idk about MPRF might have been on the Aim54C+ [now known as ECCM/SEALED] or not. even though the standard aim54C had it but. something better was added to the Aim54C+ a new
TWT from the AMRAAM project was on it. It could be found at navair web.
part one found at the start of fact sheet
ETC aim54C ECCM/SEALED VERISON HAD BEEN RETROFITTED with MOD KITS AS THE aim54C+
THIS BOTTOM TEXT IS IN USE FOR THE NORMAL AIM54C IT IS SEPARATED FROM THE AIM54C+ECCM/SEALED IT COULD BE USED OR NOT.
- upgrade allowed for “All-Aspect” engagement capabilities and superior target discrimination compared to the earlier AIM-54A.
- Documentary Evidence:
Source: Page 1468, Military Posture Hearings, 1980.
Key Data: Under the “Improved Phoenix Missile” chart, the seeker is explicitly listed as: "PULSE DOPPLER HI PRF
Analysis: Unlike the AIM-54A, the ‘C’ variant utilizes High Pulse Repetition Frequency (HI PRF) Pulse Doppler. This allows the missile to discriminate targets based on range and velocity more effectively than a standard CW seeker.
“Project W0614 - AIM-54 Phoenix Improvements”
Source: Supporting Data for Fiscal Year 1984 Budget Estimates (DTIC File).
Key Data: The document states the new receiver/transmitter includes a “frequency modulated transmitter” and provides the capability to “track through the target’s beam aspect.”
Analysis: The ability to track a target in a “beam” (perpendicular) flight path is a hallmark of Pulse Doppler processing. Continuous Wave seekers of that era typically struggled or failed to maintain locks in beam maneuvers due to ground clutter or signal filtering limitations.
Source: H.R. 1872 [H.R. 4040], 1979.
Key Data: The testimony confirms the AIM-54C has an “increased high altitude capability [and] all aspect envelope,” specifically noting that the “AIM-54A has no beam aspect acquisition.”
Signal Type: Change from “Continuous Wave” to “Pulse Doppler” (or “PD”).
Seeker Capabilities: Ensure the missile can maintain locks in All-Aspect scenarios, including Beam Aspect, as supported by the “New Capabilities” diagram in the provided documents (Page 1469).
this is for aim54C but it could be used for the MPRF for the Aim 54C+ ECCM/SEALED