Two — Thresholds CFAR detection of the range-spread target based on scattering centers accumulation

This paper concerns the detection algorithms based on the HRR component of detecting range spread target in white Gaussian noise and designs a detector. By setting a higher false alarm probability, we can obtain the first threshold and the information of the target scattering centers. Then we accumulate the energy of the cell with a scattering center and make use of the energy accumulation as the test statistic. The proposed detector shows a better performance compared with that of the integration detector and two-threshold GLRT detector for all the matched filter input SNR for a small value of the Nc and almost equals that of the Integration detector for a large value of the Nc. Both of the proposed detector and the Integration detector lose a little dB of the SNR comparing the BS_CLRT detector whiling the SNR below -30dB for a small Nc. The proposed detector could be applicable to the target with few scattering centers and propitious to the practical radar systems because of the general targets only with several scattering centers.