Abstract: "Blind speed" phenomenon due to Doppler frequency usually exists in moving target indication radar. This disadvantage affect is avoided through staggered pulse repetition frequency method. In wideband radar, a noncoherent moving target indication method is adopted, which is used to detect the moving target through instantaneous displacement of radar echo signals. It not only can completely avoid the affect of "blind speed" and simplifies system design, but also can effectively detect the targets of different speed including low speed. In this paper, these two clutter suppression methods are researched, and the corresponding results of analysis are finally presented.