Object plot clotting method of radar echo data

Abstract

The invention belongs to the technical field of radar signal processing, and discloses an object plot clotting method of radar echo data. The method includes the following steps: acquiring original echo data of a plurality of scanning periods of a radar; successively conducting multi-pulse incoherent integration on the original echo data, obtaining echo data after pulse integration; conducting constant false alarm rate detection on the echo data which is subject to pulse integration, successively conducting binary quantization on the echo data which is subject to constant false alarm rate detection and conducting binary sliding window detection along the direction of a direction-fractal dimension; the echo data which is subject to binary sliding window serving as binary image data, firstly inflating the binary image data and then corroding the binary image data so as to obtain all connected domain of the binary image data; filtering a fist connected domain and a second connected domain, obtaining residual connected domain containing object plots; on the basis of the residual connected domain which contains the object plots, obtaining object information, realizing clotting of the object plots. The method can increase object parameter estimation precision and object resolution capability.

Description

technical field [0001] The invention belongs to the technical field of radar signal processing, and in particular relates to a method for agglomerating target points and traces of radar echo data, which is used for preprocessing radar echo data and extracting target parameters. Background technique [0002] With the development of radar technology, people require radar to have more functions and functions. Radar in the traditional sense is mainly used to measure basic information such as distance, azimuth, and elevation of targets. Modern radars require detection, trace acquisition, and target tracking in more complex environments (interference and clutter). [0003] Modern radar technology is developing in the direction of intelligence, miniaturization, informatization and precision. It is required that radar can acquire more accurate target information and achieve more stable target tracking. Track aggregation technology is the process of realizing target parameter estim...

AI Technical Summary

Problems solved by technology

[0004] The main problems of spot condensing at this stage are how to accurately distinguish target spots in complex environments, and how to improve the method of spot condensing processing under different radar systems

The trace agglomeration method based on the sliding window method is a commonly used method of trace agglomeration. The main problem is that when the target end threshold is large, the target trace will be split, and the split of the target in azimuth is often reduced by reducing Threshold value method is used to solve the problem, and the threshold value cannot be selected too low, too low threshold value will cause too many false dots, which will affect the quality of dots

The classic method based on image processing is to use the method of image contour search to find the centroid to realize the aggregation of dot traces, which cannot improve the splitting of dot traces in distance and azimuth.

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