Orthorectified Landsat Enhanced Thematic Mapper Plus Imagery

Output Product Specifications:

· Spectral Bands: All nine Landsat ETM+ bands - 3 visible, 1 NIR, 2 SWIR, 1 Panchromatic, and 2 thermal IR,

· Coverage: Single Landsat WRS Path/Row,

· Projection/Datum: UTM / WGS84,

· Pixel size: 14.25, 28.5, and 57 meters,

· Interpolation Method: Nearest Neighbor,

· Absolute Positional Accuracy: 50 meters RMS.

Source (Input) Data:

Imagery:

· Spectral Bands: All nine Landsat TM bands,

· Coverage: Single Landsat WRS Path/Row,

· Projection/Datum: SOM / WGS84,

· Pixel Size: Mixture of 28.5 and 30 meters,

· Interpolation Method: Cubic Convolution,

· Orientation: Path oriented,

· Coverage Date: Scene dependent (nominally 2000 +/- 1 years).

Control:

· Horizontal: Controlled scenes contained 6 to 12 photo-identifiable points with absolute positional accuracy not greater then 15.0 meters RMS.

· Vertical: DTM with 3-arc second postings, where available. Where 3-arc second data not available, GTOPO30 (30-arc second ) digital elevation models are used.

Digital Image Processing:

· Photogrammetric Block Adjustment:
Performed using Earth Satellite Corporation’s proprietary photogrammetric software.

· Orthorectification:
Resampled to a UTM/WGS84 projection using nearest neighbor (i.e. no interpolation).

· Image Enhancements:
The data are spatially and spectrally unenhanced.

Earth Satellite Corporation April, 1999