Additional radar risk-reduction flight tests using a modified Lockheed Martin NC-130H are planned later this year to support development of the US Navy's Northrop Grumman E-2D Advanced Hawkeye (AHE) airborne early-warning aircraft.
A new APY-9 radar developed by Lockheed and offering improved overland and littoral performance is at the heart of the E-2D. The radar combines mechanical rotation and electronic scanning, and uses a filtering technique known as space-time adaptive processing to overcome ground clutter.
Whereas the radar in the NC-130 testbed has a silicon-based transmitter, the APY-9 is silicon carbide-based, which will increase power and range over the E-2C's APS-145 radar, says Cdr Adam Ferriera, AHE integrated product team co-lead.
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