AN/APG-70
The APG-70 was a 1980s redesign of the APG-63 for greater reliability and easier maintenance. Additionally, gate array technology enabled the APG-70 to incorporate new modes with enhanced operational capabilities. To reduce production costs, many of the upgraded radar's modules are common with the F/A-18's APG-73 radar, while the computers / processors share a 85% commonality with that of the F-14's APG-71 radar.
APG-70 systems were originally installed on later model F-15C/D aircraft, but have since been replaced on those aircraft by the APG-63(V)1. As with the basic APG-63, the APG-70 is no longer in production; but it is still in service on the F-15E Strike Eagle, the Israeli F-15I and the Saudi F-15S. Also, as with APG-63, APG-70 also comes in two versions, both have identical air-to-air capabilities, but slightly different air-to-ground capabilities: APG-70 on F-15Is and F-15Ss exported to foreign customers has lower performance in that the resolution of Doppler Beam Sharpening (DBS) / Mapping / Synthetic Aparture Radar (SAR) modes for the APG-70 on F-15E of USAF is at least three times better than that of the APG-70 on F-15I and F-15S.
Read more about this topic: APG-63 And APG-70