RPREC: A Radar Plot Recognition Algorithm Based on Adaptive Evidence Classification

Abstract

When radar receives target echoes to form plots, it is inevitably affected by clutter, which brings a lot of imprecise and uncertain information to target recognition. Traditional radar plot recognition algorithms often have poor performance in dealing with imprecise and uncertain information. To solve this problem, a radar plot recognition algorithm based on adaptive evidence classification (RPREC) is proposed in this paper. The RPREC can be considered as the evidence classification version under the belief functions. First, the recognition framework based on the belief functions for target, clutter, and uncertainty is created, and a deep neural network model classifier that can give the class of radar plots is also designed. Secondly, according to the classification results of each iteration round, the decision pieces of evidence are constructed and fused. Before being fused, evidence will be corrected based on the distribution of radar plots. Finally, based on the global fusion results, the class labels of all radar plots are updated, and the classifier is retrained and updated so as to iterate until all the class labels of radar plots are no longer changed. The performance of the RPREC is verified and analyzed based on the real radar plot datasets by comparison with other related methods.

RPC-EAU: Radar Plot Classification Algorithm Based on Evidence Adaptive Updating

“…Meanwhile, we compared various typical radar plot recognition algorithms, which are not only based on traditional machine learning but also on deep learning. These typical radar plot recognition algorithms mainly include PSO-SVM [5], IKNN [4], RPC-FNN [9], RPC-RNN [13] and RPREC [43]. In this experiment, the parameter settings of these algorithms still follow the settings from their respective references.…”

“…Considering that identifying targets and clutter in radar plots is essentially a data classification problem, combining belief functions with deep learning networks to improve classification accuracy is a meaningful topic. Therefore, we proposed the radar plot recognition algorithm based on adaptive evidence classification (RPREC) [43,44], which effectively improves the classification accuracy of radar plots. The limitation of RPREC is that the classifier needs to be retrained during each iteration process.…”