A Method for Measuring Distortion of Radar Pulse Signal

Abstract

The invention discloses a radar pulse signal distortion measurement method, relates to the technical field of radar signal reconnaissance, can quantitatively evaluate and evaluate signal distortion degree, obtain specific pulse distortion parameter values, and can greatly improve algorithm development efficiency. The method includes the following steps: carrying out short-time Fourier transform on the signal to be tested, and extracting a graph of the maximum power of the signal changing with time from the result of the short-time Fourier transform. Calculate the normalized cross-correlation parameter, the normalized change trend parameter and the normalized pulse splitting parameter of the signal to be tested based on the graph of the maximum signal power versus time. The pulse distortion parameter is obtained by weighting and summing the normalized cross-correlation parameter, the normalized change trend parameter, the normalized pulse splitting parameter and the noise-to-signal ratio of the signal to be measured.

Description

technical field [0001] The invention relates to the technical field of radar signal reconnaissance, in particular to a radar pulse signal distortion measurement method. Background technique [0002] In actual radar signal parameter measurement, due to the complex electromagnetic environment, the signal to be processed often has various distortions. In this case, the signal-to-noise ratio can no longer evaluate the quality of the signal and the performance of the signal parameter measurement algorithm. In the case of a relatively high signal-to-noise ratio, the detection results are not as good as those with a poor signal-to-noise ratio. The main reason is that there is no Consider the effects of distortion. At present, there is no mature research and unified standard on the influence of signal distortion on the radar signal parameter measurement algorithm, which makes the algorithm lack of adaptability to the actual signal, and needs to be improved a lot when it is applied ...

AI Technical Summary

Problems solved by technology

In this case, the signal-to-noise ratio can no longer evaluate the quality of the signal and the performance of the signal parameter measurement algorithm. In the case of a relatively high signal-to-noise ratio, the detection results are not as good as those with a poor signal-to-noise ratio. The main reason is that there is no Consider the effect of distortion

At present, there is no mature research and unified standards on the influence of signal distortion on radar signal parameter measurement algorithms, which makes the algorithm lack of adaptability to actual signals, and requires a lot of improvement when it is applied to actual projects, which greatly affects the algorithm development. efficiency

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