[From nobody Thu Jun  7 16:10:56 2018

Found this on c.o.l.a. 
There are several other interesting Free Software pieces on 
the authors page, like:

| rwgps-0.4 beta
| I have written a serial-port driver/interface application for
| Rockwell's Microtracker LP(tm) GPS Receiver module, 'rwgps'. rwgps
| can read some of the 'Messages' transmitted by Microtracker LP and
| display them in a ncurses screen. It can also send some command
| Messages to the receiver to set parameters or initialize the
| receiver. rwgps is released under the GPL. 

| gridloc-0.2 beta
| gridloc is a ncurses application that converts a position in
| longitude /latitude to a Maidenhead grid locator or vice-versa. It
| can also calculate the bearing and distance to a second 'remote'
| location given its position or grid locator. gridloc is released
| under the GPL. 


Path: uni-berlin.de!fu-berlin.de!news.maxwell.syr.edu!news.alt.net!cola.stump.algebra.com!robomod!not-for-mail
From: Neoklis <neok@spidernet.com.cy>
Newsgroups: comp.os.linux.announce
Subject: wxapt: Weather satellite APT image decoder
Date: Sun, 28 Oct 2001 19:49:53 CST
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Hi,

I have just released a beta version of wxapt-0.3, a weather
satellite APT image decoder application for Linux. 

wxapt is a non-interactive command line tool which currently
understands NOAA and Meteor type APT formats and can decode
images either in real time, direct from the receiver's audio
output and via the computer's sound card, or from a pre-
recorded binary file of APT signal samples.

wxapt has been designed from the beginning to be simple and
economical on processing power requirements. It uses only
integer arithmetic in decoding the image and detecting the
sync pulse train included in APT transmissions and produces
images in the simplest file format - binary (p5-type) 'raw'
PGM. Sound samples are also recorded in a 'straight' binary
file using the unsigned 8-bit format of the sound card's dsp.

Despite these limitations, wxapt can produce good images with
full synchronization so there is no 'wander' of the image's
edges and no significant geometric distortion. No image pro-
cessing is included in wxapt, since there are plenty of tools
available to do this (I only use pgmnorm to enhance contrast).

wxapt is released in source code under the GPL and hopefully
it should be easy to hack if desired. Its well-commented (I
like to believe!).

wxapt is available from my home page at:

http://leonardo.spidernet.net/Copernicus/22420/


-- 
Regards      My Ham Radio callsign: 5B4AZ
             My website (with some Linux software):
Neoklis      http://leonardo.spidernet.net/Copernicus/22420/

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