Leading the Embedded World

Embedded GPS/INS-Modernization (EGI-M) program for Northrop Grumman

Based upon a modular, open-systems architecture, EGI-M supports rapid insertion of new capabilities to enable robust, accurate, and reliable positioning, navigation, and timing (PNT) information, even in GPS-denied conditions. EGI-M incorporates a military code (M-code) GPS receiver that adds robustness to interference of GPS signals. The lead platforms for EGI-M are Northrop Grumman's E-2D Hawkeye and Lockheed Martin's F-22 Raptor, but it is designed to be scalable to any manned platform and larger unmanned vehicles.

Using the INTEGRITY-178 tuMP RTOS, EGI-M's embedded architecture features model-based partitioned software that is capable of meeting DO-178C certification while utilizing a multicore processor. As with other avionics upgrade programs, a major goal for the U.S. Air Force on the EGI-M program is to enable to a much more flexible open systems architecture that is also secure. Naveen Joshi, director of strategy and business development for Northrop Grumman's navigation and positioning systems business unit, said this was one of the leading factors behind their decision to select the INTEGRITY-178 RTOS. It will also support Northrop's goal of achieving MSO-C145 certification, which the U.S. military uses to assess the performance of airborne navigation sensors.

Northrop Grumman E-2D Hawkeye
(Image courtesy US Air Force)

Northrop selected the INTEGRITY-178 tuMP RTOS running on a quad-core ARM® Cortex®-A53 CPU to meet the EGI-M requirements. Key factors in the selection of INTEGRITY-178 tuMP were:

  • the ability to run a DAL-A partition across multiple Cortex-A53 cores;
  • built-in DAL-A functionality and tools for mitigating multicore interference per CAST-32A;
  • certified conformance to the FACE 3.0 Technical Standard, including all the multicore requirements;
  • support for ARINC 653 Part 2 Multiple Module Schedules across multiple cores;
  • a proven Multiple Independent Levels of Security (MILS) service history and certification pedigree; and
  • flexible core assignment by the integrator, enabling optimal core utilization and maximum spare capacity for future growth

Northrop Grumman F-22 Raptor
(Image courtesy US Air Force)

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