« High Resolution Rapideye™ imagery
Basic Product (level 1B)
RapidEye Basic Product (Level 1B) data has been minimally processed and is ready for users who wish to do their own image processing
RapidEye Basic Product data is radiometrically corrected, sensor corrected and band aligned providing imagery as seen from the spacecraft without any further corrections for any terrain distortions.
The imagery data is accompanied by all the necessary metadata that, when combined with user supplied DEMs and GCPs, allow for custom processing the data into a geo-corrected form to suit the user's needs. The imagery is delivered as a group of single band NITF files with a resolution of 6.5 meters GSD at nadir.
The radiometric corrections applied to the RapidEye Level 1B product are:
- Correction of relative differences in the radiometric response between detectors
- Non-responsive detector filling, which fills nulls values from detectors that are no longer responding
- Conversion to absolute radiometric values based on calibration coefficients
The geometric sensor corrections applied to the RapidEye 1B product correct for:
- Internal detector geometry, which combines the two sensor chipsets into a virtual array
- Optical distortions caused by sensor optics
- Registration of all bands together to ensure all bands line up with each other correctly
Attributes of the RapidEye Basic Product.
|The RapidEye Basic Product consists of the following file components:
|Pixel spacing||6.5 m at nadir. Native camera pixel spacing.|
|Bit Depth||16-bit unsigned integers|
|Spectral Bands||Blue: 440-510 nm
Green: 520-590 nm
Red: 630-685 nm
Red Edge: 690-730 nm
NIR: 760-850 nm
|Product Size||Approximately 77 km wide with a variable length of between 50 km and 300 km
462 Mbytes/25 km along track for 5 bands. Maximum 5544 Mbytes.
|Geometric Corrections||Idealized sensor, orbit and attitude models. Bands are co-registered.|
|Resampling Kernel||Cubic Convolution (default), MTF, or Nearest Neighbor|
|Product Framing||Geographic based framing – a geographic region is defined by two corners with the image oriented to the direction of flight of the satellite which is off from north by approximately 8 degrees.|