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Services
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Services & Subscriptions
SeaSTAR HP:
Decimeter level phase based service based on GPS L1 and L2 frequencies.
SeaSTAR HP is a high accuracy service introduced in 2001. The service uses GPS phase measurement
to get an accuracy of 10 cm (95% Horizontal) and 15 cm (95% Vertical). It also produces very
accurate speed (cm/s). This service is available in the Gulf of mexico, North West Europe and
the Persian Gulf.
More information
SeaSTAR XP:
Decimeter level phase based service, using orbit/clock data valid world wide, based on GPS L1 and L2 frequencies.
This concept utilizes reference stations with a worldwide spread to calculate the orbit and the clock value of each GPS
satellite more accurately than the broadcast GPS ephemeris. Orbit and clock corrections to the broadcast ephemeris are
then transmitted to user. These corrections are valid worldwide and the distance from the nearest reference stations to
the user does not affect performance.
SeaSTAR Plus:
Meter level code based service based on GPS L1 and L2 frequencies.
This is the dual frequency DGPS service introduced in 1999 to remove the effects of ionispheric
disturbances. These disturbances are most pronounced around the maximum of 11 year solar cycle
(peaked 2001), and in equatorial regions.
SeaSTAR DGNSS:
Meter level code based service based on GPS and GLONASS L1 frequency.
This is similar to DGPS, but using the Russian GLONASS satellites. The GLONASS Satellite navigation
system was operational with 24 satellites in the mid 90's, but today has less than 10 satellites
operational. This means that Differential GLONASS has to be used together with DGPS to increase the
number of available satellites in the navigation solution.
More information
SeaSTAR VBS (Virtual Base Station Service):
Meter level code based service based on GPS L1 frequency.
VBS provides users with accurate positioning with a correction message further enhanced for their location.
This multiple reference station solution can provide accuracy to within one metre.
VBS provides consistent accuracy over wide areas.
VBS is highly reliable (not dependent on any single reference station).
There are no position jumps due to switching from one reference station to another.
More information
Fugro Seastar AS provides several levels of service that are available by subscription.
Contact the sales department for more details at:
seastarsales@fugro.no
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Services & Subscriptions