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首页> 外文期刊>Aerospace and Electronic Systems, IEEE Transactions on >Demonstration of a Quantile System for Compression of Data from Deep Space Probes
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Demonstration of a Quantile System for Compression of Data from Deep Space Probes

机译：演示用于深空探测器数据压缩的分位数系统

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This paper describes the theory and design of an advanced engineering prototype of a quantile system of data compression for space telemetry. The basic idea is to transmit a few quantiles (or percentage points, as they are sometimes called) of a histogram of experimental values formed aboard a spacecraft. Only these quantiles are transmitted to Earth, and yet a large part of the information that was contained in the original histogram can be reconstructed on Earth. Compression ratios on the order of 100 to 1 are obtainable at 100 percent efficiency (in the sense of variances of estimates) with a simple device that performs no on-board arithmetic operations. After summarizing the theoretical background governing the use of quantiles, we then consider what the design considerations of such a system should be. Data compression ratios are computed for a typical application of the quantile system. The detail description of the advanced engineering quantile system that has been built at the Jet Propulsion Laboratory is discussed; in addition, a block diagram is given and analyzed. An important feature of the quantile system is its self-adaptive feature. Examples are given whereby quantile systems for compressing telemetry data can find application in non-military and non-space technology. Finally, experimental results using the constructed system are given.
机译：本文介绍了空间遥测数据压缩分位数系统的高级工程原型的理论和设计。基本思想是传递航天器上形成的实验值直方图的几分位数（或百分数，有时也称为百分数）。只有这些分位数会传输到地球，而原始直方图中包含的大部分信息仍可以在地球上重建。使用不执行任何机载算术运算的简单设备，可以100％的效率（在估计的方差意义上）获得100：1的压缩率。在总结了使用分位数的理论背景之后，我们将考虑这种系统的设计考虑。针对分位数系统的典型应用计算数据压缩率。讨论了在喷气推进实验室建立的先进工程分位数系统的详细描述；另外，给出并分析了框图。分位数系统的重要特征是其自适应特征。给出了示例，用于压缩遥测数据的分位数系统可以在非军事和非空间技术中找到应用。最后，给出了使用所构建系统的实验结果。

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