Assured Positioning, Navigation, and Timing (APNT)
Modern defense, aerospace, and autonomous platforms rely on precise navigation to execute critical missions. However, GPS signals can be jammed, spoofed, cyber-compromised, or simply unavailable due to terrain, dense urban environments, or subsea operations. When that happens, mission success depends on resilient alternatives.
Inertial Labs delivers Assured Positioning, Navigation & Timing (APNT) solutions designed to maintain operational capability when GNSS cannot be trusted. Our platforms integrate advanced inertial sensors, multi-sensor fusion, and AI-driven algorithms to provide continuous, reliable positioning and timing – no matter the environment.
Compare APNT Solutions
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| INS-U | VINS | IRINS | INS-NV | |
| Inertial Navigation System with embedded air data computer for flight control in fixed wing applications | Complete visual navigation system with modular design made to withstand varying environmental conditions. | Inertial Navigation System with embedded LEO receiver for absolute navigation in contested environments | Programmable inertial navigation system with fast processing and industry standard interfaces for easy integration in legacy platforms | |
| GNSS-Denied Position Accuracy | 1% DT | <35 m, RMS | 80 m, RMS | Dependent on Platform |
| GNSS-Denied Velocity Accuracy | 0.5 m/s | < 0.9 m/s | 2 m/s | Dependent on Platform |
| Jamming and Spoofing Mitigation? | YES | YES | YES | YES |
| Size | 82 x 40 x 26 mm |
Sensor Module: 83 x 100 x 80 mm Processing Module: 80 x 45 x 134 mm |
IRINS: 120 x 50 x 53 mm IRINS-OEM: 86 x 51 x 48 mm IRINS-DM: 160 x 141 x 61 mm |
111 x 75 x 92 mm 107 x 68 x 92 mm (OEM) |
| Weight | < 200 grams |
Sensor Module: 330 grams Processing Module: 420 grams |
IRINS: 220 grams IRINS-OEM: 80 grams IRINS-DM: 1300 grams |
480 grams |
| Input Voltage | 5-32 V DC | 9-36 V DC | 9-36 V DC | 9-36 V DC |
| Power Consumption | <2 W | 10 W | <8 W | 15 W |
| Interfaces | RS-232, RS-422, RS-485 | RS-232, RS-422, Ethernet | RS-232, RS-422 , CAN, Ethernet | RS-232, RS-422, Ethernet, GPIO, USB 2.0, PPS output, Camera Strobe I/O |
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| INS-U | VINS | IRINS | INS-NV | |
| Inertial Navigation System with embedded air data computer for flight control in fixed wing applications | Complete visual navigation system with modular design made to withstand varying environmental conditions. | Inertial Navigation System with embedded LEO receiver for absolute navigation in contested environments | Programmable inertial navigation system with fast processing and industry standard interfaces for easy integration in legacy platforms | |
| GNSS-Denied Position Accuracy | 1% DT | <35 m, RMS | 80 m, RMS | Dependent on Platform |
| GNSS-Denied Velocity Accuracy | 0.5 m/s | < 0.9 m/s | 2 m/s | Dependent on Platform |
| Jamming and Spoofing Mitigation? | YES | YES | YES | YES |
| Size | 82 x 40 x 26 mm |
Sensor Module: 83 x 100 x 80 mm Processing Module: 80 x 45 x 134 mm |
IRINS: 120 x 50 x 53 mm IRINS-OEM: 86 x 51 x 48 mm IRINS-DM: 160 x 141 x 61 mm |
111 x 75 x 92 mm 107 x 68 x 92 mm (OEM) |
| Weight | < 200 grams |
Sensor Module: 330 grams Processing Module: 420 grams |
IRINS: 220 grams IRINS-OEM: 80 grams IRINS-DM: 1300 grams |
480 grams |
| Input Voltage | 5-32 V DC | 9-36 V DC | 9-36 V DC | 9-36 V DC |
| Power Consumption | <2 W | 10 W | <8 W | 15 W |
| Interfaces | RS-232, RS-422, RS-485 | RS-232, RS-422, Ethernet | RS-232, RS-422 , CAN, Ethernet | RS-232, RS-422, Ethernet, GPIO, USB 2.0, PPS output, Camera Strobe I/O |
Accessories
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| M-AJ-QUATRO | Air Data Computer | DTC BluSDR-30 | DWS FT743-SM | Speed Wedge MKII | |
