Even if Kornet-EM is employed to engage air targets like helicopters chances are it will miss because platforms like helos apart from carrying several countermeasures are far more maneuverable than platforms like tanks or IFVs.
Kornet uses an auto tracker and would be very hard to evade even in a helicopter... it is a rather fast missile and the 10km range model is designed for both ground and air targets.
There are no known countermeasures to stop laser beam riding missiles... except detect the launch early and fly behind a tree or hill or building... which would not be easy.
The R-73s are interesting... very potent missiles but ground launch would reduce their range. The last time I saw a ground launched model it had a solid rocket booster attached to restore flight performance but against a lot of targets that probably would not be needed.
It has a good sized warhead designed to shoot down large aircraft so it would be a much more effective anti aircraft missile than a MANPADS in many situations.
India already chose Biho instead of Pantsir and Sosna.
The claimed reason for choosing Biho over Pantsir was that the former uses MANPADS with fire and forget missiles using IR seekers. I rather suspect the range was much shorter than the Pantsir but that didn't seem to matter.
Most current gen helicopter pilots practice low level approach, and use the popup maneuver for launching their air to ground missile, which have a roughly 3–4 miles range. Current gen helicopters has a tactical advantage of surprise as it can often evade radar by staying in the ground clutter until within weapon release range. This requires a Kornet EM ATGM operator to remain on alert and to have NVG working, and to anticipate the vector of approach, and then to get tone within 10 seconds.
Where possible helicopter pilots have always tried to operate in such a way but it does make them horribly vulnerable to small arms fire.
Most attack helos have armoured front windscreens, but aircraft like the Apache with its huge side windows are not armoured at all and even assault rifle calibre rounds can penetrate like the 7.62 x 39mm AK round.
Radar is almost never the problem for low flying helicopters because even with IR suppression systems they have 3,000+ HP GT engines that glow and their main rotor blades normally glow with heated leading edges just because of friction.
A Kornet operator would hear a helicopter from enormous distances, and the guidance system uses state of the art 3rd gen thermal imagers that can detect and track helicopter targets at rather more than 10km range. There is no tone, it is not IR guided and the lock is achieved in the aiming system by locking the target with an autotracker... like the target framing on a digital camera in face detection mode... it is almost instant, so you could immediately launch on such a target.
Smart mission management systems, which make use of digital terrain elevation maps and radio modems to link to battlefield intelligence databases and ISR sensors allows helicopter pilots to mark on the digital map, in colour, areas where the helicopter is within the line of sight of any specified point on the map. An operator can thus mark the known location of a ATGM/MANPADS team or machine gun nest and then use terrain masking to avoid detection and weapons fire.
Kornets are man portable and are also mounted on armoured vehicles and Tigr light vehicles... it has no radar to give away its position so the first indication of its presence could be the impact of the missile.
No India didn't. K 30 Biho was simply tested along with Pantsir. India never purchased the K-30 Biho
So all the bollocks about the Biho being superior to the Pantsir was South Korean propaganda....
I seem to remember the claims were fire and forget missiles and reduced vehicle weight over tunguska and pantsir... which is understandable... if you use a smaller lighter less capable gun and smaller lighter less capable and fewer missiles of course the system is going to be lighter...