The first SPOT 4 image was taken at 9 h 38 min 26 sec (UTC) on 27 March 1998.

The scene comes from imagery acquired during orbit 113 by the HRVIR instrument no.2 with an oblique viewing incidence of 18.9°.

It is geographically centred over the Baja (Hungary) site, south of Budapest on the Danube river.

Its centre coordinates are 46°04’50’’ latitude North and 18°40’00’’ longitude East.

The digital product combines the 10 m resolution red spectral band (B2/M) with the 20 m resolution green (B1/XS1), near infrared (B3/XS3) and short-wave infrared (B4/SWIR) spectral bands.

The result is an M+XI product with a resolution of 10 m containing four images corresponding respectively to the green, red, near infrared and shortwave infrared spectral bands.

The cartographic representation corresponds to a projection onto a plane tangent to the centre of the landscape image acquired by the satellite, with the top of the image pointing towards the north.

The two representations of the same product correspond to the assignment of basic colours (red, green, blue) to the spectral bands of the digital image.

IMAGE 1 (on the left)

IMAGE 2 (on the right)

Conventional XS representation

Shortwave infrared representation (XI)

Spectral bands

Basic colours

Spectral bands

Basic colours

green (XS1)

blue

red (M)

blue

red (M)

green

Shortwave infrared (SWIR)

green

near infrared (XS3)

red

near infrared (XS3)

red

Here are two previews of the image:

Full resolution extracts of these image with thematic comments are available on Spot Image server.

qls4prxs.jpg (67335 octets) qls4prxi.jpg (70154 octets)
Subsampled complete image in XS mode Subsampled complete image in XI mode

 

qls4sexs.jpg (57406 octets) qls4sexi.jpg (60479 octets)
Subsampled extract in XS mode Subsampled extract in XI mode

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image2.jpg (6379 octets)

page updated on 00-06-06