据美国《野战炮兵》杂志1979年7—8月介绍,美国休斯飞机公司研制的昼夜两用瞄准具,供陆军新式战车系统(FVS)使用,它能透过黑夜、烟或霾进行观察。在白天或黑夜从战车系统上发射陶式反坦克导弹,炮长用它击中2000米以外的固定或活动目标。导弹研究发展司余部拨给休斯飞机公司2千5百万美元,作为地面激光定位指示器的工程服务和生产费用。地面激光定位指示器 According to the U.S. “Field Artillery” magazine introduced in July-August 1979, the U.S.-based Hughes Aircraft Company developed a day and night sight for use by the Army’s new tank system (FVS), which can be observed through the night, smoke or haze . Launching a Tug-of-Tank anti-tank missile from the tank system during daytime or night, the gunner used it to hit a fixed or moving target 2,000 meters away. The remainder of the Missile Research and Development Division allocated $ 25 million to Hughes Aircraft Corporation as engineering services and production costs for a ground-based laser position indicator. Ground laser positioning indicator