The following is based on a translation from a report in Chinese media:
China first imported such radar from the the UK, which had a range of 20 km and were able to detect the location and calibre of more than 20 enemy cannons simultaneously.
Later, China imported the technology so they develop its own version of the radar.
The report says that China imported 4 ANTPQ-37 radar units from the US in 1987.
The SLC-2 surpasses the US ANTPQ-37 in all its functions and has a range exceeding 50 km.
In addition it is equipped with an optical infrared system and sound measuring systems that enable Chinese troops to discover an enemy’s stealth attack.
Source: war.163.com “How China’s anti-artillery radar identifies enemy cannon’s location in 8 seconds” (summary by Chan Kai Yee based on the report in Chinese)
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