载人航天任务的视频压缩

IEEE Global Telecommunications Conference, 1989, and Exhibition. 'Communications Technology for the 1990s and Beyond Pub Date : 1989-11-27 DOI:10.1109/GLOCOM.1989.63976

R. Viola, L. Chiariglione, R. Russo

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引用次数: 1

摘要

提出了一种完整的轨道航天器视频压缩图像传输方案。设计驱动是最大的灵活性和最小的设备重量，功率和尺寸。视频多路复用系统被设计成在保持内部同步结构的同时保持对链路的异步访问。里德-所罗门码用于获得低开销的几乎无错误的系统。编码器和解码器能够异步工作。所选择的编码算法是基于DCT的，允许从64到2048 kbit/s的可变比特率，也可以传输全分辨率的固定图像。设计结果表明，只有开发特殊的超大规模集成电路芯片，才能满足飞行硬件质量和功耗的严格要求

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Viceo compression for manned space missions

A complete design solution for transmitting video compressed images from orbiting spacecraft is presented. The design drives were maximum flexibility and minimization of equipment weight, power, and dimensions. The video multiplexing system is designed to maintain asynchronous access to the link while preserving an internally synchronous structure. Reed-Solomon codes are used to obtain a practically error-free system with low overhead. Coder and decoder are able to work asynchronously. The selected coding algorithm is DCT based and allows a variable bit rate from 64 to 2048 kbit/s and also transmission of fixed images with full resolution. The presented design results show that only by developing ad hoc VLSI chips can the severe constraints for mass and power consumption of the flight hardware be met.<>

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来源期刊

IEEE Global Telecommunications Conference, 1989, and Exhibition. 'Communications Technology for the 1990s and Beyond

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