Novatel GPStation-6, Руководство пользователя

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12 GPStation-6 User Manual Rev 2
NovAtel’s GPStation-6 technology combines a rugged enclosure with an ultra-low phase noise OCXO
and advanced OEM628 receiver, providing a modernized GNSS Ionospheric Scintillation and TEC
Monitor (GISTM) receiver. The GPStation-6 provides advanced ionospheric monitoring capabilities,
using a future proof platform, supporting an array of ionospheric monitoring and space weather
applications with the GNSS signals of today and tomorrow.
Figure 2: GPStation-6 Enclosure
With the 120-channel multi-constellation, multi-frequency OEM628 measurement engine at its core,
the GPStation-6 takes advantage of NovAtel’s industry leading signal tracking and positioning
performance to deliver the channel capacity and signal tracking capabilities to support all current and
planned GNSS signals for the foreseeable future. The OEM628 receiver software is updated to
provide advanced GISTM algorithms for Ionospheric Scintillation Monitoring (ISM) and Total
Electron Content (TEC) measurements for all tracked signals. Depending on the GPStation-6 model
purchased, ISM and TEC measurements are output for a combination of the following GNSS
constellations and signal types:
GPS
L1-C/A, L2-P(Y), L2C, L5;
GLONASS
L1, L2;
Galileo
E1, E5a, E5b, AltBOC; SBAS
L1, L5;
COMPASS
;
QZSS
With the ability to upgrade the GPStation-6 firmware in the field, additional signal support can be
purchased as new signals become available.
As a result of this specialized integration of advanced hardware and software, the GPStation-6
provides a unique platform to support local monitoring of ionospheric effects on GNSS. The receiver
outputs raw (or detrended) observation data once every second, which includes 50 Hz phase and
amplitude measurements and 1 Hz TEC measurements. The receiver also outputs extended summary
messages every 60 seconds that include additional information and calculations for each tracked
signal, including SV azimuth/elevation angle, C/N
0
, lock time, code-minus-carrier, calculations of
different amplitude scintillation (S
4
), phase scintillation ( σ
ф
) and TEC statistics.
The wealth of data generated by the GPStation-6 GISTM receiver can be used to enable an array of
applications. For example:
•
Raw high-rate data can be used to develop real-time local ionospheric monitoring applications,
where the primary goal may be to detect and report random ionosphere-induced disturbances in
support of signal integrity.
• Summary data can be used for near real-time applications to generate a local “map” of the
ionosphere, where the primary may be to providing ionospheric corrections (TEC delay,
scintillation) for local GNSS users.
Introduction