| 摘要: |
| 相控阵同时多波束对多目标的高精度连续闭环角跟踪，是相控阵技术中的一个新的重要领域。针对此，提出用递归累加进行相位控制并构成一个积分环节，以此为基础构建成基本的一阶角跟踪环路，在环路中可再增加积分环节的个数构建成高阶的自动控制系统，从而实现高精度的连续角跟踪。给出了系统框图，推导出了常用的二阶环的闭环传递函数表达式，它与锁相环的闭环传递函数类似，可以应用锁相环技术的很多有关成果。还介绍了投影面转动法、空窗滑动法等相控阵角跟踪方法，尽管它们的跟踪方案不同但都具有相同的闭环传递函数模型。 |
| 关键词: 相控阵测控 连续角跟踪 递归累加环 闭环传递函数 投影面转动法 空窗滑动法 |
| DOI：10.20079/j.issn.1001-893x.220620001 |
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| 基金项目: |
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| Phased array TT&C technology—part1: introduction to phased array angular tracking |
| LIU Jiaxing |
| (Southwest China Institute of Electronic Technology,Chengdu 610036,China) |
| Abstract: |
| Using multiple beams simultaneously for highly precise continuous angle tracking of multiple targets is a new and important research area for phased array.In view of this,a method is proposed that uses recursive accumulation to control phase and create an integral part,based on which a basic first-order angle tracking loop is constructed.In the loop,the number of integral parts can be increased to constitute a high-order automatic adjustment system to achieve high precise continuous angle tracking.The block diagram of the system is given,and the commonly used expression of the closed-loop transfer function of the second order loop is deduced.The results show that the closed-loop transfer function of the second order loop is similar to that of the phase-locked loop,and many related achievements of the phase-locked loop technology can be applied.In addition,the angle tracking methods such as projection plane rotation method and space-domain window sliding method are also introduced.Although their tracking schemes are different,they both have the same closed-loop transfer function model. |
| Key words: phased array TT&C;continuous angle tracking recursive accumulation loop closed-loop transfer function projection plane rotation method empty window sliding method |
