China has revealed that it has upgraded 200 Russian Kh-31P ARM (anti-radiation missiles) it imported in the 1980s. The Chinese were dissatisfied with the Russian seekers (that detected and homed in on radar transmissions), and developed one of their own. The Chinese seeker detects more radar frequencies (2-18 Ghz) and will hit within 8-10 meters of the radar transmission. The Kh-31 was originally developed as an anti-ship missile. The Russians quickly realized that, with a different seeker, the missile would also work well as an anti-radiation weapon. The anti-ship version has a range of 50 kilometers, while the ARM version...
