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Dnestr radar ((ロシア語:Днестр)) and Dnepr radar ((ロシア語:Днепр)), both known by the NATO reporting name Hen House are the first generation of Soviet space surveillance and early warning radars. Six radars of this type were built around the periphery of the Soviet Union starting in the 1960s to provide ballistic missile warnings for attacks from different directions. They were the primary Soviet early warning radars for much of the later Cold War. In common with other Soviet and Russian early warning radars they are named after rivers, the Dnestr and the Dnepr. The Dnestr/Dnepr radars were intended to be replaced by the newer Daryal radars starting in the 1990s. Only two of the planned Daryal radars became operational, due to issues such as the dissolution of the Soviet Union. As of 2012, the Russian early warning network still consists of some radars of this vintage. It is likely that all the existing radars will be replaced by the third generation Voronezh radars by 2020. ==TsSO-P== The Dnestr radar came from work on ballistic missile defence undertaken in the late 1950s and early 1960s. System A, the prototype for the A-35 anti-ballistic missile system, was set up in the Sary Shagan testing grounds, in the Kazakh SSR. Work on the system was led by design bureau KB-1 which proposed using VHF radar RTN () and the Dunay-2 UHF radar. Other alternatives were sought from Soviet industry and RTI proposed using VHF radar TsSO-P () and UHF radar TsSS-30 ().〔 TsSO-P (standing for meaning ''central detection station – test site'') was selected for further development, together with the Dunay-2.〔 TsSO-P had a long horn antenna long and high. It had an array with an open ribbed structure and used 200 microseconds pulses. Hardware methods were designed for signal processing as the intended M-4 computer could not run. It was built at area 8 in Sary Shagan and was located at . It first detected an object on 17 September 1961.〔 TsSO-P took part in the 1961 and 1962 Soviet Project K nuclear tests tests above the Sary Shagan range to examine the effects of high altitude nuclear explosions on missile defence hardware.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「dnestr radar」の詳細全文を読む スポンサード リンク
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