56
Magellan MAP 410 GPS Receiver
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 described in both LAT/LON and
UTM coordinates.
Time Delay Grids (TD). These are lines of position (LOPs) that are
determined by the difference in length of time required to receive the Loran-
C signals. Loran is a radio navigation aid and TD coordinates are clearly
marked on nautical charts. Our marine GPS units can display position
coordinates in TDs by converting from position fixes calculated in LAT/
LON. (No measurements are being made using Loran signals).
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
34 06’35”N
LAT/LON
DEG/MIN.MM
DEG/MIN/SEC
34 06.58N
117 49.56W
117 49’34”W
UTM
11 4 23 818 E
37 74 624 N
Summary of Contents for MAP 410
Page 1: ...MAP 410 MAP 410 User Manual...
Page 87: ......
Page 88: ...960 Overland Court San Dimas CA 91773 909 394 5000 630319 A...
