￿Relative position

The relative position function allows you to compare two GPS locations. By doing so you can determine the distance between the two locations, the direction from one to another (relative to true North), the difference in alti- tude and the difference in timestamps.

Note:

The GPS system by its nature often reports large errors in the altitude parameter, if you experience a large unexpected offset in ele- vation this is not a defect in your GPS receiv- er.

￿Relative position menu

The relative position menu is available when you have a Current Position, when you are

receiving locations in the Continuous Posi- tion and when you receive a special GPS SMS. In all of these cases, a relative position can be calculated against a stored waypoint. You may also calculate the relative position between any two stored waypoints.

￿Invert

When in the relative position display, the in- vert function can be selected to swap the compared points. This changes the direction by 180° and inverts the sign on the elevation and timestamp differences. When the invert function is on, the first line of the informa- tion display starts with *.

Phone/Call settings

Network

& Alert

￿Receiving a GPS way point

When your mobile phone receives a GPS waypoint via SMS the display will prompt you to save it in waypoint memory, compute rel- ative position, send out as SMS message or reject it. Received GPS waypoints are not stored with your SMS messages; they are saved in waypoint memory. If all 10 GPS waypoint locations are full then saving a GPS waypoint will overwrite the existing GPS waypoint in the selected location.

Note:

Only specially coded GPS waypoints are rec- ognized by your mobile phone software.

Example of saving a GPS waypoint being re- ceived:

$ "

GPS WPT Rcvd

from

Steve

 

Read

Reject

 

Press

Read

 

 

 

The GPS information will be dis-

 

played

 

 

Press

Options

 

 

Select

Save

 

 

Choose a waypoint location entry

Press

Save

 

 

You will be prompted to enter a waypoint name

Press Save

Sound

facilities Statistics/Info

￿Select format (8-5)

This feature allows you to change the format in which the position information is dis- played.

Select Menu > GPS Manager > Select Format

The current setting is displayed.

Press Change

Scroll to the desired display format Press Select

GPS

WAP Internet

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Hughes 7101 user manual Relative position, Receiving a GPS way point, GPS WPT Rcvd From Steve Read, Select format