Alternative Navigation Systems
Critical Solutions for GPS Denied Environments
Honeywell is proud to introduce a multitude of alternative navigation offerings (e.g., vision, radar) to aid and augment availability, integrity, and performance of inertial navigation solutions to combat GPS disruptions.
Small Unmanned Aerial Services
Large UAS/Military Aircraft
Delivering You An Edge
Maximum Performance – with multiple systems onboard for increased situational awareness.
Consistent Availability – Navigation is critical to flight; this solution makes sure you have navigation available when you need it most.
System Integrity – solution keeps you protected from spoofing and jamming so you can trust the integrity of what you are reading.
Unrivaled Size. Weight and Power – Solution has strong performance here compared to other systems.
What is Alternative Navigation?
Alternative navigation systems use sensors such as cameras, LiDAR, radar, radios and star trackers to augment and/or aid inertial navigation systems. The intent of these systems is to provide corrections to inertial navigation systems in GNSS-denied environments. Simply put Alternative Navigation helps pilots or unmanned aerial vehicles navigate when the primary source isn’t working or is denied.
Why We Need Alternatives to GNSS
Position and timing signals from global navigation satellite systems (GNSS) have become the primary source of navigation for vehicles across air, land and sea. GNSS has seen a significant increase in intentional and unintentional disruptions including jamming and spoofing. Unintentional disruptions, on the other hand, can be due to multi-path errors and are very common in urban environments. These disruptions can last from a few seconds to several hours. Hence, it is imperative to understand and partner with our customers to engineer alternatives to GNSS based navigation to improve performance in civilian and military applications.
Our Large UAS/Military Aircraft Portfolio
Honeywell’s Vision Aided Navigation system uses live camera feed (optical and/or IR) and compares it with maps to provide a passive un-jammable highly accurate absolute position. This was demonstrated on Embraer E170 and achieved a GPS like performance (i.e., horizontal position accuracy of 10m CEP50) during GPS denied conditions.
Honeywell’s Celestial Aided Navigation system utilizes star tracker to observe stars and Resident Space Objects (RSOs) to provide a passive un-jammable solution with GPS-like accuracy in GPS denied or spoofed conditions. This was recently demonstrated on a land vehicle and achieved an accuracy of 30m CEP50.
MAGNETIC ANOMALY AIDED NAVIGATION
Honeywell’s Magnetic Anomaly Aided Navigation system measures earth’s magnetic strength and compares with magnetic maps to accurately identify the position of the vehicle. The technology was successfully demonstrated on Embraer E170 recently.
How it Works – Layers of Protection
Going Beyond Inertial Navigation
One of the alternatives to GNSS is inertial navigation. Inertial navigation is based on the principle of “dead reckoning” and utilizes inertial sensors such as accelerometers, gyroscopes and magnetometers to get position, velocity and heading. One advantage of inertial navigation is that it can work in all environments. However, inertial navigation drift errors accumulate over time and if they’re not corrected, this can lead to large position and attitude errors. To correct these errors at regular intervals, we need GNSS signals. Therefore, inertial navigation is still dependent on GNSS and prolonged GNSS disruptions can make inertial navigation ineffective.
Small UAS Portfolio
GPSdome by InfiniDome
GPSdome is a small sized, add on device that provides protection against GPS jamming, ensuring continuity of autonomous navigation and operation during jamming conditions.
GPSdome is compatible with any GNSS receiver on the market and with any off the shelf GNSS antenna. GPSdome does not include the GNSS receiver or the antennas.
Honeywell Compact Inertial Navigation System
The size of a deck of cards, the Honeywell Compact Inertial Navigation System (HCINS) uses tactical-grade inertial sensors to provide centimeter-level accuracy to commercial and military customers.
The HCINS outputs position, orientation and velocity data.
Honeywell Radar Velocity System
The Honeywell radar velocity system (HRVS) is a small, light weight, low power and low-cost radar-based, velocity aiding system for inertial navigation systems.
The HRVS uses mmWave sensing technology (60-64GHz or 76-81 GHz) and outputs range, velocity and angle of objects.
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