轴角编码单元在CINRAD/SA雷达中的应用

Application of the encoder unit in the CINRAD/SA radar

介绍了我国新一代天气雷达CINRAD/SA天线伺服系统轴角编码单元的主要功能以及逻辑电路结构,分析了旋变激磁信号发生器、旋转变压器、RDC模数变换模块、PLD可编程逻辑器等关键部件的具体功能。进一步深入剖析了轴角编码单元如何利用粗、精码合成与纠错程序控制策略实现雷达天线的高精度控制。最后,总结分析了其在新一代天气雷达工程中的实际应用效果,证明轴角编码单元的工作性能充分达到了预期的技术指标。旨在为各级气象雷达技术保障人员提供CINRAD/SA雷达伺服系统维护和研究方面的参考。

This thsis described the function and the logic circuit structure of the CINRAD/SA encoder unit,and analyzed the concrete function of resolve excitation signal generator,rotary transformers,the Resolve to the Digit Converter and the Programmable Logic Devices.Then it was analyzed deeply that how the encoder unit used the the synthesis and correction program control strategy of coarse codes and fine codes to achieve high precision radar antenna control.Finally,this paper analyzed the practical application of the encoder unit in the CINRAD/SA project which can prove that the performance target was achieved.References about maintenance and research of CINRAD/SA servo system can be provided to weather radar technology support staffs at all levels.