G-NAV is part of GEOD®, the products deisgned and manufatured by Cadden. G-NAV is a system that combines accurate GNSS positioning (X, Y and Z) and attitude measurement (Heading, Roll, Pitch) in the same box. All this data is permanently required for navigation.
The first G-NAV advantage is the absence of lever arm management between the GNSS receiver and the miniature IMU system, as the 2 sensor installations are fixed and joined together.
G-NAV, fully designed by Cadden, is proposed with a wide range of performance choices:
- there are several GNSS receiver versions available: GPS, Glonass, Galileo, BeiDou, with submetric (SBAS) to centimeter accuracies (RTK).
- the miniature IMU system, using MEMS technology, is proposed with several levels of accuracy: from 2° to 0.1° attitude, with the possibility of keeping the position for several dozen seconds.
In cases where the IMU system magnetometers are not sufficiently robust for the electro-magnetic environment, the Heading can be obtained by adding an external antenna for a calculation using a GNSS compass, thereby guaranteeing the measurement, even when static.
Compactness is also a strength, the power supply and the data transit through a single Ethernet POE cable (Power On Ethernet).
The internal Webserver has the functions to configure and track the measurements, therefore eliminating the need for any external software.
More details on Cadden’s products
An example of G-NAV integration in a Mobile Mapping System, by Bouygues Energies & Services : Get Your Space