Sparton Inertial Navigation System Integrates Anti-Spoofing GPS

Published: 23 Apr 2018

Sparton INS-20Sparton Corporation has announced the release of the INS-20, a MEMS-based Inertial Navigation System (INS) that integrates SAASM GPS with the heading accuracy of the Sparton AHRS-M2.

The INS-20 provides fully compliant Selective Availability Anti-Spoofing Module (SAASM) GPS security with an onboard SAASM receiver. The system integrates SAASM GPS input with sensor input from the AHRS-M2 to provide a robust INS capable of operation in GPS deprived or denied environments. The INS-20 is also capable of integrating multiple serial inputs from external sensors, allowing them to operate as part of a unified navigation system.

The INS-20 is a compact, low power INS that provides full self-location and navigation capability including latitude, longitude, altitude, heading, pitch, roll, and velocity. Ideal for SWaP-C requirements, the INS-20 is compact and weighs only 31 grams with low power consumption of 1W.

“The INS-20 really is one of a kind,” said Jim Lackemacher, Group Vice President of the Engineered Components and Products Segment. “No other inertial navigation system in its class provides the feature set of the INS-20 in such a compact and versatile package.”

Benefits of the INS-20:

  • Integrated SAASM GPS and Sparton AHRS-M2
  • Operates in GPS denied/degraded environments
  • Easily integrates additional external sensors and inputs for a unified navigation system operation
  • Compact size and weight and low power ideal for SWaP-C applications
  • Ideal for Assured Positioning, Navigation, and Timing (A-PNT) and hand-held or mounted optical targeting systems

Features of the INS-20:

  • Selective Availability Anti-Spoofing Module (SAASM)
  • SAASM GPS coupled to Sparton AHRS-M2 through AdaptNavTM filter algorithm
  • Sparton AdaptCal 3D adaptive in-field calibration with hard and soft magnetic interference compensation
  • Improved GPS tracking with position data output rate of 100 Hz
  • Static Heading Accuracy of 0.2° RMS
  • Extended performance in a jamming environment – 41 dB while tracking – 24 dB in acquisition
  • Small form factor of only 31 g for combined system
  • Full 360° rollover capability using quaternions or rotation matrix
  • “Figure of Merit” real time heading error indicator
  • Quality of in-field calibration indicator
Posted by Mike Ball Mike is our resident technical editor here at Unmanned Systems Technology. Combining his passions for teaching, advanced engineering and all things unmanned, Mike keeps a watchful eye over everything related to the unmanned technical sector. With over 10 years’ experience in the unmanned field and a degree in engineering, Mike’s been heading up our technical team here for the last 8 years.