In 1985, Ericsson Microwave Systems were contracted by the Swedish Defence Material Administration to develop what would become the PS-890 Erieye AEW radar.

[6][7] The Erieye AEW&C mission system radar is an active, phased-array, pulse-doppler sensor that can feed an onboard operator architecture or downlink data, via an associated datalink subsystem, to a ground-based air defence network.

The beam is electronically scanned, which provides for improved detection and significantly enhanced tracking performance, compared with radar-dome antenna systems.

Erieye detects and tracks air and sea targets out to the horizon, and sometimes beyond this due to anomalous propagation — instrumented range has been measured at 450 kilometres (280 mi).

Other system features include: Adaptive waveform generation (including digital, phase-coded pulse compression); Signal processing and target tracking; track while scan (TWS); low side lobe values (throughout the system's angular coverage); low- and medium-pulse repetition frequency operating modes; frequency agility; Air-to-air and sea surveillance modes; and target radar cross-section display.

[8] GlobalEye consists of a suite of sensors using Erieye ER (Extended Range) radar and mission system, installed in the Bombardier Global 6000 long-range business jet.