Do you know how were frigate's ESSMs modernized with smart mk2? Producer of ESSM Raytheon updated software of systems for us.although They didnt upgraded just for us , there had been several ESSM upgrades for another countries.
http://raytheon.mediaroom.com/2019-...gins-for-Raytheon-Evolved-SeaSparrow-Missiles
ESSM had semi active guidiance for initial and medium stage. AFAIK they shortened semi active guidiance process. Now ESSM guidiance happens substantially active via smart -s radar. They also replaced active guidiance kit, seeker.( Adı her neyse)
Creating a totally New system from scratch would be easier.
I don't think for Aselsan and roketsan adding rocket fuel and reach the maximum range and altitude are the problem, the problem must be creating accurate guidance kits, solid software and penetrative sensors.
Why they didnt modernize SM1s at the same time with ESSM modernization?
AFAIK There was just a VLS modernization of SM1s.
I dont know that raytheon allowed Turkey to connect Sm1s with smart-s radar.
I even dont know if it is possible.
comparing size of s400's 40n6e missiles- which have 400km range or 180km altitude -with sizeo tr300 kasırga artillery rockets there is nothing too much. Differences between an artillery rocket and active guidiance SAMs are like blazes.
As you just admitted , Turkey has several SAM systems in order to bite painfully to some countries. It is the matter of balls.
Edit: s400's 40n6e hits targets at 400km with semi-active guidance ! 40n6e Missiles are guided semi-active at most of their course.
Only 9m96e(100km) and 9m96e2(120km) are long range active guidance missiles.
To be honest, Israelis Barak 8 would be great for now.