ANELLO GNSS INS
PERFORMANCE IN A PARKING STRUCTURE
ANELLO GNSS INS PERFORMANCE IN A PARKING STRUCTURE
Parking structures are among the most extreme GPS-denied environments, presenting a formidable challenge for any inertial navigation system. With zero sky visibility, dense concrete barriers, and no access to
GPS signals, they expose the true capabilities of a navigation system’s dead reckoning and sensor fusion
performance.
In this real-world test, ANELLO Photonics showcases the power of the ANELLO GNSS INS system, featuring a Silicon Photonic Optical Gyroscope (SiPhOG™), in a fully GPS-denied scenario at Levi’s Stadium in Santa Clara, CA. The ANELLO GNSS INS is benchmarked against a top industry competitor to evaluate accuracy, stability, and robustness in high-interference environments.
BACKGROUND
Levi’s Stadium’s multi-level parking structure offers an ideal testing ground for autonomous vehicle
navigation without GPS. With a total drive path of 750 meters inside the structure, this test simulates the type of GPS-denied navigation environment commonly encountered by autonomous vehicles, mobilerobotics, industrial machinery, unmanned ground vehicles (UGVs), automated port equipment, warehouse AMRs, and defense platforms operating in tunnels, urban canyons, dense foliage, or jammed environments.
The ANELLO GNSS INS integrates our IMU with optical gyroscope and advanced inertial sensor fusion algorithms to ensure uninterrupted positioning and heading data, even in complete GPS outages. This makes it uniquely suited for robotics, unmanned vehicles, surveying, military platforms, and autonomy at scale.
THE ANELLO GNSS INS SOLUTION
The ANELLO GNSS INS combines advanced optical gyroscope technology with an AI-based sensor fusion engine to deliver high-accuracy positioning and orientation, even in GPS-denied conditions.
Driven by ANELLO’s optical gyroscope technology, the ANELLO GNSS INS delivers industry-leading performance in GPS-degraded and GPS-denied conditions. The system fuses data from its optical gyroscope, high-precision accelerometers, and optional inputs such as GNSS and wheel odometry to generate robust, high-frequency positioning outputs with exceptional accuracy and stability.
- Accurate in severe multipath and GNSS denied
- < 0.5º/hr unaided heading drift for reliable orientation
- Reference-grade 200 Hz Position, Velocity, and Attitude output
- On-Board GNSS/INS Sensor Fusion
- Automotive Ethernet, Dual RS-232 Interfaces
- GPS, Glonass, Galileo, Beidou (Compass), QZSS
- IP68 - Waterproof, Resistant to Dust, Salt Spray and Chemicals
- Optimized for autonomous navigation, robotic control, precision agriculture, construction, mapping/surveying, and defense missions
Fig. 1: The ANELLO GNSS INS. The ideal companion for navigation and positioning in Orchards
TEST DRIVE RESULTS IN PARKING STRUCTURE
We put the ANELLO GNSS INS to the test, side by side with a top competitor, by driving 750 meters through a parking structure with zero GPS signal. The results of this real-world test are below and highlight the strength of the ANELLO GNSS INS
performance when satellite signals disappear.
RESULTS AND BENEFITS
This test drive highlights ANELLO’s unmatched ability to deliver accurate dead reckoning and maintain rock-solid positioning without relying on external signals. This performance transforms autonomous vehicles (military and industrial), autonomous trucks and logistics platforms, warehouse and port automation systems, construction and mining machinery, as well as tactical and defense systems
operating in GPS-denied environments where reliability is essential.
ANELLO GNSS INS maintained a precise trajectory with only 3.0 meters of cross-track error
Competitor 1 drifted significantly, recording 11.3 meters of cross-track error, which is nearly 4x worse
PARKING STRUCTURE | ANELLO VS COMPETITOR1
Fig. 2: Performance of ANELLO GNSS INS vs. Competitor 1 at Levi’s Stadium Parking Garage, San Francisco
This case study demonstrates the ANELLO GNSS INS’s outstanding capabilities in GPS-denied environments. Whether deployed in dense urban settings, underground infrastructure, or complex industrial sites, ANELLO provides reliable navigation with: