Well, LORO is rather different from monopulse. We could probably figure this out from the picture of the Head Light feed horn (for full monopulse, there must be 4 sections). From vertically and horizontally aligned wire strips, I can only tell two Head Light tracking antennas use different polarization (rotated by 90 degrees). But I cannot decide if this is a pure Volkhov-like LORO system with one antenna working in azimuth, another in elevation, or two dedicated monopulse antennas, working on different frequencies and different polarizations as ECCM feature.