Reliability Modeling and Prediction Method of Spaceborne Phased Array Radar Antenna Array

Abstract

The invention provides a method for modeling and predicting the reliability of a spaceborne phased array radar antenna array, which includes: considering the interaction between components on the active antenna array composed of multi-stage solid-state power amplification chains, a " Tree connection" reliability model, which can accurately describe the hierarchical relationship and control relationship between components through the parent-child nodes in the tree structure; based on the "tree connection" model, a certain proportion of transceiver components in the phased array radar antenna array system Taking the failure as the criterion, the reliability modeling and prediction of a spaceborne phased array radar antenna array are carried out. The "tree connection" model in the present invention has rationality and the accuracy and high efficiency of the prediction method. The invention solves the problem that the reliability modeling of the traditional space-borne phased array radar antenna array ignores the correlation between components, resulting in a large error in the expected result, and the calculation of the reliability of such a large and complex system using an analytical method is too large. The problem of poor engineering realization.

Description

technical field [0001] The invention relates to the technical field of spacecraft, in particular to a reliability modeling and prediction method of a spaceborne phased array radar antenna array. Background technique [0002] An important advantage of spaceborne phased array radar is its high mission reliability. This is due to the fact that a large number of radio frequency transceiver components are installed in the complex antenna array, even if a small number of these components fail or do not work properly, the system performance will be affected. has little effect. The traditional active antenna array reliability model is a voting model in which k is selected from n, which is effective for a system that only considers the failure of the final RF transceiver component, but the actual active antenna array system is usually composed of the excitation level, intermediate stage, transceiver stage and other multi-stage solid-state power amplification chains, and the correlat...

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Problems solved by technology

[0012] The technical problem to be solved by the present invention is: in view of the complex level of the spaceborne phased array radar antenna array system, the strong correlation between system components, and the lack of effective reliability modeling methods at present, resulting in inaccurate reliability predictions, Introducing the tree structure in the computer data structure to the field of reliability engineering forms a new reliability modeling method, and on this basis, proposes a reliability prediction method based on Monte Carlo for this model

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