Northrop Grumman Corp. has announced a corporate restructuring that includes streamlining its business sectors. The defense contractor based in Falls Church, Va., will merge its electronic systems sector with part of the information systems sector to create the new mission systems sector. The electronic systems sector includes the navigation systems division, headquartered in Woodland Hills. That division develops and manufactures navigation and position systems to provide location and direction information for aircraft, satellites, missiles and ships. A second new sector, technology services, will be formed by merging part of the information system sector with the technical services sector that provides logistics and supply chain management. “These changes align more closely with the evolving missions of our customers in the global security markets we serve,” Northrop Chief Executive Wes Bush said in a prepared statement. The aerospace systems sector, with a facility in Palmdale for manufacturing the Global Hawk unmanned aircraft and maintenance and upgrades on the B-2 Spirit stealth bomber, remains unchanged.