A method and system for nonlinear teleparameter transformation based on discrete integral

A conversion method and conversion system technology, applied in the field of satellite health status monitoring, can solve the problems of difficult quantitative description of nonlinear relationship, loss of health information, etc.

Active Publication Date: 2022-03-18
SHANGHAI SATELLITE ENG INST
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Problems solved by technology

However, because the binary remote parameters with nonlinear integral relationship do not have the obvious advantages mentioned above, and the nonlinear relationship with periodic law is difficult to describe accurately and quantitatively, the remote parameters with nonlinear integral relationship are often used in actual health monitoring work. Ignore, thus losing the health information behind it

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  • A method and system for nonlinear teleparameter transformation based on discrete integral
  • A method and system for nonlinear teleparameter transformation based on discrete integral
  • A method and system for nonlinear teleparameter transformation based on discrete integral

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Embodiment

[0044] Such as figure 1 Aiming at the problems of poor intuition and difficult quantitative description of nonlinear integral relationship binary remote parameters, a discrete integral nonlinear remote parameter data conversion method is proposed, which converts nonlinear integral relationship into linear relationship to support qualitative analysis, Quantitative analysis and data mining work carried out.

[0045] Telemetry parameter selection steps: Combining the analysis of the internal working mechanism of the satellite and the actual data analysis, select the binary original remote parameters with potential nonlinear integral relationship from the satellite remote parameters, and form them into a binary remote parameter set within K cycles:

[0046]

[0047]

[0048] Time calibration processing steps: Since there may be inconsistent sampling frequencies among different remote parameters, a time calibration algorithm based on fuzzy matching is used to align and match ...

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Abstract

The present invention provides a nonlinear remote parameter conversion method and system based on discrete integration, including: Step 1: According to the analysis of the internal working mechanism of the satellite and the analysis of actual data, a binary primitive with a nonlinear integral relationship is selected from the satellite remote parameter Remote reference, aligning and matching the binary original remote reference on the time axis to obtain a binary remote reference sequence that strictly matches the time points; Step 2: Perform time difference processing on the binary remote reference sequence to obtain the time interval of the original remote reference Sequence; Step 3: According to the nonlinear transformation formula, perform discrete integral transformation on the original remote parameter time interval sequence to generate a remote parameter integral sequence; Step 4: Linearize the remote parameter integral sequence to generate a new remote parameter with a linear mathematical relationship Combination of reference sequences. The invention utilizes a mathematical transformation method to linearize the non-linear telemetry parameter sequence which is not easy to model the relation, and realizes the conversion from the non-linear remote reference relation to the linear relation.

Description

technical field [0001] The invention relates to the technical field of satellite health status monitoring, in particular to a nonlinear remote parameter conversion method and system based on discrete integrals. Background technique [0002] The structure of the navigation satellite system is complex, and there are rich correlations between the monitoring parameters, and the correlations describe the real-time operation status of the satellite. The traditional single-parameter satellite status monitoring method mainly uses a fixed threshold to alert the telemetry parameters whose amplitude or rate of change exceeds the limit. However, during the initial decline and minor failure period of the satellite system, the change of the single remote parameter data itself is relatively weak, showing that its remote parameter amplitude is still stable within the monitoring threshold range, so the single remote parameter status monitoring based on a fixed threshold cannot effectively re...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): G06F30/20G06F119/02G06F119/04
CPCG06F30/20G06F2119/02G06F2119/04
Inventor董房党建成刘赞张发家周军庄建昆张国勇杨同智
OwnerSHANGHAI SATELLITE ENG INST