Used an AWK script to reformat the GPRMC navigation to a comma-delimited ANSI text navigation file suitable for loading in the GIS. (* refers to the line name, which for this day are L1F1, L2F1, L3f1, L4F1, L5F1 and L6F1). The text editor VI was used to add the necessary header line to each file.
awk_justgprmc:
BEGIN {
FS=","
}
{
FS= ","
ARGC = 2
if ($1=="$GPRMC") {
gpstime = $2
hr = substr($2,1,2)
min = substr($2,3,2)
sec = substr($2,5,2)
latdeg = substr($4,1,2)
latmin = substr($4,3,6)
londeg = substr($6,2,2)
lonmin = substr($6,4,6)
declat = latdeg + (latmin/60)
declon = (londeg + (lonmin/60)) * -1
date = $10
day = substr($10,1,2)
month = substr($10,3,2)
year = substr($10,5,2)
printf("%8.6f, %8.6f, %s:%s:%s, %s\n",declon, declat, hr, min, sec, date)
}
}