3DELRR to Move Forward with Lockheed Martin's Long-Range Radar System > Hanscom Air Force Base > Article Display
Air Power on Twitter: "Both Lockheed & Northrop are currently on contract with the AF to support #3DELRR. Lockheed has chosen to offer its L-band TPY-4 radar which is based on the
![Three-Dimensional Expeditionary Long-Range Radar System Demonstrated by Northrop Grumman | Unmanned Systems Technology Three-Dimensional Expeditionary Long-Range Radar System Demonstrated by Northrop Grumman | Unmanned Systems Technology](https://www.unmannedsystemstechnology.com/wp-content/uploads/2013/08/AN-TPS-75-Radar-System.jpg)