Subsea Navigation
Greensea IQ - INSpect GS Navigation
Modifiable commercial inertial navigation systems optimized for specific applications.
The INSpect GS Inertial Navigation Systems (INS) can be modified to optimize performance for diverse, complex operational scenarios where there are size, weight, power, and cost (SWaP-C) constraints. A product of over a decade of development and testing, the INSpect GS line features Greensea’s proprietary Kalman estimation algorithms, which fuse data from available navigation aiding sensors and filter out noise and outliers to deliver stable and accurate navigation estimates. Meanwhile, Greensea’s patent-pending autonomous heading alignment algorithms ensure the best navigation performance for any operational scenario.
The INSpect GS INS products are based on Greensea’s universal software framework for marine robotics, OPENSEA, which allows them to support a wide variety of aiding sensors used in the marine industry (e.g. IMU, AHRS, USBL, sonar, DVL, GPS, altimeter, pressure). They are an excellent choice for applications requiring accurate, low-cost, performance navigation to enable vehicle control, station keeping, platform stabilization, and sensor fusion.
Greensea IQ Navigation Products
INSPECT GS1 : Value Driven OEM INS Software
The INSpect GS1 delivers Greensea’s core navigation engine as an OEM solution. This gives the manufacturer full control over which aiding sensors will be integrated, allowing for the ideal configuration based on the task. The GS1 can be delivered in firmware, a topside solution, or a small subsea bottle, allowing for significantly more flexibility for SWaP-C constraints and more complete integration with the entire vehicle system than a COTS INS can deliver. The GS1 is a fully-incorporated part of a unified, optimized robotic system.
INSPECT GS3: Commercial MEMS INS Modifiable for OEM
Flexible, Scalable COTS or MOTS Options
The GS3 and GS4 are integrated aided inertial navigation systems that use the GS1 INS engine along with a defined set of internal sensors, with wide support for most aiding sensor configurations common in the subsea industry. Similar to the GS1, they can be custom configured for optimal performance for specific navigation and localization applications where performance and accuracy are required.
GS3: Inspection class and light work class ROVs are being asked to do more than ever before. This small, low-cost inertial navigation system (INS) is designed to provide accurate navigation necessary for today’s complicated tasks. With a depth sensor, MEMS inertial measurement unit, and magnetic digital compass, the INSpect GS3 provides a solid navigation solution to support advanced vehicle control features such as station keeping and waypoint following.
INSPECT GS4: Commercial FOG INS Modifiable for OEM
Flexible, Scalable COTS or MOTS Options
The GS3 and GS4 are integrated aided inertial navigation systems that use the GS1 INS engine along with a defined set of internal sensors, with wide support for most aiding sensor configurations common in the subsea industry. Similar to the GS1, they can be custom configured for optimal performance for specific navigation and localization applications where performance and accuracy are required.
GS4: The INSpect GS4 FOG INS is an easy-to-install, fully-integrated system that provides a robust and accurate navigation and attitude solution. The GS4 features a triaxial fiber-optic gyro (FOG) with an integrated MEMS accelerometer pack, and supports feature-based localization using a forward-looking sonar. Based on the OPENSEA software framework, the INSpect GS4 comes preconfigured to use multiple aiding sensors, like DVL, USBL, LBL, GPS, turns counter, odometer, altimeter, and alternate orientation sensors. The embedded Extended Kalman Filter engine fuses the data from all available aiding sensors with the high-rate inertial core to produce an accurate and stable navigation solution. Like the GS1 and the GS3, the GS4 can be customized for specific applications.