A Chinese HJ-9 anti-tank missile system mounted on a WZ550 4x4 vehicle. On display at the 'Our Troops Towards The Sky' exhibition in Beijing in 2007.
The WZ550 has an integrated weapon station containing an observation/fire-control unit and four tube missile launchers. When the vehicle is in travelling mode, the station can be retracted back to inside the troop compartment. There are 4 ready-to-launch missiles on the weapon station and 8 spare missiles carried inside the vehicle. The fully-stabilised weapon station has an elevation from +10 to -10 degrees with +/-200 degree traverse. The observation/fire-control unit includes day/night sight, TV goniometry, and laser command transmission systems.
The weapon operator controls the missile inside the vehicle via a semi-automatic laser command guidance. The weapon operator searches and locates the target using a periscope optical sight (7km range) in day light, or a thermal imager at night or in bad weather conditions. Once the missile is launched, the operator continues aiming its sight at the target. The TV goniometry measures the angle deviation between the missile and the line of sight. The correction command is sent to the missile via the laser transmission unit (5.5km range). During the flight of the HJ-9 missile, the operator only needs to keep the sight's cross-hair on the target, and the system automatically transmits the laser command signal to the missile until it hits the target.
Picture added on 14 September 2011 at 11:02