Method for testing uncertainty of radio frequency stealth signal

Abstract

The invention discloses a method for testing the uncertainty of a radio frequency stealth signal. The method comprises the following steps: firstly determining a to-be-tested signal sequence and a total number of sampling points, and randomly sorting the same; when the total number of sampling points is not less than the minimum total number of sampling points required by the test method, adding apreset proportion of Gaussian white noise to an original sampling signal, and calculating the number of turning points in the sampling points; performing Z detection with a confidence degree of 95% on the number of turning points; when the Z detection contrast result difference is obvious, continuing to add the preset proportion of Gaussian white noise to the original sampling signal, calculatingthe number of turning points in the sampling points again, and performing the Z detection with the confidence degree of 95% on the number of turning points until the Z detection contrast results haveno obvious difference; and repeating the process for multiple times, and using an average proportional relation between the original signal power of every Z detection and the Gaussian white noise power spectral density as a characterization index for testing the uncertainty of the radio frequency stealth signal. The method disclosed by the invention can be used for evaluating the relative uncertainty between various radio frequency stealth signals.

Description

technical field [0001] The invention relates to radio frequency stealth technology, in particular to a method for testing the uncertainty of radio frequency stealth signals. Background technique [0002] With the increasingly fierce electronic countermeasures in the modern battlefield, the detection ability of the enemy's passive detection system for radio frequency radiation signals is getting stronger and stronger, which poses a serious threat to the survival of radio frequency radiation signal equipment. The design of radio frequency stealth signal can significantly reduce the probability of the signal being detected by the enemy's passive detection system, which is an important guarantee for improving the battlefield survivability and combat effectiveness of radio frequency radiation equipment and its carrier platform. Compared with the traditional signal design technology, the radio frequency stealth signal design should reduce the interception detected by the enemy's p...

AI Technical Summary

Problems solved by technology

[0005] Uncertainty testing of radio frequency stealth signals is a new field of research. Many literatures mainly focus on the time-width-bandwidth product method of radio frequency stealth signals and the peak-to-average ratio of common time-spectrum, and directly establish the uncertainty of radio frequency stealth signals with Gaussian white noise Relatively few studies have compared

The time-width-bandwidth product method and the peak-to-average ratio of the common time-spectrum are difficult to take into account various upgraded or new algorithms of passive detection systems. The uncertainty test of radio frequency stealth signals is subjective, and the objectivity is not obvious, so it cannot Truly and objectively reflect the uncertainty of radio frequency stealth signals

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