Method and system for estimating sea clutter amplitude distribution parameter

Abstract

The embodiment of the present invention provides a method and system for estimating a sea clutter amplitude distribution parameter. The method comprises the steps of: obtaining the actually measured data of sea clutter amplitude distribution; performing an amplitude statistic process on the actually measured data to obtain actually measured probability data; and inputting the actually measured probability data into a statistical distribution model to obtain an actually measured statistical model parameter of the statistical distribution model output, wherein the statistical distribution model is obtained by training the simulation training data based on the sea clutter amplitude distribution and a simulation statistical model parameter corresponding to the simulation training data. The embodiment of the invention provides a deep learning method to estimate the sea clutter parameter, which obtains the actually measured probability data by processing the actually measured data, trains a neural network model based on the simulation data, and then inputs the actually measured probability data into the trained statistical distribution model to obtain the actually measured statistical model parameter. The model training can be performed offline by using the simulation data. The trained model has good real-time performance and high parameter estimation accuracy when processing the actually measured data.

Description

technical field [0001] The invention relates to the technical field of signal processing, in particular to a method and system for estimating sea clutter amplitude distribution parameters. Background technique [0002] For the radar on the sea surface, the backscatter echo of the sea surface to the radar inevitably contains the scattered signals of other objects, that is, sea clutter. As an important means of target detection, radar is mainly realized by transmitting specific signals into space, receiving and processing target echo signals. During the transmission process, various interferences will inevitably occur, which will reduce the detection performance of the radar. Sea clutter is closely related to factors such as radar operating frequency, polarization mode, ambient temperature, and wind direction. Strong sea clutter signals seriously interfere with useful signals. Therefore, sea clutter largely affects radar detection. Maritime target detection capabilities. ...

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present invention provides a method and system for estimating sea clutter amplitude distribution parameters, which are used to solve the problem in the prior art that the accuracy of parameter estimation decreases due to the non-real-time and limitations of the method for estimating mathematical statistics parameters

Images