Abstract

The most measured data in the rocket-and-space technics is a broadband non-stationary random process. Using traditional methods of cyclic digitalization at processing of such data leads to heavy computational costs and heavy amounts of memory of on-board computing devices. As a rule, in processing of discontinuous processes, the recovery of original implementation on the receiving side is not required and processing involves calculation of probabilistic characteristics. In this case processing of data in the rocket-and-space technics has a number of features. First, random processes always represented by the sole implementation. Secondly, priori knowledge of measured random process probabilistic properties is not possible. Thirdly, there is need in on-line processing that predetermines use of rapid processing methods. The article considers application possibilities of nonparametric solution theory methods for evaluation of probabilistic properties of non-stationary broadband random processes in the rocket-and-space technics on-board systems.

Highlights

  • 1.1 Introduce the ProblemAt the rocket and space technology always has been a pressing problem transferring to Earth in real-time telemetry data rate (Mamchev, 2007)

  • The random component of physical process is filtrated. Such mode of measurement and handling of parameters is applied for the purpose of abbreviation of computing costs and decrease of demands to radio engineering communication channels as frequency of an initial cyclical digitization Δt depends on a signal spectrum ΔF (Novikov, 2003)

  • The essence of methods consists in check of a statistical hypothesis of stationarity based on selective data of the measured process with use nonparametric statistics

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Summary

Introduction

At the rocket and space technology always has been a pressing problem transferring to Earth in real-time telemetry data rate (Mamchev, 2007) This problem buys a special urgency by transmission to the land of parameters of propulsion systems, such as temperature and combustion chamber pressure, a fuel rate. The random component of physical process is filtrated Such mode of measurement and handling of parameters is applied for the purpose of abbreviation of computing costs and decrease of demands to radio engineering communication channels as frequency of an initial cyclical digitization Δt depends on a signal spectrum ΔF (Novikov, 2003).

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