一种数字式高精度测速应答机设计  

Design of a Digital High Precision Velocity Measuring Transponder

作　　者：李增有 刘嗣勤 LI Zengyou;LIU Siqin(Unit 91550 of PLA,Dalian 116023,China)

机构地区：[1]解放军91550部队,辽宁大连116023

出　　处：《电讯技术》2020年第4期393-397,共5页Telecommunication Engineering

摘　　要：针对航天测控对应答机高精度、小型化、高可靠性的需求,采用基于大容量现场可编程门阵列平台的全数字模式,并结合直接数字频率合成器、相参转发技术,设计并研制了三通道全相参转发体制的应答机。测试结果表明,较传统应答机,该应答机结构尺寸压缩了40%以上,测速精度提升了2倍左右,达到了mm/s级。该研究成果已应用于后续型号高精度测控系统建设中,具有良好的推广应用价值。In order to meet the requirement of high precision,miniaturization and high reliability of space telemetry,tracking and command(TT&C) transponder,a three-channel full-coherent transponder is designed and developed based on the full digital mode of large-capacity field programmable gate array(FPGA) platform,as well as direct digital synthesizer(DDS) and coherent retransmitting technology. Test results show that compared with that of the traditional transponder,the structure size of the designed transponder is compressed by more than 40%,the test accuracy is improved by about two times which reaches mm/s level. The transponder has been applied in the construction of follow-up high precision TT&C system,and has good application value for spreading.

关 键 词：测控系统 数字应答机 测速 相参转发 直接数字频率合成器 

分 类 号：TN802[电子电信—信息与通信工程] V443[航空宇航科学与技术—飞行器设计]