再入飞行器低误码率数字化遥测系统设计

Design of Low Error Rate Digital Telemetry System for Reentry Vehicle

摘要:

针对再入飞行器遥测领域要求存储系统容量大、误码率低、恶劣环境下可靠回收等特点，以及传统供配电方式存在的地面设备组成多、操作复杂、可靠性低等不足，提出了一种适用于再入飞行器的低误码率数字化遥测系统设计方法。系统采用大容量冗余备份存储设计、基于ECC纠错编码算法的低误码率设计、抗高冲击回收防护设计等关键技术，存储容量提高到32GB，可连续存储9h数据，存储器误码率降低至10-10，实现了高冲击条件下的可靠回收；采用基于1553B总线的数字化供配电技术、在线故障诊断技术等关键技术，简化了地面测试设备及操作，节约研制成本，提高了飞行器智能化和测试性水平。该系统已成功应用于某再入飞行器，通过了地面炮击试验和飞行试验考核，获取到了完整的全程飞行试验数据。

Abstract:

In order to meet the requirements of large storage capacity, low bit error rate and reliable recovery in harsh environment in the field of reentry vehicle telemetry, and the shortcomings of traditional power supply and distribution mode, such as many ground equipment components, complex operation and low reliability, a low bit error rate digital telemetry system design method for reentry vehicle is proposed.The system adopts key technologies such as large capacity redundant backup storage design, low bit error rate design based on ECC error correction coding algorithm, high impact recovery protection design, etc., which improves storage capacity to 32GB,can continuously store 9h data, reduces bit error rate to 10-10, and realizes reliable recovery under high impact conditions; digital power supply and distribution technology based on 1553B bus, online fault diagnosis technology and other key technologies are adopted to simplify the ground test equipment and operation, save the development cost and improve the intelligence and testability of the aircraft. The system has been successfully applied to a certain reentry vehicle. It has passed the ground artillery test and flight test, and obtained complete flight test data.