Because Japan was hit hard by heavy industry in World War II, many large groups with strong technical strength in the past just woke up from being disarmed. In order to ensure the development speed, the development of the first generation weapon system in Japan after the World War II did not adopt a wide bidding system, but gave the main contractor limited commercial autonomy on the basis of planning instructions. Considering that Toshiba showed great strength in the field of electronics industry at that time, the Ground Self-Defense Force directly handed over the ML-SAM project to Toshiba. 1960, the initial scheme design was started, and Toshiba successively came up with eight schemes, from optical guidance to infrared guidance, radio instruction guidance and other ideas were theoretically deduced. Due to the status of a defeated country, the funds available are insufficient. Therefore, although Lu Zi has checked Toshiba's development progress many times, the progress has been slow due to lack of food. However, due to the traction of the ML-SAM project, Toshiba cooperated closely with Waseda University and continued to deepen its theory, which laid a solid foundation for the progress of Japanese radar technology and also exercised the company's own scientific research strength. The electronic components and production technology developed for this project were successfully applied to Toshiba's large-scale civil equipment in advance, from which experience was gained and research was promoted in turn. Therefore, from this perspective, it is not easy for Japan, which was in the re-starting stage at that time, to do all this.

From 1967 to 1968, Toshiba finally determined the final design framework of the system, decided to use phased array radar as search-fire control radar, and used infrared guidance for missiles, and completed the basic prototype. And reached a development and production agreement with Japan Seiko Co., Ltd. and Nissan Motor Company. Subsequently, in 1970, Japan's defense agency took the opportunity to put forward a new "defense guideline" and re-examined a number of projects that were slow due to financial reasons, from which ML-SAM also benefited. 197 1 August, it was officially renamed as Tan Sam System. Subsequently, Toshiba received a sum of money equivalent to three times the previous research and development expenses in the past 10 years. However, this time Toshiba spent a considerable amount of money to transform the factory and update the equipment. At that time, Toshiba was developing CNC machine tools, so it took the opportunity to take a short-distance Sam project car.

197 1 year, the prototype of the system was launched for the first time at Fuji proving ground. In August of the same year, Lu Zi named it short-range Sam system. 1972, Toshiba began to test the launch system and develop the command and control system. One year later, the command and control system was tested, 1976, and the first full prototype system was manufactured. However, due to the slow development of infrared seeker, the technical test of all components of the whole system was not completed until 1977. From 1978, the whole system combat simulation test was carried out for two years.

At the same time of the slow development of short-range Sam, Soviet Air Force pilot belenko defected at 1979. He successfully escaped the interception of the Japan Air Self-Defense Force by driving the MIG -25 reconnaissance plane with poor low-altitude performance, and Lu Zi's air defense network was not grasped in time. Finally, Berenko successfully landed at an important base in northern Japan. This incident gave the Japanese Defense Agency a great shock, and immediately asked Lu Zi and Kong Zi to "thoroughly clean up" the air defense network and report the development of the short-range air defense system. At this time, Britain took the opportunity to advocate the low-altitude net-mending function of the lightsaber missile it is putting into equipment. Due to the special relationship between Britain and the United States in NATO and commercial considerations, the United States also suggested that Japan abandon the development of short-range Sam, buy or introduce the production sword system instead, or buy the Roland system with American participation. There are two kinds of voices: self-research and introduction, which have been seriously influenced by the United States. So from 1979 to 65438+February, the defense agency organized short-range Sam to compete with other missiles for selection. From 1980 to 65438+ 10, two months of competitive bidding ended, and short-range Sam defeated Roland and won the lightsaber. 1in March, 980, Japan's defense agency finally decided to take short-range Sam as its development goal, denying the idea of introducing similar missiles from Europe and America. At this point, short-range surface-to-air missiles have really entered a period of rapid development. 1982, the short-range surface-to-air missile was finalized and named as 8 1 short-range air defense missile. In the middle of the year, the 8 1 model initially had combat capability, and 1983 began mass production. The first batch of 8 1 models were first equipped with the divisions of the Japanese Ground Self-Defense Force: the 7 th Division, which directly confronted the Soviet Union in Hokkaido and was called the "Tiger" Army. Since 1984, 8 1 air defense missiles have been equipped with the first-class troops of the ground self-defense force and the air defense force of the air self-defense force base in our state.