A high - speed sampling system for echo signal of impulse gpr based on equivalent time sampling method is presented , and significant circuits including step sampling pulse generator and sampling gate circuit are designed 摘要提出了一種基于等效時(shí)間采樣方法的沖擊型探地雷達(dá)回波信號(hào)高速采樣系統(tǒng),設(shè)計(jì)實(shí)現(xiàn)了等效時(shí)間采樣的關(guān)鍵電路,包括步進(jìn)采樣脈沖發(fā)生器、采樣門(mén)電路。