Attitude & position

GNSS/INS Low-cost

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What is GLAD?

Intended for drone or any other moving vehicle,
in terrestrial or maritime domain.

Low cost, accurate, and improved integrity
attitude

Attitude (Roll, pitch and heading) provided by fusion of low-level GNSS measurements, and low cost IMU and barometer data through a double differences and tight integration algorithms supporting a multi-receiver approach (up to 4 GNSS receivers/3 baselines).

Position accuracy and integrity improvement

Thanks to an improved position algorithm.

RTK capabilities integration with no need for a user provided local base station.

Highlights

01. INTEGRITY

Both in position and attitude. Can provide output in harsh environment situations, in which other platforms do not provide such output.

02. MODULARITY

RTK capabilities can be included as an option.
Selectable number of GNSS receivers depending on performance requirements and integration limitations.

03. NO NEED FOR MAGNETOMETERS

Magnetometers are not needed to provide attitude data when more than one antenna is used, thanks to the DD algorithm.

04. EASY

Easy to be configured and operated, few parameters to be configured for specific vehicles.

05. LOW COST

When compared with other products with similar performance.
01.

integrity

Both in position and in attitude

GLAD offers improved attitude and position integrity thanks to the smart fusion of GNSS data with IMU and barometer data.

Attitude integrity

GLAD TI Yaw (blue) vs valid Ref Yaw (green). Integrity=77.8004%
GLAD TI Pitch (blue) vs valid Ref Pitch (green). Integrity=77.8004%
GLAD TI Roll (blue) vs valid Ref Roll (green). Integrity=77.8004%

The figure shows for a terrestrial vehicle scenario, the Roll, Pitch and Heading components of the attitude output of  GLAD TI system (in blue) versus another commercial system. 

The latter system was used as ground reference for attitude accuracy assessment (as it also relies on DDs, but without INS fusion, with longer baselines than the ones used for GLAD system). 

It can be verified how GLAD is capable to offer attitude output in important time intervals where the ground reference cannot offer a valid attitude output.

Position integrity

GLAD system offers improved position integrity. 

For instance, if offers better accuracy in environment of urban canyon than RTK-based references without INS fusion. 

Moreover, the fusion of barometer data enables faster recovery from outage scenarios.

02.

modularity

RTK capabilities can be included or not upon user request.

In case RTK is included, no user provided Base Station is required. So, a just “plug and play” RTK solution is possible with GLAD. Only a SIM card and the configuration parameters for accessing a remote CORS are needed.

Solutions of competitors require the inclusion of a user provided base station on land.

Depending on the user application, mechanical limitations or demanded performance, the user may decide the number of antennas in its GLAD product.

Flexible to adapt to different setups.

Contact us for additional customization option depending on specific requirements.

03.

no need for magnetometers

The DD algorithm permits the calculation of the attitude data with no need to integrate a magnetometer. This mainly affects the yaw calculation.

The absence of magnetometers avoids the need for calibration whenever the operation environment is modified.

Moreover, this avoids possible malfunctioning of the system if the magnetic fields is modified from one are to another.

No need for complicated maneuvers (e.g., make turns on the drone) during the initial static auto-calibration.

04.

easy

EASY TO BE CONFIGURED AND OPERATED:

Only a few parameters must be set after GLAD mechanical integration:

Relative position of antennas and GLAD board.

Selection of profile: terrestrial vehicle, drone or unlimited (manual selection of advanced parameters like filters, course-as-yaw or stationary-yaw-lock).

In case of using RTK: CORS access information and the SIM operator credentials.

05.

all at low cost

GLAD provides a minimum cost solution.

Capable to provide high class performance on several key aspects of a navigation system, i.e. attitude & position accuracy, integrity, modularity & flexibility and configuration of use.

Products & prices

You can choose between our three product lines:

PLANTHOPPER

1 GNSS Rx, low cost IMU, barometer and INS.
Tight Integration (TI).

MORE INFO
PLANTHOPPER+

Enhanced with RTK and GPRS modules.

MORE INFO
FIREFLY

2 GNSS Rx, low-cost IMU, barometer and INS.
Double differences (DD) and Tight integration (TI).

MORE INFO
FIREFLY+

Enhanced with RTK and GPRS modules.

MORE INFO
DRAGONFLY

4 GNSS Rx, low-cost IMU, barometer and INS.
Double differences (DD) and Tight integration (TI).

MORE INFO
DRAGONFLY+

Enhanced with RTK and GPRS modules.

MORE INFO

We will soon include FAQs. Feel free to contact us for any question you might have