Lockheed Martin Corp. said today it will participate in a two-year, $20-million contract to develop space-situation awareness for the U.S. Air Force Space and Missile Systems Center.

Most of the work will be done in Valley Forge, where Lockheed has major operations, and in Azusa, Calif. Northrop Grumman Corp. will be a partner on the project.

The system they develop will allow the Air Force to identify objects in space and enable personnel to make decisions to respond, a Lockheed spokesman said. The objects include satellites and weather-related debris, such as charged particles from solar flares.