Detecting Target Located in Nonstationary Background Based on Two-Dimensions Constant False Alarm Rate

According to the time-varying properties of the disturbances which exist in high frequency ground wave radar,we propose a new algorithm of two-dimensions constant false arm rate based on Doppler and range spectrum.The nostationary background is whited with time-varying filter.The three results are compared such as time-varying whitening and two dimension processing,fixed whitening and two dimensions processing,no whitening and one dimension processing.The new algorithm is valued correctly with the comparing results.