Micro-motion target motion parameter detection method based on radar antenna array elements

Abstract

The invention relates to the technical field of signal processing, in particular to a micro-motion target motion parameter detection method based on radar antenna array elements, and the method comprises the steps: obtaining beat signals of all antenna array elements of a target radar; filtering static clutter signals in the beat signals to obtain corresponding filtering beat signals; establishing a corresponding autoregression model according to the filtering beat signals; and finally, calculating a time domain continuation signal after the time domain continuation of the corresponding filtering beat signal according to the autoregression model; accumulating the time domain continuation signals corresponding to the antenna array elements, and calculating the distance information corresponding to the micro-motion targets through a peak value detection method; and calculating angle information corresponding to each micro-motion target according to the distance information of each micro-motion target in combination with a MUSIC algorithm. According to the micro-motion target motion parameter detection method, the distance and angle resolution of the micro-motion target can be effectively improved under the condition that the number of antenna array elements is limited, so that the detection precision and the detection cost of the micro-motion target motion parameter can be considered.

Description

technical field [0001] The invention relates to the technical field of signal processing, in particular to a method for detecting motion parameters of a micro-moving target based on radar antenna array elements. Background technique [0002] With the continuous development of radar detection technology and the improvement of modern signal processing level, radar sensors are more and more widely used in our life, playing an important role in automatic driving, human-computer interaction, smart appliances, etc. The requirements for detection accuracy are also getting higher and higher. Among them, the detection and tracking of motion parameters (state) of micro-moving targets in space is one of the difficult problems faced by modern radars. The motion parameters of the micro-moving target can be determined by the position information at different moments in space, and its position information is mainly determined by the distance information and angle information of the micro-...

AI Technical Summary

Problems solved by technology

[0005] 2) The moving speed is slow, which requires the radar to have a high speed resolution; 3) The state at continuous time is not easy to distinguish, which is not conducive to the estimation of the motion parameters of the micro-moving target

However, for antenna elements, adding antennas will correspondingly increase the hardware cost and increase the volume of the device, resulting in an increase in the detection cost of micro-moving targets

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