Raven Phoenix 300, Installation And Operation Manual, Page: 11 / 64

Manual No. 016-0171-548 Rev. C 5
Introduction
1
OmniSTAR
®
VBS, XP, or HP
The OmniSTAR system is a full-time differential GPS broadcast system, delivering corrections to the world’s
major land masses from a worldwide array of reference sites. Data from these reference sites flows to Network
Control Centers (NCC’s) where the corrections are decoded, checked, and repackaged in a highly efficient
format for broadcast. The data is then up converted for transmission to communication satellites which
broadcast over geographical areas. Communication links with each reference site include a dial-up line to
serve as backup to leased lines to allow control of the receivers.
The satellite broadcast is received at the machine location, demodulated, and passed to a processor that
reformats the data into corrections for use by the Phoenix 300 receiver. When using an OmniSTAR correction
service, atmospheric corrections are applied to the data from multiple sites which are then combined to provide
an optimal correction for the machine location. These corrections, recast in RTCM SC-104 format, are used by
the Phoenix 300 receiver for maximum accuracy.
Note:
Contact OmniSTAR for details and subscription information.
RTK (Real-Time Kinematic)
RTK systems utilize a fixed, local GPS receiver or ‘base station’ to provide a highly accurate correction signal
to a GPS receiver within the base station coverage area.
The Phoenix 300 is capable of interfacing with a Slingshot
®
Field Hub™ to receive RTK level corrections via a
cellular network.
Note:
Contact a local Raven dealer for more information or to obtain an RTK authorization code for the
Phoenix 300 receiver.