic Range Resolution

October 18, 2001, Vandenberg Air Force Base, California 450 km altitude; 93.5 minute orbit time; 10:30 am equator crossing time (descending); inclination 97.2° sun-synchronous 16.5 Km at nadir 128 Gbit (approximately 57 scenes) 11 bits per pixel

Panchromatic
Basic: 0.61 metres at nadir, 0.72 metres at 25° off-nadir nadir Standard &Orthorectified: resampled to 0.6 /0.7 metre GSD

Multi-spectral
Basic: 2.44 metres at nadir, 2.88 metres 25° off-nadir Standard & Orthorectified: resampled to 2.4/ 2.8 metre GSD Blue: 450—520 nanometers Green: 520—600 nanometers Red: 630—690 nanometers Near-IR: 760—900 nanometers

Spectral Bandwidth

450—900 nanometers

Coverage QuickBird’s on-board tape recorder gives world-wide coverage.Eurimage is the Master Distributor for worldwide QuickBird products for customers in Europe and the Mediterranean basin (excluding non-international organisations in Italy), appointed by Telespazio (Finmeccanica Group), Master Distributor and shareholder of DigitalGlobe. Product Levels DigitalGlobe panchromatic, multi-spectral and pansharpened colour products enable superior image classification andanalysis based on discrete spectral bands and 11-bit information depth. Typically, customers utilize 4-band imagery for image classification and analysis, while panchromatic and pan-sharpened imagery is used for visual analysis and for GIS and Mapping applications that support the standard GeoTIFF format. Imagery products are offered at three levels: • Basic Imagery • Standard Imagery •Orthorectified Imagery Panchromatic imagery is collected in 11-bit format (2048 gray levels) and delivered in 16 bit format for superior image interpretation (shadow detail, etc.), or 8-bit format (256 gray levels) supported by GIS and mapping applications. Four-band multi-spectral imagery consists of blue, green, red and near-infrared bands, delivered in 16-bit and 8-bit formats. In addition, pan andpan-sharpened imagery is available at 60 or 70-centimetre resolution. Basic Imagery Products Basic Imagery products are the least processed of the QuickBird Imagery products and are designed for customers having advanced image processing capabilities. Basic Imagery, together with the supplied attitude, ephemeris, and camera model information, is suitable for advanced photogrammetric processing(i.e., orthorectification).
Processing

account for the mis-registration of the panchromatic and multi-spectral bands. Each scene in a Basic Imagery order is processed individually, therefore multi-scene Basic Imagery products are not spatially nor spectrally mosaiced.
Accuracy

The Basic Imagery product is essentially “geometrically raw”. However, when the data are processed with the suppliedrefined Image Support Data (ISD), a horizontal geolocational accuracy of up to 23-meter (CE90%), excluding any topographic displacement may be achieved. Basic Imagery products may be processed by a supported commercial software applications package, which utilize the ISD associated with the image.
Physical Structure

Basic Imagery products are delivered as one or more full or fractional scenes....
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