A Weak Target Enhancement Method in the Bearing Time Recording

Abstract

A method which combines a new image detection operator with one dimensional subsection histogram equalization(NIDO-ODSHE) is proposed to deal with the problem that the target cannot be better detected on the time recording due to the influence of environmental noise, disturbance and so on. Firstly, slide detections of a target trajectory is carried out based on beam data using the new image detection operator. Then the detected data is processed by the adaptive subsection histogram equalization, and the new time recording is finally obtained. After such a treatment, the processed image gets better gain, the image clarity is obviously improved, and the weak target trajectory is significantly enhanced. Moreover, the NIDO-ODSHE method does not need parameter setting and the computational amount is small. Simulation and experimental results on a time recording of and comparisons with the histogram equalization show that the NIDO-ODSHE method can enhance the weak target on a time recording and improve the artificial/automatic detection ability of weak targets, the proposed method obviously improves the image, and increases the mean squared error ratio and the image clarity more than 12% and 6%, respectively.