met_decoder is a translation to C of Artem Litvinovich's Pascal
program "meteor_decoder". met_decoder works in almost the same way
as meteor_decoder and produces the same images, decoded from a file
of raw or soft recordings of symbols, as transmitted by the LRPT
channel of the Russian Meteor M2 weather satellite. met_decoder has
some additional code of my own that can perform histogram
normalization (contrast stretching) of the images and further
pseudo-coloration of the compound image. Both these functions can
be controlled by some additional command line options. Please read
the README file in the source directory for more details.
wxapt is a console application for decoding and saving weather
images transmitted in the APT format of NOAA and METEOR satellites.
It seems that at the present time (fall 2005) there are still no
satellites transmitting in the latter format in the 137 MHz band,
that I know of at least. But there are a few NOAA satellites that
operate continuously in this mode and frequency band: NOAA-12 and
NOAA-15 are the "veterans" of the field and NOAA-17 and NOAA-18 are
the current morning and afternoon pass birds.
Read more details on-line or
download wxapt's manual
package of wxapt
xwxapt is a GTK+ graphical version of wxapt. It uses the same
decoding engine as wxapt but it displays APT images at half-size as
they are received, storing the full-sized files when reception is
completed. It also displays some status information (audio level,
sync level, sync status etc) and text messages as it runs.
details on-line or download xwxapt's
(last!) source package of xwxapt
with a GTK+-2
package of xwxapt
with a GTK+-3 GUI.
This is xwxapt decoding APT images
with a NooElec RTL-SDR dongle from NOAA-19
Xwxapt receiving NOAA-19 Ch. A+B
Images flipped and pseudo-colorized
These are APT images decoded by
received with a NooElec RTL-SDR dongle from NOAA-19
NOAA-19 Channel A
NOAA-19 Channel B