A basic understanding of the Global Positioning System and its jargon is also assumed. The data, navigation message and ephemeris files used in the tutorials are available via anonymous FTP from the software distribution site. Once there, simply click on each of the files listed. Your web browser should pop open a window allowing you to download each file. The responses from the FTP site may vary with site but should be similar to and understandable from the example.
Some descriptive notes follow the example.
If the site address fails, you may need to use the site's IP address.