Positioned RTK
Positioned RTK subscription relies on the Geoscience Australia (GA) network of Global Navigation Satellite System (GNSS) stations, covering Australia, Antarctica, and the Pacific region.
Positioned RTK grants instant access to RTK positioning services using a network of permanent, continuously operating reference stations. Positioned RTK users can access calculated corrections to obtain centimetre-level position accuracy. This is derived from all available GNSS satellites and a well-established network of on-ground base stations.
Coordinate systems
Positioned RTK provides the corrections in both GDA94 and GDA2020 as indicated at the start of each mountpoint.
Solution types
Positioned RTK also offers different types of solutions for our clients.
NEAR is a single base solution which provides the correction messages from the nearest GNSS base station. It is useful when you are less than 10km from a base station and require a consistency and repeatability result.
VRS Virtual Reference Station (VRS) solution provides the correction messages from the network of GNSS basestations. When connecting to a VRS mountpoint, our server will derive a virtual basestation right where you are. Therefore, it will work as though there are a basestation right next to you. This mountpoint can be used anywhere in our network to provide an accurate result even when the base stations are far away.
Types of messages
Positioned RTK also provides different message types to cater for different type of receivers. We mainly focus on the RTCM message which is industry standard of sending and receiving GNSS correction data.
MSM Multi Signal Message (MSM) is a type of RTCM message which offers the best correction message available. It contains multiple frequencies from multiple satellite constellations, and it is also compatible with wide ranges of receivers.
RTCM3.0 is a predecessor of MSM message type. It is compatible with a wide variety of receivers including the older models. However, this message type only broadcast the correction for GPS and GLONASS constellations.