| Description | Controlled Radiation Pattern Antenna (CRPA) technology alongside state-of-the-art signal processing capabilities, delivering enhanced jamming mitigation for critical applications. | Standalone air data computer compatible with all Inertial Labs INS devices capable of outputting pressure altitude, air speed, air density, and outside air temperature | Software defined radios that perform RF ranging by generating low probability of interception/detection (LPI/LPD) mesh-based time of flight (ToF) packets. These serve as aiding data streams for IL’s cutting-edge inertial navigation solutions capable of performing advanced sensor fusion for GNSS-denied position triangulation. | Digital wind sensor capable of measuring wind speeds up to 75m/s in harsh environments where there is significant vibration or electrical noise | True-ground speed sensor and active motion detector for moving objects, based on Radar Doppler technology, capable of measuring speed up to 200 km/h |
| Application | Interference suppression in GNSS contested environment | Aiding data for navigation systems in VTOL and fixed-wing UAVs | Aiding data for absolute positioning and navigation in aerial applications | Aiding data for navigation systems in multirotor and helicopter UAVs | Aiding data for navigation of unmanned ground vehicles (UGVs) and rail applications |
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| M-AJ-QUATRO | Air Data Computer | DTC BluSDR-30 | DWS FT743-SM | Speed Wedge MKII | |
| Description | Controlled Radiation Pattern Antenna (CRPA) technology alongside state-of-the-art signal processing capabilities, delivering enhanced jamming mitigation for critical applications. | Standalone air data computer compatible with all Inertial Labs INS devices capable of outputting pressure altitude, air speed, air density, and outside air temperature | Software defined radios that perform RF ranging by generating low probability of interception/detection (LPI/LPD) mesh-based time of flight (ToF) packets. These serve as aiding data streams for IL’s cutting-edge inertial navigation solutions capable of performing advanced sensor fusion for GNSS-denied position triangulation. | Digital wind sensor capable of measuring wind speeds up to 75m/s in harsh environments where there is significant vibration or electrical noise | True-ground speed sensor and active motion detector for moving objects, based on Radar Doppler technology, capable of measuring speed up to 200 km/h |
| Application | Interference suppression in GNSS contested environment | Aiding data for navigation systems in VTOL and fixed-wing UAVs | Aiding data for absolute positioning and navigation in aerial applications | Aiding data for navigation systems in multirotor and helicopter UAVs | Aiding data for navigation of unmanned ground vehicles (UGVs) and rail applications |
Use Cases for APNT
ISR Drone Navigation
In an increasingly complex electronic warfare (EW) environment, intelligence, surveillance, and reconnaissance (ISR) drones need to have increased GNSS resilience. The VisualAided INS (VINS) integrates a tactical-grade IMU with an IR or Day camera to create a robust GNSS-denied navigation solution utilizing highly intelligent map-matching algorithms and sensor fusion filtering.
Land Vehicle Navigation
Accurate navigation in GNSS-denied or contested environments is paramount for mission success for crews in ground vehicles such as UGVs. The Inertial Labs LEO-Aided IRINS utilizes signals that are 1000x stronger than GNSS to provide absolute positioning for land vehicles. Additionally, Inertial Labs’ proven Tunnel Guide algorithm provides reliable orientation data and mitigates positioning drift derived from inertial sensors in free inertial instances.
Marine Vessel Navigation
Due to environmental or purposeful GNSS outages, uncrewed vessels such as USVs require reliable navigation information without GNSS to perform inspection, monitoring, and surveillance operations. Inertial Labs INSs can work with doppler velocity logs (DVLs) to provide highly accurate velocity information and thus mitigate position errors. Additionally, the IRINS utilizes LEO constellations to provide absolute positioning in GNSS denied environments.Loitering Munitions
Loitering munitions are increasingly targeted with GNSS interference and therefore resilient PNT is mission critical for these applications. The Inertial Labs INS-U integrates an embedded Air Data Computer (ADC) for precise velocity estimation and positional drift mitigation for aerial applications. For longer-term denied environment, the VINS utilizes map-matching and sensor fusion algorithms to create a robust GPS-denied visual positioning system (VPS).
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