Type 90 Tank - Electronics
The fire control system is equipped with a digital FCS jointly developed by Mitsubishi, Fujitsu, and NEC, and includes laser rangefinder, muzzle collation device, strap-down turret inclinometer, charge temperature sensor, and crosswind sensor information. and boasts extremely high accuracy.
While the 74-type tank was equipped with an active infrared night vision device, the 90-type tank was equipped with a passive thermal imaging device (thermal imager), and like the 74 type, the other party was an infrared night vision device. If you are equipped with the , you will not know the existence of this place. The target captured by the thermal imager is processed by the FCS from the surrounding contrast difference, and the captured target can be automatically tracked . After lock-on, it continues to track even moving targets, and the target is temporarily hidden behind obstacles. Even if the gun barrel is aimed at the calculated future position of the target.
This automatic tracking function was put to practical use ahead of the rest of the world, and has extremely high accuracy even when shooting while marching. At the time of initial adoption, during a shooting test at the Yakima Training Area in the United States, the first hit was given to a target 3 km away during the march, surprising the US military personnel. By the way, the Merkava Mk3B, which appeared in 1995, is the first tank other than the 90-type tank to be equipped with an FCS that has an automatic tracking function.
On the right side of the top of the turret is a gunner's sight consisting of a gunner's aiming periscope, a laser rangefinder, and a thermal imager. The box-shaped sight has two windows, with an optical viewing system and laser rangefinder on the left, and a thermal imager on the right. The gunner's sighting periscope is a monocular optical sight with a sighting system and a sighting system. . The viewing system window is located above the sighting system and has a magnification of 1x (horizontal 18°). To the right of the mantlet is a 12x gunner's direct sight, used as an auxiliary sight. The laser rangefinder uses a YAG laser, and can measure distances from 300 to 5,000m with an accuracy of ±10m.
There is a 7-inch black and white CRT display in the gunner's seat and the vehicle commander's seat, and the image of the heat ray image device is displayed here. The thermal imager can be switched in 3 stages: wide (7.6° x 10.1°), narrow (2.7° x 3.6°), and wide (1.3° x 1.8°).
Equipped with a periscope for the vehicle commander on the top left of the turret. This sight is a pseudo-binocular panorama type, and the magnification is switchable between 3x (21°) and 10x (6.5°). It's becoming This sight can be used for searching and aiming, can override the gunner's target, and can be fired from the commander's seat.
The independent movable sight for the commander is equipment that was not found in the Type 74 tank, allowing the commander to search for the next target even while the gunner is aiming at the target . Operation is possible, and if a new target with a high threat level is discovered, the commander can directly fire it. It does not have a night vision function, and at night and in bad weather, the heat ray imaging device at the gunner's site is used, so hunter killer operations cannot be performed at night and in bad weather. Also, in this generation of tanks, the all-around swivel sight was becoming the mainstream for the commander, but the panorama sight of this tank is a limited swivel type, so the observation range is 180 degrees forward, which is slightly inferior.
The Commander's Cupola behind the Commander's Sight is equipped with eight 1x periscopes that provide a full view of the surrounding area. There are three periscopes in the cockpit, and the central one can be equipped with night vision goggles for operation, and a wiper that was not found in the Type 74 tank was also installed.
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