@Brumby
IRST and EOTS are widely credited with being able to detect the IR emissions from fighter sized aircraft. After all, they all use jet engines to burn fuel, and the end result is the same amount of heat that has to go somewhere.
Examples include the Eurofighter PIRATE and the Chinese arms shows where these sorts of sensors are available for export, and where the detection specifications are published. So EOTS doesn't seem to be particularly special these days.
Plus you're disparaging Chinese data buses and signal processing for a Su-27 pod solution?
That is a very stupid comment because we're in the computing age where a smartphone attached to a EOTS pod has vastly more signal processing power than the EOTS systems from 5 years ago. In the civilian realm, we can see that Huawei/Baidu have better commercially deployed speech/image/signal processing systems than their US counterparts.
In this field, it's all about deploying commercial technology as fast as possible for military use. Note that China runs at China speed and prefers to leverage off commercial technology for its military projects, whereas the US military is noted for being slow, bureaucratic and preferring custom solutions.