But technically it is not dual guidance... dual guidance would be a combined IR and Radar seeker.
This is merely a guidance system that combines two radar bands.
We know it is an active radar seeker, and we know it has a home on jam function.
Personally I think it is an active radar homer in Ku band, but with an antenna that can detect signals in two bands... Ku and X, that would make it an active Ku band missile with ARM capacity against X band jammers.
On this website:
They lump X and Ku band radars together:
I/J- Band (X- and Ku- Band Radars)
In this frequency-band (8 to 12 GHz) the relationship between used wave length and size of the antenna is considerably better than in lower frequency-bands. The I/J- Band is a relatively popular radar band for military applications like airborne radars for performing the roles of interceptor, fighter, and attack of enemy fighters and of ground targets. A very small antenna size provides a good performance. Missile guidance systems at I/J- band are of a convenient size and are, therefore, of interest for applications where mobility and light weight are important and very long range is not a major requirement.
This frequency band is wide used for maritime civil and military navigation radars. Very small and cheap antennas with a high rotation speed are adequate for a fair maximum range and a good accuracy. Slotted waveguide and small patch antennas are used as radar antenna, under a protective radome mostly.
This frequency band is also popular for spaceborne or airborne imaging radars based on Synthetic Aperture Radar (SAR) both for military electronic intelligence and civil geographic mapping. A special Inverse Synthetic Aperture Radar (ISAR) is in use as a maritime airborne instrument of pollution control.
Hmmm, very small and cheap antennas with fair range and good accuracy... might be useful in an ARH missile?
BTW I know Wiki isn't the best source, but
CATIC is known to be developing X-band and Ku-band active radar seekers, which may be intended for the PL-12. However the latest reports confirm that China has been co-operating closely with Russia's AGAT Research Institute, based in Moscow, and that AGAT is the source of the PL-12's essential active seeker. This joint development effort (perhaps with the name 'Project 129') has reportedly seen the supply of AGAT's 9B-1348 active-radar seeker (developed for the Vympel R-77, AA-12 'Adder') to China for integration with the Chinese-developed missile. Alternatively, technology from AGAT's 9B-1103M seeker family may be offered to China. Russia is also the source for the missile's inertial navigation system and datalink.
Finally, the PL-12 has a 'home-on-jam' mode that allows it to passively track and engage an emitting target, without ever using its own active radar or a radar from the launch aircraft. This capability is the foundation on which the capability of anti-radiation missile is developed. The seeker is connected to a digital flight control system that uses signal processing techniques to track a target.
It has R-77s seeker and a HOJ capability...
Also, while looking I found this:
The Agat Moscow Research Institute is developing an upgrade of its active seeker for medium range air-to-air missiles. At the same time Russian radar house Phazotron is preparing to test new long range phased array radars.
Agat's 9B-1103M active radar seeker will have a 25km (13.5nm) acquisition range against 5m² (54ft²) radar cross section - or fighter-sized - targets.
Iosiph Akopyan, Agat general designer and director, says the use of fibre-optic rotation sensors (FORS)in place of inertial gyros will give the seeker an almost instantaneous readiness capability. Akopyan says Agat is developing the seeker as a private venture and that it can be installed on any air-to-air missile with a 200mm (7.8in) diameter body including the Vympel R-77 (AA-12 Adder/RVV-AE). Laboratory testing continues on components and a seeker prototype will be ready for integration by mid-2000.
Akopyan says a family of active seekers for air-to-air and surface-to-air missiles can be developed using FORS. He says 200mm, 330mm and 450-500mm diameter seekers could cover the range of missile requirements. FORS sensors are produced by Moscow-based Fizoptika and cost about $2,000 each, Agat says equivalent performance laser gyros cost $25,000.
The upgraded 9B-1103M also uses a new digital processor for signal and data processing. At 10kg (22lb), the seeker is 6kg lighter than the R-77's 9B-1348E which has a 16km acquisition range. Akopyan says that Agat is looking for international partners to develop the seeker.
Note all the missiles in your picture were 9B-1103Ms with different body diameters, so likely all have digital signal processors. That tells me the RVV-AE for export model is probably the same as the seeker sold to China for their PL-12 missile.
More info here too:
But how about this:
Scroll down to near the bottom where there is a title: Phazotron 1L36E/1RS2 / VNIIRT 1RS2-1 / 96K6 Pantsir S1 / SA-22.
Below that title is a large photo of a Pantsir-S1, and then a lot of text, and then a RCS to radar range chart and then a large photo of the early round parabolic yellow tracking radar on the old model Pantsir.
Beneath it it says:
The 1L36-01 Roman was the first engagement radar used on the Pantsir S demonstrators. The characteristic conical radome shape conceals a parabolic reflector antenna with a quad waveguide feed for dual plane monpulse angle tracking, with X-band and Ku-band channels. Note the smaller upper missile command link antenna. The radar has been labelled as a 96L6-1, but more commonly as the 1L36-01 (© 2007, Yevgeniy Yerokhin, Missiles.ru).
Scroll down further and each iteration of the system has a similar dual antenna arrangement with a large antenna to track the target and a smaller antenna to track the outgoing missile.
The last photo of the newest tracking radar antenna says:
Detail of new Pantsir S1 1RS2-1 / 1RS2-1E PESA engagement radar, which is claimed to operate in the Ku-band. The small upper antenna belongs to the APKNR (Apparatura Peredachi Komand i Naprovadzaniya Raket) subsystem for datalink control of the missiles. The design has been credited to VNIIRT (KBP).
The radar antennas (large one and small one on each radar mount) look about the same size, yet the first ones operate in the X and Ku bands and the new one operates in the Ku band.
Please don't suggest that means the little antenna operates in Ku and the big antenna operates in the X band as the current system doesn't operate in the X band.
BTW another name for the X band and the various Ku and K and Ka bands is Cm wave and mmw radar bands... to be used by the Mi-28N and Ka-52... for air and surface scanning for targets.