CSSC Star&Inertia Technology co.,ltd.

A cutting-edge Laser Inertial Navigation System (L-INS) utilizes ring laser gyroscopes (RLGs) to form the core of a high-grade Inertial Measurement Unit (IMU). It delivers exceptionally low bias instability, minimal angular random walk, and superb scale factor linearity, achieving navigation-grade or strategic-grade performance. This system provides precise, continuous attitude, velocity, and position data without any external references, relying solely on inertial sensing.

Usage

The L-INS is the primary navigation source in applications where long-term autonomous operation, high reliability, and accuracy are critical. It is initialized with an initial position, velocity, and attitude (alignment), after which it independently calculates all navigation parameters through dead reckoning. Its core function is to provide a stable and accurate navigation solution in GNSS-denied environments.

Interface

The system provides comprehensive data via industry-standard digital interfaces housed in ruggedized connectors (e.g., MIL-DTL-38999 series).

Primary Data Interface:​ High-speed Ethernet (e.g., 100BASE-TX) or serial (e.g., MIL-STD-1553) for outputting time-synchronized navigation data packets. Standard outputs include:

PVA Solution:​ Latitude, Longitude, Altitude; North, East, Down Velocity; Roll, Pitch, Heading.

Raw/Compensated Inertial Data:​ Angular rates and specific forces from the RLG/accelerometer triad.

System Status:​ Health, alignment status, figure of merit.

Time Synchronization Interface:​ Pulse per Second (PPS) input/output and IRIG-B timecode input for precise synchronization with GPS or system time.

Discrete I/O:​ Alignment control signals, system reset, and operational mode commands.

Integration Partners (Typical GNSS/INS Architectures)

This L-INS is designed for deep integration with other systems, primarily in tightly coupled or deeply coupled fusion architectures:

Global Navigation Satellite System (GNSS) Receiver:​ Forms a GNSS/INS​ system. The INS provides high-bandwidth data and bridges GNSS signal outages, while GNSS provides periodic position/velocity updates to bound the INS drift. This is the most common and critical integration.

Doppler Velocity Log (DVL):​ For submarine and unmanned underwater vehicle (UUV) navigation, forming a DVL/INS​ system. DVL provides accurate bottom-track or water-track velocity to aid the INS.

Terrain Referenced Navigation (TRN) System:​ For aircraft, creating a TRN/INS​ system. A radar altimeter or LiDAR provides terrain profile data, which is matched to a digital map to update the INS position.

Star Tracker (Celestial Navigator):​ For spacecraft, high-altitude aircraft, and strategic platforms, forming a CNS (Celestial Navigation System)/INS. The star tracker provides absolute attitude updates to correct long-term gyro drift.

Air Data Computer (ADC):​ For aircraft, providing barometric altitude and true airspeed as auxiliary updates to the navigation filter.