Lockheed Martin Selects Linux for Missile Defense

m3lt writes "Business Wire is reporting that Concurrent announced today that Lockheed Martin Space Systems has selected RedHawk(TM) Linux as the operating system for their United States Army Theater High Altitude Area Defense (THAAD) program." From the article: "Lockheed Martin selected RedHawk for the THAAD program due to the precision and guaranteed response time of Concurrent's RedHawk Linux real-time operating system. Only RedHawk Linux was able to ensure the high frame rates required in their HIL simulation without frame overruns, thereby ensuring the highest quality of system test."

Comments

RTFA

[Anonymous Coward]

Linux will be used to *test* the system not run it.

"Lockheed Martin will use RedHawk real-time Linux in hardware-in-the-loop (HIL) simulation testing of strategic missile defense subsystems. HIL simulation is a critical product development process that provides for thorough testing of components in a virtual environment in which other subsystems are replaced by mathematical models."

HWIL = Hardware In the Loop

[everphilski]

Hardware In the Loop testing is where a missile is put basically in a 3 axis gyroscope mount so it is able to maneuver freely. In front of it is put a projection screen where RADAR images are being projected. The seeker on the missile then sends a signal to the fins to move but instead of moving fins that signal is hijacked and an algorithm figures out how the missile would have rotated in space and instead rotates the gimbal (the gyro mount) instead. A computer program tracks how the missile would have really moved in space. A RTOS comes in handy for these kinds of simulations. HWIL testing is an important step between pure software simulation and firing the actual beast because you can start to see lags in the system and test indvidual subsystems non-destructively without ever firing a missile.

-everphilski-

Re:w00t!

[wde]

Our group has one of the Concurrent "iHawk" systems on order. They're pretty sweet. Essentially, RedHawk is a Concurrent-licensed version of Montevista's HardHat Linux modified to have its scheduler driven by a Concurrent-custom hardware interrupt card (the "RCIM"). You program your interrupt frequency, tie your task to be driven by the card, and determinism goes through the roof. The computer itself is COTS server-grade stuff. Presently Concurrent is using Dells I believe.

Re:I was killed by Linux

[gatzke]

My dad works on this stuff.

Just like patriot, they shoot stuff out of the sky.

Pretty freaking amazing.

Thad is the medium range system, patriot is the small range system. There is a ICBM system that is now deployed, I think they have two intercepters in Alaska.

Re:Yeah, but it's still a stupid waste of money

[Kadin2048]

You do realize I hope that this system, THAAD, is a theater missile-defense system, not a global "Star Wars" hemisphere-defense one.

It's designed to protect strategic assets from medium range, single warhead ballistic missiles, which are exactly the thing that China, N. Korea, and other ex-Soviet client states have in spades (and are significantly easier to put together than an ICBM). The intended use is to place them as a spot defense over a high-value target, as the farthest reaches of a layered system that includes short-range defenses like Patriot, etc.

This is not an ICBM shield for the U.S. in the manner that I think you are thinking it is, that would really have any effect in the event of a global thermonuclear war. The preventative measure against that is still MAD. However when you step down from that scenario (and terrorism), the next most likely case of a nuclear weapon being used against us is with a theater ballistic missile against a strategic target like a foreign city, aircraft carrier, or air base. In a situation like that, a defensive system like this makes a lot more sense.