| 摘要: |
| 区别于基于抛物面天线的单目标高精度测量系统，相控阵天线测速系统需要解决多目标同时高精度测速难题，尤其对于毫米/秒级测速精度的应用需求，工程实现中只考虑个别影响要素，将无法达成系统建设目标。针对多目标、毫米/秒级测速精度应用需求，基于天地一体化全链路设计思想，将影响系统测速精度的关键环节分解为测量体制、收发链路、相控阵天线角跟踪耦合、基准频率短期稳定度等，简要分析了各构成要素的影响，完成了收发共本振、大间距非周期环栅阵面等的优化设计。开展了基于试验样机的测试验证，结果表明经过一体化设计的相控阵测速系统测速精度优于0.1 cm/s，满足工程应用需求。 |
| 关键词: 相控阵测速 天地一体化设计 数字波束合成 耦合效应 |
| DOI：10.20079/j.issn.1001-893x.240329002 |
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| 基金项目: |
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| Integrated Design of Group Elements in Phased Array High-precision Velocity Measurement System |
| LIU Siqin,LI Zengyou,SUN Chao |
| (Unit 91550 of PLA,Dalian 116023,China) |
| Abstract: |
| Different from the single target high-precision measurement system based on parabolic antenna,the phased array antenna velocity measurement system needs to solve the problem of multi-target simultaneous high-precision velocity measurement.Especially for the application demand of millimeter/second level velocity measurement accuracy,only considering individual influence factors in engineering implementation will not achieve the goal of system construction.According to the multi-target and millimeter/second level velocity measurement accuracy application demand,based on the design idea of space-ground integrated full link,the key links that affect the system velocity measurement accuracy are decomposed into measurement system,transceiver link,phased array antenna angle tracking coupling,short-term stability of reference frequency,etc.,the influence of each component is briefly analyzed,and the optimized design of common local oscillator of transceiver,large spacing aperiodic ring grid array,etc.is completed.Test verification based on the experimental prototype is carried out.The results show that the velocity measurement accuracy of the phased array velocity measurement system with integrated design is better than 0.1 cm/s,which satisfies the engineering application. |
| Key words: phased array velocity measurement space-ground integrated design digital beam forming coupling effect |
