The construction of an SLBM test site with underwater communication and observation facilities and land-based missile tracking and telemetry facilities was finished in the early 1980s.
建立一个SLBM试验基地，水下通信和观察设备，陆基导弹跟踪和遥感勘测设备在1980年早期完成。
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The first successful land test of the missile took place in 1981, and first successful underwater launch of the missile from a Golf class submarine took place in October 1982.
The paper keens on missile azimuth aiming system, in particular, the measurement method of the precision on aiming system of the underwater to surface missile on the sea.