| The WR-G420i receiver is shipped with a powerful software application as standard
component, included at no extra cost.
When in Automatic Control mode, the G420i application software provides
all the functionality required to automatically track NOOA and FengYun polar
orbiting weather satellites in real time, record the data streams transmitted
by them, and display a weather image for your location. In Automatic Control mode,
all hardware is fully under control of the software. This includes dish positioning,
IF bandwidth selection, PLL frequency tuning, AFC and decoder bit rate selection.
The software automatically performs rotator and receiver calibration, if it is
required, and allows the user to do so at any other time.
Satellite tracking and data recording is fully automatic and is done by the scheduler,
which predicts the position of each satellite, based on TLE data automatically downloaded
from the internet on a regular (but configurable) basis. Satellite selection for tracking
can be filtered, based on elevation and/or pass duration.
|Satellite overlap during tracking is handled on the basis of longest pass duration, but
can be manually overridden. Synchronization of the software application clock is
configurable and may be taken either from the computer real time clock, or from an
NTP server via the internet using the NTP protocol.
Once displayed, advanced image processing can be performed on the weather image,
using the sophisticated software tools provided by the application. These include
RGB false-colour editing of infrared or non-visible spectral channels, a feature
to remove speckle noise, as well as a contrast enhancement function based on histogram
equalization. Data can be exported in NOAA Level 1B (HRPT) file format, while images
can be saved as BMP, JPG, TIF, GIF and PNG.
When in Manual Control mode, the software provides the user with manual control
over dish positioning via rotator azimuth and elevation control, receiver frequency
tuning, as well as data recording start and stop.
See Software Specifications for detailed
functionality of the WR-G420i application software.