Principles of Operation
P/N 7010-0935
1-7
Also, broadcast navigation data are retrieved from the navigation
frame.
After the receiver locks on to four or more satellites, its absolute
position in WGS-84 and the time offset between the receiver clock
and GPS time are computed. This information and the measurement
data can be stored in the optional Compact Flash card or the USB
mass storage device (UMS) and downloaded later onto a computer,
then processed using a post-processing software package. When the
receiver operates in RTK mode, raw data measurements can also be
recorded into the receiver’s Compact Flash memory or a UMS. This
allows the operator to double check real-time results obtained in the
field.
The Net-G3A offers a unique collection of features and capabilities in
a single design. They include:
• 144 universal tracking channels
• Multipath reduction
• Adjustable phase locked loop (PLL) and delay lock loop (DLL)
parameters
• Anti-jamming suppressor
• 1PPS and event marker
• External oscillator input
• GNSS-disciplined internal crystal oscillator output
• RS232C and USB port connectivity
• USB storage device
• Removable memory
• Backup battery system
• Ethernet connectivity
• Web-based management
• Satellite Based Augmentation Systems (WAAS, EGNOS, etc.)
• Dual- or multi-frequency modes, including static, kinematic, real-
time kinematic (RTK), and differential (DGPS) survey modes.
Net-G3A_OM_Book.book Page 7 Thursday, May 14, 2009 8:49 AM
