User's Manual Part 1

Introduction
HiPer XT Operator’s Manual
1-2
Overview
Topcon Positioning System’s HiPer XT is a dual-frequency, GPS+
receiver built to be the most advanced and compact receiver for the
surveying market. The HiPer XT is a multi-function, multi-purpose
receiver intended for precision markets. Precision markets means
markets for equipment, subsystems, components and software for
surveying, construction, commercial mapping, civil engineering,
precision agriculture and land-based construction and agriculture
machine control, photogrammetry mapping, hydrographic and any
use reasonably related to the foregoing.
The HiPer XT can receive and process both L1 and L2 signals,
improving the accuracy of your survey points and positions. The dual-
frequency and GPS+ features of HiPer XT combine to provide a real
time kinematic (RTK) system accurate for short and long baselines.
Several other features, including multipath mitigation and co-op
tracking, provide under-canopy and low signal strength reception.
The receiver provides the functionality, accuracy, availability, and
integrity needed for fast and easy data collection.
Principles of Operation
Surveying with the right GPS receiver can provide users accurate and
precise positioning, a requirement for any surveying project.
This section gives an overview of GPS and receiver functions to help
you understand and apply GPS principles, allowing you to get the
most out of your receiver.
GPS Overview
The Global Positioning System (GPS) is a satellite-based, line-of-
sight radio navigation system run by the United States Department of
Defense (DoD). This system offers a global, all weather, 24-hour
positioning, velocity, and time service to any user equipped with a
GPS tracking receiver, who is on or near the Earth’s surface. The
Global Navigation Satellite System (GLONASS), is the Russian
Federation Ministry of Defense counterpart to GPS.