For most AFs, it will be a phased transition from manned to unmanned aew platforms. The IAF is no exception.
Photonics or any other next-gen tech would need to be sufficiently proven for unmanned application (airframe performance, ew/emi, autonomous navigation, etc).
We don't yet have a strategic UAV prog similar to the RQ-4 or Chinese WZ-7/WZ-9. The Grob 180 (rights now acquired by the Tatas) could be a possible near-term option (optionally manned derivative?) but payload limitations may be a factor.
Frankly I don't have any high hopes of the IAF. Next to the Navy the AF of any Armed Forces of a nation is the most technical & technologically driven force. Yet how has the IAF gone about their job ?
The other day on Twitter there was a huge debate on how even pilots of the USAF in the technical branches of USAF have PhDs leave aside Masters in Engg but we've no clue on where does the IAF stand on the matter ?
For those interested , go thru the entire thread. It's very informative & should tell us where does the IAF stand in this regard ?
Even the IN the smallest & most neglected of the 3 forces adapted early going in for incremental improvements , indigenization , building up a technical cadre way back in the 1960s which is how they evolved the Warship Design Bureau , WESEE etc by catching them young , enlisting students as technical cadres , sponsoring their education in premier institutions like the IIT etc.
Apart from the IACCS in recent times what exactly has been the achievements of the IAF as far as modernization & upgradation of the IAF goes ? The Super Sukhoi upgradation program is delayed by a decade & by the looks of it will take another decade , likely more to give the IAF a mere 84 Super Sukhoi configuration FAs.
Let's not get into the other aspects of their upgradation cum modernisation / developmental programs viz the Kaveri TF program , the HTSE / HTFE program Refuellers , AEW / AWACS , Drone & Counter Drone strategy etc.
The less said about their involvement in the matter especially the LCA program till MP read out the riot act & laid down the ground rules for their induction , the better.
Ideally the IAF ought to be focusing on system of system MUMT to solve this problem by investing their resources on photonics , UCAVs , HALE / MALE drones etc .
Space-based EO+SAR sats from Galaxeye, Pixxel et all are another viable alternative. But there is no indication currently that they will feature AMTI capability, wide FoV required for the job.
You need to have a program to develop these technologies . We don't. All we get is wordcelling in the form of a strategic policy or a vision document of the IAF which they ritually release after regular intervals.
For the IAF, the priority right now is integrating SDR/DLs on the Netra/Phalcon for enabling third-party designation/guidance to in-flight BVRAAMs.
Once again these were low hanging fruits which should've been implemented years ago yet took a Balakote to bring home the problems.
We stopped the Netra program with a mere 3 ACs instead of incrementally adding to it over a period of time .
This is another area where we are lagging and where manned awacs will remain indispensable for the foreseeable future.
Yes by the looks of it this is exactly where the IAF is headed. We'd keep operating those manned AWACS right into the 2050s when if Paxtan is around they'd make a complete transition to SBS first before the IAF wakes up.