Re: S-300PMU/HQ-9 guidance system..
HQ-9 cannot use SSGG guidance, Richard. There is no associated illuminator. 052C's main radar is S-band, which rules that system out for terminal guidance.
according to the latest issue of defense international,when S-300 first seen by US spy satelite,,it was assume that her guidance missile like patriot SAM uses TVM guidance system,stolen from raytheon.
it was not until the in the mid -90's that west learn that S-300PMU utilized SSGG guidance system.
SSGG guidance is very similiar to the TVM guidance,while patriot signal processing was process in the groun then up link to the missile,SSGG guidance signal processing was done inside the missile then down link back to the ground station for further analysis then up link back to the missile.
it is assume that HQ-9 also adapt SSGG guidancemwhile KS-1 may use TVM guidance.
HQ-9 cannot use SSGG guidance, Richard. There is no associated illuminator. 052C's main radar is S-band, which rules that system out for terminal guidance.