Initialisation For Real-Time Rover Operations; Terminology - Leica GPS1200 Series Technical Reference Manual

44.6
44.6.1
Description
Initialisation
Survey - General

Initialisation for Real-Time Rover Operations

Terminology

This chapter describes technical terms related to initialisation.
For cm positioning with GPS, the ambiguities need to be fixed. The process of fixing ambi-
guities is called initialisation. In order to carry out an initialisation, the active configuration set
must be a real-time rover configuration allowing for phase fixed solutions. A minimum of five
satellites on L1 and L2 is required.
The three existing types of initialisation methods are:
• Moving •
Description of initialisation methods
Initialisation Characteristic
method
Moving Principle
Antenna setup
Static • On a known point
Description
The rover receiver is moved from the beginning of
the GPS operation on, recording data. The trajectory
of the moving rover is recorded. Ambiguities are
fixed while moving. A new initialisation starts auto-
matically when, after losing the minimum number of
required satellites, enough satellites are tracked
again.
On a pole.
GPS1200 1181