Airplane radiofrequency device electromagnetic compatibility analysis method based on time availability

A technology for electromagnetic compatibility and radio frequency equipment, which is applied in the field of electromagnetic compatibility prediction analysis between radio frequency equipment, and can solve problems such as obstacles to the normal use of aircraft platforms

Active Publication Date: 2012-09-26
BEIHANG UNIV
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Problems solved by technology

In the past, the prediction and analysis of electromagnetic compatibility between radio frequency equipment was mainly carried out from the two aspects of the amplitude and frequency spectrum of the radiated and received signals of each equipment, but did n

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  • Airplane radiofrequency device electromagnetic compatibility analysis method based on time availability
  • Airplane radiofrequency device electromagnetic compatibility analysis method based on time availability
  • Airplane radiofrequency device electromagnetic compatibility analysis method based on time availability

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[0088] Example

[0089] See figure 2 It is shown that in the design stage of the aircraft, there are four RF devices that may interfere with each other after amplitude screening and frequency screening. Further time availability analysis is needed to evaluate whether these devices can be used in a flight mission. Compatible work. The invention adopts a time availability-based electromagnetic compatibility analysis method among aircraft radio frequency equipment, and performs electromagnetic compatibility analysis of the whole radio frequency equipment through three steps.

[0090] Such as figure 2 As shown, the radio frequency equipment that may interfere with each other obtained after amplitude screening and frequency screening is denoted as S 1 , S 2 , S 3 , S 4 , The processor P is a computer used in the aircraft to control the working time slots of the radio frequency equipment with mutual interference.

[0091] Step 1: Set time availability related parameters

[0092] The time...

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Abstract

The invention discloses an airplane radiofrequency device electromagnetic compatibility analysis method based on time availability. In the airplane radiofrequency device electromagnetic compatibility analysis method, a time availability value is compared to an electromagnetic compatibility required value so as to judge whether design of airplanes meets requirement of electromagnetic compatible operation of various devices or not. The airplane radiofrequency device electromagnetic compatibility analysis method includes calculating time availability of different interference radiofrequency devices by a work time slot distribution method based on a binary-tree anti-collision algorithm, and evaluating whether the different interference radiofrequency devices meet normal service requirements or not during a complete simulated flying analysis process according to the time availability.

Description

technical field [0001] The invention relates to the field of electromagnetic compatibility design, and more particularly refers to a method applicable to the aircraft design process, which uses time availability to predict and analyze the electromagnetic compatibility between radio frequency equipment in the aircraft platform. Background technique [0002] The national military standard GJB 72A-2002 "Electromagnetic Interference and Electromagnetic Compatibility Terminology" defines electromagnetic compatibility as: "The coexistence state where equipment, subsystems, and systems can perform their respective functions together in a common electromagnetic environment." The aircraft platform contains communication, navigation, identification and mission systems, and a large number of radio frequency equipment is assembled in its small space. Each radio frequency device works by radiating and receiving electromagnetic waves, resulting in a complex electromagnetic environment in ...

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Application Information

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IPC IPC(8): G01R31/00B64F5/00
Inventor 苏东林傅成彬王宝泉刘焱胡蓉卫颖
Owner BEIHANG UNIV
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