微重力平台可靠通信的纠错码
Error-Correcting Codes for Reliable Communications in Microgravity Platforms
AI总结：
针对火箭发射微重力平台通信中再入段数据丢失问题，提出数字喷泉码与里德-所罗门块码结合的纠错方案，基于Cumã II遥测数据建模信道并仿真，结果表明可恢复几乎所有遥测数据。
摘要：
PAANDA实验旨在表征火箭发射的微重力平台的加速度环境，特别是微重力阶段。记录的数据被传输到地面站，导致再入期间发送的遥测信息丢失。传统上，该信道的纠错码由块长非常大的分组码组成，以保护免受长时间数据丢失的影响。相反，我们提出使用数字喷泉码以及传统的里德-所罗门分组码，分别保护免受长和短突发错误周期的影响。为了在PAANDA的第二版中使用这种方法以防止数据损坏，我们基于从Cumã II遥测数据中提取的信息提出了通信信道模型，并在此信道模型下仿真了我们提出的纠错码的性能。仿真结果表明，几乎所有的遥测数据都可以恢复，包括再入期间的数据。
英文摘要：
The PAANDA experiment was conceived to characterize the acceleration ambient of a rocket launched microgravity platform, specially the microgravity phase. The recorded data was transmitted to ground stations, leading to loss of telemetry information sent during the reentry period. Traditionally, an error-correcting code for this channel consists of a block code with very large block size to protect against long periods of data loss. Instead, we propose the use of digital fountain codes along with conventional Reed-Solomon block codes to protect against long and short burst error periods, respectively. Aiming to use this approach for a second version of PAANDA to prevent data corruption, we propose a model for the communication channel based on information extracted from Cumã II's telemetry data, and simulate the performance of our proposed error-correcting code under this channel model. Simulation results show that nearly all telemetry data can be recovered, including data from the reentry period.
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