The SJ-231 is an alternate radar for the KS-1A/HQ-12 SAM system, based on the HT-233 PESA antenna and cabin design. Cited performance is virtually identical to the H-200. Unlike the towed H-200, the SJ-231 is self propelled, but unlike the HT-233 it is split across a pair of 6 x 6 or 8 x 8 vehicles.
| Specifications (CASIC): | ||
| Operating band: | C (G/X) band | |
| Radar cross section: | 2m2 | |
| Maximum detection range: | ≥120km | |
| Minimum detection range: | 3km | |
| Operational performance: | Altitude: | 0.05~27km |
| Slant range: | 5~70km (120 km) | |
| Maximum operational airspace: | Azimuth: | 0~360º (mechanical rotation range) |
| -30º~+30º (electrical scanning range) | ||
| Elevation: | -1º~+70º (electrical scanning range) | |
| Target capability: | Guide 4~8 missiles to intercept 4 targets at the same time | |
"The SJ-231 guidance station is an important constituent part and the operational command and control center of the KS-1A weapon system. It is used to detect and track the aerial target and control and guide the missile. The SJ-231 guidance station is an advanced guidance radar system and is developed according to the modern war characteristics and the modern air-defense combat requirements. During the development of the guidance station, many advanced techniques in the radar technique development since 1990s are applied to improve the technical performance of the SJ-231 guidance station to a new level." | ||
The antenna on this radar is common to a HT-233, but the configuration is split across two 6 x 6 trucks.