source: trunk/dports/comms/dgpsip/Portfile @ 1488

Last change on this file since 1488 was 1488, checked in by fkr, 17 years ago

added long_description. jkh@ ok.

  • Property svn:eol-style set to native
File size: 1.7 KB
1PortSystem 1.0
2name            dgpsip
3version         1.32
4categories      comms
6description     Differential GPS over IP communication device
7long_description        On a stationary GPS without a differential correction \
8                        signal, you should see a 20 m average radius "drunken walk" \
9                        pattern. On the same receiver with DGPS corrections and a \
10                        good view of the sky, the error the same receiver with DGPS \
11                        corrections and a good view of the sky, the error should be \
12                        reduced to approximately 2 m average radius. If you've always \
13                        wanted to know exactly where your house is located without that \
14                        annoying GPS "wander," but didn't want to spend the money for \
15                        a DGPS radio, here is your big chance! I'd like to announce a \
16                        fun DGPS hack. I've written a small Un*x server and client for \
17                        redistributing DGPS correction signals over the Net. Basically \
18                        the server grabs the serial byte stream from my DGPS radio and \
19                        sends it off over a TCP connection. The client does the same thing \
20                        but in reverse.  The result is that you can receive the local DGPS \
21                        corrections from absolutely anywhere by using the Internet as the \
22                        world's largest extension cord.  You'll still need to be within 1000 \
23                        miles or so of San Francisco, California, USA for best results. However \
24                        chances are better error will still be reduced if you are 2000 to 3000 \
25                        miles away. Several respondents from 2000 miles away have noted that the \
26                        remote differential signals have diminished the SA-induced position and \
27                        velocity errors by approximately 3 times.
28platforms       darwin freebsd
30checksums       md5 af948d8c485ac84a343c9210f2f05267
32contents        bin/dgpsip \
33                man/man1/dgpsip.1
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