ANELLO Photonics, a developer of inertial navigation solutions, conducted a real-world evaluation of its ANELLO GROUND INS system, featuring the Silicon Photonic Optical Gyroscope (SiPhOG™), in a fully GPS-denied scenario at Levi’s Stadium in Santa Clara, CA.
Parking structures are among the most challenging GPS-denied environments, where zero sky visibility, dense concrete barriers, and complete GPS signal loss put navigation systems to the test.
During this specific test scenario, the ANELLO GROUND INS was benchmarked against a top industry competitor, driving 750 meters without GPS signal. Accuracy, stability, and robustness under these extreme conditions were compared.
Levi’s stadium’s multi-level location was an ideal testing location, stimulating GPS-denied scenarios commonly faced by autonomous vehicles, mobile robotics, industrial machinery, and unmanned ground vehicles (UGVs) for example, operating in tunnels, dense urban environments, or jammed conditions.
ANELLO GROUND INS Key Features
The ANELLO GROUND INS has many features making it suitable for GPS-degraded and GPS-denied environments, such as parking structures.
The system itself integrates an IMU, optical gyroscope, and advanced inertial sensor fusion algorithms to deliver continuous positioning and heading data, even in complete GPS outages.
The system also fuses data from the optical gyroscope, high-precision accelerometers, and optional inputs such as GNSS and wheel odometry, to produce robust, high-frequency positioning outputs with high accuracy and stability.
The ANELLO GROUND INS delivers high precision in severe multipath, fully GNSS-denied scenarios, with <0.5º/hr unaided heading drift for reliable orientation. It also provides reference-grade 200 Hz position, velocity, and attitude outputs, integrating on-board GNSS/INS sensor fusion.
It has sub-meter accuracy without relying on GPS, has a reduced dependence on LiDAR or vision-based sensors, and is cost-effective compared to legacy FOG systems.
ANELLO’s system also supports GPS, GLONASS, Galileo, BeiDou (Compass), and QZSS and includes automotive Ethernet and dual RS-232 interfaces for flexible integration. ANELLO’s innovation is IP68-rated, making it waterproof and resistant to dust, salt spray, and chemicals.
Test Results
Test results showed ANELLO GROUND INS maintained a precise trajectory with only 3.0 meters of cross-track error. The competitor system also drifted significantly, recording 11.3 meters of cross-track error, which is almost four times worse.
The drive highlights the ANELLO system’s ability to maintain reliable positioning and accurate dead reckoning where satellite signals are unavailable.
These capabilities make this GNSS INS system an ideal, reliable solution for autonomous navigation, robotic control, precision agriculture, construction, mapping and surveying, and defense missions, operating in GPS-denied environments.
Results also confirm the ANELLO GROUND INS’ suitability for military and industrial autonomous vehicles, logistics platforms, warehouse and port automation systems, construction and mining machinery, as well as tactical and defense applications.
Here is another example of the performance of the ANELLO GROUND INS without GPS or Wheel Odometry.
More information on the ANELLO GROUND INS >>
