Method for testing and evaluating LPI performance of data link

Abstract

The invention discloses a method for testing and evaluating LPI performance of a data link. By adopting the method disclosed by the invention, the strength of radio signals that are transmitted externally can be reduced, the radiation characteristics can be optimized, and the anti-interception capability of test equipment can be improved. The method is implemented through the following technical schemes: in a microwave anechoic chamber environment, a data link antenna 1 and a data link antenna 2 complete a data link communication function, and a microwave antenna completes the detection of a communication signal of the data link antenna 1, and simultaneously eliminates an interference signal of the data link antenna 2; a scenario driving system of an industrial control computer sets a value that meets a power control range and stepping requirements of the data link, and automatically simulates discrete track points and continuous track segments; and an analysis and evaluation system ofthe industrial control computer equivalently converts a communication distance and an interception distance obtained under existing site sizes and test conditions to a real aerial test flight scene,obtains a power control range and a stepping value of the data link, and calculates a communication LPI quality factor of the data link.

Description

technical field [0001] The invention relates to a method for testing the power control range, step and communication low probability of intercept (LPI) quality factor of a data link in a microwave anechoic chamber environment, which is used for evaluating the LPI performance of the data link. Background technique [0002] With the continuous development of informatization and the continuous expansion of the use of space electromagnetic equipment, major changes have taken place in the complex electromagnetic environment. The complex and changeable electromagnetic environment not only affects the safety and device performance of electronic equipment, but also directly affects the performance of electronic equipment, seriously Affects the degradation of communication quality. The electromagnetic compatibility test is a means to verify the rationality of the electromagnetic compatibility design of electronic equipment and finally evaluate the quality of electronic equipment. Sin...

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Problems solved by technology

[0008] The purpose of the present invention is to aim at the problems existing in the prior art, propose a kind of quantitative test precision high, automation level is high, work is reliable, can carry out quantitative assessment to data link LPI level, test and evaluate the method for data link LPI quality factor performance, to solve Evaluation Problems of Data Link LPI Performance

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