User's Manual
15
Prepare to use you BT Gmouse Receiver
To help you begin to use your BT GPS Receiver (“BT Gmouse”), read this User Guide
in the first step. This User Guide explains the detail how BT Gmouse operates,
functions, and common features of the BT Gmouse. A short glossary of GPS related
terms and abbreviations at the back of the User Guide.
Before you begin using your BT Gmouse, you must complete the application
software installation tasks on your host device like PAD, PDA mobile phone, MMS
mobile phone, handheld PC, and portable PC hardware. For information about the
hardware operation and application software installation, please refer to the
documentation that accompanies each product.
For operation detail information, please consult Chapter 3. In order to get more
familiar with your BT Gmouse, please first read Chapter 2 before starting to operate
BT Gmouse.
GPS signal reception
The Global Positioning System (GPS) is a space-based radio-navigation system.
This system consists of 24 satellites, which orbit the Earth at an altitude of
approximately 17,500 kilometers, and ground control stations. Each of the 24
satellites, deployed in 6 orbital planes, circles the earth twice a day. The system
satellites continuously transmit signals contain the information of time and distance
in a precise formation, 24 hours a day in any weather condition, everywhere around
the world. By processing the signals received, BT Gmouse provides users with
helpful information of position, velocity, and time for navigation and location
awareness purposes anywhere anytime on the Earth.
The BT Gmouse offers high position accuracy and fast Time-To-First-Fix (TTFF),
which rely on environment circumstances where receiver located as well as initial
states of the receiver. During attempting to a position fix, the receiver needs to lock
on to at least 3 satellites and, uses the signal can be received as well as the data of
latest position stored in the receiver’s digital memory in order to compute the
location of the device.