Artemis BP00707, Руководство пользователя

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 The second field contains the whole number of minutes, indicated by the single
quote symbol ( ' ).
 The third field contains the number of seconds with an optional decimal
fractional component, and is indicated by the double quote symbol ( " ).
As with the DM notation above, each minute represents one sixtieth of a degree, but
additionally each second represents on sixtieth of a minute (or
1
/
3600
of a degree).
Values can be converted from decimal degrees by first multiplying the fractional part of
the degrees value by 60 to obtain the minutes, then multiplying the fractional part of
the minutes again by 60 to obtain the seconds, For example…
32.76125°  32° 45.675’  32° 45’ 40.5” (as 0.675

60 = 40.5)
This notation is sometimes called Degrees, Minutes and Decimal Seconds, or DMS for
short.
5.7.2 Signed versus Unsigned
As discussed above, Latitudes and Longitudes both fundamentally express an angular
value in degrees, so a ‘sign’ value is used to indicate which hemisphere the coordinate
lies in.
Convention defines these to be…
 For Latitudes…
o
Positive values lie in the Northern hemisphere (from 0° to +90°)
o
Negative values lie in the Southern hemisphere (from 0° to -90°)
 For Longitudes…
o
Positive values lies in the Eastern hemisphere (from 0° to +180°)
o
Negative values lies in the Western hemisphere (from 0° to -180°)
The hemispheres are often abbreviated to the four characters “N”, “S”, “E” and “W” and
these are written at the end of the coordinate value.
So, for example (ignoring the latitude or longitude context)…
 32.76125° would be interpreted as either 32.76125° N or 32.76125° E
 -32.76125° would be interpreted as either 32.76125° S or 32.76125° W
However, this means we can choose to either…
 Express all values with a positive or negative ‘sign’ and use a North or East
reference ONLY.
Artemis Manager refers to this system as SIGNED COORDINATES
i.e. 32.76125° N and (minus) - 32.76125° N
 Express all values without any sign, and use the appropriate North/South or
East/West notation
Artemis Manager refers to this system as UNSIGNED COORDINATES
i.e. 32.76125° N and 32.76125° S