Abstract: After analyzing the broadband radar reflected signals, the main characteristics of them are summarized first. Then after comparing several typical signal detection methods, the Correlated Detection Based on Position Information (CDBPI) and Interleaved Periodic Correlated Detection (IPCD) methods are discussed, including their main performances, advantages and disadvantages. The results of theoretical analysis proved that CDBPI can be used to determine the position of several targets precisely and IPCD to enhance the input signal noise ratio (SNR). Further studies on IPCD method proved that it has very good detection performance when input SNR is small. Simulation results using modeled and measured data show that IPCD can enhance SNR by 1~ 2 dB than typical Energy Detection (ED) when 32 pulses are integrated.