Abstract
The classification and recognition of radar clutter is helpful to improve the efficiency of radar signal processing and target detection. In order to realize the effective classification of uniform circular array (UCA) radar clutter data, a classification method of ground clutter data based on the chaotic genetic algorithm is proposed. In this paper, the characteristics of UCA radar ground clutter data are studied, and then the statistical characteristic factors of correlation, non-stationery and range-Doppler maps are extracted, which can be used to classify ground clutter data. Based on the clustering analysis, results of characteristic factors of radar clutter data under different wave-controlled modes in multiple scenarios, we can see: in radar clutter clustering of different scenes, the chaotic genetic algorithm can save 34.61% of clustering time and improve the classification accuracy by 42.82% compared with the standard genetic algorithm. In radar clutter clustering of different wave-controlled modes, the timeliness and accuracy of the chaotic genetic algorithm are improved by 42.69% and 20.79%, respectively, compared to standard genetic algorithm clustering. The clustering experiment results show that the chaotic genetic algorithm can effectively classify UCA radar’s ground clutter data.
Highlights
Uniform circular array (UVA) radar is a uniform circular array radar composed of isotropic antennas, which has the advantages of space omnidirectional scanning, various search and tracking methods, and flexible beam pointing [1,2,3]
Our research found that compared with sea clutter and meteorological clutter, obvious differences occurred from uniform circular array (UCA) radar ground clutter, such as power spectrum characteristics, non-stationarity and nonlinearity, amplitude distribution characteristics, and correlation, etc
This section mainly introduces the clustering results of UCA radar clutter measured data and uses the criterion function based on Euclidean distance to evaluate Genetic Algorithm (GA) clustering’s performance and chaotic GA clustering proposed in this paper
Summary
Uniform circular array (UVA) radar is a uniform circular array radar composed of isotropic antennas, which has the advantages of space omnidirectional scanning, various search and tracking methods, and flexible beam pointing [1,2,3]. It is especially suitable for the monitoring of low and slow targets under complex terrain background. UCA ground-based radar is affected by strong scattering clutter signals during search and tracking missions, which is a crucial factor restricting the performance of UCA radar. The spectral characteristics of clutter are studied based on measured
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