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I think you are exactly correct that the guidance system is modelled on the Aegis / Standard SM-2. Don't forget Standard was also a Convair (General Dynamics) Pomona product.Combining rear and front antennas makes sense for various reasons. The front seeker can use monopulse to measure accurate single-pulse range and direction for starters. SARH "fixes" will be more accurate than INS + updates from a distant host aircraft. The host aircraft is moving, the target is moving, the missile is moving... some hard maths involved. SARH signal is much simpler and accurate - target is this way, moving in this direction.
I think you are exactly correct that the guidance system is modelled on the Aegis / Standard SM-2. Don't forget Standard was also a Convair (General Dynamics) Pomona product.
Combining rear and front antennas makes sense for various reasons. The front seeker can use monopulse to measure accurate single-pulse range and direction for starters. SARH "fixes" will be more accurate than INS + updates from a distant host aircraft. The host aircraft is moving, the target is moving, the missile is moving... some hard maths involved. SARH signal is much simpler and accurate - target is this way, moving in this direction.
