CAJ | 학술논문

基于Xilinx XC2V3000芯片设计了一种应用于星载多通道快速激光三维成像雷达中的抗辐照增强型时间-数字转换(Time-to-Digital Converter, TDC)系统。单板2片FPGA内实现了16通道高精度时间间隔测量。采用了多延时链冗余结构，每个测时通道由3个物理测时链路组成，最后通过三模冗余增强抗单粒子翻转能力。并应用了通道均匀性校准修正技术，解决了多通道测时均匀性问题。实验结果表明，系统测时精度达到62.9 ps，通道一致性较好，满足激光雷达三维成像要求，同时该技术方案具有低功耗、轻量化等特点。
기우Xilinx XC2V3000심편설계료일충응용우성재다통도쾌속격광삼유성상뢰체중적항복조증강형시간-수자전환(Time-to-Digital Converter, TDC)계통。단판2편FPGA내실현료16통도고정도시간간격측량。채용료다연시련용여결구，매개측시통도유3개물리측시련로조성，최후통과삼모용여증강항단입자번전능력。병응용료통도균균성교준수정기술，해결료다통도측시균균성문제。실험결과표명，계통측시정도체도62.9 ps，통도일치성교호，만족격광뢰체삼유성상요구，동시해기술방안구유저공모、경양화등특점。
Based on Xilinx XC2V3000 chip, a multi-channel irradiation resistance enhanced (Time-to-Digital Converter, TDC) system was designed. 16-channel high-precision time measurement was achieved within 2 FPGAs in a single board. With multi-redundant delay-chain structure, each measuring channel consisting of three physical timing links, and the anti-SEU ability was enhanced by triple modular redundancy. The channel uniformity calibration correction technology was applied to solve the multi-channel uniformity issues. Experimental results prove that the system meets the requirements of a 3D imaging laser radar, with an accuracy of 62.9 ps and a good uniformity. Meanwhile, the technical solution provides has a character of low power consumption, light weight etc.