Magellan eXplorist XL User Manual
Page 78
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UTM coordinates are easy to use, but since the model it is based on is
somewhat abstract, this section is a very simplified introduction to UTM.
Instead of projecting an imaginary grid of intersecting lines onto the globe,
UTM projects sections of the globe onto a flat surface. Each of these
sections is called a “zone.” There are 60 zones to cover the entire earth
between 84˚N and 80˚S (polar areas are not described by UTM). Each
zone is 6˚ wide as projected from the earth’s center.
A UTM position is described by three elements; the zone it is in, the easting,
and the northing. Eastings and northings measure how far into a zone a
position is in meters. Eastings are an east/west measurement, and
correspond roughly to longitude. Northings are a north/south
measurement, and correspond to latitude.
This chart shows the position of Magellan Systems described in both Lat/
Lon and UTM coordinates.
LAT/LON
UTM
DEG/MIN
DEG/MIN/SEC
34˚06.58N
34˚06’35"N
11 4 23 818 E
117˚49.56W
117˚49’34"W
37 74 624 N
15
11 12 13 14
3000 Km
3000 Mi.
Scale at the Equator.
1
2
3
4
5
180
°
150
°
10
120
°
90
°
20
60
°
25
30
°
30
0
°
35
30
°
40
60
°
45
90
°
50
120
°
55
150
°
60
180
°
0
°
NOTE: The area described by the UTM coordinate system extends to 84
°
N and to 80
°
S.
6
7
8
9
16 17 18 19
21 22 23 24
26 27 28 29
31 32 33 34
36 37 38 39
41 42 43 44
46 47 48 49
51 52 53 54
56 57 58 59