Lead-Free Soldering Risks and Reliability Problems in Space Electronics

Cal, Baris

doi:10.1109/ismsit.2019.8932788

Cited by 2 publications

(2 citation statements)

References 3 publications

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“…In recent years, in the field of information and computing systems, there has been a need for a significant increase in the performance of computers and systems [1]. This trend is especially relevant in on-board spacecraft systems, since such systems are designed in conditions of restrictions on the weight and size characteristics and energy consumption [2]. The large role is played at the same time by improvement of technical means, in particular the memory devices (MD).…”

Section: Introductionmentioning

confidence: 99%

“…The requirement to generate multiple compressed data streams at the output of the compression device results in the need to sort the compressed data into streams. To generate several compressed data streams at the output of the compression device, it is necessary to use associative storage devices, in which information is written and read in accordance with some associative feature [1,2,15], i.e., not at addresses. This property of the associative memories determines the ability to perform information processing in parallel across all message sources, which leads to a decrease in the requirements for the fast operation of the on-board computer system that is almost inversely proportional to the number of processed signals.…”

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confidence: 99%

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Determination of Characteristics of Associative Storage Devices in Radio Telemetry Systems with Data Compression

Yesmagambetov,

Mussabekov,

Alymov

et al. 2023

Computation

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In the radio telemetry systems of spacecraft, various data compression methods are used for data processing. When using any compression methods, the data obtained as a result of compression is formed randomly, and transmission over radio communication channels should be carried out evenly over time. This leads to the need to use special buffer storage devices. In addition, existing spacecraft radio telemetry systems require grouping of compressed data streams by certain characteristics. This leads to the need to sort compressed data by streams. Therefore, it is advisable to use associative buffer storage devices in such systems. This article is devoted to the analysis of the processes of formation of output streams of compressed data generated at the output of an associative storage device (ASD). Since the output stream of compressed data is random, queue theory and probability theory are used for analysis. At the same time, associative memory is represented as a queue system. Writing and reading in an ASD can be interpreted as servicing orders in a queue system. The purpose of the analysis is to determine the characteristics of an associative storage device (ASD). Such characteristics are the queue length M{N} in the ASD, the deviation of the queue length D{N} in the ASD and the probability pn of a given volume n of compressed data in the ASD (including the probability of emptying and the probability of memory overflow). The results obtained are of great practical importance, since they can be used to select the amount of memory of an associative storage device (ASD) when designing compression devices for telemetry systems of spacecraft.

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Section: Introductionmentioning

confidence: 99%

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confidence: 99%