NOAA
(National Oceanic and Atmospheric Administration) satellites are placed in a
near-circular, sun-synchronous, near-polar (99° inclination), abt. 850 Km high
orbit.
Approximately fourteen, 102 minute period orbits are made in each 24 hour day.
Each orbit view is about 2700 Km wide. Advanced High Resolution Radiometer (AVHRR)
provides both the twice daily view of the globe at 4 Km resolution APT and a high
resolution HRPT 1 Km. Receiving HRPT images five channels of polar orbiting data
can be simultaneously acquired over an area of interest.
These
data include visible, near-infrared (reflected), and three thermal
infrared (emitted) channels. |
Keplerian elements are the inputs to a standard mathematical
model of spacecraft orbits (ex: IstanTrack program). With the
"keps", the correct time, and your station location, you
can compute when the satellite will be in view and where to point
your antennas.
Download Noaa satellites Keplerian Elements now !
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Our
NOAA95 software will split the five channel and calculate
(if requested) other 2 image: the VI (Vegetation
Index) and the
NVI (Normalized Vegetation Index).
### Noaa95 software output File Notation
###
HRPTnnn_.RAW = 8 bit file multiplexed (the 8 MSbit as received)
After SPLIT function: nnn (image number) will be the
same
- HRPTnnnA.RAW = 1st Noaa Channel
- HRPTnnnB.RAW = 2nd Noaa Channel
- HRPTnnnC.RAW = 3rd Noaa Channel
- HRPTnnnD.RAW = 4th Noaa Channel
- HRPTnnnE.RAW = 5th Noaa Channel
- HRPTnnnV.RAW = calculated Vegetation Index Channel
- HRPTnnnN.RAW = calculated Normalized Vegetation Index Channel
By pressing CTRL+J a JPG file will be created
and named NOAAnnn.JPG
By pressing CTRL+P after split function (while
the 8 channels are displayed)
a PCX image wiil be created and named
NOAAnnn.PCX
" AVHRR " spectral bands
channel |
wavelength [nm] |
1 |
580 - 680 |
2 |
725 - 1100 |
3 |
3550 - 3930 |
4 |
10300 - 11300 |
5 |
11500 - 12500 |
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