| [Edit]
The LOC record (RFC1876) is a means for expressing location information in the Domain Name System.It contains WGS84 Latitude, Longitude and Altitude information together with host/subnet physical size and location accuracy. This information can be queried by other computers connected to the internet.
top
Record format
The LOC record is expressed in a master file in the following format:
LOC d1 m1 s1 d2 m2 s2
alt"m" siz"m" hp"m" vp"m"
(The parentheses are used for multi-line data as specified in RFC 1035 section 5.1.)
where: d1: 0 .. 90 (degrees latitude)
d2: 0 .. 180 (degrees longitude)
m1, m2: 0 .. 59 (minutes latitude/longitude)
s1, s2: 0 .. 59.999 (seconds latitude/longitude)
alt: -100000.00 .. 42849672.95 BY .01 (altitude in meters)
siz, hp, vp: 0 .. 90000000.00 (size/precision in meters)
top
An example DNS LOC resource record
yahoo.com in wiki coordinates:
yahoo.com. IN LOC 37 23 30.900 N 121 59 19.000 W 7.00m 100.00m 100.00m 2.00m
top
Altitude for Geosynchronous Earth Satellites
The altitude range provides the following:
Maximum altitude is 42,849.67295 km. Which is large enough to store the altitude of a circular geosynchronous orbit (i.e. approximately 35,790 km above mean sea level).
Maximum depth of 100 km below earth surface.
top
See also
|
|
