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Self-adaptive fault detection and diagnosis method and device for superheterodyne receiver

A superheterodyne receiver and fault detection technology, which is applied in receiver monitoring and other directions, can solve the problems of fault detection and diagnosis without superheterodyne receivers, and achieve the effect of filling the blank of fault detection and diagnosis

Inactive Publication Date: 2017-01-04
BEIHANG UNIV +1
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

However, there is almost no relevant research on fault detection and diagnosis of superheterodyne receivers

Method used

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  • Self-adaptive fault detection and diagnosis method and device for superheterodyne receiver
  • Self-adaptive fault detection and diagnosis method and device for superheterodyne receiver
  • Self-adaptive fault detection and diagnosis method and device for superheterodyne receiver

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Embodiment Construction

[0053] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described below are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0054] figure 1 It is a functional block diagram of an adaptive fault detection and diagnosis method for a superheterodyne receiver provided by an embodiment of the present invention, as shown in figure 1 As shown, the steps include:

[0055] Step S101: input an input signal to a superheterodyne receiver, and process the input signal by the superheterodyne receiver. Wherein, the input signal may be a sinusoidal signal.

[0056] Step S102: using the trained one-level GRNN to process the input signal and the output signal of the superheterodyne receiver at the previous moment to obtain an estimated output signal.

[0057]Step S103: According to the estim...

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Abstract

The invention discloses a self-adaptive fault detection and diagnosis method and device for a superheterodyne receiver. The method comprises the steps of inputting an input signal in the superheterodyne receiver and processing the input signal by the superheterodyne receiver; processing the input signal and an output signal of the superheterodyne receiver in previous time by a trained first-level GRNN observer, thereby obtaining an estimated output signal; obtaining a residual error according to the estimated output signal and the output signal of the superheterodyne receiver in current time; processing the input signal and the residual error by employing a trained second-level GRNN observer, thereby obtaining a self-adaptive threshold value; and determining whether a fault occurs in the superheterodyne receiver or not according to the residual error and the self-adaptive threshold value. According to the method and the device, whether the fault occurs in the superheterodyne receiver or not can be detected, and a fault type can be diagnosed.

Description

technical field [0001] The invention relates to the field of fault detection of a superheterodyne receiver, in particular to an adaptive fault detection and diagnosis method and device for a superheterodyne receiver. Background technique [0002] Superheterodyne receivers are widely used in electronic information systems as equipment for electronic equipment to receive information. From small radios to large radar receivers, superheterodyne receivers play a key role in the corresponding equipment. However, as an important part of national defense and military construction, the electronic information system will be in a complex electromagnetic environment due to the equipment itself. and obvious benefits. [0003] The superheterodyne receiver is a typical module in electronic information products. It is often used in long-distance communication. The superheterodyne receiver has the characteristics of high frequency resolution, high sensitivity, wide dynamic range, and large ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B17/26
CPCH04B17/26
Inventor 袁航周博宋登巍王满喜
Owner BEIHANG UNIV
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