Chinese radars are probably behind their western equivalents, I fully agree. But India does not have a system, not yet at least. PARS on 052C have been in service since 2004, up to 5 KJ-2000 and up to a dozen KJ-200 are also in service. Right now putting China and India in the same sentence is absurd. Even when India manages to develop her so-called indigenous AEW radar (it will take 3-5 years at least, that is kind optimistic), it will stilol be full of imported components.
We actually had a mechanical rotodome based radar in 1995. Flight tests happened the same time as China's KJ-2000. In 1999 one of the two prototypes crashed and the program had to be stopped temporarily. We had also been trying to make AESA based radars since.
This photo's from 1996.
LRDE, the DRDO department which works on radars is quite successful in radar development. You may have heard of the Israeli Greenpine radar, it is superior to the Phalcon radar. We had quite a few delivered from Israel in early 2000 and have made our own versions since. One of them is called Swordfish. Swordfish has been in operation well before 2004. We are working on larger and more powerful designs as well primarily for our ballistic missile defence program. If you did not know, the Patriot system was denied by India not because we have our own program, but because the Patriot system was deemed inferior to the Indian system.
Nothing on the DRDO AEW&C sensors is imported except for a L band transmitter bought from Israel. It's all homemade.
Indian still refuses to recognize that while China is overtaking US as world's largest manufaturer, India is very much i its infacy as far as industrialization is concerned. India simply does not have the whole range of industries to design, test then manufacture complete systems from end to end.
India recognizes China's industrial prowess. But it has very less to do with the military industrial complex which requires high precision. Things that cannot be built in house can be bought. You can buy from Russia while we can do so from Europe, Israel and now the US.
We do have military industrial capability to design, test and manufacture complete systems from end to end. We build, test and induct ships, aircraft and other systems while being 3-4 times smaller than China in terms of economic GDP. Our space industry is our own as well.
This is something that is present in our civilian industry as well. Just that the scale of our civilian industry is smaller than the one in China. The military, not as much as you think it is.