Ground cascade system external radio frequency electromagnetic environment test method

Abstract

The invention discloses a ground cascade system external radio frequency electromagnetic environment test method which includes the steps that one subsystem of a ground cascade system is placed at the testing position of an opening field, other subsystems are arranged, a transmission cable electromagnetic coupling calculation model of the subsystem is constructed, coupling interference current between the subsystem and the other subsystems which are connected with the subsystem is obtained according to the mission cable electromagnetic coupling calculation model, a coupling interference current value curve is built, the coupling interference current is injected to a transmission cable due to the fact that a probe is injected, meanwhile an electromagnetic environment is produced by using a field intensity meter, a power amplifier, a directional coupler, a signal source, a power meter and a radiating antenna, antenna radiation is carried out on the position on the subsystem which is prone to producing an electromagnetic interference coupling by using an the electromagnetic environment, the subsystem is judged whether an electromagnetic sensitive phenomenon happens or not, provided the electromagnetic sensitive phenomenon happens, testing of the ground cascade system is proved to be unqualified, otherwise the testing is proved to be qualified. According to the ground cascade system external radio frequency electromagnetic environment test method, the whole ground cascade system can be tested in the radio frequency electromagnetic environment.

Description

technical field [0001] The invention belongs to the technical field of system-level electromagnetic compatibility tests, and more specifically relates to a test method for an external radio frequency electromagnetic environment of a ground cascade system. Background technique [0002] With the rapid development of information technology, the degree of system intelligence and informatization is getting higher and higher, and the mutual cascade coordination of systems has become a development trend. At the same time, the electromagnetic environment in which the system works has become increasingly complex. In order to ensure that the functions of the ground system can be effectively performed in complex electromagnetic environments, the radio frequency electromagnetic environment assessment changes stipulated in the national military standard GJB1389A-2005 "System Electromagnetic Compatibility Requirements" have been carried out. is particularly important. The standard clearl...

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Problems solved by technology

[0005] For the defects of the prior art, the purpose of the present invention is to provide a test method for the external radio frequency electromagnetic environment of the ground cascade system, aiming at solving the problem that the ground cascade system as a whole cannot be in the national military standard GJB1389A-2005 " Difficulties in the assessment of the external radio frequency electromagnetic environment specified in the System Electromagnetic Compatibility Requirements

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