Fuzzy distribution method for reliability of radar system

A radar system and distribution method technology, applied in radio wave measurement systems, instruments, etc., can solve the problems of radar system with many uncertain factors and difficult reliability indicators, and achieve the effect that the reliability indicators are difficult to effectively allocate

Pending Publication Date: 2018-12-18
LEIHUA ELECTRONICS TECH RES INST AVIATION IND OF CHINA
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Problems solved by technology

[0009] The present invention proposes a reliability fuzzy allocation method formed by combining the interval analytic hierarchy process and the fuzzy allocation

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  • Fuzzy distribution method for reliability of radar system
  • Fuzzy distribution method for reliability of radar system
  • Fuzzy distribution method for reliability of radar system

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Embodiment Construction

[0050] In order to make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be described in more detail below in conjunction with the drawings in the embodiments of the present invention.

[0051] The radar system is a complex electronic system, which is assumed to be composed of n subsystems (the specific number shall prevail in the actual analysis), and all of them obey the exponential distribution. Thus, the reliability block diagram model of the radar system is established as figure 1 .

[0052] The mathematical model of radar system reliability is

[0053]

[0054] Where: R s (t) — basic reliability of the radar system;

[0055] R i (t)—basic reliability of radar subsystem, i=1,2,…,n;

[0056] MTBF i — mean time between failures of the radar subsystem, i=1,2,…,n.

[0057] known preimage (influencing factor weights) and mapping (the membership degree matr...

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Abstract

The invention relates to a fuzzy distribution method for the reliability of a radar system. The method comprises the steps of S1, defining a reliability index; S2, determining a sub-system set; S3, determining an influence factor set; S4, determining an influence factor weight; S5, determining an influence factor membership matrix; S6, fuzzily comprehensively judging the reliability; and S7, distributing the reliability of the radar system, wherein if the reliability index does not meet requirements, the reliability of the radar system is re-distributed, and if the reliability index meets requirements, reliability distribution is continuously performed on the sub-system. According to the method provided by the invention, a interval analytic hierarchy process and a fuzzy distribution methodare combined to form a reliability distribution method, interval numbers are used for describing uncertain information in the radar system, historical reliability data of similar products and valuable experience of experts are comprehensively considered, qualitative information and quantitative information are combined, and thus a distribution result is more accordant with or closer to the actualcondition, and the problem that the reliability index of the radar system is difficult to distribute effectively can be effectively solved.

Description

technical field [0001] The invention belongs to the technical field of radar system reliability design, in particular to a radar system reliability fuzzy distribution method. Background technique [0002] The radar system is a typical complex system. For complex systems, there are a lot of uncertainties, which makes it difficult to effectively allocate reliability indicators. The distribution of reliability indexes is an important part of the reliability design of radar systems, and whether the distribution of indexes is reasonable or not is of great significance to radar systems. At present, fuzzy allocation method, analytic hierarchy process and their combination methods are effective solutions to solve the reliability allocation of complex systems. However, these existing methods have the following deficiencies: [0003] 1) Some influencing factors are uncertain, such as environmental conditions, technical level, etc. It is difficult to express these influencing factors...

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Application Information

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IPC IPC(8): G01S7/40
CPCG01S7/40
Inventor 张昌卫欧爱辉何富凯
Owner LEIHUA ELECTRONICS TECH RES INST AVIATION IND OF CHINA
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