CAJ | 학술논문

深空通信具有时延长、误码率大、链路易中断等特点，链路中断将导致数据不可恢复的丢失。针对深空通信误码率大、数据易丢失等特点，对LT（ Luby Transform）码与LDPC／TPC码的级联进行了研究，描述了喷泉码的原理和主要实现方法，给出了LT码与LDPC／TPC码的级联方法及Matlab仿真分析结果，实现了LT 码与 LDPC／TPC 码的级联编解码，并通过设计闪断试验测试了级联码的性能，给出了分析结果，以期为深空通信数据的获得提供更为可靠的解决方案。
심공통신구유시연장、오마솔대、련로역중단등특점，련로중단장도치수거불가회복적주실。침대심공통신오마솔대、수거역주실등특점，대LT（ Luby Transform）마여LDPC／TPC마적급련진행료연구，묘술료분천마적원리화주요실현방법，급출료LT마여LDPC／TPC마적급련방법급Matlab방진분석결과，실현료LT 마여 LDPC／TPC 마적급련편해마，병통과설계섬단시험측시료급련마적성능，급출료분석결과，이기위심공통신수거적획득제공경위가고적해결방안。
Considering the issues such as long delay,high code error rate and easily broken links in deep space communications, the concatenation of LT code and LDPC/TPC code is studied and implemented,the principle of LT code and the main implementation method are introduced.The method of LT code concatenating with LDPC/TPC code and the Matlab simulation results are given,which is expected to provide more reliable solution for the acquisition of deep space communications data.