INS inertial system Boreas A50

AHRSgyroscopicwith integrated dual-antenna GPS

Overview
The Boreas 50 Series is a compact, rugged inertial navigation system with a north‑seeking FOG gyrocompass that provides reliable navigation in GNSS‑denied and harsh environments. The series delivers centimetre‑level GNSS RTK horizontal positioning, sub‑degree heading from gyrocompassing, and high accuracy in roll and pitch.

Key performance figures

• Horizontal position accuracy (GNSS RTK): 0.01 m (CEP50).
• Roll & pitch accuracy (gyrocompass): 0.03° RMS.
• Heading accuracy (gyrocompass, GNSS denied): 0.5° × sec(lat), 1σ (≈ 0.7° RMS at 45° latitude).
• Dual GNSS antenna heading (with sufficient baseline): 0.01° RMS (0.1° RMS at 1 m baseline).
• Dynamic motion heading (with GNSS aiding): < 0.1° RMS (typical).

Variants

• A50 — AHRS/INS providing north‑seeking gyrocompass heading and orientation.
• D50‑X20P — dual‑antenna all‑band GNSS receiver with dual‑antenna heading capability.
• D50‑MX5 — dual‑antenna multi‑band GNSS receiver with electronic protection option for jamming and spoofing resilience.

Features

• FOG technology: fibre‑optic gyroscope in a closed‑loop optical coil with spread‑spectrum digital modulation for improved stability and reduced SWaP‑C.
• Gyrocompass north‑seeking: determines heading from Earth rotation without GNSS or magnetometer dependence; operable in static and dynamic conditions and at high latitudes.
• Ruggedisation & certification: precision aluminium enclosure rated IP67; designed and tested to MIL‑STD‑461 and MIL‑STD‑810H; resilient to shock and vibration.
• Interfaces & protocols: Ethernet, CAN, RS232/RS422, 1PPS, GPIO; supports NMEA 0183, CANopen, ANPP and a responsive embedded web interface.
• Data logging: internal storage for up to one year of logging; onboard tools for configuration and data access.

Applications

• Tactical and armoured vehicles
• Pointing and stabilization platforms
• Maritime vessels and unmanned surface vehicles
• Drill rig alignment and survey equipment
• Fleet management and asset tracking
• ROV/AUV navigation and subsea operations

Technical specifications

• Model / series: Boreas 50 series (A50, D50‑X20P, D50‑MX5).
• Horizontal Position Accuracy (GNSS RTK): 0.01 m (CEP50) — all variants.
• Heading Accuracy — Gyrocompassing (GNSS denied): 0.5° × sec(lat), 1σ (≈ 0.7° RMS at 45° lat) — A50 and D50 variants.
• Roll & Pitch Accuracy — Gyrocompassing (GNSS denied): 0.03° RMS — all variants.
• Heading Accuracy — Dual GNSS Antenna: 0.01° RMS (0.1° RMS with 1 m baseline; 0.01° RMS with ≥2 m baseline).
• Roll & Pitch Accuracy — Dual GNSS Antenna: 0.03° RMS.
• Heading Accuracy — Dynamic Motion (with GNSS aiding): < 0.1° RMS (typical).
• Gyroscope — Null bias: 0.5°/hr (1σ); scale factor error: 50 ppm (max); range: ±490°/s (other ranges on request); bias instability: 0.05°/hr (max).
• Accelerometer — Null bias: 30 mg (1σ); scale factor error: 300 ppm (max); range: ±10 g (other ranges on request); bias instability: 10 μg (max).
• Dimensions: A50 — 94 × 94 × 85 mm; D50‑X20P / D50‑MX5 — 94 × 94 × 95 mm.
• Weight: A50 — 850 g; D50 variants — 910 g.
• Power consumption (typical): 10 W.
• Input operating voltage: 9–36 V.
• Operating temperature: −40 to 75 °C.
• Pressure sensor range: 30–125 kPa.
• Protocols supported: ANPP, NMEA 0183, CANopen, 1PPS; supports aiding sensors (odometer, DVL/USBL, air data, zero velocity, NMEA I/O, GNSS).
• Interfaces: 1 × Ethernet, 1 × RS232/RS422, 2 × GPIO, 1 × CAN, 1 × 1PPS.
• Data logging & UI: internal storage up to one year; responsive embedded web interface for configuration and data access.
• Environmental & EM standards: designed to MIL‑STD‑461G and MIL‑STD‑810H; IP67 enclosure.
• Notes: D50‑X20P dual‑antenna heading availability per vendor; D50‑MX5 electronic protection option for jamming/spoofing resilience.