LLN GZ Hybrid Inertial Land Navigator LITEF


Inertial navigation system with MEMS-IMU

The right solution for vehicle and mission

The LLN-GZ is an inertial navigation system with six degrees of freedom. At the same time, the function is available as an attitude reference system that provides inertial sensor data such as rotational speeds and acceleration figures for feedback control and stabilisation tasks. Because it is compatible in terms of installation and wiring with the tried-and-tested LLN-GY vehicle navigation system, the LLN-GZ offers the user the scope to choose an appropriate vehicle-dependent or even mission-dependent system.

The LITEF LLN-GZ comes with RS-422, CAN-BUS and Ethernet interfaces to the avionics. It supports standard NATO GPS receivers as well as several commercial GPS receivers. The combination of gyro unit with an external GPS receiver constitutes a cost-effective solution for the life cycle of a vehicle navigation system in military use. With an anticipated service life of more than 20 years, the logistics of changing the GPS component (e.g. to M-code GPS or Galileo) must be possible with minimum inconvenience. The inertial component (MEMS-IMU) is retained when the GPS receiver is replaced, and it guarantees a reliable navigation solution, even when the enemy is using jammers.

In standard mode, the LLN-GZ provides a hybrid navigation solution, i.e. optimum position and attitude information calculated from the sum total of sensor data.

All LITEF navigation systems are developed, acceptance tested, produced and supplied right around the world in and from Freiburg. Since the sensor solution as well as the navigation algorithms are all from a single source, LLN navigators provide a hitherto unachieved level of system integrity upon which the driver, commander and the higher-level guidance system can depend upon at all times.

LLN-GZ data sheet