@molnibalage said in 4.37.3 AIM120 AQUISITION MODEL:
- How is modeled the radar scan of the missile? Scan rate (angle sec/bars?) If the FRQ of the radar is known based on the size is is an easy calculation to determine the beamwidth. We can assume 10 GHz, almost every ARH uses the FRQ. Is it / will be modeled the scan?
10 GHz is very common for fighter radars, but it may not be for missile radars.
For instance, Meteors and MICAs use Ku-band radars and, interestingly enough, the AV-8B Tactical Volume stated in 2002 : “With the recent availability of suitable millimeter-wave power-generating components, radar designers are developing extremely small, albeit short-range, radars which take advantage of the atmospheric window at 94 GHz to provide radar capabilities in small packages (i.e., air-to-air missiles, AH-64 longbow).”
A bit earlier in the same volume it reads : “As an example, the airborne warning and control system (AWACS) radar operates in the S-band (10 cm). These radio waves are considerably longer than that used by the APG-65 (3 cm), however, AWACS utilizes an antenna which is about 24 feet wide. At the other extreme, an air-to-air missile which operates in the millimeter-wave region (94 GHz) can achieve the same angular resolution with a 3.8 inch antenna as an I-band radar would with a 36-inch antenna.”
So the AMRAAM, or some versions of the AMRAAM, may use a 10 GHz radar, but it’s difficult to conclude without clear evidence.