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KVH GEO FOG 3D DUAL INS

Codice:

Commercial Fiber Optic Gyro (FOG)-based Inertial Navigation Systems ​Dual Antenna


RUGGED, HIGH-PERFORMANCE INS AND AHRS WITH EMBEDDED GPS

The KVH GEO-FOG 3D Dual commercial off-the-shelf inertial navigation system (INS) is based on the KVH high-performance Fiber Optic Gyro (FOG) 1750 inertial measurement unit (IMU). Using advanced FOG-based technology, the GEO-FOG 3D Dual combines a centimeter-level precision RTK GNSS receiver and groundbreaking sensor fusion algorithms. The result is a navigation and control solution that delivers a data rate 10x faster than competing systems, and provides fast, accurate position, velocity, and attitude in the most demanding environments.
This dual antenna INS includes KVH’s 1750 IMU; three FOGS are integrated with three low-noise MEMS accelerometers, a 3-axis magnetometer, a pressure sensor, and a dual antenna GNSS receiver. This breakthrough INS and attitude and heading reference system (AHRS) offers precise, dependable navigation and control to a wide variety of unmanned, autonomous, and manned aerial, ground, marine and subsurface applications and platforms.

RELIABLE NAVIGATION AND POSITIONING WHEN GPS IS BLOCKED, JAMMED, OR UNAVAILABLE

The GEO-FOG 3D Dual utilizes a unique sensor fusion algorithm more intelligent than the typical Kalman filter used in many inertial solutions. This means the GEO-FOG 3D Dual can provide loosely- or tightly-coupled IMU and GNSS integration. Designed for challenging navigation and control applications, the embedded GNSS receiver supports all the current and future satellite navigation systems including GPS, GLONASS, GALILEO and BeiDou.
The INS also features a north-seeking algorithm capable of providing accurate heading as fast as 10 seconds after power-on from a hot start, and 10 minutes from a cold start. The north-seeking algorithm runs while the INS is operating, unaffected by velocity or angular motion. This enables the GEO-FOG 3D Dual to provide precise heading in environments where magnetometers and GNSS-heading can’t be used.

SMART SENSORS DESIGNED FOR MISSION CRITICAL APPLICATIONS

The rugged GEO-FOG 3D Dual INS is designed to operate in tough environments. Its built-in performance monitoring and instability protections ensure stable and reliable data, while the embedded dual frequency Trimble GNSS receiver includes Receiver Autonomous Integrity Monitoring (RAIM) to assess the integrity of satellite signals.
The GEO-FOG 3D Dual provides an intelligent navigation and control solution for robotics, manned, unmanned, and autonomous systems whether operating in the air, on land, underground or on or under water. It also offers the best solution for positioning and imaging, georeferencing, land surveying, 3D mobile mapping, and stabilization and orientation.

Specifiche Tecniche
Attributes
 GEO FOG 3D INS

Performance Fiber Optic Gyro

Fiber Optic Gyros
Technology

FOG

Input Rate (maximum)

±490°/sec

Bias Instability (25°C)

≤0.1°/hr, 1σ (max) 
≤0.5°/hr, 1σ (typical)

Bias vs. Temp (≤ 1 °C/min)

≤1°/hr, 1σ (max), 
≤0.7°/hr, 1σ (typical)

Scale Factor Non-Linearity (max rate, 25°C)

≤50 ppm, 1σ

Scale Factor vs. Temp. (≤ 1 °C/min)

≤200 ppm, 1σ

Angle Random Walk (25°C)

≤0.012°/√hr

(≤0.7°/hr/√Hz)

Bandwidth (-3dB)

≥440 Hz

Performance
Accelerometers
Technology - Accelerometers MEMS
Input Limit (maximum) ±10 g
Bias Instability (constant temp)  
Scale Factor Temperature Sensitivity 250 ppm/°C, 1σ (max),
≤100 ppm/°C, 1σ (typical)
Velocity Random Walk (25°C)

≤0.12 mg/√Hz
(0.23 ft/sec/√hr)

Bandwidth (-3dB)*

≥200 Hz

Electrical/Mechanical
Electrical/Mechanical
Initialization Time (valid data)

≤1.5 secs

Data Interface

Asynchronous RS-422 or Synchronous RS-422

Baud Rate

Selectable 9.6 Kbps to 921.6 Kbps

Data Rate

User selectable 1 to 1000 Hz

Dimensions (max)

90 mm L x 90 mm W x 88 mm 
(3.9" x 3.9" x 3.5")

Weight, max

655 grams (1.4 lbs.)

Power Consumption, max (typical)

550 mA & 12V (typical)

Environmental
Environmental
Temperature: Operating

-40°C to 75°C
(-40°F to 167°F)

Shock: Operating

25 g